Procedure Overview - HP 8924C Application Manual

4. Calibrate the Channel Power measurement.
Manual Operation:
1. Position the cursor next to the Power Meas
field.
2. Press the knob.
The Test Set will display "Zeroing Average
Power...", then "Calibrating Channel Power...."
until calibration is complete.
Calibration may take a minute or longer, depending on the RF Channel Std and Alt Chn Std field settings. If
you are performing calibration using the HP-IB command below, be aware that the Test Set will accept
(handshake) HP-IB commands during the calibration routine, but none of these "buffered" HP-IB command
functions will be executed until channel power calibration is complete.
HP-IB Help
If your controlling application has anI/O timeout enabled, and a query such as
"STAT:OPER:CAL:EVEN?" is sent after the channel power calibration has
started, make sure that sufficient time is given for the Test Set to complete
calibration and provide a query response in its output queue. Or, disable the
timeout during channel power calibration.
Bit 0 in the Calibrating Status Event Register is Digital Power Zeroing (Power
Meas "Zero" field). Bit 1 is Channel Power Calibration (Power Meas "Calibrate"
field). With the Transition Filter Register in its default state, the Test Set will
respond to the "STAT:OPER:CAL:EVEN?" query command with a decimal 3 .
HP-IB Syntax
"MEAS:CDM:CHAN:CAL" !calibrates Channel Power measurements.
"STAT:OPER:CAL:EVEN?" !queries the Calibrating Status Event Register"

Procedure Overview

1.
N:\mkt\MANUALS\HP8924C\APPMOD\BOOK\chapters\amcal.fb
"Connect the Test Set's generator to the Test Set's analyzer." on page
RF IN/OUT and DUPLEX OUT connectors.
Chapter 1, Calibrating the Test Set
Calibrating Channel Power Measurements
CDMA CELLULAR MOBILE TRANSIMITER TEST
Chan Power
Power Meas
Calibrate
30.
33