TB 9-6625-113-24
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 Set, AN/GSM-286; AN/GSM-287; or AN/GSM-440 and Secondary Reference
Calibration Standards Set, NSN 4931-00-621-7878. 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 parentheses.
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 accessories are required: BNC cable assembly
IET PN 1689-9602, remote test fixture IET PN 1689-9600, and extender cable IET PN
1657-9600.
Table 2. Minimum Specifications of Equipment Required.
Manufacturer and
model
Common name
Minimum use specifications
(part number)
Range: 1 pF to 10 pF
IET Model 1693
(1693)
MEASURING SYSTEM
Accuracy: See chart below.
(IMS)
25
15
5
-5 1
2
3
4
5
6
7
8
9
10
Pico Farads
Range: 10 pF to 100 pF
Accuracy: See chart below.
3
2
1
0
10 20 30 40 50 60 70 80 90 100
Pico Farads