7310D Installation and User’s Guide
Installation
Foxcom Proprietary Information
25
Document No. 93-005-21-A1
3.6 Aligning the Fiberoptic Cable
The final step in installing the System 7310D is re-adjusting the Receiver Gain
Control for unity gain.
To set the unity gain
6
:
1. Connect combiner output to input of Spectrum Analyzer (S.A.).
2. Set Signal Generator 1 to -3 dBm on the S.A. at 1000 MHz.
3. Repeat for S.G.2 at 1010 MHz.
4. Set up the system as shown in Figure 12.
5. Set the Transmitter Gain Control for 3
rd
order intermodulation level of -40 dBc
at the Receiver output.
6. Adjust the Receiver Gain Control for unity gain.
Figure 12 - Fiberoptic Alignment Setup
6
If you are unable to perform this procedure refer to
Manual Gain Control
, page 37.
