Keithley 2651A Reference Manual page 731

Model 2651A High Power System SourceMeter® Instrument Reference Manual
Step 5. Contact check calibration adjustment
A. As illustrated in the following figure:
•
Short the Model 2651A SENSE LO and OUTPUT LO terminals together.
•
Short the SENSE HI and OUTPUT HI terminals together.
B. Allow the readings to settle, then get the Model 2651A readings:
r0_hi, r0_lo = smua.contact.r()
C. As illustrated in the following figure:
•
Characterize both 50 Ω resistors using the resistance function of the digital multimeter.
•
Connect a 50 Ω resistor between the SENSE LO and OUTPUT LO terminals.
• Connect the second 50 Ω resistor between the SENSE HI and OUTPUT HI terminals.
2651A-901-01 Rev. A / March 2011
Figure 118: Connections for contact check 0 OHM calibration
Model 2651A
LINE FUSE
SLOWBLOW
5.0 A, 250 V
LINE RATING
100-240 VAC
50, 60 Hz DIGITAL I/O
RS-232
500VA MAX.
IEEE-488
LAN
!
!
Figure 119: Connections for contact check 50 ohm calibration
Model 2651A
LINE FUSE
SLOWBLOW
5.0 A, 250 V
LINE RATING
100-240 VAC
50, 60 Hz
DIGITAL I/O RS-232
500VA MAX.
IEEE-488
LAN
!
!
SENSE/GUARD
S S
LO G G G G HI
NO INTERNAL OPERATOR SERVICEABLE PARTS,
WARNING: SERVICE BY QUALIFIED PERSONNEL ONLY.
REPLACE FUSE WITH SAME TYPE AND RATING. CHANNEL A
!
SENSE
LO
SENSE
OUTPUT
HI
LO
50 Ω resistor
(2 places)
SENSE/GUARD
S S
LO G G G G HI
NO INTERNAL OPERATOR SERVICEABLE PARTS,
WARNING: SERVICE BY QUALIFIED PERSONNEL ONLY.
REPLACE FUSE WITH SAME TYPE AND RATING. CHANNEL A
!
SENSE
LO SENSE
OUTPUT
HI
LO
Appendix B: Calibration
OUTPUT
LO HI
40V, 50A MAX.
OUTPUT
HI
OUTPUT
LO HI
40V, 50A MAX.
OUTPUT
HI
B-31