TB 9-5985-316-35
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set, AN/GSM-286. Alternate items may be used by the calibrating activity. The
item selected must be verified to perform satisfactorily prior to use and must bear evidence
of current calibration. The equipment must meet or exceed the minimum use specifications
standard and TI.
usage accessories, issued as indicated in paragraph 4 above, and are not listed in the
calibration procedure. The following peculiar accessories are also required for this
calibration: Decade Resistor, Winslow, Model 336 (7907234) or Clarostat, Model 240C
(240C) and voltage divider, 600 Ω, double banana plug to triple banana jack (11047A)
(7911560).
NOTE
The voltage divider accuracy of 1.0 percent is critical in
calibration process.
Manufacturer and model
Common name
Minimum use specifications
(part number)
Dc voltage
Range: 30 V
Accuracy: +0.15%
Ac voltage
John Fluke, Model 5720A (p/o MIS-
CALIBRATOR
Range: 0.3162 to 31.62 V
35947); w/power amplifier, John Fluke,
Frequency: 1.0 kHz to 1.0 MHz
Model 5725A (5725A)
Accuracy: Varying between
+0.15% @ 1.0 kHz to +2.25% @ 1.0
MHz.
Range: 0.5 mV to 30 V dc
Hewlett-Packard, Model 3458A (3458A)
Accuracy: 0.15%
Range: 0.3 to 316.2 mV ac
John Fluke, Model 8922A/AA
TRUE RMS VOLTMETER
Frequency: 1.0 kHz to 1.0 MHz
(8922A/AA)
Accuracy: Nominal
6. Preliminary Instructions
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
name as listed in table 2.
