Rf Gain; Step Attenuation - Agilent Technologies N9039A Service Manual

Troubleshooting
A21 Radiated Input Board Assembly Troubleshooting

RF Gain

The A21 Radiated Input Board Assembly provides 15 dB of step gain for filtered
signals above 30 MHz. The step gain may be turned on and off in the service
menu.
A21 Radiated Input Board Assembly also provides some additional variable gain
to compensate for the loss of the RF signal path. If the instrument has a variable
gain problem it may be corrected by running the instrument adjustments.

Step Attenuation

The A21 Radiated Input Board Assembly provides step attenuation for filtered
signals above 30 MHz. The step gain may be set to 0 dB and 10 dB and then from
12.5 dB to 57.5 dB in 2.5 dB steps. The step gain may be set in the service menu.
74 Chapter 2