TB 9-6625-336-35
SECTION II
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 and AN/GSM-287. Alternate items may be used by the
calibrating activity when the equipment listed in table 2 is not available. 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.
may be substituted by equivalent items, unless specifically prohibited.
Table 2 Minimum Specifications of Equipment Required
Manufacturer and model
Item
Common name
Minimum use specifications
(part number)
A1
AUTOTRANSFORMER Range: 105 to 125 V ac
General Radio, Model
W10MT3AS3 (7910809)
Accuracy: 1 %
A2
DIFFERENTIAL
Range: 2 mV to 7 V ac; 215 to 250 V dc
John Fluke, Model
887AB/AN (887AB/AN)
Accuracy: 1 %
A3
Range: 99.5 to 221.1 MHz
Hewlett-Packard, Model
COUNTER
5345A (MIS-28754/1 Type 1)
Accuracy: 0.17%
A4
Range: 1.l to 2.l V ac at 100 to 200 MHz Hewlett-Packard, Model
410C(7910902)
Accuracy: 7%
A5
Risetime: 70 ns or less
Tektronix, Type R 5440 (MIS-
28706/1 Type 1) w/plug-ins 5A48
(MIS-28706/3) and 5B42 (MIS-
28706/4)
A6
Range: 2 kHz at 5 mV
Ballantine, Model 6126M
CALIBRATOR
Risetime: 70 ns or less
(MIS-28714 Type 1)
A7
TEST OSCILLATOR
Range: 20 Hz to 5 kHz;
Hewlett-Packard, Model
1 V rms min.
652A (MIS-10224)
A8
VARIABLE
Range: 0 to 40 dB
RLC Electronics, Model A2648
ATTENUATOR
(MIS-10263)
Table 3. Accessories Required
Item
Common name
Description (part number)
B1
ADAPTER
BNC T-type; 2 jacks, 1 plug (MS35173-274C)
B2
ADAPTER1
N plug to BNC jack (10519457)
B3
ADAPTER
BNC plug to N jack (10519458)
B4
ADAPTER
Hewlett-Packard, Model 11042A, 410B probe to N jack and N plug (8899531)
B5
CABLE2
30-in., RG-58/U; BNC plug terminations (7907467)
B6
TERMINATION
51-ohm load on BNC plug (7622749)
B7
TERMINATION
50-ohm feed-through; BNC plug to BNC jack (1 1048B)
B8
TEST LEAD
30-in., RG-68/U; double banana plug to probe and alligator clip (7911305)
1Two
required.
2Three
required.
3
