Comtech EF Data SDR-54A - Manual (Page 32)

SDR-54A Satellite Demodulator Revision 4
Operation MN/SDR54A.IOM
4.1.1 Indicators
There are three LED indicators for monitoring demodulator status and one LED indicator
for monitoring external features, see Table 4-1:
Table 4-1. Indicators
Monitoring Demodulator Features
Feature Color Description
POWER Green Indicates that power is applied to the unit.
FAULT Red Indicates that a demodulator fault condition exists.
CARRIER
DETECT
Green Indicates carrier presence.
Monitoring External Features
LNB POWER Green/Red Indicates LNB power enabled/LNB Fault.
Note: Due to the sensitivity of the SDR-54A tuner, a Carrier Detect indication may be
seen at some frequencies without the LNB attached.
4.1.2 LNB Power
LNB power is controlled by a pushbutton switch. An LED indicates when the LNB
power is enabled. The power (+24 VDC) is supplied along the center conductor of the IF
input coaxial cable.
• If the current drawn by the LNB is within the established limits, the LED will
illuminate GREEN.
• If the current drawn by the LNB is out of the established limits, the LED will
illuminate RED.
Refer to Chapter 8 for additional information.
4.2 Configuration Setup
The SDR-54A must be configured using a remote terminal. For information on remote
control operation, refer to Appendix A.
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