GW Instek GDM-8245 - ACV, ACA, DCA, Ω Short Calibration; Frequency Response Calibration

GDM-8245 Service Manual
56
ACV, ACA, DCA, Ω Short Calibration
Accepted range
< 3 digits (all ranges)
Equipment
 Test leads
Configurations
 GDM-8245: 500mV, 5V, 50V, 500V, 1000V
Verification
procedure
1. Enter CL10 calibration mode (ACV short).
2. Short the V and COM input terminals.
3. Press the Auto/Man key. The secondary display will
show CL11.
4. The instrument will automatically perform a short
calibration for all ACV ranges. After approximately 40
seconds, the secondary display will show CL10 again,
indicating the ACV short calibration is complete.
5. Press the Up arrow to enter CL20 calibration mode
(DCV, ACA, DCA, Ω).
6. Repeat steps 3~4 for the CL20 mode. Approx. 130
seconds.
7. Press Up twice to enter CL40 mode (400mΩ short).
8. Repeat steps 2~4 for the CL40 mode. Approx. 180
seconds.
ACV, ACA, DCA, Ω (shorting) verification is complete.
Frequency Response Calibration
Accepted range
± 4 digits (all ranges)
Equipment
 Multimeter calibrator
 Test leads
Configuration