UHX1-144-5 [RADIOMETRIX]

NBFM Multichannel 500mW VHF Transceiver; NBFM多通道500mW的VHF收发器


型号：	UHX1-144-5
厂家：	RADIOMETRIX LTD
描述：	NBFM Multichannel 500mW VHF Transceiver NBFM多通道500mW的VHF收发器
文件：	总7页 (文件大小：370K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Radiometrix

Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England

Issue A, 20 November 2007

UHX1-xxx-5

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NBFM Multichannel 500mW VHF Transceiver

UHX1 is small dual frequency multi-

channel VHF transceiver with up to

500mW RF power output.

The dual frequency capability allows

UHX1’s transmitter section to be

operated on one frequency while

receiver frequency on another.

Figure 1: UHX1-144-5

Features

ꢀ

Conforms to ETSI EN 300 220-3 and EN 301 489-3

High performance double superhet, 128 channel PLL synthesizer

500mW RF power output: adjustable via serial command

Data rates up to 5 kbps for standard module

Usable range over 1km

Fully screened. Low profile

Feature-rich interface (RSSI, analogue and digital baseband)

Digital RSSI output

Incorporate a 1200baud modem

Re-programmable via RS232 interface

Low power requirements

Applications

ꢀ

Handheld terminals

Heavy vehicle/machine remote controls

EPOS equipment, barcode scanners

Data loggers

Industrial telemetry and telecommand

In-building environmental monitoring and control

High-end security and fire alarms

Vehicle data up/download

Technical Summary

ꢀ

Operating frequency: Any 2MHz segment in 140- 175MHz

128 channels selected by serial interface

16 channels selected by parallel interface

Transmit power: 500mW (+27dBm) nominal. Adjustable 1 – 500mW

Supply range: 5V regulated transmit, 3.1 - 15V receive,

Current consumption: 330mA (at 500mW output) transmit, 25mA receive

Data bit rate: 5kbps max. (standard module)

Receiver sensitivity: -118dBm (for 12 dB SINAD)

Size: 67 x 30 x 12mm

Radiometrix Ltd

UHX1 Data Sheet (preliminary)

page 1

Radiometrix Ltd

UHX1 Data Sheet (preliminary)

page 2

Figure 3: Provisional UHX1 footprint

Pin Description

Pins

Normal mode

Serial mode

Modem

mode

User

RF Gnd

RF ground

RF in/out To the antenna

RF Gnd

GND

RF ground

Vcc (TX)

5V regulated supply for TX

TXD

TXE

DC coupled input for TTL/ CMOS logic

Transmit enable.

Low = TX mode

DC supply input (3.1 –15V) for receiver

Parallel channel select MSB

Parallel channel select

GND

Vcc

Serial read back

TBA

PGM in

BUSY

MOD TXD

MOD RXD

PGM in

Parallel channel select

Parallel channel select LSB

DC level between 0.5V and 2.5V. 60dB dynamic

range

RSSI

RXD

AF out

Open collector output of data slicer

500mV p-p audio. DC coupled, approx 0.8V bias

NOTES:

1. No inversion occurs between TXD and RXD. However, AF out is inverted relative to mod in.

2. P0 - P3 (parallel channel selects) and TXE are active LOW and have internal 47K pullups to 3v.

3. Open collector output RXD has a 47K pullup to 3v.

4. The software incorporates a 1200baud dumb modem, compatible with that implemented in

other Radiometrix narrowband units ( i1200 tones and format ). Modem operation is selected by

a serial command.

5. Main serial port (P0-P3) operates at 9600 baud. (Command set is not the same as TR2M, SMX

families). The unit is capable of operating in 'basic' parallel channel select only mode, or in

serial controlled 'expanded' mode.

6. Transmit power can be set by serial command.

7. RSSI, and other status information, can be read back as a digital value. (on P3).

7a. The RSSI is a high impedence output. If a low impedence voltage source (an op-amp output) is

connected to the RSSI out pin then this voltage (0-2.5v) will override the RSSI value during

RSSI 'digital read' operations.

8. If analogue transmit modulation is needed, then connect a series 1uF cap + 500K trimmer (a

multiturn is advised) in the 'baseband TXD' circuit. Adjust trimmer for 90% of peak deviation

(+/- 2.7KHz) at mean input level.

9. The high current (250mA max.) transmitter supply (5v regulated) is fed to a separate connector

10. A version without a RX/TX switch is available. This unit has a 4 pin RF connector (RX, GND,

TX, GND) and is intended for use with external power amplifiers

Radiometrix Ltd

UHX1 Data Sheet (preliminary)

page 3

Serial interface commands

The UHX1 user interface is accessed through the four parallel pins (P0/serial through P3).

It has four operating modes:

1. Parallel.

Frequency of operation is selected as one of 16 (chans 0-15), by means of a 4 bit inverted value applied

to P0-P3. The P0 pin will also respond to a LOCKSERIALMODE datastream (inverted rs232, 9600

baud), which will cause the radio to enter serial mode. In parallel mode, the IDENT command string is

still decoded, but the unit remains in parallel mode.

2. Serial

Frequency of operation, radio set up, power output and various other parameters are controlled by

command strings sent to P0. Pin P3 functions as a 'readback' port while P1,2 are not used in this mode.

In this mode, decimal values are used (to simplify direct manual programming via a terminal)

Commands include:

Commands

Function

empty command buffer

read back buffer contents

delete last character

process buffer

Notes

? or /

<cr>

PARALLEL

return to the basic, parallel mode (and turn

modem off)

DUMP

MODEM

NOMODEM

read back contents of EEPROM (output on P3)

activate 1200 baud modem

de-activate 1200 baud modem

DEFCH ccc

DEFPOW pp

set default channel (non-volatile)

set default tx power (non-voltatile)

CHAN ccc

POWER pp

RSSI

jump to channel (volatile)

select tx power (volatile)

single read of RSSI (output on P3)

SHORT

enter short command mode

(The following commands are used to set up the radio operating characteristics, and should be viewed

with caution. Especially the CALPOWER command, which initiates a multiple write operation to the

power calibration table )

Commands

NDIV nnnnn

RDIV rrrrr

RLOAD rrrrr

OFFSET ooooo

LOAD aa nnnnn

START nnnnn

STEP i

Function

Notes

force N divider value (volatile)

force R divider value (volatile)

Set R divider value

Set RX offset

Set N values for first 16 channels

Set N value for ch 16

Set increment for table

Set highest permitted channel number

Set maximum power output (500mW)

(see factory procedures for more details)

Generate a 250Hz test modulation (only fuctions in

TX mode, cancelled by sending a <cr> byte)

Readback a single byte, depending on current

mode:

LIMIT ccc

SETPOW eee

CALPOWER (etc)

TEST

IDENT

Radiometrix Ltd

UHX1 Data Sheet (preliminary)

page 4

Commands

Function

Parallel:

Serial:

Notes

Short:

Modem:

(Channels 0-15 are individually programmed by the LOAD operation. Channels 16-127 are a

consecutive table, using the START value as a start point (=channel 16) and increasing the N value by

STEP with each increase in channel number)

ccc

= a channel number from 00 to 127

= a two digit channel number from 00 to 15

nnnnn = synthesizer N register value, (up to 65535)

rrrrr = synthesizer R register value, (up to 16383)

= power setting value (3-30: a value of 30 corresponds to a power output of +27dBm)

= table step (increments of N) (0-7)

ooooo = receive mode frequency offset

eee = power calibration figure

N = channel frequency / (10MHz / R)

10MHz / R = 25KHz , so R = 400 (usually)

receive offset = 21.4MHz / (10MHz / R) , so = 856 (usually)

A pause of at least 50mS must be allowed after operations which result in eeprom programming

operations (all except NDIV, RDIV, GOTO, PSET and RSSI). This allows the programming cycle to

complete.

Instructions marked ' # ' output a three byte ' OK<cr> ' sequence after sucessfully completing their

eeprom programming cycles

When first powered up, the unit will operate on channel and output level specified by the last CHAN

and POWER instructions, irrespective of previous NDIV, RDIV, CHAN or PSET operations)

3. Short

A limited range of radio functions are controlled by sending a single byte to PO

- 127

select channel

select power

(volatile)

( = byte -128) (volatile)

(output on P3)

128 - 159

200

201

222

single read of RSSI

single byte read, as for IDENT command

reception of 16 consecutive 222 bytes returns radio to serial mode.

This mode of operation is intended to provide a simple, fast, serial command mode.

4. Modem

Commands are interpreted as in SERIAL mode (and 'short' mode may be selected.) In this mode the

unit operates as a simple 1200 baud packet modem, with TXD (in) on P2 and RXD (out) on P1.

The TXE pin does not control tx switching in this mode, but rather the presence of valid data in the tx

buffer initiates a transmit burst. No handshaking is provided, and the unit has a sufficient over-link

data rate to transparently 'stream' continuous data. Error correction, re-transmission of corrupt packets

and addressing are not provided.

This mode is compatible with other Radiometrix 'i 1200' mode equipment, including the narrow band

eval kit.

Notes:

1. Unlike in the RLC and TLC units, the LOCKSERIALMODE (and FAST) commands are non-

volatile. Once a serial mode is selected, the unit will power up in this mode until a PARALLEL

command is received.

Radiometrix Ltd

UHX1 Data Sheet (preliminary)

page 5

2. The command interpreter IS case sensitive. Use upper case.

3. Spaces are optional (they are not decoded), provided the command line does not exceed 16

characters.

4. When manually programming this unit we recommend setting your terminal to local echo. The

'backspace' key functions normally.

5. All serial communications use 9600baud 'inverted RS232' 8 bit data, no parity, 1 start bit, 1 or

2 stop bits

6. A simple 'driver' program will be made available to simplify programming of these units, if

desired.

7. RSSI read operations only function correctly if the unit is in RX mode (TXE pin is high or

floating)

Condensed specifications (All details are provisional)

Frequency

Any 2MHz segment in 140 - 175MHz

(TX and RX frequencies need not be the same)

+/-5ppm (better than 1.5kHz)

20kHz or 25kHz (12.5kHz by special order)

128 channels by serial RS232 interface or 16 by parallel select

Frequency stability

Channel spacing

Number of channels

Supply

Receive

3.1 -15V at 24mA

Transmit:

5.0V regulated

55mA (at 10mW output)

270mA (at 500mW output)

(plus 20mA at 3.6-15v from pin4: Vcc)

-20 to +70 C (Storage -30 to +70 C)

Compliant with ETSI EN 300 220-3 and EN 301 489-3

Operating temperature

Spurious radiations

Interface

User

11 pin 0.1" pitch molex

6 pin 0.1" pitch molex

5 pin 0.1" pitch socket in top of case

1.2mm (min.)

RF and TX supply

Reprogram

Recommended PCB hole size

Size

67 x 30 x 12mm

Transmitter

500mW (+27dBm); Adjustable via serial command 1 - 500mW in 1dB steps)

Output power

TX on switching time

Modulation type

TX modulation bandwidth

Deviation

Adjacent channel TX power

TX spurii

Inputs

<50 ms

FM, FSK (F1D, F3D)

DC – 3kHz

3kHz ( 1.5kHz for 12.5kHz channel variant)

-37dBm

<-40dBm

Data (CMOS/TTL compatible)

Receiver

Sensitivity

image / spurious

blocking

-118dBm for 12dB SINAD

-65dB

-86dB

adjacent channel

Outputs

-65dB (tested per ETSI EN300 086)

RSSI, Audio, Data

Dynamic timing

RX data recovery settling time 20ms

Power on to stable (50:50

mark / space) RXD

Maximum time between data

transitions

50ms (TXE low/active to stable RX data out)

250ms

Radiometrix Ltd

UHX1 Data Sheet (preliminary)

page 6

Radiometrix Ltd

Hartcran House

231 Kenton Lane

Harrow, Middlesex

HA3 8RP

ENGLAND

Tel: +44 (0) 20 8909 9595

Fax: +44 (0) 20 8909 2233

sales@radiometrix.com

www.radiometrix.com

This product data sheet is the original work and copyrighted property of Radiometrix Ltd. Reproduction in wholeor

in part must give clear acknowledgement to the copyright owner.

Limitation of liability

The information furnished by Radiometrix Ltd is believed to be accurate and reliable. Radiometrix Ltd reserves the

right to make changes or improvements in the design, specification or manufacture of its subassembly products

without notice. Radiometrix Ltd does not assume any liability arising from the application or use of any product or

circuit described herein, nor for any infringements of patents or other rights of third parties which may result from

the use of its products. This data sheet neither states nor implies warranty of any kind, including fitness for any

particular application. These radio devices may be subject to radio interference and may not function as intended if

interference is present. We do NOT recommend their use for life critical applications.

The Intrastat commodity code for all our modules is: 8542 6000.

R&TTE Directive

After 7 April 2001 the manufacturer can only place finished product on the market under the provisions of the

R&TTE Directive. Equipment within the scope of the R&TTE Directive may demonstrate compliance to the

essential requirements specified in Article 3 of the Directive, as appropriate to the particular equipment.

Further details are available on The Office of Communications (Ofcom) web site:

http://www.ofcom.org.uk/radiocomms/ifi/

Information Requests

European Radiocommunications Office (ERO)

Peblingehus

Ofcom

Riverside House

Nansensgade 19

2a Southwark Bridge Road

London SE1 9HA

DK 1366 Copenhagen

Tel. +45 33896300

Fax +45 33896330

ero@ero.dk

Tel: +44 (0)845 456 3000 or 020 7981 3040

Fax: +44 (0)20 7783 4033

information.requests@ofcom.org.uk

www.ero.dk

UHX1-144-5 [RADIOMETRIX]

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