CHANNEL INTERFACE MODULE (CIM)
8-5
5. Adjust R41 to be -6 dBm at J11, +6 dBm if
maximum level is sent by the ancillary equipment.
6. Select for normal operation (S5 all sections closed).
7. Reset the module, Press S2 and release.
Example: Microwave has +7 dBm max output.
Apply -5 dBm and set J11 for -6 dBm or apply +7
dBm, then set for +6 dBm.
Secondary Transmit
1. Determine the maximum level to be received by the
ancillary equipment to be transmitted.
2. Select Test 8 (S5, open section 4, close 1, 2 and 3).
3. Reset the module, Press S2 and release.
4. Adjust R90 for -12 dB from maximum level in Step
1 at TP9.
5. Select for normal operation (S5 all sections closed).
6. Reset the module, Press S2 and release.
Example: Microwave has -16 dBm maximum input,
set TP9 for -28 dBm.
Secondary Receive
1. Determine the maximum transmit level that is sent
by the ancillary equipment to the interface module.
2. Select Test 8 (S5, open section 4, close sections 1, 2
and 3).
3. Reset the module, Press S2 and release.
4. Insert an alignment tone -12 dB from the level
determined in Step 1 using a 600 ohm audio oscil-
lator into RXS
±
, breaking the connection to the
ancillary equipment. Otherwise, set the ancillary
equipment to send the alignment tone to the inter-
face module.
5. Adjust R102 to be -12 dBm at TP8, 0 dBm if
maximum level is sent by the ancillary equipment.
6. Select for normal operation (S5 all sections closed).
7. Reset the module, Press S2 and release.
Example: Microwave has +7 dBm max output.
Apply -5 dBm and set TP8 for -12 dBm or if
+7 dBm then set TP8 for 0 dBm.
Figure 8-2 CIM INPUT AND OUTPUT LEVELS
Содержание 3000 SERIES
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Страница 148: ...POWER TERMINATION MODULE PTM 16 2 Figure 16 1 POWER TERMINATION MODULE ALIGNMENT POINTS DIAGRAM ...
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