Cdma2000: Power Meter Presets - Agilent Technologies EPM-P Series Programming Manual

CDMA2000
The cdma2000 set-up provides:
•
•
The measurement is a continuously gated measurement on a 3GPP
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 10ms, 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 10ms
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 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 CDMA2000. Commands not listed are preset
according to their DEFault values (for further information refer to Table
11-1):
Table 11-20: 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
Agilent E4416A/E4417A Programming Guide
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Average power in a cdma2000 signal (bandwidth <=5MHz).
Peak power and peak-to-average ratio of the signal over a defined,
statistically valid number of samples. The reading is continuously
refreshed. This indicates how cdma2000 channel loading affects
peak power and power distribution.
Setting
+1900.000 MHz
NORM
E9321A/25A: DEF
E9322A/26A: DEF
E9323A/27A: HIGH
Gates 1 - 4: 0
Gate 1: 10 ms
Gates 2 - 4: 0
SYSTem Subsystem
SYSTem:PRESet <character_data>
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.
11-53