Voltage Source Accuracy - Keithley 2651A Reference Manual

Model 2651A High Power System SourceMeter® Instrument Reference Manual

Voltage source accuracy

Follow the steps below to verify that the Model 2651A output voltage accuracy is within specified
limits. This test involves setting the output voltage to each full-range value and measuring the
voltages with a precision digital multimeter.
1. With the power off, connect the digital multimeter (DMM) to the Model 2651A output terminals
using 4-wire connections, as shown below.
2. Select the multimeter DC volts measuring function.
3. Press the SRC key to source voltage and make sure the source output is turned on.
4. Enable the Model 2651A 4-wire (remote sense) mode by pressing the CONFIG key and then the
SRC key.
5. Select V-SOURCE > SENSE-MODE > 4-WIRE.
2651A-901-01 Rev. A / March 2011
Figure 114: Connections for voltage verification
Digital multimeter
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
!
!
Input HI
Input
LO
S S
LO HI
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
!
Appendix B: Calibration
OUTPUT
LO HI
40V, 50A MAX.
HI
LO
B-13