Keithley DMM6500 Calibration Manual

Section 2: Performance verification Model DMM6500 6½-Digit Multimeter with Scanning Calibration and Adjustment Manual
2-12 DMM6500-905-01 Rev. A/July 2018
Digitize voltage verification
To verify digitize DC voltage accuracy, you will:
• Apply accurate voltages from the calibrator to the terminals on the front panel of the DMM6500.
• Verify that the displayed readings are within specified limits.
Use the values in the tables following the steps below to verify the performance of the DMM6500.
Actual values depend on the published specifications (see Example reading limit calculation (on page
2-4)).
The maximum input voltage between INPUT HI and INPUT LO is 1000 V DC and 750 V AC.
Exceeding this value may create a shock hazard.
The maximum common-mode voltage (the voltage between INPUT LO and chassis ground) is
500 V
PEAK
. Exceeding this value may cause a breakdown in insulation that can create a shock
hazard.
Verify the digitize voltage 100 mV to 1000 V ranges
Use shielded low-thermal connections when testing the 100 mV and 1 V ranges to avoid errors
caused by noise or thermal effects. Connect the shield to the output LO terminal of the calibrator.
To verify digitize voltage accuracy:
1. Connect the DMM6500 HI and LO INPUT connectors to the calibrator as shown in the following
figure.
Figure 5: Connections for digitize voltage verification 100 mV to 1000 V ranges

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