Keithley 6430 User Manual

Performance Verification 18-15
Mainframe resistance measurement accuracy
Use the following steps to verify that Model 6430 resistance measurement accuracy is
within specified limits. This procedure involves applying accurate resistances from a resistance
calibrator and then verifying that Model 6430 resistance measurements are within required
limits.
NOTE Before making resistance measurements, put the Model 6430 in the AUTO SOURCE
mode (press CONFIG, then
Ω , select SOURCE, select AUTO, then press ENTER).
CAUTION Before testing the 20Ω and 200Ω ohms ranges, make sure your resistance
calibrator can safely handle the default test currents for those ranges
(100mA and 10mA for the 20Ω and 200Ω ranges respectively). If not, use
the Model 6430 MANUAL ohms mode, and set the test current to the max-
imum safe calibrator current. Note that Model 6430 measurement accu-
racy is reduced and reading limits should be recalculated using the
additional uncertainty when using MANUAL ohms. See the specifications
in Appendix A for details.
1. With the power off, connect the resistance calibrator to the Model 6430 INPUT/
OUTPUT and 4-WIRE SENSE jacks as shown in Figure 18-4. Be sure to use the 4-wire
connections as shown.
Model 6430
Output LO
Resistance Calibrator
Output HI
Sense HI
Sense LO
WARNING:NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
WARNING:NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
CAUTION:FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
CAUTION:FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
MADE IN
U.S.A.
INPUT/
OUTPUT
42V
PEAK
250V
PEAK
TRIGGER
LINK
4-WIRE
SENSE
HI
LO
LINE RATING
100-240VAC
50, 60, HZ
100VA MAX
RS232
IEEE-488
(ENTER IEEE ADDRESS
WITH FRONT PANEL MENU)
250V
PEAK
5V
PEAK
5V
PEAK
5V
PK
V, Ω,
GUARD
GUARD
SENSE
LINE FUSE
SLOWBLOW
2.5A, 250V
INTERLOCK-
DIGITAL I/O
REMOTE
PreAmp
!
Figure 18-4
Connections for
mainframe resistance
accuracy verification

Keithley 6430 Specifications

General

Brand	Keithley
Model	6430
Category	Measuring Instruments
Language	English