Bitg Power Level For Option 010 - Agilent Technologies 8590 Series Service Manual

Making Adjustments

23. BITG Power Level for Option 010

23. BITG Power Level for Option 010
This adjustment applies to:
8593E spectrum analyzers, Option 010
8594E spectrum analyzers, Option 010
8595E spectrum analyzers, Option 010
8596E spectrum analyzers, Option 010
The BITG has two adjustments for setting the output power. The
−10 dB ADJ (A3A15R13) sets the power level when the source power
level is set to −10 dBm, and the 0 dB ADJ (A3A15R18) sets the power
level when the source power level is set to 0 dBm. The −10 dB ADJ acts
as an offset adjustment, while 0 dB ADJ acts as a gain adjustment.
These adjustments are set in the factory for a 10 dB difference in
output power between the −10 dBm and 0 dBm source power level
settings. When installing a replacement BITG, it should only be
necessary to adjust −10 dB ADJ (the offset adjustment) to account for
variations in cable loss from the BITG to the RF OUT 50 Ω connector.
This adjustment is done at a 0 dBm source power level setting. This
ensures that the absolute power level with a 0 dBm source power level
setting is 0 dBm, with little or no affect on the vernier accuracy.
In some cases, the power level at the −10 dBm source power level
setting might be out of tolerance. In such cases, the −10 dB ADJ is set
at a source power level setting of −10 dBm and the 0 dB ADJ is set at a
source power level setting of 0 dBm. These two adjustments must be
repeated until the power level at the two settings are within the given
tolerances.
Equipment Required
Measuring receiver
Power sensor, 1 MHz to 350 MHz
Cable, Type N, 62 cm (24 in.)
Additional Equipment for Option 026
Adapter, Type APC-3.5 (f) to APC-3.5 (f) (two)
142 Chapter 2