TB 9-6695-261-35
standard and TI. Where the four-to-one ratio cannot be met, the actual accuracy of the
equipment selected is shown in parenthesis.
5. Accessories Required. The
accessories required for this
calibration are common
usage accessories issued as indicated in paragraph 4 above, and are not listed in this
Table 2. Minimum Specifications of
Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
AUDIO ANALYZER
Range: 10 Hz to 100kHz
Boonton, Model 1121 (1121)
Distortion: <0.05%
Range: 105 to 125 V ac
General Radio, Type W10MT3AS3
Accuracy: 1%
(7910809) or Ridge, Model 9020A
(9020A)
Range: 8.973 to 9.027 at 10 Hz
Fluke, Model 887AB/AN
Accuracy: 0.0625% ( 0.3%)
(887/AB/AN)
Range: 8.9775 to 9.0225 V ac at
100 Hz to 10 kHz
Accuracy: 0.0625% ( 0.0756%)
Range: 9.9 ms to 1,008,990 Hz
Fluke, Model PM6681/656
Accuracy: 0.25%
(PM6681/656)
Range: -23 to +23 V dc
Hewlett-Packard, Model 3458A
Accuracy: 1%
(3458A)
Range: 10mV to 2.5 V p-p
Tektronix, Type 2465BOPT46
(2465BOPT46)
Accuracy: 3%
Risetime: < 20ns
Range: 0.978 to 9.182 V rms at Fluke, Model 8922A/AA
1kHz
(8922A/AA)
Accuracy: 0.5%
Range 8.82 to 9.18 V rms at
100kHz and 999 kHz
Accuracy: 0.5% (0.7% at 999 kHz)
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
calibration.
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 calibrate the TI are included in this procedure. Additional
maintenance information is contained in the manufacturer's manual for this TI.