Insulation resistance (HIPOT) tests (7751/7753 only) ............. 5-17
Contact checks .................................................................. 5-18
V-source readback ............................................................. 5-22
Cable discharge ................................................................. 5-23
HIPOT test ........................................................................ 5-24
Test procedure – HIPOT ................................................... 5-26
I-source readback ..................................................................... 5-28
Memory patterns test ................................................................ 5-30
Test circuit ......................................................................... 5-30
Test procedure ................................................................... 5-31
6 Model 2790 DMM Ohms Functions
Introduction ............................................................................... 6-2
Low ohms measurements .................................................... 6-2
Fuse resistance considerations ............................................ 6-2
High ohms measurements ................................................... 6-3
4-wire ohms ................................................................................ 6-3
Offset compensated ohms .......................................................... 6-5
Keithley 7702 module ................................................................ 6-6
Keithley 7751, 7752, and 7753 modules .................................... 6-8
A Specifications
(Models 2790, 7751, 7752, 7753, and 7702) ............................ A-1
Ohms specification calculations (7751/7752/7753) .................. A-8
7751/7752/7753 I-source ................................................... A-8
7751/7753 V-source ........................................................... A-9