TB 9-4931-540-24
Table 1. Calibration Description - Continued
Test instrument parameters
Performance specifications
Frequency range: 20 Hz to 10 MHz
1 M flatness
0.7 dB
Flatness:
Frequency range: 10 Hz to 40.1 MHz
1.5 dB
Flatness:
Noise
Resolution
Average
indication
setting
(dBm)
30 kHz
<-100
10 kHz
<-104
3 kHz
<-108
1 kHz
<-111
300 Hz
<-115
100 Hz
<-122
30 Hz
<-127
10 Hz
<-132
3 Hz
<-137
40 Hz <-123 dBm (1 Hz)
Low frequency response
Frequencies: Pwr line freq., 5 kHz, 100 kHz, 1 MHz, and 10 MHz
Accuracy: <-120 dBm
Local oscillator sideband
Spurious responses: <-80 dB
Harmonic distortion
Spurious responses: <-80 dB for 50 input
<-70 dB for 1 M input
Frequency range: 3 Hz to 30 kHz
Accuracy: 20% of BW settings at 3 dB points
Selectivity (shape factor): <11:1 (60 dB BW/3 dB BW)
Tracking generator flatness
Flatness: 0.7 dB
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 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.