D1U54-D-2000-12-HB3C [MURATA]
民用设备,工业设备;
| 型号： | D1U54-D-2000-12-HB3C |
| 厂家： | 
muRata |
| 描述： | 民用设备,工业设备 |
| 文件： | 总8页 (文件大小：727K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
D1U54-D-2000-12-HBxC Series
54mm 1U Front End DC-DC Power Supply Converter
PRODUCT OVERVIEW
D1U54-D-2000-12-HBxC is a series of highly efficient Low Voltage DC (LVDC) input front end power supplies featuring a 12Vdc main
output, capable of active current sharing and a standby output. A multifunctional status LED, hardware logic signals and PMBus™
digital communications cold redundant capability are standard features. The low profile 1U, 46.9W/cubic inch package make this
series ideal for delivering reliable, efficient power to servers, workstations, storage systems and other 12V distributed power
architectures.
ORDERING GUIDE
Output power
Model Number
Main Output
12.0Vdc
Standby Output
5.0Vdc
Airflow
-48 to -60Vdc Nominal
D1U54-D-2000-12-HA3C
D1U54-D-2000-12-HA4C
D1U54-D-2000-12-HB3C
D1U54-D-2000-12-HB4C
D1U54-D-2000-12-HC3C
D1U54-D-2000-12-HC4C
FB
BF
FB
BF
FB
BF
2015W
2036W
2015W
12.0Vdc
3.3Vdc
FEATURES
2000W continuous 12Vdc main output power
INPUT CHARACTERISTICS
Parameter
Input Source Voltage DC Operating Range High Line
Turn-on Input Voltage
Turn-off Input Voltage
Maximum current
Cold Redundant power management features
Highly Efficient, >95% at 50% load
PMBusTM 1.2 Compliant I²C interface; LED status
indicator
-5°C to 55°C operating temperature range
without derating
12V main output, 120% surge current capability
3.3V, 5.0V & 12V Standby Output Options
1U height: 2.15" x 12.65" x 1.57"
> 46 Watts per cubic inch density
N+1 redundant, Hot Swap Capable
Active (digital) current sharing on 12V main
output; Integral ORing /isolation provided for
both outputs; compatible with DC input series
Internal cooling fan (variable speed)
Overvoltage, overcurrent, overtemperature
Protection
Conditions
Min.
-40.8 -48/-60
-39
-35.5
Nom.
Max.
Units
Vdc
-72
-40.5
-36.5
48
50
100
Ramp up
Ramp down
-48Vdc input; 2036W
-40
-36
Vdc
Adc
Apk
-40Vdc
-72Vdc
20% load
50% load
100% load
Cold start; between 0 to
200ms
DC Input Inrush Peak Current
93.3
95
93
-48Vdc input; fan power
excluded
Efficiency
%
Reversed input cables; no internal or external
fuse/breaker interruption
Reverse Polarity Protection
OUTPUT VOLTAGE CHARACTERISTICS
+40
Min.
+72
Vdc
Output
Parameter
Voltage
Conditions
Typ.
Max.
Units
Vdc
Output Setpoint Accuracy
Line and Load Regulation2
11.94 12.00
11.88 12.00
12.06
12.18
120
50% load; Tamb =25°C; Measured at PSU
side of connector
12V
Ripple Voltage & Noise1,2
Output Current
20MHz Bandwidth; Min Load Capacitance
2000W (-40 to-72Vdc) Continuous
mV p-p
Adc
167
Load Capacitance
30,000
12.06
12.30
120
μF
Output Setpoint
50% load; Tamb =25°C
Measured at PSU side of connector
20MHz Bandwidth; Min Load Capacitance
11.94 12.00
11.70 12.00
Vdc
Line and Load Regulation3
12VSB Ripple Voltage & Noise1,3
Output Current
mV p-p
Adc
0
3.0
Load Capacitance
1000
μF
Output Setpoint
50% load; Tamb =25°C
Measured at PSU side of connector
20MHz Bandwidth; Min Load Capacitance
3.30
3.14
Vdc
Line and Load Regulation3
3.3VSB Ripple Voltage & Noise1,3
Output Current
3.46
75
3.0
mV p-p
Adc
0
Load Capacitance
3000
μF
Output Setpoint
50% load; Tamb =25°C
Measured at PSU side of connector
20MHz Bandwidth; Min Load Capacitance
5.00
4.76
Vdc
Line and Load Regulation3
5.0VSB Ripple Voltage & Noise1,3
Output Current
5.24
75
3.0
mV p-p
Adc
0
Load Capacitance
3000
μF
1 Ripple and noise are measured with 0.1 μF of ceramic capacitance and 10 μF of tantalum capacitance on each of the power supply
outputs. A short coaxial cable to the scope termination is used and minimum output bus capacitance specified in above table.
2 Minimum load of 5A
3 Minimum load of 0.1A
CB Report and
Certificate
For full details go to
www.murata-ps.com/rohs
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D1U54-D-2000-12-HBxC.A01.D08 Page 1 of 8
D1U54-D-2000-12-HBxC Series
54mm 1U Front End DC-DC Power Supply Converter
OUTPUT CHARACTERISTICS
Parameter
Conditions
Min.
-5
Typ.
2
Max.
3
Units
s
Startup Time
DC ramp up; delay until Main output start
12V Main: 10% to 60% load step (50% max load change); 1A/μs slew rate; 2,000μF load
capacitance
Recovery Time to Within 1% (voltage prior to transient load step)
12VSB: 10% to 60% load step (50% max load change); 1A/μs slew rate; 500μF load
capacitance
+5
%
ms
%
Transient Load Response
-5
+5
Recovery Time to Within 1% (voltage prior to transient load step)
At 167A, two power modules sharing
All outputs remain in regulation
-48Vdc Input;12V Main, 100% load
-48Vdc Input;12VSB, 100% load
2
5
ms
%
Current sharing accuracy
Hot Swap Transients
-5
1
3
+5
ms
ms
Holdup Time
ENVIRONMENTAL CHARACTERISTICS
Parameter
Conditions
Min.
-40
-5
Typ.
Max.
Units
Storage Temperature Range
Operating Temperature Range (Sea Level)
70
100% max. load
+55
°C
NEBS; GR-63-CORE
Abnormal1 operating +55°C; adjusted for NEBS operating altitude (1800m)
-5
5
61
Operating; non-condensing
95
95
Humidity
%
m
Non-operating; non-condensing
Altitude Operating
3000
Non-operating; IEC600 68-2-27, test Ea. 30G, 11msec half-sine, 3 shocks per face,
6 faces.
Shock
30
G
Sine sweep; 5-150Hz
2
Operational Vibration
MTBF
Random vibration, 5-500Hz
1.11
Per Telcordia SR-332 Issue 3, M1C3 @ 40°C
729K
Hrs.
•
•
UL60950-1, 2nd Edition, 2014-10-14 (Information Technology Equipment – safety - Part 1: General Requirements).
CAN/CSA-C22.2 No. 60950-1-07, Amendment 1:2011, Amendment 2:2014 (MOD) - Information Technology Equipment – Safety – Part
1: General Requirements
Safety Approval Standards
•
•
•
CB: IEC 60950-1:2005, IEC 60950-1:2005/AMD1:2009, IEC60950-1:2005/AMD2:2013
IEC/EN 62368-1 (Planned)
GB4943.1-2011(CQC)
Input Fuse
Weight
Single 80A/75VDC fast acting fuse; located the input “-48VIN” connection.
1.11kg.
1Abnormal operation limited to 96hrs continuous and for not more than 15 days in any one year
AIRFLOW CHARACTERISTICS P-Q Curves
Front to Back models
Back to Front Models
q
Internal PSU fan speed 100% Duty Cycle
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D1U54-D-2000-12-HBxC.A01.D08 Page 2 of 8
D1U54-D-2000-12-HBxC Series
54mm 1U Front End DC-DC Power Supply Converter
PROTECTION CHARACTERISTICS
Output
Parameter
Voltage
Conditions
Min.
Typ.
65
Max.
Units
°C
Over temperature (intake)
Shutdown and auto-recovery, main output both BF & FB Airflows
Overvoltage
Main 12V
Main 12V Output; latching1 (12VSB maintains operation)
Five (5) “hiccup” auto recovery cycles, followed by a latched shutdown1
Latching1 (both outputs shutdown).
13.0
184
13.0
3.1
5.4
3.1
15.0
217
15.0
4.50
6.0
5.0
4.0
5.0
Vdc
Adc
Vdc
A
Vdc
A
Overcurrent
Overvoltage
Overcurrent
12VSB
Sustained “hiccup” auto recovery cycles until overcurrent is removed
Overvoltage
Overcurrent
Latching1 (both outputs shutdown).
5VSB
Sustained “hiccup” auto recovery cycles until overcurrent is removed
Latching1 (both outputs shutdown).
Sustained “hiccup” auto recovery cycles until overcurrent is removed
Overvoltage
Overcurrent
3.6
3.1
Vdc
A
3.3VSB
1 Latch-off condition requires elimination of fault condition then recycling of either the DC input source or PS_ON signal to restore operation.
ISOLATION CHARACTERISTICS
Parameter
Conditions
Min.
1500
1500
500
Typ.
Max.
Units
Vdc
Vdc
Vdc
Input to Output - Basic
Input to Chassis - Basic
Output to Chassis
Insulation Safety Rating / Test Voltage
Isolation
EMISSIONS AND IMMUNITY
Characteristic
Standard
Compliance
FCC 47 CFR
Part15/CISPR22/EN55032
Conducted Emissions
Class A with 6dB margin3
ESD Immunity
IEC/EN 61000-4-2
IEC/EN 61000-4-3
IEC/EN 61000-4-4
IEC/EN 61000-4-5
IEC/EN 61000-4-6
8KV Contact; 15KV air discharge; Criteria A
10V/m, 1KHz, 80% AM, 80MHz to 1GHz Criteria A
Level 2 (1kV) criteria A1
Radiated Field Immunity
Electrical Fast Transients/Burst
Surge Immunity
Level 2 500V DM 1kV CM, criteria A1
RF Conducted Immunity
Level 2, 3Vrms, 1KHz, 80% AM, 150kHz to 80MHz criteria A
NEBS GR-1089-CORE.i07
ATIS-600315.208
Meets the applicable transients of GR-1089-CORE.I07 for DC Input source.
Meets applicable transients of ATIS-600315.2018
Voltage Dips, Interruptions
1
Measured at power module DC input connector
Installed in End User system and contingent upon final system design
Radiated performance designed to meet Class A limits; however contingent on deployment; final qualification and certification testing to be performed by End User in system installation
2
3
STATUS INDICATORS AND CONTROL SIGNALS (BICOLOUR LED)
Condition
LED Status (Power)
Blinking green, 1Hz
Solid green
Standby - ON; Main output - OFF; DC PRESENT
Standby - ON; Main output – ON, No faults present
Fault Detected: Main output, VSB output, Fan, overtemperature, input overvoltage (Note: coincides with setting of PMBus
Status_Register bit flag(s))
Solid Amber
DC Input absent and/or no I2C slave address detected (See ADDR signal for configuration details); VSB OVP
Power Supply Warning Event
Cold Redundant mode – “COLD_STANDBY” /”FORCED STANDBY” MODE
OFF
Blinking Amber
Blinking green 2Hz
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D1U54-D-2000-12-HBxC.A01.D08 Page 3 of 8
D1U54-D-2000-12-HBxC Series
54mm 1U Front End DC-DC Power Supply Converter
STATUS AND CONTROL SIGNALS
Signal Name
I/O Description
Interface Details
Multi-function signal and is configured as one of the following:
DC_OK
Pulled up via 511R to internal 5V
bias supply and pulled down to DC
DC_OK (Default setting at initial power up):
Output is driven high when input source is available and within acceptable limits. The output is driven low to indicate loss of
input power.
Return via 10K OHM resistor.
RAPID_ON:
Pulled 511R to 5V internal bias
RAPID_ON is a two state analog signal forms the cold redundant bus with up to four (4) load connected PSUs. This signal is
used exclusively by the PSU for cold redundant mode operation, and is configured via PMBusTM; see ACAN-80 and 89 for details supply of the ACTIVE & MASTER
+ wiring diagram.
PSU; Pull-Down = 10K.
Bus voltage reduces with the QTY
of bus connected power supplies
DC_OK (Default)/
RAPID_ON
Output
Rapid_ON signal/bus provides these three functions:
Pull-up bus voltage: Bus pull-up is provided by the single PSU or the first PSU assigned the roll of “ACTIVE & MASTER” aka
“COLD_REDUNDANT ACTIVE”. More than one PSU can be assigned as “ACTIVE” only the first PSU assigned this roll provides
the pull-up path and is why this PSU is referred to as the “Master”.
Each bus connected PSU drives the Rapid_ON bus low when any fault is detected.
Each bus connected PSU powers on its main output rapidly within 100µS after detection of LOW state.
Note: “Rapid_ON” pin configuration is retained once setup via PMBusTM, even if Input power is recycled and remains the new
default setting until commanded to INPUT_OK via PMBusTM
.
PW_OK
(Output OK)
Output The signal is asserted, driven high, by the power supply to indicate that the main output is valid. If the main output fails, the
Pulled up internally via 10K to VDD.
PW_OK signal will de-assert and is driven low. The PW_OK output is driven low to indicate that the Main output is outside of A logic high >2.0Vdc
lower limit of regulation
A logic low <0.8Vdc
Driven low by internal CMOS buffer
(open drain output).
SMB_ALERT
(FAULT/WARNING)
Output The signal output is driven low to indicate that the power supply has detected a warning/fault, and any status register bits
flagged (except Status_CML). It is intended to alert the system accordingly.
Pulled up internally via 10K to VDD.
A logic high >2.0Vdc
This output shall be driven high when the power is operating correctly (within specified limits).
The signal will revert to a high level when the warning/fault stimulus (that originally caused the alert) is removed.
The LED indicator(s) mirrors this alert pin.
A logic low <0.8Vdc
Driven low by internal CMOS buffer
(open drain output).
PRESENT_L
(Power Supply
Absent)
Output The signal is used to detect the presence (installed) of a PSU by the host system. The signal is connected to PSU logic SGND
within the power module.
Passive connection to
+VSB_Return.
A logic low <0.8Vdc
PS_ON
Input This signal is pulled up internally to the internal housekeeping supply (within the power supply). The power supply main 12VDC Pulled up internally via 10K to VDD.
output will be enabled when this signal is pulled low to +VSB_Return. A logic high >2.0Vdc
In the low state the signal input shall not source more than 1mA of current. The 12VDC output will be disabled when the input A logic low <0.8Vdc
is driven higher than 2.4V, or open circuited. Cycling this signal shall clear latched fault conditions. (Power Supply
Enable/Disable “Mate Last, Break First” (MLBF) Signal
Input is via CMOS Schmitt trigger
buffer.
ADDR/
PS_INHIBIT
Input A multifunction signal used to detect presence in the system and to set the slave device address.
When this pin is left open all power module operation will be inhibited and a default slave address will be assigned (0x80h) to
allow communication with slave devices.
Analogue (DC) voltage level
between the limits of 0Vdc and
+3.3Vdc.
When the power module is inserted into a system this pin will be pulled (via a suitable external select resistor to +VSB_Return,
and in conjunction with an internal resistor divider chain, shall configure the required slave (EEPROM and microprocessor)
address used for digital communications. Back to LED Status Table; See ADDR selection table below
SCL (Serial Clock) Both A serial communications line compatible with PMBusTM Power Systems Management Protocol Part 1 – General Requirements Pulled up via 5.11K to internal
Rev 1.2.
3.3VDC
No additional internal capacitance is added that would affect the speed of the bus.
The signal is provided with a series isolator device to disconnect the internal power supply bus in the event that the power
module is unpowered.
VIL is 0.8V maximum
VOL is 0.4V maximum
VIH is 2.1V minimum
Compensation for up to 0.12Vdc
total connection drop (output and
return connections).
SDA (Serial Data)
V1_SENSE &
V1SENSE_RTN
Input Remote sense connections intended to be connected at and sense the voltage at the point of load.
The voltage sense will interact with the internal module regulation loop to compensate for voltage drops due to connection
resistance between the output connector and the load.
If remote sense compensation is not required then the voltage can be configured for local sense by:
1.
2.
V1_SENSE directly connected to power blades 4 to 6 (inclusive)
V1_SENSE_RTN directly connected to power blades 1 to 3 (inclusive)
ISHARE
Both The current sharing signal is connected between sharing units (forming an ISHARE bus). It is an input and/or an output (bi-
Analogue voltage:
directional analog bus) as the voltage on the line controls the current share between sharing units. A power supply will respond +8V maximum;
to a change in this voltage but a power supply can also change the voltage depending on the load drawn from it. On a single 13.1K to
unit the voltage on the pin (and the common ISHARE bus would read 8VDC at 100% load (module capability). For two identical Main 12V_RTN
units sharing the same 100% load this would read 4VDC for perfect current sharing (i.e. 50% module load capability per unit).
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D1U54-D-2000-12-HBxC.A01.D08 Page 4 of 8
D1U54-D-2000-12-HBxC Series
54mm 1U Front End DC-DC Power Supply Converter
ADDR SELECTION TABLE
ADDR pin (D4) resistor
Power Supply Main Controller
Power Supply External EEPROM
to GND (K-ohm)*
(Serial Communications Slave Address)
(Serial Communications Slave Address)
0.82
2.7
5.6
8.2
15
27
56
180
0xB0
0xB2
0xB4
0xB6
0xB8
0xBA
0xBC
0xBE
0x80
0xA0
0xA2
0xA4
0xA6
0xA8
0xAA
0xAC
0xAE
0xA0
OPEN/PS_INHIBIT
* The resistor shall be no more than +/-5% tolerance
TIMING SPECIFICATIONS
Turn-On Delay & Output Rise Time:
Time
Min
Max
Comments
from 10% to 90% Nominal
output VDC
Vsb Rise time
1ms
20ms
from 10% to 90% Nominal
output VDC; Minimum rise time
is only observed with no system
load and no additional output
capacitance
V1 Rise time
2ms
15ms
Vsb Power-on-delay
V1 Power-on-delay
V1 PS_ON delay
V1 PWOK delay
DC_OK (Input source)
detect
2700ms
3000ms
150ms
150ms
100ms
50ms
400ms
1300ms
Turn-Off (Shutdown by PS_ON)
Turn-Off Timing
V1 Fall time
Min
-
Max
-
Notes
Must be monotonic
V1 PS_OFF delay
PW_OK delay off
0ms
0.2ms
5ms
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D1U54-D-2000-12-HBxC.A01.D08 Page 5 of 8
D1U54-D-2000-12-HBxC Series
54mm 1U Front End DC-DC Power Supply Converter
TIMING SPECIFICAITONS
Power Removal Holdup:
Power Removal Timing
Vsb holdup
V1 holdup
Min
3ms
1ms
Typ.
Max Notes
35ms
-
full Load
full load
DC_OK
100µS
750µs
Input fail detect
PWOK delay off
PWOK Hold Up
-
0.8ms
5.5ms
750µs
CONNECTOR, DC INPUT
Part Number
Description
Outline
•
•
Manufacturer: Amphenol
Manufacturers Type: Amphenol, RADSOK®
Receptacle
•
•
•
Manufacturers Part Number:
C10-752109-000
Material: Housing LCP Black; Pin Copper,
Silver Plated; Clip Beryllium Copper
Electrical: Rated 250VDC; Max Continuous
Load Current 69ADC
Power Module two position PCB
mounted Receptacle Connector
•
•
•
Manufacturer: Amphenol
Manufacturers Type: Amphenol, RADSOK®
Plug
•
•
•
Manufacturers Part Number:
C10-752158-000; BLACK, 3,6MM - AWG 6
Material: Housing PBT Black; Contact
Copper, Silver Plated; Positioner PBT Black
Electrical: Rated 250VDC; Max Continuous
Load Compatible with Receptacle
Mating two position Plug Connector with
Crimp Terminals
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D1U54-D-2000-12-HBxC.A01.D08 Page 6 of 8
D1U54-D-2000-12-HBxC Series
54mm 1U Front End DC-DC Power Supply Converter
DC OUTPUT & SIGNAL INTERFACE MATING CONNECTOR
Part Number Description
•
•
Manufacturer: Amphenol
FCI
Manufacturers Type:
Power Blade RA STB
PLUG
•
Manufacturers Part
Number: 10106264-
6003003LF
(PSU Side connector
10106262-6003006LF)
DC OUTPUT & SIGNAL INTERFACE PIN MAPPING
Pin
Signal Name
V1_OUT
V1_RTN
SDA
Comments
Pin
B2
C2
D2
Signal Name
Comments
P4, P5, P6
P1, P2, P3
A3
+ 12V Output;
V1_SENSE
+ Remote Sense
+ 12V main and VStby Output return
Short Pin; I2C data signal line
PW_OK
Power OK
Dual function I2C address selection and
PS_INHIBIT
ADDR/PS_INHIBIT
B3
C3
D3
A2
SCL
PS_ON
SMB_ALERT
V1_SENSE_R
Short Pin; I2C clock signal line
Short Pin; Remote on/off (short pin)
Short Pin; I2C alert signal
A1
B1
C1
D1
PRESENT_L
VSTANDBY
DCOK / RAPID_ON
ISHARE
PS_Present
+ Standby output
Selectable via PMBus
Current share bus
- Remote Sense return
WIRING DIAGRAM
CURRENT SHARING NOTES
1.
2.
3.
Main Output current sharing is achieved using the active
current share method.
Current sharing can be achieved with or without the remote
(V_SENSE) connected to the common load.
+VSB Outputs can be tied together for redundancy but total
combined output power must not exceed the rated standby
power of a single unit. The +VSB output has an internal ORING
MOSFET for additional redundancy/internal short protection.
Main output power of units sharing must not exceed the rated
power of a single unit during power up.
The current sharing pin D1 is connected between sharing units
(forming an ISHARE bus). It is an input and/or an output (bi-
directional analog bus) as the voltage on the line controls the
current share between sharing units. A power supply will
respond to a change in this voltage but a power supply can
also change the voltage depending on the load drawn from it.
On a single unit the voltage on the pin (and the common
ISHARE bus would read approximately 8VDC at 100% load
(power module capability). For two units sharing the same load
this would read approximately 4VDC for perfect current sharing
(i.e. 50% power capability per unit).
4.
5.
6.
The load for both the main 12V and the VSB outputs at initial
startup shall not be allowed to exceed the capability of a single
unit. The load can be increased after a delay of 3 sec
(minimum), to allow all sharing units to achieve steady state
regulation
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D1U54-D-2000-12-HBxC.A01.D08 Page 7 of 8
D1U54-D-2000-12-HBxC Series
54mm 1U Front End DC-DC Power Supply Converter
MECHANICAL OUTLINE
Airflow Direction:
Hx3C models
Hx4C models
1.
This drawing is a graphical representation of the product and may not show all fine details such as plastic molded part finish details, screw head patterns (may vary). Please contact
Murata for 3D model for details
2.
3.
4.
Dimensions in mm
Subject to change. Contact factory for latest version.
File Reference: D1U54-D-2000-12-HC (M1984) Drawing for Product Datasheet_20180301
OPTIONAL ACCESSORIES
Description
Part Number
Connector Card
D1U54P-12-CONC2K
APPLICATION NOTES
Document Number
ACAN-82
ACAN-89
ACAN-80
Description
Link (to be activated)
D1U54P-12-CONC2K, Output Connector Card
D1U54-D-2000-12-HBxC PMBusTM Protocol
Cold Redundancy; RAPID_ON
https://power.murata.com/datasheet?/data/apnotes/acan-82.pdf
https://power.murata.com/datasheet?/data/apnotes/acan-89.pdf
https://power.murata.com/datasheet?/data/apnotes/acan-80.pdf
This product is subject to the following operating requirements and the Life and Safety Critical Application
Sales Policy. Refer to: https://www.murata-ps.com/requirements/
Murata Power Solutions, Inc.
129 Flanders Rd. Westborough,
Ma 01581, USA.
Murata Power Solutions, Inc. (“Murata”) makes no representation that the use of its products in the circuits described herein, or the use of other technical information
contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell
equipment constructed in accordance therewith. Buyer represents and agrees that ithas all the necessary expertise to create and implement safeguards that anticipate
dangerous consequences of failures, monitor failures and their consequences, lessen the likelihood of failures that might cause harm, and take appropriate remedial actions.
Buyer will fully indemnify Murata, its affiliated companies, and its representatives against any damages arising out of the use of any Murata products in safety-critical
applications. Specifications are subject to changewithout notice.
ISO 9001 and 14001 REGISTERED
©
2019 Murata Power Solutions, Inc.
www.murata-ps.com/support
D1U54-D-2000-12-HBxC.A01.D08 Page 8 of 8
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