TB 9-6625-2235-24
Table 8. Reference Level (Log) Accuracy
Variable
Test instrument
Measuring receiver
REFERENCE
attenuator
indications1
LEVEL
10 dB step
(dB)
switch settings
control setting
(dBm)
(dB)
Min
Max
-20
10
9.5
10.5
-30
20
19.5
20.5
-40
30
29.5
30.5
-50
40
39.5
40.5
502
-60
49.5
50.5
-70
60
59.5
60.5
-80
70
69.5
70.5
1Variable
attenuator error must be added algebraically.
2Reduce
synthesizer/level generator attenuator setting.
b. Adjustments
NOTE
Adjustment steps (1) through (27) below are used for SN prefix
2436A only.
Adjustment steps (28) through (52) below are used for SN
prefix 2332A and below.
(1) Connect equipment as shown in figure 12.
Figure 12. Log amplifier adjustments - equipment setup.
(2) Position controls as listed in (a) through (e) below:
(a) FREQ SPAN/DIV switch to 0.
30