User`s guide

Conﬁguring the HP/Agilent 8922 Multi-Band Test System

Zero the Power Meter

The HP/Agilent 8922 and HP/Agilent 83220 each have independant power

meters. When testing a mobile in the GSM900 (and E-GSM) band the HP/Agilent

8922 power meter is used to measure the transmitted power level from the mobile,

and when testing a mobile in the DCS1800 band the HP/Agilent 83220 power

meter is used. To ensure that both instruments’ power meters function correctly,

they must be zeroed before instrument operation and then regularly in subsequent

operation to guarantee continued measurment accuracy.

NOTE: Failure to regularly zero the HP/Agilent 8922 and HP/Agilent 83220 power meters results

in measurment inaccuracies after a long period of time. Although both instruments are

always zeroed prior to shipping from the factory, they still require their power meters to be

regularly zeroed to guarantee measurement accuracy. It is recommended that the power

meters are zeroed on a weekly basis as a minimum. Note that it is not a requirement to zero

the power meter for every mobile that is tested.

To Zero the Power Meter of the HP/Agilent 8922

1 Ensure that no external instruments, test devices or mobiles are connected to the HP/

Agilent 8922 Multi-Band Test System.

2 Switch on the HP/Agilent 8922 Multi-Band Test System, navigate to the CONFIGURE

screen, select the Radio Type and set it to GSM900 or E-GSM.

3 Press the front panel to display the Cell Status screen and select the

field.

CELL

CNTL

Pwr Zero

Power Zero