Advantech SSPBMg-C200-BRE User manual

INSTALLATION AND OPERATING MANUAL
200W C-Band Hub-mount
SOLID STATE POWER BLOCK UP-CONVERTER (SSPB)
SSPBMg–C200–BRE
PM GR0-3161A0-3N0R, Rev. 5

SSPBMg-C200-BRE
WARRANTY
This Advantech Wireless product is warranted against defects in material and workmanship for a
period of 2 years from date of shipment. During the warranty period, Advantech Wireless will, at
its option, either repair or replace products that will prove to be defective.
To return a product for warranty or repair service, you must first request a Return Material
Authorization (RMA) number by contacting Advantech Wireless at:
Phone: [phone] or Fax: [phone]
Website: www.advantechwireless.com or e-mail: [e-mail]
The unit should be shipped to the following address, in original shipping container (box), with
shipping charges prepaid.
Advantech Wireless
657 Orly Avenue
Dorval, Quebec
H9P 1G1
CANADA
Please indicate the RMA number on all shipping documentation.
Units shipped without prior issued RMA, or shipped not in original packing, may be subject of
rejection and returned at sender’s own expense.
LIMITATIONS OF WARRANTY
Advantech Wireless warrants this product to be free of materials and workmanship defects.
The foregoing warranty shall not apply to defects resulting from improper handling or abuse by
the Buyer, unauthorized modification, operation outside of the environmental specifications for
the product, or improper installation or maintenance.
Advantech Wireless shall not be liable for any direct, indirect, special, incidental or
consequential damages.
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SSPBMg-C200-BRE
CONTENTS
1. SAFETY..............................................................................................................................6
2. GENERAL INFORMATION...........................................................................................8
2.1 INTRODUCTION ...........................................................................................................8
2.2 DESCRIPTION................................................................................................................8
2.2.1 Power Supply...............................................................................................................8
2.2.2 Up-Converter Assembly ..............................................................................................9
2.2.3 10 MHz Reference Oscillator ......................................................................................9
2.2.4 HPA Assembly...........................................................................................................10
2.2.5 Controller Board ........................................................................................................10
2.3 SSPB SPECIFICATIONS .............................................................................................13
3. UNPACKING AND INSTALLATION..........................................................................17
3.1 INITIAL INSPECTION.................................................................................................17
3.2 UNPACKING................................................................................................................17
3.3 INSTALLATION ..........................................................................................................17
3.3.1 Mechanical Installation..............................................................................................17
3.3.2 Electrical Connections...............................................................................................18
3.3.3 RF Connections..........................................................................................................18
3.3.4 Cooling Considerations..............................................................................................19
4. INTERFACES..................................................................................................................20
4.1 SYSTEM CONTROL CONNECTOR (RS-485 RS-232) .............................................20
4.2 REDUNDANT INTERFACE........................................................................................21
4.3 LED................................................................................................................................21
4.4 RF OUTPUT MONITOR INTERFACE.......................................................................21
5. PRE POWER AND CHECKOUT .................................................................................22
5.1 PRE-POWER PROCEDURES......................................................................................22
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SSPBMg-C200-BRE
6. MAINTENANCE.............................................................................................................23
6.1 PREVENTIVE MAINTENANCE.................................................................................23
6.1.1 Mechanical Preventive Maintenance.........................................................................23
6.1.2 Checking the Cooling Fans........................................................................................23
7. RS-232 SERIAL COMMUNICATION .........................................................................24
7.1 HAND-HELD TERMINAL ..........................................................................................24
7.2 RS-232 PC TERMINAL................................................................................................26
8. RS-485 SERIAL COMMUNICATION .........................................................................34
9. PACKING LIST...............................................................................................................35
10. SAFETY AND EMC COMPLIANCE...........................................................................36
11. APPENDIX A: RS-485 SERIAL COMMUNICATION PROTOCOL.......................37
11.1 INTRODUCTION .........................................................................................................37
11.2 FRAME STRUCTURE .................................................................................................37
11.3 COMMANDS................................................................................................................38
11.4 RESPONSES TO COMMANDS FROM SLAVE TO MASTER.................................40
11.4.1 Condition Status Response ....................................................................................40
11.4.2 Read Identification Response ................................................................................40
11.4.3 Read GAIN/ATTENUATION Range Response...................................................41
11.4.4 Read Unit Status Response....................................................................................41
12. APPENDIX B: RS-485 SKYWAN SERIAL COMMUNICATION PROTOCOL....42
12.1 HARDWARE CONSIDERATIONS.............................................................................42
12.2 RS-485 INTERFACE ON 4 WIRES.............................................................................42
12.3 TRANSMISSION PROTOCOL....................................................................................42
12.3.1 Transmission Interface...........................................................................................43
12.3.2 Command Message Structure (IDU to SSPB).......................................................44
12.3.3 Response Message Structure (SSPB to IDU) ........................................................45
12.3.4 Data Field Definitions............................................................................................45
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SSPBMg-C200-BRE
FIGURES
FIGURE 1: PRODUCT OUTLINE ...................................................................................................... 11
FIGURE 2: BLOCK DIAGRAM......................................................................................................... 12
FIGURE 3: CONNECTORS ............................................................................................................... 15
FIGURE 4: HAND-HELD TERMINAL HELP MENU.......................................................................... 24
FIGURE 5: HAND-HELD TERMINAL STATUS MENU..................................................................... 25
FIGURE 6: HYPERTERMINAL RS-232 COMMUNICATION – HELP COMMAND AND RESPONSE......... 27
FIGURE 7: HYPERTERMINAL RS-232 COMMUNICATION – STATUS COMMAND AND RESPONSE..... 28
FIGURE 8: HYPERTERMINAL RS-232 COMMUNICATION – HELP RF, RF AND RF OFF COMMANDS
AND RESPONSES ..................................................................................................................... 29
FIGURE 9: HYPERTERMINAL RS-232 COMMUNICATION – HELP ATT, ATT, GAIN AND ATT <VALUE>
COMMANDS AND RESPONSES.................................................................................................. 30
FIGURE 10: HYPERTERMINAL RS-232 COMMUNICATION – HELP GAIN, GAIN, ATT AND GAIN
<VALUE> COMMANDS AND RESPONSES.................................................................................. 31
FIGURE 11: HYPERTERMINAL RS-232 COMMUNICATION – “HELP BAUD” AND “BAUD RS232”
COMMANDS AND RESPONSES.................................................................................................. 32
FIGURE 12: HYPERTERMINAL RS-232 COMMUNICATION – “HELP RS485”, “RS485 ASCII” AND
“RS485 BINARY” COMMANDS AND RESPONSES ...................................................................... 33
FIGURE 13: GRAPHICAL USER INTERFACE (GUI) – RS-485 COMMUNICATION BASED ON RS-485
PROTOCOL ............................................................................................................................. 34
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SSPBMg-C200-BRE
TABLES
TABLE 1: ELECTRICAL SPECIFICATIONS........................................................................... 13
TABLE 2: MECHANICAL SPECIFICATIONS ........................................................................ 14
TABLE 3: POWER REQUIREMENTS...................................................................................... 14
TABLE 4: ENVIRONMENTAL CONDITIONS........................................................................ 14
TABLE 5: CONNECTORS......................................................................................................... 16
TABLE 6: AC LINE (J5) – PIN ASSIGNMENTS...................................................................... 16
TABLE 7: SYSTEM CONTROL (RS232 RS485) – PIN ASSIGNMENTS .............................. 20
TABLE 8: SERIAL INTERFACE RS-232 CONNECTION INFORMATION.......................... 26
TABLE 9: PACKING LIST (P/N 19R-3171A0-3NXC)............................................................. 35
TABLE 10: COMMANDS .......................................................................................................... 38
TABLE 11: CONDITION STATUS RESPONSE ...................................................................... 40
TABLE 12: READ IDENTIFICATION RESPONSE................................................................. 40
TABLE 13: READ GAIN/ATTENUATION RANGE RESPONSE........................................... 41
TABLE 14: READ UNIT STATUS RESPONSE ....................................................................... 41
TABLE 15: COMMAND MESSAGE STRUCTURE ................................................................ 44
TABLE 16: RESPONSE MESSAGE STRUCTURE.................................................................. 45
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SSPBMg-C200-BRE
1. SAFETY
In addition to this section, included by reference are the following pertinent sections of the
International Standard IEC-215, ‘Safety requirements for radio transmitting equipment’:
Appendix D, ‘GUIDANCE ON ASSESSING THE COMPETENCE OF PERSONNEL FOR
DESIGNATION AS SKILLED’ and also Sub-clause 3.1 of the Standard.
Appendix E, ‘GUIDANCE ON SAFETY PRECAUTIONS TO BE OBSERVED BY
PERSONNEL WORKING ON RADIO TRANSMITTING EQUIPMENT’, also Sub-clauses 3.2,
3.7 and 22.1 of the Standard.
To prevent the risk of personal injury or loss related to equipment malfunction Advantech
Wireless uses the following symbols for safety related information. For your own safety, please
read the information carefully BEFORE operating the equipment.
Symbols used in this manual:
WARNING! Indicates a hazardous procedure that may result in serious injury or death, if
not performed properly.
CAUTION! Indicates a dangerous procedure that may result in light-to-severe injury or loss
related to equipment malfunction, if proper precautions are not taken.
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SSPBMg-C200-BRE
-------------------------------------------- WARNING ---------------------------------------------
The operator cannot repair this unit. DO NOT attempt to remove the top cover or
disassemble the internal components. Only qualified service technicians should service this unit.
There is a risk of damaging the precision components.
----------------------------------------------- WARNING ------------------------------------------
ALWAYS TERMINATE THE OUTPUT WAVEGUIDE OF THE UNIT WITH AN RF LOAD
CAPABLE OF DISSIPATING FULL CW RF POWER. SIMILARLY TERMINATE THE RF
INPUT PORT TO AVOID THE POSSIBILITY OF THE UNIT BEING DRIVEN BY STRAY
LEAKAGE SIGNALS. Incorporate the terminations prior to applying prime power to the unit.
This procedure prevents self-oscillation and irradiation from and into the local environment. If
an RF source is not connected to the RF input port, the unit may go into a self-induced mode and
generate high levels of RF energy. Destruction caused by an excessive load voltage standing
wave ratio (VSWR) will void the warranty.
----------------------------------------------- WARNING -------------------------------------------
DO NOT LOOK INTO THE RF OUTPUT PORT OF THE POWERED BLOCK
UP-CONVERTER! Handle the powered SSPB with extreme care. Keep in mind that the levels
of microwave radiation, which do not induce immediate physical discomfort in most individuals,
can be sufficiently high to induce long term effects. The eyes are the most vulnerable parts of
the body.
The maximum permissible levels of exposure are quite low in comparison to the power levels
produced by the equipment built by Advantech Wireless (e.g. less than 10 mW versus 4 to 700
W delivered by the different units). The maximum permissible levels are currently being studied
by a number of organizations. In the past the U.S. Safety Code established a dosage rate of 10
mW/cm2. Currently, there is consideration being given to reducing the permissible level to
1 mW/cm2in the United States, as has been the case for several European countries.
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SSPBMg-C200-BRE
2. GENERALINFORMATION
2.1 INTRODUCTION
This manual contains information that describes the installation, operation and maintenance
procedures for the 200-Watt C-Band hub-mount (outdoor) Solid State Power Block Up-
Converter model SSPBMg-C200-BRE. Because specialized training is required for some phases
of installation and operation, certain parts of this manual are directed only to properly trained
personnel. Warnings appear at the appropriate points to caution all users of the potential RF
hazards.
For a safe and versatile operation, please read the information carefully BEFORE using the
equipment.
Advantech Wireless has prepared this manual for use as a guide for the proper installation,
operation and maintenance of Advantech Wireless equipment and computer programs. The
drawings, specifications and information contained herein are the property of Advantech
Wireless. Unauthorized use or disclosure of these drawings, specifications and information is
strictly prohibited. They shall not be reproduced, copied or used in whole or in part as the basis
for manufacturing or sale of the equipment or software programs without the prior written
consent of Advantech Wireless.
2.2 DESCRIPTION
The SSPBMg-C200-BRE is a 200-Watt C-Band hub-mount (outdoors) Solid State Power Block
Up-Converter (SSPB). The entire SSPB is self-contained and is intended for mounting on to the
antenna hub, see Figure 1: Product Outline at page 11. It incorporates an Interface Assembly, Up-
Converter Assembly, High Power Amplifier (HPA) Assembly, Power Supply Assembly and a Main
Controller Board. The block diagram of the SSPB is shown in Figure 2: Block Diagram (page 12)
and the various connectors are shown in Figure 3: Connectors (page 15).
2.2.1 POWER SUPPLY
There are two power supply assemblies in this SSPB. The first power supply provides +12 V DC
high current and – 9 V DC low current for the SSPB and +12 V DC for the fans. The second
power supply provides +48 V DC for the final GaN devices in the High Power Amlifier
Assembly. The unit is configured for operation from 90 - 264 V AC, single phase, 47-63 Hz.
It has a Power Factor Correction (PFC) of 95%, minimum.
The overall power consumption is 750 W (@ PLIN RF Output Power) and 900 W (@ PSAT RF
Output Power), typical.
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SSPBMg-C200-BRE
2.2.2 UP-CONVERTER ASSEMBLY
The L-Band signal arriving from a modem enters the Up-Converter Assembly through a ‘N-type’
connector, see Figure 3: Connectors (page 15). The L-Band signal (950 MHz to
1525 MHz) enters the high gain Low Noise Amplifier (LNA) and Medium Power Amplifier
(MPA) stages that boost the RF power level sufficient for the transmission through the Up-
Converter Assembly.
Integral to the UP-Converter Assembly is a variable attenuation section that maintains the overall
gain of this module constant against changes in temperature (global temperature compensation).
A temperature dependent DC voltage is sent from a temperature sensor from within the HPA
Assembly through the power conditioner board to the attenuator. The amount of attenuation is
varied with the change in the DC voltage.
The Up-Converter Assembly converts and amplifies the incoming L-Band carrier signal into a C-
Band carrier. To achieve this requirement, this assembly contains a synthesizer, a mixer, a
multiplier, two LNAs and a band-pass filter, see Figure 2: Block Diagram (page 12). For this
application, the Up-Converter requires the L-Band signal, which is sent to the mixer and the
internal 10 MHz reference provided by the 10 MHz oscillator, which is fed into the synthesizer.
The synthesizer contains a phase-locked loop local oscillator (PLL LO), which is normally
phase-locked with the incoming 10 MHz internal reference signal. When functioning correctly,
the PLLLO generates a 4.900 GHz LO signal. The 4.900 GHz LO signal and the L-Band signal
are fed into a mixer to produce the required C-Band signal. The frequency-range provided by the
Up-Converter Assembly is from 5.850 GHz to 6.425 GHz.
The synthesizer also contains an out of lock protection circuitry that prevents frequency shifts
from occurring to the resulting C-Band signal. When the oscillator is not phase-locked, a signal
is sent to the power conditioner board within the HPA Assembly to shutdown the RF devices.
The band-pass filter removes the unwanted harmonic frequencies, allowing the C-Band signal to
pass through the HPA Assembly.
2.2.3 10 MHZ REFERENCE OSCILLATOR
This module is used to generate a highly stable and very low phase noise 10 MHz reference
frequency with a high stability (of ±5 x 10-8 MHz/year typical), which is required by the
converter module.
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SSPBMg-C200-BRE
2.2.4 HPA ASSEMBLY
The HPA Assembly amplifies the RF signal from the Up-Converter Assembly to a power level
sufficient for transmission. Integral to this module are three HPA stages and a power conditioner
board. Other functionality includes internal power conditioning and overtemperature shutdown.
2.2.5 CONTROLLER BOARD
All of the controls, input/output communication and the decision-making, with the exception of
the critical module-level decision are performed by the micro-controller within the Up-
Converter. The Controller Board provides through the System Control interface:
• Fault detection and indication
• Forward RF power monitoring and indication (optional)
• Temperature monitoring and indication
• ON/OFF transmit switching
• Change in the unit’s address
An ALARM will be triggered when the internal temperature of the SSPB exceeds 70°C. The
SSPB will continue to operate in this condition.
A FAULT signal will be sent to the user if any one of the following occurs:
• Phase-locked loop oscillator within the synthesizer is out of lock.
• The baseplate temperature exceeds 85 °C
• Any of the RF devices fails
In case of over-temperature (>85 °C), the SSPB will automatically restart when its internal
temperature decreases to 60 °C.
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SSPBMg-C200-BRE
Figure 1: Product Outline
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SSPBMg-C200-BRE
UP-CONVERTER HIGH POWER AMPLIFIER
PLL
LO
10 MHz
J7
C-Band
W/G
OUTPUT
L-BAND
POWER CONDITIONER
high current
GND
W/G
TRANSITION
J5
110/220
V AC
BPF
0.950 - 1.525 GHz 5.850 - 6.425 GHz
4.900 GHz
TEMPERATURE
COMPENSATION
MPA
LPA
LNA
VVA
POWER
SUPPLY
GATT
PA
GAIN
CTRL.
VVA
BPF
MPA HPA
+45 V
-9 V
+45 V
+ 5 V
+ 5 V
oC
COOLING
FANS
+12 V
(VAR)
GND
RS485 TX+
RS485 TX-
+5 V
RS485 RX+
RS485 RX-
A B C D E
RS232 TXD
RS232 RXD
COM
F G H J K
RS 485 RS 232
M & C UP-CONVERTER
LINE
NEUTRAL
A
B C
GND
RS485
RS485
RS232
RS232
-9 V
+12 V
GND
LEDs
LEDS
GAIN
CTRL. GATT
I2C (temp info)
MUTE
MUTE
FAULT
FAULT
SHUT-DOWN_MON
SD_MON
FPWR
FWPWR
FWPWR
-9 V
-9 V
LEDS
PA
PA
PA
J4
RF MON
oC
N/C
+12 V
(VAR)
10 MHz
REF
REF
10 MHz
REFERENCE
+12V
GND
REDUND
REDUNDANCY
CIRCULATOR
TERM
TERM
+12 V
+12 V
J1
L-BAND INPUT
(950-1525 MHz) W/G
- 40 dB
Figure 2: Block Diagram
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SSPBMg-C200-BRE
2.3 SSPB SPECIFICATIONS
TABLE 1: ELECTRICAL SPECIFICATIONS
L-Band Input Frequency 950 – 1525 MHz
RF Output Frequency Range 5.850 – 6.425 GHz
Frequency Stability Based upon 10 MHz Internal Reference
RF Saturated Output Power (PSAT) + 53 dBm, typical (200 W)
Linear Output Power (PLIN)* + 50.0 dBm, min
Linear Gain 75 dB, typical
Gain Flatness: over 575 MHz
over 40 MHz 3.0 dB, p-p, max
1.0 dB, max
Gain Variation Over Temperature 3 dB, p-p, over the entire bandwidth
L-Band Input Impedance 50 Ω
L-Band Input VSWR 1.29:1, max
C-Band Output VSWR 1.3:1, max
Noise Power Density - 75 dBm/Hz, max (in transmit band)
- 155 dBm/Hz, max (in receive band)
Spurious at rated P1dB
(in-band and out of band) - 55 dBc, max
Third Order Intermodulation
(two equal tones 5 MHz apart) - 25 dBc, max @ 50.0 dBm total output power, referenced to total output power
Local Oscillator Frequency 4.900 GHz
Local Oscillator Leakage - 20 dBm, max
Integrated Phase Noise @ PLIN 2 °/RMS
Output Phase Noise
@ Offset 100 Hz
1 kHz
10 kHz
. ≥100 kHz
C-Band Single Side Band Phase Noise (max)
- 63 dBc/Hz
- 73 dBc/Hz
- 83 dBc/Hz
- 93 dBc/Hz
*NOTE: To establish PLIN measure third order intermodulation with two equal tones 5 MHz
apart to be – 25 dBc, related to total output power and record the total output power for this value
of IMD3.
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SSPBMg-C200-BRE
TABLE 2: MECHANICAL SPECIFICATIONS
Physical Dimensions See Figure 1: Product Outline (page 11) – white paint
Approximate Weight 24.25 lbs (11 kg)
Mounting holes (4) 1/4-20, 0.40” (6 places) and #10-32 0.250” (6.35 mm) deep (4 places
both sides), see Figure 1: Product Outline (page 11)
TABLE 3: POWER REQUIREMENTS
Power Requirements 90 to 264 V AC (110 / 220 V AC autoranging)
Power Consumption 3.4 A typical @ 220 V AC (750 W) @ PLIN;
4.1 A @ 220 V AC (900 W) @ PSAT
TABLE 4: ENVIRONMENTAL CONDITIONS
Temperature:
Non-operating (continuous exposure)
Operating (ambient)
- 50°C to + 85°C
- 30°C to + 55°C (with start-up at - 30°C)
Relative Humidity: Up to 100% relative humidity, condensing
Altitude: 10,000 feet AMSL, derated 2 °C/1,000 feet from
AMSL
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SSPBMg-C200-BRE
Figure 3: Connectors
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SSPBMg-C200-BRE
TABLE 5: CONNECTORS
Connector Function Description Mating Connector
(J1) L-Band IN
(Up-converter Input) N-Type (F) N-Type (M)
(J2) M&C Serial Interfaces
RS-485 & RS-232 MS 3112E12-10P (M) MS 3116G12-10S (F)
(J3)
(not available for
these units) Relay Interface MS3112E10-6P (M) MS3116F10-6S (F)
(J5) AC LINE AC Supply
(100 to 264 V AC) MS3102R-10SL-3P (M) MS3106F-10SL-3S (F)
(J6)
REDUNDANCY
Redundancy Interface MS 3112E12-10P (M) MS 3116G12-10S (F)
(J4) RF MON RF Monitor SMA-Type (F) SMA-Type (M)
(J7) OUT Waveguide Output CPR – 137 (grooved) CPR – 137 (flat)
TABLE 6: AC LINE (J5) – PIN ASSIGNMENTS
Pin Description
A PHASE (LIVE)
B GROUND
C NEUTRAL
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SSPBMg-C200-BRE
3. UNPACKINGAND INSTALLATION
This Section contains instructions for the site preparation, unpacking and the installation of an
SSPB.
3.1 INITIAL INSPECTION
Inspect the shipping container for damage. If the container or cushioning material is damaged,
immediately contact the carrier that delivered the equipment and submit a damage report.
Failure to do so could invalidate all future claims.
3.2 UNPACKING
Carefully unpack and remove all of the items from the shipping container (inspect the interior of
the container for damage). Save all of the packing material until completing a visual inspection.
Verify that all of the items listed on the packing list are present. Inspect all of the items for
evidence of damage, which might have occurred during the shipment. If damage seems evident,
immediately contact the carrier that delivered the equipment and file a claim. Failure to do so
could invalidate future claims. Check the unit thoroughly for damaged or loose parts. After
completing a visual inspection, proceed to the next step.
3.3 INSTALLATION
Installation of the SSPB includes the following four phases:
• Mechanical installation
• Electrical installation
• RF connections
• Cooling considerations
3.3.1 MECHANICAL INSTALLATION
The SSPB is designed for hub-mount (outdoors) applications.
Figure 1: Product Outline at page 11 shows the overall mechanical dimensions of this SSPB.
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SSPBMg-C200-BRE
3.3.2 ELECTRICAL CONNECTIONS
E Electrical connections to the SSPB consist of the prime power AC LINE applied to the AC
Line Connector (J5). For the connector location, see Figure 3: Connectors at page 15.
Perform the electrical connections as follows:
• Using the connector provided in the shipping kit (item 5, TABLE 9at page 35), construct an
AC Supply cable with a pin assignment as shown in TABLE 6 at page 16.
• Verify that the AC power source is turned OFF.
• Connect the SSPB to the AC power source. For the correct input voltage level refer to
TABLE 3 at page 14.
• Turn the AC power source ON.
3.3.3 RF CONNECTIONS
The following three RF connections are provided by the SSPB:
• RF input (J1) – N-Type Female, see Figure 3: Connectors at page 15. The user needs a
N-Type male connector for the interface connection.
CAUTION! Beware of the destructive pin depth of the mating connector. When installing an
RF mating connector with a destructive pin depth into an RF component connector, damage may
occur to the RF component connector. A destructive pin depth is a connector having a pin length
that is too long in respect to the reference plane of the connector. The centre pins of the
connectors used by Advantech Wireless have a precision tolerance measured in mils (1/1000
inch). The mating connectors of the various suppliers may not be of precision types.
Consequently, the centre pins of these devices may not have the proper depth.
• RF output (J7) - CPR-137 waveguide flange (grooved), see Figure 3: Connectors at page 15.
The user needs a CPR-137 flat waveguide flange.
• Attach the correct RF cable with mating connector to their corresponding connector ports on
the SSPB.
• Wrap mastic tape (item 8 of TABLE 9at page 35) around all of the SSPB connectors in
order to prevent water/humidity ingress, which may result in damage.
• Squeeze the tape tightly, ensuring that both ends of the tape have formed around the
connector and the cable.
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SSPBMg-C200-BRE
3.3.4 COOLING CONSIDERATIONS
The SSPB is forced-air cooled. The cooling fans are configured for 12 V DC operation, supplied
by the main power supply of the unit. Depending on environmental conditions, the airflow
opening may become obstructed by debris, reducing the efficiency of the cooling system.
NOTE: The cooling fans rotation speed is temperature dependent.
Inspect the unit periodically to ensure that the grill of the fans intake and all openings on the unit
are free of any obstructions. Insufficient air-cooling will significantly impact upon the SSPB
longevity.
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