12 SYSTem Subsystem
524 Keysight N8262A Programming Guide
NADC
The NADC set-up provides:
– Average power measurement of both active timeslots in NADC or IS-136 “full
rate” transmission. This assumes that there are two timeslots to be measured
in each frame as for example with timeslots 0 in the following diagram:
Figure 12-2 A trace display of the active timeslots
– A trace display of the active timeslots.
The measurement is started by detecting the RF burst—for example the burst
emitted by a mobile—using the internal RF level trigger. The internal level trigger
is set to –20 dBm. Time-gating is used to measure the average power in two
active timeslots which are separated by two inactive timeslots
Table 12-40 TD-SCDMA: Power meter presets: Window/Measurement settings
Function Secondary Channel Sensor
No Sensor Non P-Series Sensor P-Series Sensor
Display setup
Lower window Dual numeric Dual numeric Dual numeric
Lower window/lower measurement (LL)
Feed
Gate 1 primary channel
[a]
Secondary channel
[a]
Gate1 secondary channel
[a]
(Channel B)
Measurement Pk-to-Avg Avg Avg
[a] For further information refer to “Primary and Secondary Channels” on page 473.
0120
2
1
IS-136 full rate frame
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