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Page Title:
Tuning Dial Accuracy - continued |
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  TM 11-6625-2781-14&P-2
Section IV
PERFORMANCE TESTS (cont'd)
4-25. Tuning Dial Accuracy (cont'd)
3. Tune FREQUENCY to the remaining dial calibration points to verify accuracy.
a. 20 MHz
-1
+1 DIV
f.
70 MHz
-1
+1 DIV
b. 30 MHz
-1
+1 DIV
g. 80 MHz
-1
+1 DIV
c.
40 MHz
-1
+1 DIV
h. 90 MHz
-1
+1 DIV
d. 50 MHz
-1
+1 DIV
i.
100 MHz
-1
+1 DIV
e. 60 MHz
-1
+1 DIV
j.
110 MHz
-1
+1 DIV
4. Make the following control settings:
ANALYZER:
RANGE MHz ................................ ................................ ................................ ................................ ..................... 0-11
FREQUENCY ................................ ................................ ................................ ................................ ................ 1 MHz
FINE TUNE................................ ................................ ................................ ................................ ................. Centerec
BANDWIDTH ................................ ................................ ................................ ................................ ............... 0 3 MHz
SCAN WIDTH PER DIVISION ................................ ................................ ................................ ..................... 0 1 MHz
8406A:
COMB FREQUENCY - MC ................................ ................................ ................................ ................................ ..... 1
5. Turn FREQUENCY to 1 MHz; a comb signal should be displayed in 2 divisions of center graticule line.
-2
+2 DIV
6. Tune FREQUENCY to the remaining dial calibration points to verify accuracy.
a. 2 MHz
-2
+2 DIV
f.
7 MHz
-2
+2 DIV
b. 3 MHz
-2
+2 DIV
g. 8 MHz
-2
+2 DIV
c.
4 MHz
-2
+2 DIV
h. 9 MHz
-2
+2 DIV
d. 5 MHz
-2
+2 DIV
i.
10 MHz
-2
+2 DIV
e. 6 MHz
-2
+2 DIV
j.
11 MHz
-2
+2 DIV
4-12
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