Fluke 5320A User Manual

5320A
Users Manual
4-4
using the LOΩ HI and LOΩ LO terminals. For 4-wire resistance calibration, additional
connections are necessary using the LOΩ-SENSE HI and LOΩ-SENSE LO terminals.
See To change between 2-Wire and 4-Wire resistance below to change this setting.
Note
4-wire resistance mode is used for low resistance calibrations of UUTs
equipped with the 4-wire measurement technique.
The resistance on the Calibrator’s terminals can be either floating or grounded. When
grounded, the LOΩ LO terminal is connected to earth ground through the ground in the
power line socket using an internal relay. Whether the output is grounded is indicated in
the terminals part of the display. See “To switch between grounded and ungrounded
output” below to change this setting.
R
OUTPUT
LO Ω LO Terminal LO Ω HI Terminal
LO
Ω - Sense LO Terminal LO Ω - Sense HI Terminal
ehq010.eps
Figure 4-1. Simplified Low Resistance Source Schematic
4. With the Terminals area of the display as a guide, connect the UUT’s terminals to the
Calibrator’s terminals.
5. After confirming the settings and connections are correct, press O to connect the
UUT to the selected resistance.
While connected to the UUT, the Calibrator monitors the voltage and current appearing
across the resistance. If the current or voltage exceeds acceptable limits, the Calibrator
will disconnect the output terminals and display an error message. The actual current
flowing in the resistance, along with the maximum allowed current, is displayed in the
PARAMETERS area of the display.
ehq022.bmp
Figure 4-2. Typical Low Resistance Display

Fluke 5320A Specifications

General

Brand	Fluke
Model	5320A
Category	Test Equipment
Language	English