Comtech EF Data SDR-54A - Manual (Page 68)

SDR-54A Satellite Demodulator Revision 4
Specifications MN/SDR54A.IOM
8.4 Signal Level Indication for Antenna Pointing
The receiver provides the AGC control signal as an output to aid the user in coarse
pointing the antenna towards the satellite. The AGC control signal is provided both as an
analog signal, and as a digital value through the M&C interface (per the M&C interface
specification). The analog signal is a buffered DC output, proportional to the receive
signal level, available on the front panel M&C connector at 10 mA maximum, 0 to 5V.
For fine antenna pointing, the estimated Eb/N0 value will be used. The Eb/N0 value is
available to the host computer or terminal via the M&C interface.
8.5 Unit-to-Unit Delay Variation
The demodulator will have a unit-to-unit delay variation for rate 1/2 only, as follows
without Reed-Solomon.
Symbol Rate Range Delay Variation
19.2k ≤ RS ≤ 800K
RS < 19.2K
1 µS
2 µS
8–8