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MODEL 8559A
PERFORMANCE TESTS
PERFORMANCE TESTS
4
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16. RESOLUTION BANDWIDTH SELECTIVITY (Cont'd)
PROCEDURE:
1.
Set equipment controls as follows:
Spectrum Analyzer:
FREQUENCYBANDGHz
..................................................
.01-3
TUNING
.............................................................
>O.OlOGHz
FREQSPAN/DIV
...............................................................
0
RESOLUTIONBW
.........................................................
lkHz
INPUTATTEN
.............................................................
10dB
REFERENCELEVEL
.......................................................
OdBm
REFLEVELFINE
..............................................................
0
Amplitudescale
........................................................
10dB/DIV
SWEEP TIME/DIV
........................................................
AUTO
SWEEPTRIGGER
.....................................................
FREERUN
ALTIF
.....................................................................
OFF
SIGIDENT
.................................................................
OFF
BLCLIP
....................................................................
OFF
VIDEO FILTER
.........................................................
12 o'clock
Signal Generator:
COUNTERMODE
..............................................
INT,EXPANDXlO
AM
........................................................................
OFF
FM
........................................................................
OFF
FREQUENCYTUNE
....................................................
21.4MHz
RF
..........................................................................
ON
OUTPUTLEVEL
.......................................................
z-3dBm
2.
Connect equipment as shown in Figure
4-1 1.
NOTE
For early instruments that do not feature
A16J3, a 321.4 MHz,
-
25
dBm
signal can be injected directly into the input of Third Converter Assembly
A10 at blue cable
A1OW1. Set signal generator COUNTER MODE to EXPAND
XI00 (most significant digit will overflow).
3.
Adjust signal generator frequency until spectrum analyzer trace is at peak. Put signal generator OUTPUT
LEVEL to position trace at top graticule line.
4. Tune signal generator until trace drops to
2
divisions above graticule baseline. Record signal generator
frequency.
MHz
4
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21