Comtech EF Data SDM-9000 - Manual (Page 45)

SDM-9000 Satellite Modem Installation
Rev. 4 2–3
2.3 System Installation
Install the modem as follows:
1. Mount the modem chassis in the assigned position of the equipment rack. It is
recommended that the modem be supported by a rack-mounted shelf, or the two
rear rack-mount brackets supplied with the unit.
Note: For a custom rack installation, refer to the chassis dimensional drawing in
Figure 2-1.
2. Connect the cables to the proper locations on the rear panel. Refer to Section 2.4
for connector pinouts, placement, and functions.
3. Open the front panel and install the three main PCB assemblies (Figure 1-2) as
follows:
a. Install the modulator PCB (AS/3969) in the top slot.
b. Install the interface PCB (AS/3971, AS/4477, or AS/5618) in the middle
slot.
c. Install the demodulator PCB (AS/3970) in the bottom slot.
Note: The cards are keyed, and will only fit in the proper chassis slot. Verify
the PCBs are properly seated.
4. Before turning on the power switch, verify all interface jumper settings are in
their proper positions (Chapter 3), and become familiar with front panel
operation (Chapter 4).
5. Turn on the power switch (located inside the front panel).
6. Check for the proper TX output signal level and spectrum.
7. Check for the proper RX input signal level and spectrum.
8. If there is any installation problem, refer to Chapter 6 for troubleshooting
assistance.