HP 8921A - NAMPS-NTACS FVC Message Data Output Format

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Chapter 10, Signaling Encoder (AF Generator 2)
AMPS-TACS NAMPS-NTACS Encoder
Message (FVC)
Figure 62 NAMPS-NTACS FVC Message Data output Format
This description applies to the NAMP-NTAC mode.
The 7 hexadecimal characters (28 bits) of this FVC message are combined with 12
parity bits calculated by the encoder to output a 40-character data stream. This
information is output when the
Message/DST field is set to Message, and Send
is selected.
Operating Considerations
The entire field must contain data, no blank spaces are allowed. DSAT is turned
off while the FVC Message Stream is being sent.
0ARITY
BITS
-ESSAGE)NFO
BITS
BITS BITS BITS BIT S
$3!4 $3!4 $3!4 $3!4
3YNCWORD
BITS
-ESSAGE $3!4
&6#
$ATA$IRECTION
3END

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