HP 8921A - Page 308

308
Chapter 10, Signaling Encoder (AF Generator 2)
AMPS-TACS NAMPS-NTACS Encoder
Message (FVC)
Figure 61 AMPS-TACS FVC Message Data Output Format
This description applies to the AMPS-TACS mode.
The 7 hexadecimal characters of the FVC
Message field represent the 2 type bits
and 26 information bits in the FVC message word.
The generation of dotting, word sync, parity, and the 11 repetitions of these
parameters in the FVC message stream is done automatically.
Operating Considerations
The entire field must contain data, no blank spaces are allowed. SAT is turned off
while the FVC message stream is being sent.
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