TB 9-6625-149-50
SECTION II
EQUIPMENT REQUIREMENTS
4. Equipment Required. Table 2
identifies the
specific equipment used in
this
calibration procedure. This equipment is issued with secondary transfer calibration
standards set 4931-621-7877 and is to be used in performing this procedure. 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 accuracy 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 listed in
table 3 are issued with
secondary
transfer calibration standards set 4931-621-7877 and are to be used in this calibration
procedure. When necessary, these items may be substituted by equivalent items unless
specifically prohibited.
Table 2. Minimum Specifications Required
Manufacturer, model,
Item
Common name
Minimum use specifications.
and part number.
A1
AC CALIBRATOR
Range: 34.29 to 36.41 v rms
Hewlett-Packard, Model 745A
(MIS-10342).
Accuracy: .75%
A2
Range: 0.097 to 515 vdc and 34.29
Dana, Model 5703-S-2127
to 36.41 vac.
(7912606).
Accuracy: .75%
A3
Range: 105 to 125 vac
General Radio, Model
W10MT3AS3 (7910809)
Accuracy: 1%
A4
CALIBRATION ADAPTER
Rise Time: 3 nsec or less
Tektronix, Type TU-7 (7912279).
A5
Range: -1310 to -1390 vdc
EIS, Model ESV (MIS-10276).
Accuracy: .75%
A6
DECADE RESISTOR
Range: 24.5 kilohms
Biddle-Gray, Model 601147-1
(7910328).
A7
Must be compatible with current
Tektronix, Type 540 series
probe.
A8
PLUG-IN2
Range: 0.05 v/cm p-p
Tektronix, Type K or equivalent
Rise time: 12 nsec or less
A9
SQUARE WAVE
Range: 500 kHz
Tektronix, Type 106 (MIS-10284)
Rise time 12 nsec or less
A10
TIME-MARK
Range: 5 sec to 20 nsec
Tektronix, Type 184 (7910242-1).
Accuracy: .75%
1Additional
equipment required; available at site of TI and should be items normally used with TI.
2Additional
equipment required.
4