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Chapter 8 263
Signaling Encoder and Decoder - Screens and Control Fields
Control Fields for the Signaling Encoder and Decoder
DSAT
The signaling encoder’s DSAT: field is displayed only when the Mode
field is set to NAMP-NTAC and the Channel field is set to Voice.
This field is used to set one of the 7 valid DSAT sequences to be used on
the designated voice channel.
DSAT is output continuously when Send DSAT is selected, and is only
stopped when Stop DSAT is selected. If message or DST information is
sent using Send, the DSAT signal is temporarily interrupted until that
information has been sent.
Screens Where Field is Present
SIGNALING ENCODER (Modes: NAMP-NTAC)
DSAT/DST (hex)
The DSAT/DST (hex) field is displayed only when the Mode field is set
to NAMP-NTAC and the Channel field is set to Voice.
The DSAT/DST field displays the received DSAT/DST sequence. The
received sequence is displayed in hexadecimal and can be checked
against the DSAT value displayed in the DSAT right-hand DSAT field.
Screens Where Field is Present
SIGNALING DECODER (Modes: NAMP-NTAC)