TB 9-6695-288-35
Table 1. Calibration Description - Continued.
Test instrument parameters
Performance specifications
Frequency range: 10 Hz to 110 kHz
Accuracy: 2% of selected frequency (with frequency vernier in cal
position)
Level flatness: 0.1 dB, 20 Hz to 20 kHz
0.2 dB, 10 to 20 Hz and 20 to 110 kHz
Fundamental rejection
Range: 10 Hz to 110 kHz
Accuracy: >-100 dB, 10 Hz to 20 kHz
>-90 dB, 20 to 50 kHz
>-83 dB, 50 to 110 kHz
Induced distortion
Range: 10 Hz to 110 kHz
Accuracy: <-95 dB, 10 Hz to 20 kHz
<-90 dB, 20 to 30 kHz
<-85 dB, 30 to 50 kHz
<-70 dB, 50 to 110 kHz
total
Range: 10 Hz to 110 kHz
distortion
Accuracy: <-93 dB, 10 Hz to 20 kHz
<-85 dB, 20 to 30 kHz
<-80 dB, 30 to 50 kHz
<-70 dB, 50 to 80 kHz
<-65 dB, 80 to 110 kHz
Distortion
measurement
Frequency range: 10 Hz to 110 kHz
accuracy
Distortion measurement range: 0.01% FS to 100% FS (-80 to 0 dB)
Accuracy: 1 dB, 20 Hz to 20 kHz
1, -2 dB, 10 to 20 Hz and 20 to 50 kHz
1.5, -4 dB, 50 to 110 kHz
1Not
calibrated below 20 Hz and above 100 kHz.
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set 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 is shown in parenthesis.
usage accessories, issued as indicated in paragraph 4 above and are not listed in this
calibration procedure. The following peculiar accessory(ies) is (are) also required for this
calibration: Feedthrough termination, 600Ω, 1%; Feedthrough termination,
50 Ω, 1%.
CHANGE 1
3
