TB 9-6625-1356-35
Table 2. Minimum Specifications of
Equipment Required
Minimum use
Manufacturer and model
Common name
specifications
(part number)
ATTENUATOR
Range: 0 to 80 dB
Hewlett-Packard, Model 355D (355D)
or RLC Electronics, Model A2648
Accuracy: 0.05 dB ( .1 dB/10 dB)
(MIS-10263)
AUDIO ANALYZER
Range: 10 Hz to 100 kHz1
Boonton, Model 1121
Accuracy: <0.25% distortion
(1121)
Range: 105 to 125 V ac
General Radio, Type W10MT3AS3
(7910809) or Ridge, Model 9020F
Accuracy: 1%
(9020A)
CALIBRATOR
Range: 2.40 to 2.60 V dc
Fluke, Model 5720A (5700A/EP)
(p/o MIS 35947)
Accuracy: 2%
Range: 9.7 Hz to 10.3 MHz
Fluke, PM6681/656
(PM6681/656)
Accuracy: .5%
Hewlett-Packard, Model 3458A
Range: 7 mV to 30.9 V dc
(3458A)
100 mV to 3.2232 V ac
Accuracy: 1.5% dc 0.5% ac
THERMAL CONVERTER
Range: 10 Hz to 10 MHz
Ballantine, Model 1395A-3/1395-3
(7913198-1)
Accuracy: 0.0625% to 100 kHz
0.2% to 1 MHz
0.4% to 10 MHz
Range: 1 mV
Fluke, Model 8922A/AA
(8922A/AA)
Resolution: At least 2 V
1
When certified between 10 Hz and 100 kHz, there is a sufficient confidence factor that distortion will be within tolerance up
to 10 MHz.
6. Preliminary
Instructions
a. The
instructions outlined in
paragraphs 6 and
7 are preparatory to the
calibration
process Personnel should become familiar with the entire bulletin before beginning the
b. Items of equipment used in this procedure are referenced within the text by common
c. Unless otherwise specified, verify the result of each test and, whenever the test
requirement is not met, take corrective action before continuing with the calibration.
Adjustments required to calibrate the TI are included in this procedure. Additional
maintenance information is contained in the manufacturers' manuals for this TI.