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Chapter 4. Trunks and Lines
Section 300-Installation
4-10 DBS Manual - Revised April 2000 DBS-2.3/9.2-300
Installation
1. Install the G-TRK/8 or DID card in a trunk slot.
2. Connect the power supply by cabling the positive side to the SG
connector on CN2 (Figure 4-4).
Note:
Use cables that are 18 AWG or larger to connect the power supply
to the DBS.
Figure 4-4. -48Vpower supply installation
3. Ground the positive side of the -48V power supply to the building
ground.
Note:
Resistance to ground must be 10 Ohms or less, and the ground
cable must be 18 AWG or larger.
4. Install power-surge protectors between the wall outlet and the -48V
power supply.
5. Use a standard 50-pin cable to connect the trunks from the MDF to the
main trunk connector CN1.
6. Use a test set to verify the polarity of the trunk.
SG
RG
SYN
RG +24V Z0GND C Z2BM Z1 Z3 RE2Z4 RE1-48V
-48V Pow erSupply
R ecom m end:
Tellabs-8001
Tellabs-8002
CN2
CN11
CN12
CN5
CN13
CN3
CN14
CN15
CN1
CN1
CN2
CN4
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+