TB 9-4931-505-24
Table 1. Calibration Description - Continued
Test instrument parameters
Performance specifications
Common-mode rejection
Ratio: 10,000: 1
Range: dc to 10 kHz at 1 to 50 mV/div dc coupled,
with up to 20 V p-p sine wave, decreasing
to 100:1 at 1 MHz. At least 400:1, dc to
10 kHz at 0.1 to 5 V/div dc coupled, with
up to 100 V p-p sine wave, decreasing to
40:1 at 1 MHz. For frequencies above
5 kHz ac coupled, CMRR is same as dc
coupled. Below 5 kHz ac coupled, CMRR
decreases to 400:1 at 10 Hz
Position
Range: + and - approx. 8 div from graticule center
Range: 0 to 10 V and 0 to 1 V.
Internal comparison voltage
Accuracy: 0.2% of dial setting plus 5 mV from 5
to +10 V; 0.2% of dial setting plus 1
mV from 25 mV to 1 V of 0 to 1 V
range. From 0 V to 25 mV, use on-
screen display for greater resolution.
Vc OUT resistance 15 K . Electrical zero 0.5 mV or less
Comparison
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Sets AN/GSM-286, AN/GSM-287 or AN/GSM-705. 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 parenthesis.
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 for this calibration:
EXTENDER, Tektronix, type 067-0645-00 and STANDARDIZER, 5 80 pF; BNC plug to
BNC jack.
Table 2. Minimum Specifications of Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
CALIBRATOR
Range: 1.7145 mV to 14.14 V
Fluke, Model 5720A (5720A) (p/o
rms at 100 Hz and 1 kHz
MIS-35947)
0.75%
Accuracy:
Range: 1 to 10 V dc
Hewlett Packard, Model 3458A
0.75%
(3458A)
Accuracy:
Must be provided with TI
Tektronix, Type R5440
(MIS-28706-1)
