TB 9-6625-967-35
Table 1. Calibration Description
Test instrument parameters
Performance specifications
Frequency response
Dc to 10 MHz
Rise time
35 nsec or less
Deflection factors
Ten calibrated steps for each channel; .01, .02, .05, .1, .2, .5, 1, 2, 5,
and 10 V/div. Continuous adjustments (uncalibrated) from 0.01
to approx. 25 V/div.
Accuracy
Within 3% of indicated deflection in calibrated position.
Input impedance1
1 megohm paralleled by 47 pF
Input coupling1
Ac or dc coupling of signals may be selected for either channel. A
0.1-f capacitor limits low-frequency response to about 2 Hz on ac
coupling.
Maximum input voltage1
600 V (dc plus peak ac) or p-p ac
Channel isolation1
50.000:1 at 100 kHz
Operating modes
Channel 1 only, channel 2 only, alternate, chopped, and added
algebraically.
1This
specification is for information only and is not necessarily verified in this bulletin.
SECTION II
EQUIPMENT REQUIREMENT
procedure. This equipment is issued with secondary transfer standards calibration set
NSN 6695-00-621-7877, secondary transfer standards calibration set AN/GSM-256, NSN
6695-00-525-8175, and maintenance calibration shelter AN/TSM-55 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.
items may be substituted by equivalent items unless specifically prohibited.
Table 2. Minimum Specification of Equipment Required
Minimum Use
Manufacturer, Model, and Part Number
Item
Common Name
Specifications
Level A
AN/GSM-256
AN/TSM-55
A1
AC CALIBRATOR
Range: 17.145 mV to Hewlett-Packard, Ballantine,
---
18.205 V at 1 kHz.
Model 745A-C90
Model 421A-S2
(MIS-10342 Type (6625-00-105-
Accuracy: 0.75%
1)
8198)
A2
AC/DC
Range: -0.4 to +190
Dana, Model
Hewlett-
---
V dc
5703-S-2127
Packard, Model
(7912606)
3490A w/Option
Accuracy: 0.75%
060 (6625-00-
557-8305)
See footnote at end of table.
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