Keithley 2635 Reference Manual

4-18 Return to Section Topics 2600S-901-01 Rev. C / January 2008
Section 4: Basic Operation Series 2600 System SourceMeter® Instruments Reference Manual
WARNING Hazardous voltages may be present on the output and guard
terminals. To prevent electrical shock that could cause injury or
death, NEVER make or break connections to the Series 2600 while
the output is on. Power off the equipment from the front panel or
disconnect the main power cord from the rear of the SourceMeter
before handling cables connected to the outputs. Putting the
equipment into standby does not guarantee the outputs are not
powered if a hardware or software fault occurs.
Contact check commands
Table 4-7 summarizes basic contact check commands. See Section 12 for more information on
using these commands.
Table 4-7
Basic contact check commands
Command
*
Description
flag = smuX.contact.check()
rhi, rlo = smuX.contact.r()
smuX.contact.speed = speed.opt
smuX.contact.threshold = rvalue
Determine if contact resistance is lower than threshold.
Return the contact resistance.
Set speed_opt to one of the following:
0 or smuX.CONTACT_FAST
1 or smuX.CONTACT_MEDIUM
2 or smuX.CONTACT_SLOW
Resistance threshold for the contact check function.
*smuX = smua for the Model 2601/2611; smuX = smua (Channel A) or smub (Channel B) for the
Model 2602/2612.
Figure 4-4
Contact check measurements
S LO
LO
CHANNEL A
LO GLO HI G G G HI
SS
KEITHLEY Series 2600
HI
S HI
DUT
R
S
R
S
R
S
R
S
R
C
R
C
R
C
R
C
Cable/Relay
Resistance
Contact
Resistance

Keithley 2635 Specifications

General

Brand	Keithley
Model	2635
Category	Measuring Instruments
Language	English