TB 9-6625-2009-24
Table 1. Calibration Description - Continued
Test instrument parameters
Performance specifications
Bandwidth switching
Range: Between 3 to 300 Hz
Accuracy: 0.5 dB LOG
5% LIN
Range: 1 to 300 Hz
Accuracy: l dB LOG
10% LIN
Input attenuator
Range: LIN, 0.2 mV to 1 V
Accuracy: 3% of FS
Log sweep
Range: 20 Hz to 43 kHz
Accuracy: 20%
Tracking oscillator output
Frequency range: 5 Hz to 50 kHz
Output level: 0 to 2 V rms
Accuracy:
Response: 3%
Frequency: 2.5 Hz
Distortion: 1% or less
LO output
Range: 1 to 1.5 MHz
Accuracy: 5 Hz
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.
Table 2. Minimum Specifications of Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
AUDIO ANALYZER
Range: 10 Hz to 100 kHz
Boonton, Model 1121 (1121)
Capability: >0.3% distortion
measurement
AUTOTRANSFORMER
Range: 115 V ac
General Radio, Type W10MT3AS3
(7910809) or Ridge, Model 9020A
Accuracy: 1%
(9020A) or Ridge, Model 9020F
(9020F)