Keithley DMM6500 Calibration Manual

Model DMM6500 6½-Digit Multimeter with Scanning Calibration and Adjustment Manual Section 2: Performance verification
DMM6500-905-01 Rev. A/July 2018 2-21
Resistance verification
Use the following information to verify the performance of the DMM6500 resistance functions.
Four-wire resistance verification
To verify the 4-wire resistance function, you will:
• Use shielded, Teflon-insulated or equivalent cables in a 4-wire configuration.
• Characterize the calibrator 1 Ω and 10 Ω nominal values with an external reference digital
multimeter (DMM); verify accuracy from the reference DMM readings.
• For the 100 Ω to 100 MΩ ranges, verify accuracy from actual calibrator source values.
• Verify that the displayed readings are within specified limits.
Verify 4-wire resistance accuracy
To verify 4-wire resistance accuracy:
1. Connect the DMM6500 INPUT and SENSE terminals to the calibrator as shown in the following
figure.
Figure 10: Connections for 4-wire resistance accuracy verification
2. Set the calibrator for 4-wire resistance with external sense on.
3. On the DMM6500, press the FUNCTION key and select 4W Res.
4. Press the MENU key.
5. Under Measure, select Settings.
6. Set Offset Compensation On.
7. Verify that Open Lead Detector is Off.
8. On the Home screen, select the button next to Range and select 1 Ω.
9. Source the nominal zero and full-scale resistance values for the 1 Ω to 10 kΩ ranges. Source the
nominal zero value for the 100 kΩ range. Refer to the tables in Calculated limits (on page 2-22).

Keithley DMM6500 Specifications

General

Resolution	6.5 digits
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
DC Current Range	10 µA to 10 A
AC Current Range	10 µA to 10 A
Temperature Range	-200 °C to 1820 °C
Display	5-inch capacitive touch screen
Resistance Range	100 MΩ
Frequency Range	3 Hz
Sampling Rate	1 MS/s
Connectivity	USB, LAN, GPIB (optional), TSP-Link
Memory	7 million readings