Instructions
Table Of Contents
- Model DMM6500 6½-Digit Multimeter User's Manual
- 1 Introduction
- 2 Front-panel overview
- 3 Using a remote interface
- 4 Making basic front-panel measurements
- 5 Measuring DC voltage with high accuracy
- 6 Measuring 4-wire resistance with offset compensation
- 7 Scanning temperature at a set time interval
- 8 Grading and binning resistors
- 9 Measuring power using digitizing and TSP-Link
- 10 Troubleshooting FAQs
- About this section
- Where can I find updated drivers?
- Is there any software to help me get started?
- Why did my settings change?
- Why can't the DMM6500 read my USB flash drive?
- How do I upgrade the firmware?
- How do I change the command set?
- How do I save the present state of the instrument?
- How do I save what is displayed on the screen?
- What is the ethernet port number?
- 11 Next steps
- Contact information
Model DMM6500
6½ Digit Multimeter User's Manual Section 6: Measuring 4-
wire resistance with offset compensation
DMM6500-900-01 Rev. B / August 2019 6-3
Figure 36: Rear-panel connections for 4-wire resistance measurements
3. Connect the INPUT HI and SENSE HI connections to one of the device-under-test (DUT) leads.
Connect the sense connection as close to the DUT as possible.
4. Connect the INPUT LO and SENSE LO to the other DUT lead. Connect the sense connection as
close to the DUT as possible.
To prevent electric shock, test connections must be configured such that the user cannot
come in contact with test leads or any device under test (DUT) that is in contact with the
conductors. It is good practice to disconnect DUTs from the instrument before powering the
instrument. Safe installation requires proper shields, barriers, and grounding to prevent
contact with test leads.
There is no internal connection between protective earth (safety ground) and the LO
terminals of the DMM6500. Therefore, hazardous voltages (more than 30 V
RMS
) can appear on
LO terminals. This can occur when the instrument is operating in any mode. To prevent
hazardous voltage from appearing on the LO terminals, connect the LO terminal to protective
earth (safety ground) if your application allows it. You can connect the LO terminal to the
chassis ground terminal on the front panel or the chassis ground screw terminal on the rear
panel. Note that the front-panel terminals are isolated from the rear-panel terminals.
Therefore, if you are using the front-panel terminals, ground to the front-panel LO terminal. If
you are using the rear-panel terminals, ground to the rear-panel LO terminal. Failure to follow
these guidelines can result in injury, death, or instrument damage.