Keithley 617 User Manual

5.5.5 Ohms Verification (2kS20MQ Ranges)
Perform ohms verification for the ZkQ-2OMO ranges as
follows:
NOTE
Charge and current verification must be per-
formed before resistance verification.
1. Place the instrument in the ohms mode, select the 2kQ
range, and enable zero check.
2. Verify that the display shows .OOOO il count. If not,
enable zero correct.
3. Short the input leads, disable zero check, and enable sup-
PIWS.
4. Connect the decade resistance box to the Model 617, as
shown in Figure 5-6.
5. Set the decade resistance box to a value of 1.9OOkQ and
disable zero check.
6. Verify that the reading is within the limits stated in Table
5-4. Enable zero check.
7. Select the remaining ranges and repeat steps 5 and 6 for
each range.
Table 6-4. Limits for Ohms Verification IZkQ-20M0
Ranges)
NOTE: LEAVE GREEN DISCONNECTED
6011 CABLE
Ill
, \ o uMozS,p q ISHORTING LINK REMOVED
Figure 6-6. Corrections for Ohms Verification 12kQ-
20MQ Ranges)
5.5.6 Ohms Verification (200MQ and GCl
Ranges)
Accuracy of the 2OOMO. 2G0, 20Ga and 2OOGQ ranges may
be verified as follows:
1. Accurately measure the UJOM'J , 1GQ and 1OGQ resistors
with the teraohmmeter (or obtain the values from Table
5-2) and record the values in Table 5-5. Calculate the
allowable tolerances for each range by determining the
percent value and adding or subtracting from the actual
Value.
2. Place the instrument in the ohms mode and select the
2COMQ, range. Enable zero check and verify that the
display shows CO.00 & 1 count. If not, enable zero correct.
56

Keithley 617 Specifications

General

Brand	Keithley
Model	617
Category	Measuring Instruments
Language	English