User manual

Series 3700 System Switch/Multimeter Reference Manual Section 14: Verification
3700S-901-01 Rev. C / July 2008 14-21
Verifying 2-wire resistance
Check the normal resistance function by connecting accurate resistance values
to the Series 3700 analog backplane connector and verifying that the displayed
readings fall within specified limits.
CAUTION Do not exceed 300V peak between INPUT HI and INPUT LO
because instrument damage may occur.
To verify normal resistance accuracy:
1. Using shielded, Teflon-insulated or equivalent cables in a 2-wire
configuration, connect the Series 3700 INPUT and SENSE pins to the
calibrator as shown in the "2-wire resistance verification diagram" below.
2. Disable the external sense on the calibrator.
3. Set the Series 3700 to the 2-wire resistance function, set to the proper
range.
4. Source a nominal 100k -100M resistance value. Recalculate the limits
based on the actual value of the resistor and verify that the reading is within
the calculated limits.
Figure 14-10: 2-wire resistance verification
2-wire resistance verification data
Use the following values to verify the performance of the Series 3700. Actual
values depend on published specifications (see Calculating resistance reading
limits (on page 14-4)).