Zeroing The Dc_Fm, Dc Current, Tx Power, And Cdma Power Functions - HP 8924C Assembly

Zeroing the DC_FM, DC Current, TX Power, and CDMA Power Functions

N:\mkt\MANUALS\HP8924C\ALR\per_adj.fb
These functions generate calibration offsets when selected. They are located on
various Test Set screens because they are meant to be performed as a routine
optimization procedure during normal instrument operation.
DC FM Zero
This function nulls any DC offset on the MODULATION INPUT connector when
DC coupling the modulating signal to the Signal Generator Synthesizer.
1. Disconnect any signals to the MODULATION INPUT connector.
2. Access the analog RF GENERATOR screen using the RF GEN key.
3. Select the DC FM Zero field (under FM Coupling).
DC Current Zero
This function zeroes the DC Current measurement.
1. Disconnect any connections to the rear-panel DC Current Meas connectors.
2. Access the analog AF ANALYZER screen using the AF ANL key.
3. Select Zero under the DC Current field
TX Power Zero
This function zeroes the TX Power measurement.
1. Disconnect any cables to the ANTENNA IN or RF IN/OUT connectors.
2. Access the analog TX TEST screen using the TX TEST key located in the ANLG
SCRNS group of keys.
3. Select Zero under the TX Pwr Zero field.
Power Meas Zero
This function zeroes the Avg Power measurement for measuring CDMA signals.
1. Disconnect any signals to the RF IN/OUT connector.
Access the CDMA CELLULAR MOBILE TRANSMITTER TEST screen by
2.
pressing the TX TEST key located the CDMA SCRNS group of keys.
3. Select Zero under the Power Meas field.
Chapter 4, Periodic Adjustments
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Introduction
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