Keysight Technologies P Series Programming Manual page 491

CDMA2000
The cdma2000 set-up provides:
– Average power in a cdma2000 signal (bandwidth <=5 MHz).
– Peak power and peak-to-average ratio of the signal over a defined, statistically
The measurement is a continuously gated measurement on a 3 GPP cdma2000
signal. Its aim is to measure the peak and average power corresponding to a <0.01 %
probability that there are no peaks above the returned peak reading. Time gating is set
to 10 ms, corresponding to 200,000 samples. Triggering is set to occur continuously
internally to the meter. The internal trigger is set to AutoLevel. A reading over the 10
ms period is returned, then the reading is re-initiated for the next 10ms period. In this
way the reading always relates to a position beyond 0.01 % on the CCDF and will
refresh to track any signal or DUT changes.
The following table shows the power meter presets when <character_data> is
set to CDMA2000. Commands not listed are preset according to their DEFault
values (for further information refer to
Table 12-11 cdma2000: Power meter presets
Command
Frequency
[SENS[1]]|SENS2:FREQ[:CW|:FIX]
Sensor measurement mode
[SENS[1]]|SENS2:DET:FUNC
Sensor video bandwidth setup
[SENS[1]]|SENS2:BAND|BWID:VID
Gate Setup
[SENS[1]]|SENS2:SWE[1]|2|3|4:OFF:TIME
[SENS[1]]|SENS2:SWE[1]|2|3|4:TIME
Trigger setup
Keysight N8262A Programming Guide
valid number of samples. The reading is continuously refreshed. This indicates
how cdma2000 channel loading affects peak power and power distribution.
Table 12-1):
Setting
+1900.000 MHz
NORM
N1921/2A: OFF
Gate 1: 0 s
Gates 2 - 4: 0
Gate 1: 10 ms
Gates 2 - 4: 0
SYSTem Subsystem
Comments
Frequency setting
Measurement mode
Sensor video bandwidth
Delay between trigger point and time
gated period.
Length of time gated period for time gated
measurements.
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