TB 9-6625-952-24
5. Accessories Required. The accessories listed in table 3 are issued as indicated in
paragraph 4 above and are used in this calibration procedure. When necessary, these items
may be substituted by equivalent items, unless specifically prohibited.
Table 2. Minimum Specifications of Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
Range: 11.976 to 101.639 ms
Fluke, Model PM6681/656
(PM6681/656)
Accuracy: 0.553%
Range: 7.4 to 30.6 vac
Hewlett Packard, Model 3458A
(3458A)
Accuracy: 0.66%
Common name
Description (part number)
Transducer, optical pickup
Hewlett-Packard, Model 506A or equivalent
DC power supply
85 to 95 volts DC
Phototube reflector adapter
Locally manufactured
Amphenol MS female plug to single banana plugs, figure 1, locally
Adapter, Special
manufactured
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 to calibrate the TI are included in this procedure. Additional
maintenance information is contained in the manufacturers' manuals for this TI.
d. Unless otherwise specified, all control and control settings refer to the TI.
a. Open hinged cover of TI.
b. Volts RMS meter will indicate zero. If not, adjust to zero by turning adjusting
screw located below meter face.
c. Connect TI to 115 volt, 400 Hz, single-phase power source capable of providing 250
volt amperes.
d. Connect ground lead of male end of TI power cable to ground.