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MODEL 8559A
PERFORMANCE TESTS
PERFORMANCE
TESTS
4
-
12. TUNING ACCURACY (Cont'd)
NOTE
The 10 dB attenuator should be connected directly to the INPUT
50Q of the
spectrum analyzer and the
11667A power splitter (no cable assembly should
be used between attenuator and analyzer or power splitter).
8.
Adjust sweep oscillator for CW output at
3.000
GHz, as measured by frequency counter. Vary POWER
LEVEL control as required for accurate measurement. Adjust spectrum analyzer TUNING control to
center signal on display. FREQUENCY
GHz readout should indicate:
Min. Actual Max.
9.
Using procedure of step
8,
check spectrum analyzer tuning accuracy at remaining frequencies listed in
Table
4
-
3. Indication on FREQUENCY GHz readout must fall within corresponding test limits at each
frequency.
NOTE
Use SIG
IDENT to verify that spectrum analyzer is tuned to desired in
-
band
signal response whenever tuning error appears excessive.
TABLE
4-3
TUNING ACCURACY MEASUREMENT
Spectrum Analyzer
FREQUENCY BAND
(GHz)"
0.01
-
3
6
-
9
3
-
9
9
-
1 5
6
-
1 5
12.1
-
21
*nominal band limits
**frequency set to within
+0.05%
RF Source
Frequency
(G Hz)
"
"
0.01
1.5
3
.O
6.1
7.5
9
.O
3.1
6
.O
9
.O
9.1
12.0
15.0
6.1
10.5
15.0
12.1
17.0
21
.O
FREQUENCY GHz READOUT
Maximum
(G HZ)
0.01 1
1
SO6
3.010
6.1 17
7.520
9.023
3.1 10
6.017
9.023
9.123
12.029
15
.035
6.1 17
10.526
15.035
12.129
17.039
2 1.047
Minimum
(G Hz)
0.009
1.494
2.990
6.083
7.480
8.977
3.089
5.983
8.977
9.077
11.971
14.965
6.083
10.474
14.965
12.071
16.961
20.953
Actual
(GHz)