Fluke 1535 Calibration Manual page 17

4. To calibrate the PWM function, use the PC and serial communication software to enter these commands
Command
cal start_pwm
pwm 0
adc hv r
cal_param pwm 0
0 V_READ ADC_READ
pwm 7.3
adc hv r
cal_param pwm 1
7.3 V_READ ADC_READ
pwm 69.5
adc hv r
cal_param pwm 2
69.5 V_READ ADC_READ
pwm 71.3
adc hv r
cal_param pwm 3
71.3 V_READ ADC_READ
pwm 73.0
adc hv r
cal_param pwm 4
73.0 V_READ ADC_READ
pwm 74.8
adc hv r
cal_param pwm 5
74.8 V_READ ADC_READ
pwm 76.5
Operation / Purpose
Connect the high voltage meter between L and G
Enter PWM calibration mode
Set PWM ratio to 0 %
Measure the L-G voltage by the high voltage
meter, the measured (in Volts) is V_READ
Read the HV analog-to-digital conversion value
Write the calibration parameter 0, use measured
value V_READ and read value ADC_READ in the
previous two steps
Set PWM ratio to 7.3 %
Measure the L-G voltage by the high voltage
meter, the measured (in Volts) is V_READ
Read the HV analog-to-digital conversion value
Write the calibration parameter 1, use measured
value V_READ and read value ADC_READ in the
previous two steps
Set PWM ratio to 69.5 %
Measure the L-G voltage by the high voltage
meter, the measured (in Volts) is V_READ
Read the HV analog-to-digital conversion value
Write the calibration parameter 2, use measured
value V_READ and read value ADC_READ in the
previous two steps
Set PWM ratio to 71.3 %
Measure the L-G voltage by the high voltage
meter, the measured (in Volts) is V_READ
Read the HV analog-to-digital conversion value
Write the calibration parameter 3, use measured
value V_READ and read value ADC_READ in the
previous two steps
Set PWM ratio to 73.0 %
Measure the L-G voltage by the high voltage
meter, the measured (in Volts) is V_READ
Read the HV analog-to-digital conversion value
Write the calibration parameter 4, use measured
value V_READ and read value ADC_READ in the
previous two steps
Set PWM ratio to 74.8 %
Measure the L-G voltage by the high voltage
meter, the measured (in Volts) is V_READ
Read the HV analog-to-digital conversion value
Write the calibration parameter 5, use measured
value V_READ and read value ADC_READ in the
previous two steps
Set PWM ratio to 76.5 %
Measure the L-G voltage by the high voltage
meter, the measured (in Volts) is V_READ
Insulation Tester
Calibration Procedure
:
Response
"cal start_pwm"
"pwm adjusted"
ADC_READ "pwm_volt_adc"
"pwm param"
"pwm adjusted"
ADC_READ "pwm_volt_adc"
"pwm param"
"pwm adjusted"
ADC_READ "pwm_volt_adc"
"pwm param"
"pwm adjusted"
ADC_READ "pwm_volt_adc"
"pwm param"
"pwm adjusted"
ADC_READ "pwm_volt_adc"
"pwm param"
"pwm adjusted"
ADC_READ "pwm_volt_adc"
"pwm param"
"pwm adjusted"
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