System Installation - Comtech EF Data SDM-9000 Installation And Operation Manual

SDM-9000 Satellite Modem

2.3 System Installation

Install the modem as follows:
1. Mount the modem chassis in the assigned position of the equipment rack. It is
2. Connect the cables to the proper locations on the rear panel. Refer to Section 2.4
3. Open the front panel and install the three main PCB assemblies (Figure 1-2) as
4. Before turning on the power switch, verify all interface jumper settings are in
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
Rev. 4
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.
for connector pinouts, placement, and functions.
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.
their proper positions (Chapter 3), and become familiar with front panel
operation (Chapter 4).
assistance.
Installation
2–3