TB 9-6625-2270-24
Table 1. Calibration Description - Continued
Performance specifications 1 (4 1/2 digit display)
Test instrument parameters
Resistance
Range: 0 to 20 M (in 6 ranges)
(% of reading + digits)
Accuracy:
200 through 2.0 M ...... 0.1 + 1
Range:
20 M ............................... 0.2 + 2
1Specifications
are based on procurement specifications and may not agree with manufacturer's or technical manuals.
2Volts/hertz
product not to exceed 107.
3Ac current verified during dc current check since same shunt resistors are utilized for both functions.
EQUIPMENT REQUIREMENTS
4. Equipment Required. Table 2 identifies the specific equipment to be used in this
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Sets AN/GSM-286, AN/GSM-287 or AN/GSM-705. Alternate items may be used
by the calibrating activity. The items 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 listed in table 2. The accuracies listed in table 2
provide a four-to-one ratio between the 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
Common
Manufacturer and model
name
Minimum use specifications
(part number)
CALIBRATOR
Dc voltage:
Fluke, Model 5720A (5720A) (p/o
Range: .19 to 1000 V
MIS-35947); w amplifier, Fluke
Accuracy: .016 %
5725A/AR (5725A/AR)
Ac voltage:
Range: 190 mV to 750 V
Accuracy: (%)
Voltage
Frequency
100 mV through 190 V.....20 Hz to 50 kHz. ......... 0.566
750 V
....................40 Hz to 10 kHz .......... 0.667
200
....................50 kHz......................... 1.125
Dc current:
Range: 189.61 A to 1.9097 A
Range: 190 to 19 M
Accuracy: (%)
190 through 1.9 M ....................
0.026
19 M
.....................................
0.052
dBm:
Range: -55 to +30 dBm
Accuracy: (dBm)
-55 to -10 ............ 0.125
+15 and +30 ....... 0.0625