17-11.3 Voice Frame Decode
The Voice Frame display is used to decode and
view the received embedded data in the link
control frame of ASTRO transmissions.
17-11.3.1 Embedded Signaling
The ASTRO Option provides a user display of
decoded em
bedded signaling (figure 17-20).
The ASTRO option saves the last 30 frames of
information on a first-in, first-out (FIFO) basis.
User controls are provided to start and stop the
data decoding process and to select a specific
frame for display.
To monitor the received embedded voice frame
data, move cursor to the RF Control zone. Set
the fields as follows:
RF Control: Monitor
Freq: (same as transmitting unit)
B/W: NB
Attenuation: 0dB
Move cursor to the Display Zone. Place cursor
in the “Display:” field and press VOICE
FRAME softkey. Press the decode start
softkey to select continuous decoding of
embedded data. As the analyzer decodes
embedded signaling data, the “Frame Counter”
counts from 0 to 9999. The last 30 frames of
data are stored and can be individually recalled.
To recall a frame, press the decode stop
softkey and place the cursor on the “Frame:”
field. Enter a number from 0 to 29 to recall a
frame of data (29 being the most recent). To
reset the “Frame Counter” or “Frame Number,”
press the frame reset softkey.
The “Voice Frame” decode fields are shown in
figure 17-19. The decode fields are the same as
described for the encode fields in section
17-9.2.2.2 except for the “Raw:” field.
Raw
Field that contains the raw I.C. data prior to
decoding. Data is displayed in hex format.
Figure 17-20-. Voice Frame Decode Display
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