Keysight Technologies EPM-P Series Programming Manual page 502

11 SYSTem Subsystem
Table 11-16
Function
Lower window/upper measurement (LU)
Feed
Measurement
Lower window/lower measurement (LL)
Feed
Measurement
[a] For further information refer to
WCDMA
The W-CDMA set-up provides:
– Average power in a W-CDMA signal (bandwidth <=5MHz)
– Peak power and peak-to-average ratio of the signal over a defined, statistically
The measurement is a continuously gated measurement on a 3GPP W-CDMA
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 10ms, corresponding to 200000 samples. Triggering is set to occur
continuously internally to the meter. The internal trigger is set to AutoLevel. A
reading over the 10ms period is returned then re-initiated for the next 10ms
period. In this way the reading always relates to a position beyond 0.01% on the
CCDF curve and will refresh to track any signal or DUT changes.
The following table shows the power meter presets when <character_data> is
set to WCDMA. Commands not listed are preset according to their DEFault values
(for further information refer to Table 11-1):
502
CDMAone: Power meter presets for secondary channel sensors
(continued)
No sensor
Gate 1 primary channel
Peak
Gate 1 primary channel
Peak to avg
valid number of samples. The reading is continuously refreshed. This indicates
how W-CDMA channel loading affects peak power and power distribution.
Secondary channel sensor
Non E9320 sensor
[a]
Gate 1 primary channel
Peak to avg
[a]
Secondary channel
Avg
"Primary and secondary channels"
Keysight EPM-P Series Programming Guide
E9320 sensor
Gate 1 secondary
[a]
1
channel (channel B)
Avg
Gate1 secondary
[a]
[a]
channel (channel B)
Peak to avg
on page 479.