TB 9-6625-2330-35
Table 1. Calibration Description - Continued
Test instrument
parameters
Performance specifications
Frequency range: .1 Hz to 500 kHz
Internal oscillator
Accuracy: Same as time base
Distortion: <0.2%, (@ 1 kHz and 400 Hz)
1 V rms into 50 Ω nominal
Output:
Accuracy: 5%
1
Line stability verified to 8.7% line change.
2
Range verified to 110 dBm.
3
Not verified in this procedure.
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-287. 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
standard and TI. Where the four-to-one ratio cannot be met, the actual accuracy of the
equipment is shown in parenthesis.
accessories, issued as indicated in paragraph 4 above, and are not listed in this calibration
procedure. The following peculiar accessories are also required for this calibration: 50 Ω
feedthrough termination, Hewlett-Packard Model 11048C and crystal detector, Hewlett-
Packard Model 423A.
Manufacturer and model
(part number)
Common name
Minimum use specifications
AUDIO ANALYZER
Distortion capability: < .05%
Boonton, Model 1121 (1121)
Range: 20 Hz to 100 kHz
AUTOTRANSFORMER
Range: 105 to 125 V ac
General Radio, Type W10MT3AS3
Accuracy: +1%
(7910809) or Ridge, Model 9020A
(9020A) or Ridge, Model 9020F
(9020F)
Fluke, Model PM6681/ 656
Range: 20 Hz to 2000 MHz
Accuracy: +2.5 ppm or .00025%
(PM6681/656)
COUNTER
Tracor, Model 527E
Range: 10 MHz
DIFFERENCE METER
Resolution: 1 part in 1010
CHANGE 3
