TB 9-6625-116-24
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-286; AN/GSM-287; or AN/GSM-440. 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
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 parentheses.
Table 2. Minimum Specifications of Equipment Required .
Manufacturer And Model
Common Name
Minimum Use Specifications
(Part Number)
CALIBRATOR1
Fluke, Model 5720A (5720A) (p/o MIS-
Range: 19 M
35947)
Accuracy: 0.125%
FREQUENCY COUNTER
Range: 10 ns to 10 ms
Fluke, Model PM6681/656
Accuracy: SEE
(PM6681/656)
TIME/FREQUENCY
WORKSTATION
Range: Pulse width 4 ns
Accuracy: 2.5%
Range: Pulse width 20 ns
Accuracy: 1.5%
Range: Pulse width 100 ns
Accuracy: 1.3%
Function: DCV
Hewlett Packard, Model 3458A (3458A)
Range: 1 mV to 190 V
Accuracy: 0.63% at 1 mV
increasing to 0.00625% at 190 V
Function: ACV
Range: 3 mVrms to 30 Vrms
Frequency: 1 kHz to 45 kHz
Accuracy: 0.066% at 3 mVrms
increasing to 0.025% at 30 Vrms
RESISTANCE STANDARD
Range: 50 and 1 M
IET Labs, Model HARS-LX-9-0.001
Accuracy: 0.025%
(HARS-LX-9-0.001)
Range: 50 k 1
Accuracy: 0.125%
Datum, Model ET6000-75 (13589305)
TIME/FREQUENCY
Range: 10 MHz
Accuracy: 6.25 x 10-8
WORKSTATION
Used for adjustments only.
1
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
calibration procedure. The following peculiar accessory is required for this calibration:
Fluke, model 9530 active head.
