Appendix B: Verification and adjustment
Series 3700A System Switch/Multimeter Reference Manual
B-20
3700AS-901-01 Rev. D/June 2018
4-wire short applied verification data
Use the following values to verify the performance of the Series 3700A. Actual values depend on
published specifications (see
Calculating resistance reading limits
(on page B-4)).
4-wire short applied
Description
Range (V)
Test point (V)
Lower limit (V)
Upper limit (V)
Verify zero values at 100 mVDC
1.00E-01
0.00E+00
-9.000000E-07
9.000000E-07
Verify zero values at 1 VDC
1.00E+00
0.00E+00
-2.000000E-06
2.000000E-06
Description
Range
(Ohms)
Test point
(Ohms)
Lower limit
(Ohms)
Upper limit
(Ohms)
Verify zero values at 1
Ω*
1.00E+00
0.00E+00
-8.000000E-05
8.000000E-05
Verify zero values at 10 Ω*
1.00E+01
0.00E+00
-9.000000E-05
9.000000E-05
The asterisk (*) designates the ranges that offset compensation is being used.
This completes the verification procedure.
Adjustment
Use the procedures in this section to adjust the Keithley Instruments Series 3700A System
Switch/Multimeter.
The information in this section is intended for qualified service personnel only, as described
by the types of product users in the
. Do not attempt these procedures
unless you are qualified to do so.
Some of these procedures may expose you to hazardous voltages, that if contacted, could
cause personal injury or death. Use appropriate safety precautions when working with
hazardous voltages.
For the plug-in modules, the maximum common-mode voltage (voltage between any plug-in
module terminal and chassis ground) is 300 VDC or 300 V
RMS
. Exceeding this value may
cause a breakdown in insulation, creating a shock hazard.
All procedures in this section require accurate equipment adjustment to supply precise DC and AC
voltages, DC and AC currents, and resistance values. Adjustment can be performed any time by an
operator using the remote commands sent either over the IEEE-488 bus or ethernet. DC-only or AC-
only adjustment may also be performed individually.
