HP 8559A Operation And Service Manual page 136

ADJUSTMENTS
5-22. 3-dB BANDWIDTH ADJUSTMENTS (Cont'd)
PROCEDURE:
Set spectrum analyzer controls as follows:
FREQUENCYBAND
TUNING
RESOLUTIONBW
INPUTATTEN
REFERENCELEVEL
SWEEPTRIGGER
VIDEOFILTER
BASELINECLIPPER
853A (if used)
Connect CAL OUTPUT to spectrum analyzer INPUT
Set a 7.1 division signal level on display with REF LEVEL FINE control. Signal will be 0.9 division from
top graticule line.
Adjust A9R85 LC control for a 5 division wide signal at fifth graticule line.
Set RESOLUTION BW to 3 MHz and FREQ SPAN/DIV to 500 kHz. If necessary, reset signal level to 7.1
divisions with REF LEVEL FINE control. The bandwidth at the fifth graticule line should be between 5.4
and 6.6 divisions.
widths within limits; however, the final measurement of the 1 MHz band-
width must be between 4.5 and 5.5 division at the fifth graticule line. (If the 3
MHz bandwidth cannot be brought within limits by adjustment of A9R85 LC,
change the value of factory-selected resistor A9R120*. If the 300 kHz band-
width cannot be brought within limits by adjustment of A9R85 LC, change
the value of A9R116*.)
Set RESOLUTION BW to 300 kHz and FREQ SPAN/DIV to 50 kHz. If necessary, reset signal level to 7.1
divisions with REF LEVEL FINE control. The bandwidth should be between 5.4 and 6.6 divisions at the
fifth graticule line.
Set RESOLUTION BW to 100 kHz and FREQ SPAN/DIV to 20 kHz. If necessary, reset signal level-to 7.1
divisions with REF LEVEL FINE control. The bandwidth should be between 4.3 and 5.7 divisions at the
fifth graticule line.
ADJUSTMENTS
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TRACE A & TRACE B STORE BLANK (ANALOG DISPLAY)
NOTE
MODEL 8559A
LIN
OFF
OFF