GW Instek GDM-8245 - Capacitance Calibration (Open); Resistance Calibration

GDM-8245 Service Manual
60
Capacitance Calibration (Open)
Accepted range
N/A
Equipment
 N/A
Configurations
 GDM-8245: CL30 calibration mode
Verification
procedure
1. Enter CL30 Calibration mode.
2. Press the Auto/Man key. The secondary display will
show CL31.
3. The instrument will automatically perform an open
calibration for all capacitance ranges. After
approximately 50 seconds, the secondary display will
show CL30 again, indicating the capacitance open
calibration is complete.
Capacitance calibration (open) is complete
Resistance Calibration
Accepted range
±3 digits (all ranges, 19MΩ±40 digits for 20MΩ range)
Equipment
 Resistance calibrator
 Test leads
Configurations
 Resistance Calibrator: 400Ω, 4kΩ, 40kΩ, 400kΩ, 3MΩ,
9.907MΩ, 19MΩ
 GDM-8245 Range: 500Ω, 5kΩ, 50kΩ, 500kΩ, 5MΩ,
20MΩ
Verification
procedure
1. Enter CL50 Calibration mode.
2. Press Ω key to enter Resistance mode. (Range: 500 Ω)
3. Input 0Ω to the DMM.
4. Press SHIFT + REL to negate the resistance of the test
lead cables.