USB2-H-6004-M_技术文档

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EasySYNC Ltd

USB2-H-600X-M FAMILY Hi-Speed USB to

Multi-Ports RS422 Adapter

Data Sheet

Document Reference No.: ES_000058

Version 1.0

Issue Date: 2012-01-19

Part Number

USB2-H-6016-M USB2-H-6008-M USB2-H-6004-M USB2-H-6002-M USB2-H-6001-M

The USB2-H-600X-M provides a simple method of adapting legacy serial devices with RS422

interfaces to modern USB ports by incorporating the FTDI’s Hi-Speed USB bridge chips.

The adaptor which is contained within a metal enclosure is either USB powered or externally powered

(depends on the number of ports) and can supply an output of +5VDC @ up to 80mA on the 5mm

terminal block connectors or 30mA on the Pin 9 of DB9 connectors. Indicator LEDs provide functional

status.

The USB2-H-600X-M family have been tested to be compliant with both FCC Part 15 Subpart B and

European EMC Directive.

EasySYNC Ltd

Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow, G41 1HH, United Kingdom

Tel.: +44 (0) 141 418 0181 Fax: + 44 (0) 141 418 0110

E-Mail (Support): support@easysync-ltd.com Web: http://www.easysync-ltd.com/product-downloads

Neither the whole nor any part of the information contained in, or the product described in this manual, may be adapted or reproduced

in any material or electronic form without the prior written consent of the copyright holder. This product and its documentation are

supplied on an as-is basis and no warranty as to their suitability for any particular purpose is either made or implied. EasySYNC Ltd will

not accept any claim for damages howsoever arising as a result of use or failure of this product. Your statutory rights are not affected.

This product or any variant of it is not intended for use in any medical appliance, device or system in which the failure of the product

might reasonably be expected to result in personal injury. This document provides preliminary information that may be subject to

change without notice. No freedom to use patents or other intellectual property rights is implied by the publication of this document.

EasySYNC Ltd, Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow, G41 1HH, United Kingdom. Scotland Registered Number:

SC224924

Document Reference No.: ES_000058

USB2-H-600X-M FAMILY Hi-Speed USB to Multi-Ports RS422 Adapter Data Sheet

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1 Introduction................................................................................... 4

1.1

1.2

1.3

Functional Description .................................................................................. 4

LED Description............................................................................................. 7

Block Diagram............................................................................................... 7

1.3.1

1.3.2

Singal Port Block Diagram .......................................................................... 7

Dual Port Block Diagram............................................................................. 8

Four, Eight and Sixteen Ports Block Diagram................................................. 8

Block description....................................................................................... 9

1.3.3

1.3.4

1.4

1.5

Features...................................................................................................... 10

Performance Figures................................................................................... 12

2 Installation................................................................................... 13

2.1

Hardware Configurations ............................................................................ 13

2.1.1

Wiring.....................................................................................................13

2.2

Device Driver Installation ........................................................................... 14

2.2.1

2.2.2

Microsoft Windows....................................................................................15

Mac OS X, Linux, Windows CE....................................................................18

3 Connections.................................................................................. 19

3.1

3.1.1

3.1.2

3.1.3

External Connectors.................................................................................... 19

USB........................................................................................................19

RS422.....................................................................................................19

5mm Terminal Block.................................................................................20

4 Termination and BIAS Resistors Setting....................................... 22

5 Electrical details........................................................................... 25

5.1

5.2

5.3

5.4

5.5

5.6

USB............................................................................................................. 25

104 ............................................................................................................. 25

105 ............................................................................................................. 25

5V Power Adapter ....................................................................................... 25

RS422 ......................................................................................................... 25

RS422 ......................................................................................................... 26

6 Physical Environment Details ....................................................... 27

6.1

6.2

Storage ....................................................................................................... 27

Operating.................................................................................................... 27

7 Physical Dimensions..................................................................... 28

7.1

7.2

7.3

USB2-H-6001-M Dimension......................................................................... 28

USB2-H-6002-M Dimension......................................................................... 30

USB2-H-6004-M Dimension......................................................................... 31

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7.4

7.5

USB2-H-6008-M Dimension......................................................................... 32

USB2-H-6016-M Dimension......................................................................... 33

8 Environmental Approvals & Declarations...................................... 34

8.1

8.2

8.3

8.4

8.5

EMI Compatibility........................................................................................ 34

Safety ......................................................................................................... 34

Environmental............................................................................................. 34

Reliability.................................................................................................... 34

Import / Export Information....................................................................... 35

9 Troubleshooting ........................................................................... 36

9.1

9.2

9.3

Hardware .................................................................................................... 36

Device Driver .............................................................................................. 36

Technical Support ....................................................................................... 37

10 Contact Information..................................................................... 38

Appendix A – List of Figures and Tables............................................. 39

Appendix B – Revision History ........................................................... 41

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USB2-H-600X-M FAMILY Hi-Speed USB to Multi-Ports RS422 Adapter Data Sheet

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1 Introduction

1.1 Functional Description

The USB2-H-600X-M family are a USB to RS422 level serial UART adaptor incorporating FTDI’s FT4232H,

FT2232H and FT232H Hi-Speed USB2.0 (480Mb/s) to serial UART interface IC device. The FTDI Chips

handle all the USB signaling and protocols. The adaptor provides a fast, simple way to connect devices

with an RS422 interface to USB.

The integrated electronics of the USB2-H-100X-M utilise the FTDI FT4232H, FT2232H or FT232H and

includes RS422 level shifters plus TXD/RXD LEDs to provide a visual indication of data traffic through the

module.

Figure 1.1 - USB2-H-6001-M

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Figure 1.2 - USB2-H-6002-M

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USB2-H-600X-M FAMILY Hi-Speed USB to Multi-Ports RS422 Adapter Data Sheet

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Figure 1.3 - USB2-H-6004/6008/6016-M

The module uses a standard USB B device connector for connection to an upstream host or hub port.

RS422-level signals, including modem handshake signals, are available on an industry-standard DE-9P

connector. The Singal and Dual port module also provide 5mm terminal block connector, customer can

use these signals friendly. The maximum RS422-level data rate are 8Mbps for each ports. .

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USB2-H-600X-M FAMILY Hi-Speed USB to Multi-Ports RS422 Adapter Data Sheet

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The USB2-H-600X-M modules require USB device driver, available free from http://www.easysync-

ltd.com/product-downloads, which are used to make the USB2-H-600X-M appear as Virtual COM Ports

(VCP). This allows existing serial communications software, such as HyperTerminal, to exchange data

through the USB2-H-600X-M to a legacy RS422 peripheral device.

1.2 LED Description

The USB2-H-600X-M has three type of LEDs to indicate a valid link as well as data traffic according to the

following table:

LED

Function

Description

LED quantity

Colour

Yellow

Enumerated ON when USB2-H-600X-M is configured

and ready

1

TxD Activity Flashes when data is transmitted from

the USB2-H-600X-M to the attached

RS422 device

Red

Each ports have one TXLED

Each ports have one RXLED

RxD

Flashes when data is transmitted from

the attached RS422 device to the USB2-

H-600X-M.

Green

Activity

Table 1.1 – LED Description

1.3 Block Diagram

1.3.1 Singal Port Block Diagram

USB B

Client

Connector

FTDI FT232H

High-Speed

USB Serial Bridge

RS422

Level

Shifter

DE-9P

Connector

10 Pin 5mm

Terminal

Block

Figure 1.4 - USB2-H-6001-M Block Diagram

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USB2-H-600X-M FAMILY Hi-Speed USB to Multi-Ports RS422 Adapter Data Sheet

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1.3.2 Dual Port Block Diagram

6 Pin 5mm

Terminal

Block A

DE-9P

Connector

A

RS422

Level Shifter

Channel A

FTDI FT2232H

USB B

Client

High-Speed

Connector

USB Serial Bridge

DE-9P

Connector

B

RS422

Level Shifter

Channel B

6 Pin 5mm

Terminal

Block B

Figure 1.5 - USB2-H-6002-M Block Diagram

1.3.3 Four, Eight and Sixteen Ports Block Diagram

DE-9P

Connector

A

RS422

Level Shifter

+5V DC

output

Switch

DE-9P

Connector

B

RS422

Level Shifter

Channel A Channel B

GL850G

USB Hub

IC

FTDI FT4232H

High-Speed

USB Serial Bridge

USB B

Client

Connector

DE-9P

Connector

C

RS422

Level Shifter

Channel D Channel C

Connector

DE-9P

Connector

D

RS422

Level Shifter

Figure 1.6 - USB2-H-6004/6008/6016-M Main Board Block Diagram

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USB2-H-600X-M FAMILY Hi-Speed USB to Multi-Ports RS422 Adapter Data Sheet

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DE-9P

RS422

Connector

Level Shifter

A

Connector

DE-9P

Connector

B

RS422

Level Shifter

Channel A Channel B

FTDI FT4232H

High-Speed

USB Serial Bridge

DE-9P

Connector

C

RS422

Level Shifter

Channel D Channel C

+5V DC

output

Switch

DE-9P

Connector

D

RS422

Level Shifter

Figure 1.7 - USB2-H-6008/6016-M Daughter Board Block Diagram

1.3.4 Block description

USB B Client Connector

This connector provides the interface for connection to a USB Host or Hub port. The maximum cable

length is 5 meters, according to the USB 2.0 specification.

Genesys GL850G

The Genesys GL850G is advanced version Hub solutions which fully comply with Universal Serial Bus

Specification Revision 2.0.

FTDI FT4232H

The FTDI FT4232H provides the Hi-Speed USB-to-Serial conversion. Operating system device drivers are

required in order to work with the FT4232H to provide the quad Virtual COM Port serial interfaces.

FTDI FT2232H

The FTDI FT2232H provides the Hi-Speed USB-to-Serial conversion. Operating system device drivers are

required in order to work with the FT2232H to provide the daul Virtual COM Port serial interfaces.

FTDI FT232H

The FTDI FT232H provides the Hi-Speed USB-to-Serial conversion. Operating system device drivers are

required in order to work with the FT232H to provide the one Virtual COM Port serial interface.

RS422 Level Shifter

The RS422 level shifter converts the signals provided by the Hi-Speed USB-to-Serial conversion of FTDI

into the voltage levels required by RS422 devices.

DE-9P Connector (Male)

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The DE-9P connector is configured in an industry standard (TIA/EIA-574) pin-out to provide connection

to RS422 peripherals through standard cables.

5mm Terminal Block

There are 5mm terminal block connectors provide the connection to RS422 peripherals devices.

+5V DC Output Switch

This switch can disable/Enable the +5VDC to an external devices.

Main Board

This is using on 4 and 16 ports product. When product is 4-ports that use a main board, when product is

16-ports product that use two main boards.

Daughter board

This is using on 8 and 16 ports product. When product is 8-ports that use a daughter board, when

product is 16-ports product that use two daughter boards.

1.4 Features

RS-422 serial ports by connecting to Hi-Speed USB 2.0 interface.

Easy plug & play installation and RS-422 device connection

Provide USB2.0 Hi-Speed(480Mbps) interface and works with USB 1.1 & 2.0 Host and Hub ports

Industry Standard FTDI chip set & device drivers for maximum compatibility

Microsoft Windows^®WHQL-certified, Mac OS X, Linux and Windows CE device drivers

Installs as standard Windows COM ports

COM port number can be changed to any available COM port number, to support HyperTerminal,

or any other serial communications software application running in Windows

Supports Windows Server 2008, 2003, Vista, XP 2000, Linux, Mac OS X

FIFO: USB2-H-6004/6008/6016-M - FT4232H 2K byte transmit buffer, 2K byte receive buffer

USB2-H-6002-M - FT2232H 4K byte transmit buffer, 4K byte receive buffer

USB2-H-6001-M - FT232H 1K byte transmit buffer, 1K byte receive buffer

RS-422 data signals: TxD+, TxD-, RxD+, RxD-, RTS+, RTS-, CTS+, CTS-, GND

Single, dual and quad Ports product are Powered by USB port. No external power adapter is

required. Note that they can also be powered from external power adapter.

Serial port speed up to 8Mbps

Serial Communication Parameters

o

Parity: None, Even, Odd

Data bits: 7, 8

Flow control: RTS/CTS, X-ON/X-OFF, None

The standard DE-9P male connectors

LEDs indicate USB Enumeration, RxD, TxD for monitoring port status & easy diagnostics

Operating temperature of -40°C to +85°C

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5mm terminal block connectors

+5V DC power provides external devices

o

The maximum current of 4, 8 and 16 port are 30mA

The maximum current of 1 and 2 port are 80mA

Note. The Windows CE5.0 can only support COM0~COM9, When the FTDI COM ports are over the

Windows CE available COM ports, you cannot use FTDI COM port.

Note. HyperTerminal is no longer provided with Windows 7/Vista.

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1.5 Performance Figures

Parameter

Performance

USB Interface

480Mbps USB 2.0 High-Speed

Standard Windows baud rates (300bps to 921.6Kbps)

RS422 Interface

Custom baud rates (300bps to 10Mbps) through baud rate aliasing.

See FTDI Application Note: AN_120_Aliasing_VCP_Baud_Rates

Max Cable Length

USB=5m, RS422=12m (for 10Mbps)

Table 1.2 - Performance Figures

Part Number

Description

USB2-H-6016-M

USB2-H-6008-M

USB2-H-6004-M

USB2-H-6002-M

USB2-H-6001-M

Hi-Speed USB to 16-Port RS422 module

Hi-Speed USB to 8-Port RS422 module

Hi-Speed USB to quad-Port RS422 module

Hi-Speed USB to dual-Port RS422 module

Hi-Speed USB to single-Port RS422 module

Table 1.3 - Ordering Information

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2 Installation

2.1 Hardware Configurations

2.1.1 Wiring

Insert the A-plug of USB cable into an available USB Host or Hub port. Insert the B-plug of USB cable

into the B-receptacle on the USB2-H-600X-M.

The USB2-H-600X-M family follow EIA-422 standard as a Data Terminal Equipment (DTE) device. If the

RS422 equipment being connected is a Data Communication Equipment (DCE) device, it’s typical that a

straight-through cable can be used.

DTE Pin Number

1

Signal Name

Expected Connect Signal

RXD-

TXD- = Transmit Data,

negative polarity

2

3

4

TXD+ = Transmit Data,

positive polarity

RXD+

TXD+

TXD-

RXD+ = Receive Data,

positive polarity

RXD- = Receive Data,

negative polarity

5

6

GND = signal ground

GND

CTS-

RTS- = Request To Send,

negative polarity

7

8

9

RTS+ = Request To Send,

positive polarity

CTS+

RTS+

RTS-

CTS+ = Clear To Send,

positive polarity

CTS- = Clear To Send,

negative polarity

Table 2.1 – RS422 DTE to DCE connection with straight-through cable

Some serial devices may require certain handshake signals to be connected. Refer to your device

manual for cabling details. When you use the the handshake signals, please disable the +5V DC power

output of SW3.

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Switch Setting

The USB2-H-6004-M, USB2-H-6008-M and USB2-H-6016-M have this +5V Output disable/enable switch.

This can be changed as shown in the following table:

SW

Ports

Open

(off)

Closed

(on)

SW

Ports

Position

4 Ports product

16 Ports product

1

2

3

4

CN4

CN3

CN2

CN1

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

CN4

CN3

SW1

SW2

SW3

SW4

CN2

CN1

8 Ports product

CN8

1

2

3

4

1

2

3

4

CN4

CN7

CN3

CN2

CN1

CN8

CN7

CN6

CN5

CN6

SW1

CN5

5V Out Disable

5V Out Enable

CN 12

CN 11

CN 10

CN 9

CN 16

CN 15

CN 14

CN 13

SW2

Table 2.2 – Switch Setting Configuration of the 4, 8 and 16 ports product.

5V Out:

The CTS- pin of each channel can alternatively be used to output a +5V supply if the RI function is not

required. This +5V supply is available after the USB2-H-600X-M family are fully enumerated and device

drivers are loaded.

The single and dual port models do not have the switch as the +5V output is only available on the

terminal block on these models. They can provide a 5V output with a maximum current of 80mA (when

using USB BUS power), or when using the external power adapter the maximum currect can be increased.

2.2 Device Driver Installation

The USB2-H-600X-M Series adaptor drivers are available for download from:

http://www.easysync-ltd.com/product-downloads

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2.2.1 Microsoft Windows

With the device drivers being Windows Hardware Quality Labs (WHQL) certified, they are also available

through download directly from the Microsoft^®Windows^®Update service. This is the best choice when

connecting the USB2-H-600X-M Series to a computer running Windows Vista. Additional installation

options are noted below:

Installation Executable on Windows XP

1) Login to your system as Administrator, or a user with Administrator rights.

2) Prior to connecting the USB2-H-600X-M Series to the USB Host or Hub port, download the latest

device driver version from the EasySYNC web site.

3) Run this executable to install the device drivers.

4) Connect the USB2-H-600X-M Series to your computer. A notification will appear near the task

bar indicating that new hardware has been installed and is ready for use. It is normal if this

notice appears twice.

Figure 2.1 - Hardware Ready

Windows Update shown on Windows XP

You must have an active Internet connection and the Windows Update Service enabled.

1) Connect the USB2-H-600X-M Series to your USB Host or Hub.

2) The ―Found New Hardware‖ Wizard will appear. The first dialog should ask whether it is

acceptable to use the Windows Update Service to find the device driver.

Figure 2.2 – Found New Hardware Wizard

3) Select one of the ―Yes‖ choices and click ―Next‖.

4) The following screen appears:

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Figure 2.3 – Automatic Install

5) Wait while the driver is found, downloaded, and installed. This step may take a couple minutes

depending on the Internet speed.

6) After the files are found and installed, click ―Finish‖ to complete the installation.

Figure 2.4 - Complete Hardware Installation

7) Steps 2 through 6 will repeat. The first time installs the basic USB Serial Converter in the USB

device tree. The second time installs the Virtual COM Port layer in the Ports tree and assigns the

COM port number.

8) When both portions of the device driver have been installed successfully, the following message

will appear, indicating that the device is ready.

Figure 2.5 - Hardware Ready

COM Port Assignment

Next, to determine which COM port has been assigned, open the Windows Device Manager from the

System Control Panel.

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Figure 2.6 - Device Manager

Click on the Plus ―+‖ sign next to the Ports tree to list the available COM port. You will see ―USB Serial

Port‖, followed by a COMn assignment. In the figure below, the USB2-H-600X-M-Dual port are assigned

to COM3 to COM4, so how many COM Ports are depend on your device.

Figure 2.7 - COM Port Assignment

Use this COM port number with your application software in order to access the USB2-H-600X-M.

If an application requires use of a different COM port number, the assignment may be changed through

the Advanced Driver Options settings.

From the Device Manager listing above, right-click on the USB Serial Port and select Properties.

Figure 2.8 – Access COM Port Properties

Next, click on the ―Port Settings‖ tab.

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Figure 2.9 - Settings Tab

Then click on the ―Advanced…‖ button.

Figure 2.10 - Advanced Options

This will display the various advanced settings. Note the COM port assignment in the upper left. Clicking

on the drop-down list will display the available port numbers. Select one that is not in use and click OK

on each dialog box to activate the selection. Windows will remember this COM port number.

2.2.2 Mac OS X, Linux, Windows CE

Device drivers and FTDI installation guides for Mac OS X, Linux and Windows CE are available for

download on the EasySYNC web sites. Follow the respective FTDI installation guides for the chosen

operating system.

The Windows CE5.0 can only support COM0~COM9, When the FTDI COM ports are over the Windows CE

available COM ports, you could not use FTDI COM port.

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3 Connections

3.1 External Connectors

3.1.1 USB

The USB2-H-600X-M family are a downstream USB 2.0 High-speed Device. A standard USB Series ―B‖

receptacle is mounted inside the USB2-H-600X-M FAMILY to facilitate connection to an upstream USB

Host or Hub.

Pin Number

Pin Type

Description

1

Power

VBUS – USB Power provided from upstream USB Host or Hub

D– = USB data signal, negative polarity

D+ = USB data signal, positive polarity

GND = USB signal ground

Bidirectional

Ground

2

3

4

Shield

Case Ground

Drain = typically connected to the host PC case

Table 3.1 – USB "B" Receptacle Pin-Out

3.1.2 RS422

The four RS422 ports are configured as Data Terminal Equipment (DTE), with a 9-contact D-Sub Pin

connector. Pin assignments are according to TIA/EIA-422.

Pin Number

Pin Type

Description

1

2

3

4

5

6

7

8

9

Output

TXD- = Transmit Data, negative polarity

TXD+ = Transmit Data, positive polarity

RXD+ = Receive Data, positive polarity

RXD- = Receive Data, negative polarity

GND = signal ground

Input

Ground

Output

RTS- = Request To Send, negative polarity

RTS+ = Request To Send, positive polarity

CTS+ = Clear To Send, positive polarity

CTS- = Clear To Send, negative polarity or +5V DC output

Output

Input

Input or PWR Output

Table 3.2 – DE-9P RS422 Pin-Out

In addition, The CTS- Pin of 4, 8 and 16 Ports can provide +5VDC to an external device with a maximum

current draw of 30mA once the 4, 8 and 16 Port products have been enumerated by the system, and the

Pin 9 of single and dule port models only have the RI function.

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3.1.3 5mm Terminal Block

The Singal and Dual port product also provide another interface for customer using that is 5mm terminal

block connector. Each RS422 signals also connected through a 5mm terminal block connector. This is

shown in the following table:

Single Port Terminal Block

Terminal

Block Pin

Number

Pin Type

Description

1

2

Output

Input

TXD- = Transmit Data, negative polarity

TXD+ = Transmit Data, positive polarity

RXD+ = Receive Data, positive polarity

RXD- = Receive Data, negative polarity

GND = signal ground

3

4

Input

5

Ground

Output

Input

6

RTS- = Request To Send, negative polarity

RTS+ = Request To Send, positive polarity

CTS+ = Clear To Send, positive polarity

CTS- = Clear To Send, negative polarity

+5V DC output

7

8

9

Input

10

PWR output

Table 3.3 –USB2-H-6001-M Terminal Block interface

Figure 3.1 - USB2-H-6001-M Terminal Block Connector Assignment

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Dual Port Terminal Block

Terminal Block Pin

Number (Channel

1 and Channel 2)

Pin Type

Description

1

2

3

4

5

6

Output

TXD- = Transmit Data, negative polarity

TXD+ = Transmit Data, positive polarity

RXD+ = Receive Data, positive polarity

RXD- = Receive Data, negative polarity

+5V DC output

Input

PWR output

Ground

GND = RS422 signal ground

Table 3.4 –USB2-H-6002-M Terminal Block interface

Figure 3.2 - USB2-H-6002-M Terminal Block Connector Assignment

In addition, one pin of terminal block connector can provide +5VDC to an external device with a

maximum current draw of 80mA once the USB2-6001/6002-M have been enumerated by the system.

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4 Termination and BIAS Resistors Setting

Figure 4.1 shows a general-purpose RS-422 network. Each node has a transceiver that interfaces

between RS-422 and TTL logic levels. The each link of TXD, RXD pairs also has two 10KΩ biasing

resistors which hold the line in a known state when no drivers are enabled. The USB2-H-600X-M units

have internal biasing circuits. The default values are a 10K Ω pullup from line Data+ to VCC, and a 10K Ω

pulldown from line Data- to ground. However, adding a termination resistor defeats their ability to bias

the line and so additional external resistors may be required (see Figure 4.2). With no termination and

when no drivers are enabled, the biasing resistors hold line Data+ more positive than line Data-. The RTS

and CTS pairs don’t need to have the bias resistors because the drivers are always enabled when devices

are powered on.

RS-422 protocol also supports multi-devices in a network. One device is transmitting and all others are

receiving in this case. If there are over 20 devices in the network, the parallel value of all TX/RX bias

resistors will reduce to 500 Ω, and the value will be too small and the transceiver output may not drive

the signal to high or low correctly. Removing the internal biasing resistors from some units will improve

the signal quality in this case. There should not be issues if the parallel value of bias resistors is over 500

Ω.

Figure 4.1 – RS422 Network

Adding terminations will reduce voltage reflections that can cause the receiver to misread logic levels.

The receiver sees reflected voltages as output switches, and the line settles from its initial current to its

final current. The termination eliminates reflections by making the initial and final currents equal. The

circuit has two 120-Ω terminating resistors connected in parallel, at or just beyond the final node at each

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end of the link. One end of the link also has two 750-Ω biasing resistors. The below figure shows the

example when adding termination

Figure 4.2 – RS422 Network with terminations

The final current is a function of the line termination, the receivers’ input impedance, and the line’s series

impedance. In a typical RS-422 line without a termination, the initial current is greater than the final

current because the characteristic impedance is less than the receivers’ combined input impedance. On a

line without a termination, the first reflection occurs when the initial current reaches the receiver. The

receiver’s input can absorb only a fraction of the current. The rest reflects back to the driver. As the

current reverses direction, its magnetic field collapses and induces a voltage on the line. As a result, the

receiver initially sees a greater voltage than what was transmitted.

When the reflected voltage reaches the driver, which has a lower impedance than the line, the driver

absorbs some of the reflection and bounces the rest back to the receiver. This reflection is of opposite

polarity to the first reflection and causes the receiver to see a reduced voltage. The reflections

bounce back and forth like this for a few rounds before they die out and the line settles to its final current.

If the line terminates with a resistor equal to the line’s characteristic impedance, there are no reflections.

When the initial current reaches the termination, it sees exactly what it was expecting—a load equal to

the line’s characteristic impedance. The entire transmitted voltage drops across the load. In a network

with two parallel terminations, the drivers drive two lines with each ending at a termination.

When two 120Ω terminations are added, the difference between Data+ and Data- shrinks to a few

millivolts if the bus is idle, much less than the required 200 mV. The solution is to add smaller resistors in

parallel with the internal biasing so that a greater proportion of the series voltage drops across the

termination. The RTS/CTS pair will not have such issues requiring the additional of adding bias resistors

because the transmission is always enabled.

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The size of the biasing resistors is a tradeoff. For a greater voltage difference and higher noise immunity

on an idle line, use smaller values. For lower power consumption and a greater differential voltage on a

driven line, use larger values.

The below tables 4.1 shows the components associated with the bias resistors in each module. All

termination resistors in the USB2-H-600X-M can be enabled or disabled by switches. Please refer to table

2.12 for details. The user can also remove or modify the bias resistors to meet their requirements. The

default values for the internal biasing resistors is 10KΩ.

Bias Resistor Numbers

Modules Name

Daughter Board

Main Board

USB2-H-60016-M

USB2-H-6008-M

USB2-H-6004-M

USB2-H-6002-M

USB2-H-6001-M

(R41,R47),(R46,R48),(R49,R67),(R66,R68) (R38,R40),(R39,R41),(R42,R48),(R47,R49)

(R38,R40),(R39,R41),(R42,R48),(R47,R49)

(R51,R53),(R52,R54)

R25,R26

Termination Resistor Numbers

Modules Name

Daughter Board

Main Board

USB2-H-60016-M

USB2-H-6008-M

USB2-H-6004-M

USB2-H-6002-M

USB2-H-6001-M

(R27,R31),(R28,R32),(R29,R33),(R30,R34) (R30,R34),(R31,R35),(R32,R36),(R33,R37)

(R30,R34),(R31,R35),(R32,R36),(R33,R37)

(R19,R22),(R20,R23)

R7,R8

Table 4.1 –Bias And Termination Resistor Numbers Of Each Modules

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5 Electrical details

5.1 USB

Parameter

Description

Minimum

4.25

Typical

5.0*

Maximum

5.25

Units

V

Conditions

*Present when USB

cable is attached and

USB Host or Hub

powered.

USB_VCC

Input Power Voltage*

1 port

2 ports

4 ports

***Does not include

power supplied to

external device when

CTS- pin is configured

for +5V output

5.2 104 5.3 105

I_cc

USB current

220

360

240

380

mA

Table 5.1 - USB Electrical Details

5.4 5V Power Adapter

Parameter

Description

Minimum

4.75

Typical

5

Maximum

5.25

Units

Conditions

5V Power

Adapter provide 5V 2A

of power.

Power Voltage

V

adapter_VCC

***Does not include

power supplied to

external device when

CTS- pin is configured

for +5V output

8 ports

795

815

I_cc

5V current

mA

16 ports

1515

1535

Table 5.2 - 5V Power Adapter Electrical Details

5.5 RS422

Parameter

Description

Minimum

2

Typical

Maximum

Units

V

Conditions

Transmitter output

voltage swing

RL = 50R CL = 50pF

V_trans

Receiver input voltage

range

RL = 50R CL = 50pF

V_rec

-7

+12

V

For all RS-422 Inputs

and Outputs pin

KV

ESD HBM

N/A

±15

Table 5.3 - RS422 Electrical Details

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5.6 RS422

Parameter

Description

Minimum

Typical

+12

Maximum

Units

Conditions

Receiver Input

Common-mode input

voltage range

VCM

IN

-7

V

VIN = +12V

1.0

Input Current

mA

VIN = -7V

-0.8

Differential Threshold

Voltage,VTH

+0.2

V

VTH

VIHYST

-0.2

12

Input Hysteresis

mV

kΩ

20

15

Input Resistance, RIN

RIN

Transmitter Output

Differential Output

Voltage,

dVOD

With RL = 54Ω.

5

V

VOD

ESD Tolerance

ESD HBM

1.5

CL = 50pF *

RS422 Inputs and

Outputs

kV

±15

±8

RS-485 Inputs and

Outputs

EN61000-4-

2ContactDischarge

RS-485 Inputs and

Outputs

EN61000-4-

2AirGapDischarge

±15

Table 5.4 – RS422 Electrical Details

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6 Physical Environment Details

6.1 Storage

Parameter Description

Minimum

-65

Typical

Maximum

+150

Units

^oC

Conditions

Storage Temperature

Range

T

Table 6.1 - Storage Temperature

6.2 Operating

Parameter Description

Minimum

Typical

Maximum

+85

Units

^oC

Conditions

Operating Temperature

5% to 95% RH,

non condensing

T

–40

Range

Table 6.2 - Operating Temperature

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7 Physical Dimensions

All dimensions are in mm, and the tolerance are +/-0.1mm.

7.1 USB2-H-6001-M Dimension

Figure 7.1 - USB2-H-6001-M Top Cover of Dimension

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Figure 7.2 - USB2-H-6001-M Bottom Cover of Dimension

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7.2 USB2-H-6002-M Dimension

Figure 7.3 - USB2-H-6002-M Top Cover of Dimension

Figure 7.4 - USB2-H-6002-M Bottom Cover of Dimension

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7.3 USB2-H-6004-M Dimension

Figure 7.5 - USB2-H-6004-M Top Cover of Dimension

Figure 7.6 - USB2-H-6004-M Bottom Cover of Dimension

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7.4 USB2-H-6008-M Dimension

Figure 7.7 - USB2-H-6008-M Top Cover of Dimension

Figure 7.8 - USB2-H-6008-M Bottom Cover of Dimension

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7.5 USB2-H-6016-M Dimension

Figure 7.9 - USB2-H-6016-M Top Cover of Dimension

Figure 7.10 - USB2-H-6016-M Bottom Cover of Dimension

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8 Environmental Approvals & Declarations

8.1 EMI Compatibility

FCC and CE

The USB2-H-600X-M family have been tested to be compliant with both FCC Part 15 Subpart B and

European EMC Directive.

NOTE: This is a Class B product. In a domestic environment, this product may cause radio interference,

in which case the user may be required to take adequate measures.

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device,

pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against

harmful interference in a residential installation. This equipment generates uses and can radiate radio

frequency energy and, if not installed and used in accordance with the instructions, may cause harmful

interference to radio communications. However, there is no guarantee that interference will not occur in a

particular installation. If this equipment does cause harmful interference to radio or television reception,

which can be determined by turning the equipment off and on, the user is encouraged to try to correct

the interference by one or more of the following measures:

Reorient or relocate the receiving antenna.

Increase the separation between the equipment and receiver.

Connect the equipment into an outlet on a circuit different from that to which the receiver is

connected.

Consult the dealer or an experienced radio/TV technician for help.

8.2 Safety

The USB2-H-600X-M family are defined as Limited Power Supply (LPS) device, with operating voltages

under 60VDC.

8.3 Environmental

The USB2-H-600X-M family are a lead-free device that complies with the following environmental

directives: RoHS, WEEE, REACH, PFOS and DecaBDE.

8.4 Reliability

The USB2-H-600X-M family are designed as a robust USB-Serial module for use in many environments.

There are no user-serviceable parts. Any failure will require a replacement of the unit.

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8.5 Import / Export Information

Import / Export Information

Country of Origin

Harmonized Code

China

8471-80-1000

Product Description USB to RS422 Development Module, Single/Dual/Quad/Eight/Sixteen COM Port

USA ECCN

EAR99 – No License Required

Table 8.1 - Import / Export Information

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9 Troubleshooting

9.1 Hardware

Cables are the most common sources of trouble with external devices.

Check the following:

-

USB cable is properly inserted at both ends

Computer power is ON

Computer is not in Sleep or Standby

If a USB Hub is used, be sure it is set for ―Self-Powered‖ operation

If a USB Hub is used, be sure all cables are properly inserted

If all the above are OK, the Yellow LED should be lit, indicating the device has been recognized by the

USB subsystem.

RS422 cables – check the following:

-

Output signals (TXD+, TXD-, RTS+, RTS-) are connected to the respective inputs (RXD+, RXD-,

CTS+, CTS-) in each direction.

-

Check for specific handshake requirements of your RS422 peripheral.

If handshake signals are not used, ensure the application is set to ―No Hardware Handshake‖, or

equivalent.

-

Test the port with a loop-back connector. Connect TXD+ to RXD+, TXD- to RXD-, RTS+ to CTS+ and

RTS- to CTS-. Use a simple terminal program to check that data is transmitted and received.

9.2 Device Driver

Ensure the latest device driver is in use. See http://www.easysync-ltd.com/product-downloads.

If other devices with FTDI chips are installed in the system, check with all manufacturers of these devices

for the latest device drivers.

See the FTDI installation guides for additional details: http://ftdichip.com/Documents/InstallGuides.htm

Common Windows Device Driver Troubles:

DEVICE TIMES OUT: The default settings of the device driver assume typical data transfers of

hundreds to thousands or more bytes at a given time. Some applications, such as a GPS device,

only send data in short packets, often only a few bytes. If this is the case, it may be necessary

to adjust the driver buffer size and/or latency timer to smaller values. These values can be

adjusted through the Advanced driver options as noted in Figure 2.10. The buffer size can be

reduced to 64 bytes. The latency timer can be set as low as 2ms. A setting of 1ms will cause

unnecessary USB traffic and could adversely affect data transmission.

ERRATIC MOUSE POINTER: The device driver defaults to query an attached device to find out

whether it is a mouse or modem, consistent with native COM port operation. Some RS422

peripherals constantly send short packets of data, causing the host system to ―think‖ a mouse or

modem has been attached. These short packets will interfere with normal mouse operation

causing the pointer to jump around the screen. If this happens, disconnect the RS422 device and

uncheck the Serial Enumerator option, also found on the Advanced driver options screen in Figure

2.10.

COM PORT IN USE: Windows keeps track of all COM port assignments. If multiple FTDIChip

products have been connected to a single system, the COM port number will increase, even if the

other devices are not attached. If the higher COM port assignments are not acceptable for the

application, known unused COM port numbers should be uninstalled according to the FTDI

installation guide: http://ftdichip.com/Documents/InstallGuides.htm.

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9.3 Technical Support

Technical support may be obtained from your nearest EasySYNC office. See details below.

E-Mail (Support): support@easysync-ltd.com Web: http://www.easysync-ltd.com/product-downloads

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10 Contact Information

Head Office – Glasgow, UK

EasySYNC Limited

Unit 1, 2 Seaward Place,

Centurion Business Park

Glasgow, G41 1HH

United Kingdom

Tel: +44 (0) 141 418 0181

Fax: +44 (0) 141 418 0110

Branch Office – Hillsboro, Oregon, USA

EasySYNC Limited (USA)

7235 NW Evergreen Parkway, Suite 600

Hillsboro, OR 97123-5803

USA

Tel: +1 (503) 547 0909

Fax: +1 (503) 547 0990

E-Mail (Sales)

sales@easysync-ltd.com

E-Mail (Support)

E-Mail (General Inquiries)

Web Site URL

support@easysync-ltd.com

admin@easysync-ltd.com

http://easysync-ltd.com

Web Shop URL

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Appendix A – List of Figures and Tables

List of Figures

Figure 1.1 - USB2-H-6001-M ...................................................................................... 4

Figure 1.2 - USB2-H-6002-M ...................................................................................... 5

Figure 1.3 - USB2-H-6004/6008/6016-M................................................................... 6

Figure 1.4 - USB2-H-6001-M Block Diagram............................................................... 7

Figure 1.5 - USB2-H-6002-M Block Diagram............................................................... 8

Figure 1.6 - USB2-H-6004/6008/6016-M Main Board Block Diagram........................ 8

Figure 1.7 - USB2-H-6008/6016-M Daughter Board Block Diagram.......................... 9

Figure 2.2 – Found New Hardware Wizard ............................................................... 15

Figure 2.3 – Automatic Install.................................................................................. 16

Figure 2.4 - Complete Hardware Installation............................................................ 16

Figure 2.5 - Hardware Ready.................................................................................... 16

Figure 2.6 - Device Manager..................................................................................... 17

Figure 2.7 - COM Port Assignment............................................................................ 17

Figure 2.8 – Access COM Port Properties.................................................................. 17

Figure 2.9 - Settings Tab .......................................................................................... 18

Figure 2.10 - Advanced Options................................................................................ 18

Figure 3.1 - USB2-H-6001-M Terminal Block Connector Assignment ........................ 20

Figure 3.2 - USB2-H-6002-M Terminal Block Connector Assignment ........................ 21

Figure 4.1 – RS422 Network..................................................................................... 22

Figure 4.2 – RS422 Network with terminations........................................................ 23

Figure 7.1 - USB2-H-6001-M Top Cover of Dimension .............................................. 28

Figure 7.2 - USB2-H-6001-M Bottom Cover of Dimension......................................... 29

Figure 7.3 - USB2-H-6002-M Top Cover of Dimension ............................................. 30

Figure 7.4 - USB2-H-6002-M Bottom Cover of Dimension......................................... 30

Figure 7.5 - USB2-H-6004-M Top Cover of Dimension .............................................. 31

Figure 7.6 - USB2-H-6004-M Bottom Cover of Dimension......................................... 31

Figure 7.7 - USB2-H-6008-M Top Cover of Dimension .............................................. 32

Figure 7.8 - USB2-H-6008-M Bottom Cover of Dimension......................................... 32

Figure 7.9 - USB2-H-6016-M Top Cover of Dimension .............................................. 33

Figure 7.10 - USB2-H-6016-M Bottom Cover of Dimension....................................... 33

List of Tables

Table 1.1 – LED Description........................................................................................ 7

Table 1.2 - Performance Figures............................................................................... 12

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Table 1.3 - Ordering Information.............................................................................. 12

Table 2.1 – RS422 DTE to DCE connection with straight-through cable.................... 13

Table 2.2 – Switch Setting Configuration of the 4, 8 and 16 ports product............... 14

Table 3.1 – USB "B" Receptacle Pin-Out................................................................... 19

Table 3.2 – DE-9P RS422 Pin-Out ............................................................................. 19

Table 3.3 –USB2-H-6001-M Terminal Block interface ............................................... 20

Table 3.4 –USB2-H-6002-M Terminal Block interface .............................................. 21

Table 4.1 –Bias And Termination Resistor Numbers Of Each Modules ...................... 24

Table 5.1 - USB Electrical Details.............................................................................. 25

Table 5.2 - 5V Power Adapter Electrical Details........................................................ 25

Table 5.3 - RS422 Electrical Details.......................................................................... 25

Table 5.3 – RS422 Electrical Details ......................................................................... 26

Table 6.1 - Storage Temperature.............................................................................. 27

Table 6.2 - Operating Temperature .......................................................................... 27

Table 7.1 - Import / Export Information .................................................................. 35

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Appendix B – Revision History

Version draft

Version 1.0

First external draft for comment

First release

2010-10-04

2012-01-19

41


型号：	USB2-H-6004-M
厂家：	ETC
描述：	USB2-H-600X-M FAMILY Hi-Speed USB to Multi-Ports RS422 Adapter
文件：	总42页 (文件大小：1368K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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