Agilent Technologies 8935 series e6380a Manuale Utente

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Chapter 5
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CDMA Measurements - Screens and Control Fields
CDMA Measurements
Adjacent Channel Power Measurements
ACP
Adjacent channel power can be measured at frequency offsets of 0 to 
3 MHz, and filter bandwidths of 10 kHz to 1.23 MHz with 100 Hz 
resolution. This measurement returns three, channel-tuned power 
values:
Center Channel
 - the channel power at the center frequency
Upper ACP Ratio
 - the ratio of the total power in the specified 
bandwidth at the specified offset above the center frequency, to the 
power at the center frequency.
Lower ACP Ratio
 - the ratio of the total power in the specified 
bandwidth at the specified offset below the center frequency, to the 
power at the center frequency.
NOTE
This measurement must be calibrated using the 
ACP Cal
 field each 
time the tune frequency is changed. You must always remove power at 
the ANT IN or RF IN/OUT connector before calibrating channel power 
to ensure accurate calibration.
Screens on which this measurement is made:   
• CDMA ANALYZER
• CDMA GENERATOR
Channel Power Measurements
Chan Pwr
Channel power can be measured using one of two filters selected with 
the 
Ch Pwr Filt
 field on the CDMA ANALYZER screen:
1.23M
 - Channel power is the absolute power level of the RF signal 
in a 1.2 3MHz bandwidth centered around the RF channel or tune 
frequency setting. 
30kHz
 - Channel Power measures the power in a 30 kHz band. 
NOTE
This measurement must be calibrated using the 
Chan Pwr Cal
 field 
each time the tune frequency is changed. You must always remove 
power at the ANT IN or RF IN/OUT connector before calibrating 
channel power to ensure accurate calibration.
Refer to the Agilent Technologies 8935 CDMA Base Station Tests 
Applications Guide
 for more information about channel power 
measurements.