TB 9-6625-2181-24
Table 9. Attenuator Accuracy - Continued
Test instrument
Calibrator output
10 dB/STEP
switch setting
Min
Max
41
39.880
40.120
5
9.855
10.145
6
19.830
20.170
7
29.805
30.195
8
39.780
40.220
9
49.755
50.245
10
59.730
60.270
1Upon
completion of this check, with TI remaining on 40 dB, adjust
calibrator for +20 dBm output and reestablish reference level by resetting
true rms voltmeter REL/dBm pushbutton for 0.0 dBm.
(13) Repeat (1) through (12) above at calibrator frequencies of 10 kHz and 100 kHz.
b. Adjustments. No adjustments can be made.
18. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.
12