Comba Telecom CriticalPoint UHF DAS User manual

DISTRIBUTED
ANTENNA SYSTEM
USER MANUAL
Public Safety UHF DAS System
QE: 1-0-0
Comba Telecom Network Systems Limited
CriticalPoint UHF Public Safety
DAS

The information contained herein is the responsibility of and is approved by the following, to
whom all enquiries should be directed:
This is an unpublished work the copyright in which vests in Comba Telecom Network Systems
Limited ("Comba"). All rights reserved.
The information contained herein is confidential and the property of Comba and is supplied
without liability for errors or omissions. No part may be reproduced, disclosed or used except
as authorized by contract or other written permission. The copyright and the foregoing
restriction on reproduction and use extend to all media in which the information may be
embodied.

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0.1 CONTENTS
Section
Page
0.1 CONTENTS........................................................................................................................................ 3
0.2 INDEX TO FIGURES AND TABLES............................................................................................... 5
0.3 HISTORY ........................................................................................................................................... 6
0.4 GLOSSARY OF TERMS ................................................................................................................... 7
0.5 SAFETY NOTICES AND ADMONISHMENTS .............................................................................. 8
1GENERAL INFORMATION ........................................................................................................... 10
2EQUIPMENT DESCRIPTION......................................................................................................... 12
2.1 SYSTEM DIAGRAM....................................................................................................................... 12
2.3 EQUIPMENT CONSTITUTION ..................................................................................................... 13
2.4 EQUIPMENT CONNECTORS........................................................................................................ 13
2.4.1 UHF PS DAS CONNECTORS......................................................................................................... 13
2.5 TYPICLA APPLICATION............................................................................................................... 16
2.5.1 APPLICATION 1: ONE MU CONNECTS 32 RUS. ...................................................................... 16
2.5.2 APPLICATION 2: 2 MU (MAIN MU AND BACKUP MU) CONNECT 32 RUS......................... 17
2.5.3 APPLICATION 3: 2MU (MAIN MU AND BACKUP MU) CONNECT 16RUS WITH OPTICAL
FIBER BACKUP.............................................................................................................................. 17
2.6 SPECIFICATION OF UHF DAS SYSTEM..................................................................................... 18
3INSTALLATION.............................................................................................................................. 20
3.1 WARNINGS AND ALERTS............................................................................................................ 20
3.2 SITE PLANNING CONSIDERATIONS ......................................................................................... 21
3.2.1 SITE PLANNING............................................................................................................................. 21
3.2.2 INSTALLATION CHECKLIST....................................................................................................... 22
3.3 INSTALLATION PROCEDURES................................................................................................... 23
3.3.1 GOODS INWARDS INSPECTION ................................................................................................. 23
3.3.2 TOOLS.............................................................................................................................................. 23
3.3.3 PREPARATION ............................................................................................................................... 23
3.3.4 WALL MOUNTING FOR MU AND RU ........................................................................................ 23
3.3.5 DRIP-LOOP...................................................................................................................................... 24
3.3.6 CABINET MOUNTING FOR EU.................................................................................................... 24
3.3.7 WALL MOUNTING FOR EU ......................................................................................................... 26
3.3.8 GROUNDING .................................................................................................................................. 29
3.3.9 DC POWER CONNECTION FOR MU AND RU ........................................................................... 29
3.3.10 DC POWER AND MONITOR CABLE CONNECTION BETWEEN MU AND EU..................... 30
3.3.11 DC POWER AND MONITOR CABLE CONNECTION BETWEEN EU AND EU ...................... 31
3.3.12 RF CABLE CONNECTION............................................................................................................. 31
3.3.13 WEB ACCESS.................................................................................................................................. 31
3.3.14 DRY CONTACT CABLE ................................................................................................................ 31
4WEB GUI.......................................................................................................................................... 34
4.1 WEB GUI CONNECTION............................................................................................................... 34
4.2 WEB GUI INTRODUCTION........................................................................................................... 35
5COMMISSIONING.......................................................................................................................... 37
5.1 PRE-COMMISSIONING TASKS.................................................................................................... 37
5.2 COMMISSIONING PROCEDURE ................................................................................................. 37

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6MAINTENANCE ............................................................................................................................. 38
7APPENDICES .................................................................................................................................. 39
7.1 APPENDIX A: TOOLS.................................................................................................................... 39
7.2 APPENDIX B: DECLARATION OF HARMFUL SUBSTANCES AND CONTENT................... 40
7.3 APPENDIX D: RMA (RETURN MATERIAL AUTHORIZATION) ............................................. 41

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0.2 INDEX TO FIGURES AND TABLES
Figure 1: Master Unit (MU) .............................................................................................................................................10
Figure 2: Expansion Unit (EU).........................................................................................................................................11
Figure 3: Remote Unit (RU).............................................................................................................................................11
Figure 4: UHF PS DAS Functional Block Diagram..........................................................................................................12
Figure 5: MU Equipment Connectors................................................................................................................................13
Figure 6: EU Equipment Connectors.................................................................................................................................14
Figure 7: RU Equipment Connectors.................................................................................................................................15
Figure 8: Application 1 System Diagram ..........................................................................................................................16
Figure 9: Application 2 System Diagram ..........................................................................................................................17
Figure 10: Application 3 System Diagram ........................................................................................................................17
Figure 11: Mounting Rack Overview................................................................................................................................23
Figure 12: UHF PS DAS (MU and RU) Wall Mounting...................................................................................................24
Figure 13: Dimension of Expansion Unit for Cabinet Mounting ......................................................................................25
Figure 14: Expansion Unit Cabinet Mounting...................................................................................................................26
Figure 15: Expansion Unit Wall Mounting .......................................................................................................................26
Figure 16: The mounting hangers of Expansion Unit........................................................................................................27
Figure 17: Hole punching diagram for Wall-mounted installation....................................................................................27
Figure 18: Expansion Unit Wall Mounting .......................................................................................................................28
Figure 19: DC power connection for MU and RU ............................................................................................................29
Figure 20: DC power and Monitor cable connection.........................................................................................................30
Figure 21: DC power and Monitor cable connection for EU.............................................................................................31
Figure 22: Input IP Address...............................................................................................................................................34
Figure 23: Input User Name and Password .......................................................................................................................34
Figure 24: Web GUI Main Screen.....................................................................................................................................35
Figure 25: Dashboard Screen.............................................................................................................................................35
Figure 26: Chanel Frequency Info.....................................................................................................................................36
Figure 27: Sub Band Info ..................................................................................................................................................36
Table 1: MU Equipment Connectors.................................................................................................................................13
Table 2: EU Equipment Connectors..................................................................................................................................14
Table 3: RU Equipment Connectors..................................................................................................................................15
Table 4: Pin Definition of Dry Contact Cable ...................................................................................................................31
Table 5: Commissioning Task Explanation.......................................................................................................................37

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0.3 HISTORY
Change No.
ENU
Details Of Change
1
1-0-0
This manual first created and issued in Dec. 2021.

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0.4 GLOSSARY OF TERMS
Abbreviation
Definition
ALC
Automatic Level Control
ATT
Attenuator
BTS
Base Transceiver Station
CH
Channel
CSA
Cross Sectional Area
dB
Decibel
dBm
Decibels relative to 1 milliwatt
DL
Downlink
DT
Donor Terminal
DPX
Duplexer
FOU
Fiber Optical Unit
FS
Frequency Selection
Hz
Hertz
ID
Identification
IF
Intermediate Frequency
LNA
Low Noise Amplifier
LOS
Line-of-Sight
MCU
Main Control Unit
MHz
Megahertz
MT
Mobile Terminal
MTBF
Mean Time Between Failures
MU
Master Unit
NF
Noise Figure
OMC
Operation & Maintenance Center
OMT
Operation & Maintenance Terminal
OP
Optical Fiber
PA
Power Amplifier
PLL
Phase Locked Loop
PSU
Power Supply Unit
RF
Radio Frequency
RFU
Radio Frequency Unit
RU
Remote Unit
SMA
Sub-Miniature A Connector
TX/RX
Transmit/Receive
UL
Uplink
VAC
Volts Alternating Current
VDC
Volts Direct Current
VSWR
Voltage Standing Wave Ratio

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0.5 SAFETY NOTICES AND ADMONISHMENTS
This document contains safety notices in accordance with appropriate standards. In the interests of conformity with the
territory standards for the country concerned, the equivalent territorial admonishments are also shown.
Any installation, adjustment, maintenance and repair of the equipment must only be carried out by trained, authorized
personnel. At all times, personnel must comply with any safety notices and instructions.
Specific hazards are indicated by symbol labels on or near the affected parts of the equipment. The labels conform to
international standards, are triangular, and are colored black on a yellow background. An informative text label may
accompany the symbol label.
Hazard labeling is supplemented by safety notices in the appropriate equipment manual. These notices contain additional
information on the nature of the hazard and may also specify precautions.
Note: The grantee is not responsible for any changes or modifications not expressly approved by the party responsible for
compliance. Such modifications could void the user’s authority to operate the equipment.
For compliance with the general population RF exposure limits, each individual antenna used for this transmitter must be
installed to provide a separation distance greater than 116.00cm or more from all persons during normal operation and
must not be co-located with any other antenna for meeting RF exposure requirements.
Warning Notices:
These draw the attention of personnel to hazards that may cause death or injury to the operator or others. Examples of use
are cases of high voltage, laser emission, toxic substances, point of high temperature, etc.
The design of the antenna installation needs to be implemented in such a way so as to ensure RF radiation safety levels
and non-environmental pollution during operation.
Note: Antennas, feeders and couplers are not included in the packing list; solution provider should consider these
accessories according to site conditions.
MU and RU FCC Warning Notices:
WARNING. This is NOT a CONSUMER device. It is designed for installation by FCC LICENSEES and
QUALIFIED INSTALLERS. You MUST have an FCC LICENSE or express consent of an FCC Licensee to
operate this device. You MUST register Class B signal boosters (as defined in 47 CFR 90.219) online at
www.fcc.gov/signal-boosters/registration. Unauthorized use may result in significant forfeiture penalties, including
penalties in excess of $100,000 for each continuing violation.
EU Warning Notices:
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2)this device must accept any interference received, including interference that may cause undesired operation.
Note: The grantee is not responsible for any changes or modifications not expressly approved by the party responsible for
compliance. Such modifications could void the user’s authority to operate the equipment.
Alert:
These draw the attention of personnel to hazards that may cause damage to the equipment. An example of use is the case
of static electricity hazard.
Caution notices may also be used in the handbook to draw attention to matters that do not constitute a risk of causing

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damage to the equipment but where there is a possibility of seriously impairing its performance, e.g. by mishandling or
gross maladjustment. Warnings and Cautions within the main text do not incorporate labels and may be in shortened form.
Disconnection of the RU RF connectors may cause damage to the equipment when power is on.
The application antenna and RF cable are not provided. The antenna gain should not exceed 0 dBi.
WARNING!
Use only authorized and approved antennas, cables and/or coupling devices! The use of unapproved antennas, cables or
coupling devices could cause damage and may be of violation of FCC regulations. The use of unapproved antennas,
cables and/or coupling devices is illegal under FCC regulations and may subject the user to fines.
Information of Class A or B device as below:
PUBLIC SAFETY UHF DAS MASTER UNIT (MU):
CLASS A:
AC: RX45V2F-A-AC
DC: RX45V2F-A-48
CLASS B:
AC: RX45V2F-B-AC
DC: RX45V2F-B-48
PUBLIC SAFETY UHF DAS REMOTE UNIT (RU):
CLASS A:
AC: RH45V2F-A-AC
DC: RH45V2F-A-48
CLASS B:
AC: RH45V2F-B-AC
DC: RH45V2F-B-48
End of Section

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1GENERAL INFORMATION
The Public Safety UHF Distributed Antenna System (hereinafter called “UHF PS DAS”) consists of the Master Unit
(MU), the Expansion Unit (EU) and Remote Unit (RU). The MU includes the MU Chassis, Power Supply Unit (PSU),
and RF module. The Expansion Unit includes the optical modules. The Fiber Optical module is a modular design, and can
support up to 4 or 8 independent Remote Units. The Remote Unit is designed with a compact form for easy installation.
The low signal transmission loss of optical fiber is applicable for long distance transmission. UHF PS DAS can support
optical transmission with up to 6.5dBo of optical loss, equivalent to 8 miles of fiber length.
Main Features
⚫Supports P25 P1/P2, digital and conventional analog communications simultaneously
⚫Simplex and internal Duplexing supported
⚫Up to 32 narrow band filters (Class A)
⚫Up to 4 wide band filters (Class B)
⚫Supports up to 32 Remote Units when cascading Expansion Unit
⚫Supports MU/EU/Fiber Redundancy
⚫Channelized and per time slot Auto Level Control (ALC) supported (Class A)
⚫Channelized uplink squelch supported (Class A)
⚫Built-in mandatory isolation test to prevent oscillation
⚫Auto shutdown with alarm upon oscillation detection
⚫Web based GUI for intelligent configuration, SNMP supported
⚫NFPA 1221 / IFC compliant dry contact alarms
⚫UL50E Type 4 / NEMA 4 enclosure on MU/RU/EU
⚫
The following figure shows the enclosure of the UHF PS DAS Master Unit(MU), Expansion Unit(EU) and Remote
Unit(RU).
Figure 1: Master Unit (MU)

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Figure 2: Expansion Unit (EU)
Figure 3: Remote Unit (RU)
End of Section

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2EQUIPMENT DESCRIPTION
2.1 SYSTEM DIAGRAM
Remark: Battery Backup Unit shown as above figure is only used as a reserved port
Figure 4: UHF PS DAS Functional Block Diagram
In the downlink path, the BTS signals are received by the donor antenna that is connected to the Master Unit. After the
duplexer, the signals are sent to the LNA module for pre-amplification and to the digital RF integrated module for digital
filtering and frequency conversion. Then the DL signals will be filtered via the duplexer, and then sent to the Expansion
Unit(s), the RF signal is converted into an optical signal and then distributed to the Remote Unit(s) to over optical fiber.
After amplification by the RU, the signals are transmitted at the MT port to the service antenna infrastructure.
In the uplink path, the mobile signals are received by the service antenna. After passing through the MT port duplexer,
the signals are sent to the LNA and the integrated module for digital filtering, then the UL signals will be sent to the
Expansion Unit(s), the RF signal is converted into an optical signal and then distributed to the Master Unit for filtering by
the duplexer and power amplification. Finally, the uplink signals are sent to the donor antenna for transmission back to
the BTS.

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2.3 EQUIPMENT CONSTITUTION
The typical UHF PS DAS unit consists of the following components:
Power Amplifier (PA): It provides power amplification for both the UL and DL branches.
Main Control Unit (MCU): The MCU is used to monitor and control the operation of the repeater. It also provides the
communication interface for remote control and status indication. LED indicators provide the operational status of the
MCU.
Duplexer: The DPX is located near the MT and DT terminals and permits the uplink and downlink signals to share a
common antenna.
Digital Integrated Module and Power Amplifier: Consists of the Power Conversion module, RF module, digital process
module and monitoring modules. The Power Conversion module converts +28V DC voltage into +9VJK and +9VRF.
+9VJK, +9VRF are supplied to the monitoring unit, and the RF unit in the integrated module separately. The RF module
amplifies and converts the RF signal to IF signal. The Digital process module converts the IF signal into baseband signal
via AD conversion and extraction, and filtering. After that, the IF signal will be amplified and converted to an RF signal
by the RF module for RF filtering and amplification. The Monitoring module monitors and controls the system parameters
and is the interface for both remote monitoring and local commissioning.
Power Supply Unit (PSU): The PSU converts the input voltage into a stable DC supply to provide power for the internal
functional modules.
Optical module: Completes optical signal and RF signal conversion.
2.4 EQUIPMENT CONNECTORS
2.4.1 UHF PS DAS CONNECTORS
The PS DAS is designed for all cable entries to be routed from the right or left of the enclosure, as shown in the
following figure.
Figure 5: MU Equipment Connectors
Table 1: MU Equipment Connectors

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Identifier
Descriptions
Power1
Power cable connector for a pre-installed power cord for connection to DC
(e.g. DC -48V, Max, current is 8A).
ALM1/ALM2
Connector for Dry contact or External alarm
AUX
Used for Equipment extension wiring routing
LAN
RJ45 Connector for remote connection
OMT
RJ45 Connector for local WEB GUI connection.
PWR/RUN/FUNC/OP
LED indictor
PWR: ON: Power supply is normal; OFF: Power supply is abnormal.
RUN: Regular Flashing: MU is working fine; OFF or Always ON: MU is not working
properly
FUNC: Reserved
OP: ON: Expansion connected; OFF: no Expansion connected
DT/DL IN
N-Female connector for connection to the donor antenna.
MT/DL OUT
N-Female connector for connection to the service antenna.
UL IN
Input port for Uplink Signal
UL OUT
Output port for Uplink Signal
IN1
SMA-Female connector to UL port of Expansion Unit
OUT1
SMA-Female connector to DL port of Expansion Unit
IN2-4/OUT2-4
SMA-Female, Reserved
Ground terminal
Figure 6: EU Equipment Connectors
Table 2: EU Equipment Connectors
1
The voltage identification is a variant due to electricity system diversity of global regions. The power cable connector
might be identified for AC 110V, AC 220V, AC 110V/220V, or DC -48V respectively. Please refer to specific product or
contact local sales if any doubt.

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Identifier
Descriptions
OP1/OP2
Optical ports
UL1
Connect IN1 of MU (Master Unit)
DL1
Connect OUT1 of MU (Master Unit)
UL2
Connect IN1 of MU (Slave Unit), this port is only used when the backup function is
used
DL2
Connect OUT1 of MU (Slave Unit), this port is only used when the backup function is
used
UL_E
Connect to UL1 of next EU for cascade connection
DL_E
Connect to DL1 of next EU for cascade connection
Ground terminal
Figure 7: RU Equipment Connectors
Table 3: RU Equipment Connectors
Identifier
Descriptions
Power1
Power cable connector for a pre-installed power cord for connection to DC
(e.g. DC -48V, Max, current is 8A).
ALM1/ALM2
Connector for Dry contact or External alarm
AUX
Used for Equipment extension wiring routing
1
The voltage identification is a variant due to electricity system diversity of global regions. The power cable connector
might be identified for AC 110V, AC 220V, AC 110V/220V, or DC -48V respectively. Please refer to specific product or
contact local sales if any doubt.

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OMT
RJ45 Connector for local WEB GUI connection.
OP
Optical port, connect to Expansion Unit
PWR/RUN/FUNC/OP
LED indictor
PWR: ON: Power supply is normal; OFF: Power supply is abnormal.
RUN: Regular Flashing: RU is working fine; OFF or Always ON: RU is not working
properly
FUNC: Reserved
OP: ON: Optical link is fine; OFF: Optical link is broken, optical TX or RX alarm
MT/DL OUT
N-Female connector for connection to the service antenna.
UL IN
Input port for Uplink Signal
IN1-4/OUT1-4
Reserved
Ground terminal
2.5 TYPICLA APPLICATION
2.5.1 APPLICATION 1: ONE MU CONNECTS 32 RUS.
OP1 OP2 OP3 OP4
OP5 OP6 OP7 OP8
DL1 UL1 DL2 UL2
DL_E UL_E
OP1 OP2 OP3 OP4
OP5 OP6 OP7 OP8
DL1 UL1 DL2 UL2
DL_E UL_E
OP1 OP2 OP3 OP4
OP5 OP6 OP7 OP8
DL1 UL1 DL2 UL2
DL_E UL_E
OP1 OP2 OP3 OP4
OP5 OP6 OP7 OP8
DL1 UL1 DL2 UL2
DL_E UL_E
RU1
EU
MU
RU32
RF Cable
Fiber
EU1
EU2
EU3
EU4
Figure 8: Application 1 System Diagram

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2.5.2 APPLICATION 2: 2 MU (MAIN MU AND BACKUP MU) CONNECT 32 RUS.
OP1 OP2 OP3 OP4
OP5 OP6 OP7 OP8
DL1 UL1 DL2 UL2
DL_E UL_E
OP1 OP2 OP3 OP4
OP5 OP6 OP7 OP8
DL1 UL1 DL2 UL2
DL_E UL_E
OP1 OP2 OP3 OP4
OP5 OP6 OP7 OP8
DL1 UL1 DL2 UL2
DL_E UL_E
OP1 OP2 OP3 OP4
OP5 OP6 OP7 OP8
DL1 UL1 DL2 UL2
DL_E UL_E
RU1
EU
Main MU
RU32
RF Cable
Fiber
EU1
EU2
EU3
EU4
Backup MU
Figure 9: Application 2 System Diagram
2.5.3 APPLICATION 3: 2MU (MAIN MU AND BACKUP MU) CONNECT 16RUS WITH
OPTICAL FIBER BACKUP.
OP1 OP2 OP3 OP4
OP5 OP6 OP7 OP8
DL1 UL1 DL2 UL2
DL_E UL_E
OP1 OP2 OP3 OP4
OP5 OP6 OP7 OP8
DL1 UL1 DL2 UL2
DL_E UL_E
OP1 OP2 OP3 OP4
OP5 OP6 OP7 OP8
DL1 UL1 DL2 UL2
DL_E UL_E
OP1 OP2 OP3 OP4
OP5 OP6 OP7 OP8
DL1 UL1 DL2 UL2
DL_E UL_E
RU1
EU
Main MU
RU16
RF Cable
Fiber
EU1
EU2
EU3
EU4
Backup MU
Backup Fiber
Backup Fiber
Figure 10: Application 3 System Diagram

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2.6 SPECIFICATION OF UHF DAS SYSTEM
EU
Frequency Band
Uplink
MHz
450-512MHz
Downlink
450-512MHz
Optical Wavelength
Uplink
nm
1310
Downlink
1550
Optical Connector Type
SC-APC
Optical Fiber type
Single Mode, WDM (single strand of fiber per Remote Units)
VSWR
≤ 1.5
Number of Remote Units supported per unit
4 or 8
Electrical - System
Frequency Range
MHz
450 - 512
Total Output Power, Uplink (MU Only)
dBm
27 (Typical TX/RX duplexed), 30 (TX/RX separate)
Total Output Power, Downlink (MU and RU)
dBm
33 (Typical TX/RX duplexed), 36 (TX/RX separate)
RF Passbands (RF windows)
Up to 3
*See Note below
Maximum System Gain-Uplink without filters
dB
102
Maximum System Gain-Downlink without filters
dB
105
Gain Adjustment Range (1dB step)
dB
MU: 0-30, RU: 0-30
Pass Band Ripple, p-p
dB
3
Uplink Noise Figure
dB
7
Intermodulation
dBm
-13
Spurious
dBm
FCC Compliance
Maximum RF Input Level without Damage
dBm
0
Maximum RF Input Level without Overdrive
-10
Input VSWR
1.5
Impedance

50
*Note:
A set of contiguous downlink/uplink channel pairs count as one passband (one window)
Consult with a Comba technical representative for passband and window configurations before ordering
Digital Filters - Class A
Number of Filters
32
Filter Bandwidth /
Out-of-Band Suppression /
System Group Delay
Bandwidth: 6.25KHz
≥ 60dBc @ filter center + 60KHz, 67us
Bandwidth: 12.5KHz
≥ 60dBc @ filter center + 65KHz, 38us
Bandwidth: 25KHz
≥ 50dBc @ filter center + 75KHz, 29us
Bandwidth: 75KHz
≥ 60dBc @ filter center + 200KHz, 17us
Digital Filters - Class B
Number of Filters
4
Filter Bandwidth
200KHz –5MHz
System Group Delay
sec
8.5
Out-of-Band Suppression
≥ 45dBc @ filter edge + 0.6MHz
≥ 60dBc @ filter edge + 1MHz

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Mechanical - MU
Dimensions, H x W x D
in(mm)
37.4x15.4x12.4 (950×390×315)
Weight (without bracket)
lb(kg)
77 (35) without filter, 140 (63.5) with filter
Power Supply
VDC
-40 to -58
VAC
100-240/47-63Hz
Power Consumption
W
85
RF Connectors
N-Female
Operating Temperature
oF(oC)
-27 to +140 (-33 to +60)
Operating Humidity
95%
Environmental Class
UL50E Type 4 / NEMA 4
Note: Typical specifications at room temperature
Mechanical - RU
Dimensions, H x W x D
in(mm)
37.4x15.4x12.4 (950×390×315)
Weight (without bracket)
lb(kg)
77 (35) without filter, 140 (63.5) with filter
Power Supply
VDC
-40 to -58
VAC
100-240/47-63Hz
Power Consumption
W
85
RF Connectors
N-Female
Operating Temperature
oF(oC)
-27 to +140 (-33 to +60)
Operating Humidity
95%
Environmental Class
UL50E Type 4 / NEMA 4
Note: Typical specifications at room temperature
Mechanical - EU
Dimensions, H x W x D
in(mm)
18.5 x 15.8 x 3.4 (470 x 400 x 87)
Weight (without bracket)
4 Port
lb(kg)
25.4 (11.5)
8 Port
lb(kg)
27.6 (12.5)
Power Consumption (approx.)
4 Port
W
15
8 Port
W
20
Power Supply
VDC
+28 (From Master Unit)
Enclosure Cooling
Convection
Operating Temperature
oF (oC)
-40 to +131 (-40 to +55)
Operating Humidity
95%
Enclosure Class
UL50E Type 4 / NEMA 4
Note: Typical specifications at room temperature

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3INSTALLATION
3.1 WARNINGS AND ALERTS
Radio Frequency Energy
There may be situations, particularly for workplace environments near high-powered RF sources, where recommended
limits for safe exposure of human beings to RF energy could be exceeded. In such cases, restrictive measures or actions
may be necessary to ensure the safe use of RF energy.
High Voltage
The equipment has been designed and constructed to prevent danger, as far as reasonably practicable. Any work activity
on or near equipment involving installation, operation or maintenance must be, as far as reasonable, free from danger.
Where there is a risk of damage to electrical systems involving adverse weather, extreme temperatures, wet, corrosive or
dirty conditions, flammable or explosive atmospheres, the system must be suitably installed to prevent danger.
Protective Earthing
Equipment provided for the purpose of protecting individuals from electrical risk must be suitable for the purpose and
properly maintained and used.
Handling Precautions
This covers a range of activities including lifting, lowering, pushing, pulling, carrying, moving, holding or restraining an
object, animal or person from the equipment. It also covers activities that require the use of force or effort, such as pulling
a lever, or operating power tools.
Where some of the abovementioned activities are required, the equipment must be handled with care to avoid being
damaged.
Electrostatic Discharge (ESD)
Observe standard precautions for handling ESD-sensitive devices. Assume that all solid-state electronic devices are ESD-
sensitive. Ensure the use of a grounded wrist strap or equivalent while working with ESD-sensitive devices. Transport,
store, and handle ESD-sensitive devices in static-safe environments.