Keithley 2010, Руководство по обслуживанию

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Verifying resistance
Check resistance by connecting accurate resistance values to the Model 2010 and verifying
that its resistance readings are within the specified limits.
CAUTION Do not apply more 1000V peak between INPUT HI and LO or more than
350V peak between SENSE HI and LO, or instrument damage could occur.
Follow these steps to verify resistance accuracy:
1. Using shielded 4-wire connections, connect the Model 2010 INPUT and SENSE jacks
to the calibrator as shown in
Figure 1-5 .
2. Set the calibrator for 4-wire resistance with external sense on.
3. Select the Model 2010 4-wire resistance function by pressing the
Ω
4 key.
4. Set the Model 2010 for the 10
Ω
range, and make sure the FILTER is on. Set the
calibrator output to 0
Ω
, then enable Model 2010 REL.
5. Recalculate reading limits based on actual calibrator resistance values.
2000 MULTIMETER
!
R
Model 2010
5700A Calibrator
Output
HI
Input
LO Output
LO
Note : Use shielded low-thermal cables to
minimize noise. Enable or disable
calibrator external sense as indicated
in procedure.
Sense HI
Sense LO
Sense HI
Sense LO
Input
HI
Figure 1-5
Connections for
resistance verification
(10
Ω
-10M
Ω
ranges)
1-10 Performance Verification