NF FRA5014, Instruction Manual

Page: 95 / 107

7.8 Calibration
FRA5014 7-7
7.7.6 Dynamic range test
Connection: OUTPUT OSCILLATOR
→
INPUT CH2, CH3, CH4. CH1 input is shorted (for CH1 test)
OUTPUT OSCILLATOR
→
INPUT CH1, CH3, CH4. CH2 input is shorted (for CH2 test)
OUTPUT OSCILLATOR
→
INPUT CH1, CH2, CH4. CH3 input is shorted (for CH3 test)
OUTPUT OSCILLATOR
→
INPUT CH1, CH2, CH3. CH4 input is shorted (for CH4 test)
Setting: After initializing settings, set the frequency lower limit as 10 Hz, the frequency
upper limit as 100 kHz, frequency points as 40, integration time as 10 s, and AC
amplitude as 7.07 Vrms. Turn output on to have the settings reflected in the output.
Measurement: Perform a sweep measurement and read the results.
If there is strong electromagnetic interference in the area, certain frequencies may
not be within their rated ranges. In such cases, remove the source of noise and try
again.
Judgment: For CH1 test, normal if gain is > 120 dB; for CH2, CH3, and CH4 test, normal if
gain is <
−
120 dB.
7.8 Calibration
If the performance test shows that ratings are not met, contact NF Corporation to have adjustments
and/or calibration done in order to restore original performance.
When calibration is needed, contact NF Corporation or a sales representative.
A fee will be charged for adjustment or calibration performed after expiration of the warranty period.
Coaxial cable
CH1 dynamic range test example
CH1 CH2 OSCILLATOR
FRA
Input shorted
CH3 CH4