HP 8924E, Assembly

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Chapter 6, HP 8924E Performance Verification
CDMA Generator Adjacent Channel Spectral Purity Performance Test 29
N:\mkt\MANUALS\HP8924C\ALR\24e_pt.fb
Procedure
On the Test Set:
1. Press the PRESET key on the Test Set.
2. Access the CDMA CALL CTRL screen.
3. Change the
Sector PWR
field to
-20 dBm/BW
.
On the Spectrum Analyzer:
1. Set the span to 200 kHz.
2. Set the center frequency to 881.520 MHz. (This is the default center frequency of the
CDMA Generator after preset.)
3. Measure the RF level: this is P
center
4. Set the center frequency to the Adjacent Channel frequencies in the PTR table ( see
"CDMA Generator Adjacent Channel Spectral Purity Performance Test 29" on
page 401
). The measured values at these frequencies are P
adj
.
Use the following equation to complete the PTR.
P
relative =
P
adj
- [P
center
+ 12]
P
relative
= Relative Adjacent Channel Power (dBc)
P
center
= Measured Center Frequency Power (dBm)
P
adj
= Adjacent Channel Power (dBm)