HP 8921A - Alarm Level High; Alarm Level Low

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Chapter 10, Signaling Encoder (AF Generator 2)
Nordic Mobile Telephone (NMT) Encoder
Alarm Level Low
This field sets the lower trigger level for the signal-strength measurement’s alarm
for the Phi signal.
Valid Entry Range: 0 through F (hex)
NMT Frames Affected: 20, 25.
Operating Considerations
This field is only used with the STD900 standard.
Alarm Level High
This field sets the upper trigger level for the signal-strength measurement’s alarm
for the Phi signal.
Valid Entry Range: 0 through F (hex)
NMT Frames Affected: 20, 25.
Operating Considerations
This field is only used with the STD900 standard.
Area #
The area number field identifies which MTX is used to call an MS. This
identification prevents MS to BS calling problems caused by co-channel
interference.
Valid Entry Range: 1 through 4
NMT Frames Affected: 1b, 1bS, 1bTA1, 1bTA2, 2a, 2a’, 2a’’, 2e, 3bTA2, 3b, 3bTC2, 4,
4TA2, 4b, 4bTA2, 10a, 10aAC, 10b, 10c, 10d, 11a, 11b, 12, 30.
Operating Considerations
This information is used to encode the information in the last three digits of the
Add Info field, rather than taking the information directly from that field.
This field is only used with the STD900 standard.