HP 8559A Operation And Service Manual page 59

MODEL 8559A
RESOLUTION BANDWIDTH SELECTIVITY (Cont'd)
Signal Generator:
COUNTERMODE
FM
FREQUENCYTUNE
RF
OUTPUTLEVEL
12. Connect equipment as shown in Figure
FIGURE 4-12. RESOLUTION BANDWIDTH SELECTIVITYTESTSETUP, 100 kHzTO 3 MHz
Adjust spectrum analyzer TUNING to locate peak of 35-MHz signal on CRT Reduce signal generator
output if necessary.
Adjust signal generator OUTPUT LEVEL to position trace at top graticule line.
Tune signal generator frequency until trace drops to 2 divisions above graticule baseline. Record signal
generator frequency.
Tune signal generator frequency in direction opposite to that of step 16 until trace peaks (top graticule line)
and then drops to 2 divisions above graticule baseline. Record signal generator frequency.
Calculate and record resolution bandwidth at 60-dB points (difference between frequencies recorded in
steps 16 and 17).
PERFORMANCE TESTS
4-12.
I
ADAPTER
PERFORMANCE TESTS
SPECTRUM
ANALYZER
INPUT
t
ADAPTER
OFF
OFF
ON
MHz
MHz
kHz