User manual

Section 14: Verification Series 3700 System Switch/Multimeter Reference Manual
14-24 3700S-901-01 Rev. C / July 2008
Verifying 1-OHM and 10-OHM resistance ranges
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. Connect the 1 discrete resistor to the Series 3700 input.
2. For the dry circuit test points, enable the dry circuit resistance attribute
(DRY+).
3. Select the SLOW integration rate with the RATE key.
4. Set the Series 3700 for the 1 range, and make sure the FILTER is on.
Enable OC+ (offset-compensated ohms). Use OC+ for 1 and 10 range
verification.
5. Recalculate reading limits based on actual discrete resistor resistance
values.
6. Repeat using the 10 discrete resistor on the 10 range.
Figure 14-12: Verifying discrete resistance
Discrete 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)).