Performance Testing and Calibration
Calibration Using the Computer Interface
4
4-19
4-23. DC Volts Calibration (Computer Interface)
1. Connect the DC Calibrator to the Fluke 45
X and COM inputs. Then send:
CAL 1
2. Complete steps 1 through 10 in Table 4-7. Then clear the dc volts source.
4-24. AC Volts Calibration (Computer Interface)
1. Connect the AC Calibrator to the Fluke 45 X and COM inputs. Then send:
CAL 2
2. Complete steps 11 through 17 in Table 4-7. Then clear the ac volts source.
4-25. DC and AC Milliamps Calibration (Computer Interface)
1. Connect the mA Calibrator to the Fluke 45 [100 mA] and COM inputs. Then send:
CAL 3
2. Complete steps 18 and 19 in Table 4-7.
3. Now send:
CAL 4
4. Complete steps 20 and 21 in Table 4-7. Then clear the milliamp source.
4-26. DC and AC Amps Calibration (Computer Interface)
1. Connect the Amps Calibrator to the Fluke 45 [10 A] and COM inputs. Then send:
CAL 5
2. Complete step 22 in Table 4-7.
3. Clear the dc amps source. Then send:
CAL 6
4. Complete steps 23 and 24 in Table 4-7, and clear the amps source.
4-27. Ohms Calibration (Computer Interface)
If you do not have the value resistors (290 Ω, 2.9 kΩ, 29 kΩ, etc.) required by the Fluke
45 calibration prompts, the requested value (prompt) may be set to the value available. In
the following procedure, the Fluke 5700A Multifunction Calibrator is used as the ohms
source, with input values of 190 Ω, 1.9 kΩ, 19 kΩ, 190 kΩ, and 1.9 MΩ.
Note
If you are using an ohms calibrator without active 2-wire compensation,
take a zero ohms measurement before entering calibration mode. Use the
test leads that will be used for ohms calibration. Record this zero ohms
value. The CALREF xxx.xx command tells the Fluke 45 to calibrate to the
exact ohms value of the calibrator resistance. For the 290
Ω
and 2.9 k
Ω
steps, xxx.xx should be the calibrator value plus the recorded zero ohms
value.
1. Connect the Ohms Calibrator to the Fluke 45
X and COM inputs. Then send:
CAL 7
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