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S:\HP892XX\USRGUIDE\manual\decoscrn.fb
Chapter 8, Signaling Decoder Screen
NMT Decoder
Frame Log
The Frame Log area lists the recorded frame information generated by the encoder
and received by the decoder. Field descriptions for this area are listed together.
D
The Direction column tells if a frame was transmitted by the encoder (T), or
received by the decoder (R).
Frame Digits
This column lists the information part of the recorded frames, displayed as
hexadecimal digits.
Num
This column lists the reference numbers assigned to the recorded frames in the
order they were transmitted and received.
Time
The times in this column indicate when each frame was transmitted or received
after
Run Test was selected. The times are listed in bit intervals that are
dependent on the data rate set in the NMT Encoder.
For example, at a data rate of 1200 bps, one bit interval is equivalent to 0.833 ms
(1/1200).
Type
This column lists the NMT standards frame type for each frame.
Operating Considerations
The received frame type is determined using the decoder’s Standard field
setting, and the encoder’s
DUT field setting. If these settings do not agree with the
actual DUT and its standard, the received (R) frame types may not be correctly
identified.
The transmitted frame type is determined by the Send f commands used in the
NMT test program being executed.
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