5. DC Log Amplifier Adjustments
7. Reduce the input power by 40
dB,
to -58
dBm
(
use an attenuator or a source with a
good relative amplitude accuracy).
8. If the signal is lower on the screen than expected (delta marker reads a change of greater
than 40 dB, such as
-4ldB)
then adjust A4R544 (
see Figure 2-7) for an even lower level
and press
LCAL),
ADJ CURR IF STATE .
Allow sufficient time for the analyzer to complete
the adjustment.
9. If the signal is higher on the screen than expected (delta marker reads a change of less
than 40
dB,
such as reads -39
dB)
then adjust A4R544 for an even higher level signal and
press
LCAL),
ADJ CURR IF STATE . Allow sufficient time for the analyzer to complete the
adjustment.
10. Repeat the adjustment and adjust current state until the delta marker reads -40 dB
f2
dB.
Adjustment Procedures 2-31
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