Model 617 Volts Calibration - Keithley 263 Instruction Manual

APPLICATIONS
2. Place the Model 617 on the volts function and 2OOmV
range.
3. Zero correct the Model 617 by enabling zero check
and zero correct in that order.
4. Program the Model 263 to output OO.OOOmV and re-
lease zero check on the Model 617.
5. Zero the display of the Model 617 by pressing SUP-
PRESS.
6. Program the Model 263 to output 190.0WmV.
7. Adjust the display of the Model 617 to read
190.COmV using the ADJUST buttons.
8. Program the Model 263 to output OO.oOOmV by
pressing ZERO.
9. On the Model 617, disable zero correct and suppress.
10. Using Table 5-3 as a guide, repeat steps 3 through 9
for the 2V and 20V ranges.
11. With the Model 343A set to zero volts, connect it to
the Model 263 as shown in Figure 5-6.
12. Select the 2COV range and zero correct the Model 617
by enabling zero check and zero correct in that order.
13. Set the Model 343A to output 19O.oOOV to the Model
263.
14. Release zero check on the Model 617, and progmm
the Model 263 to output the external voltage source
to the Model 617.
15. Adjust the display of the Model 617 to read 19O.OOV
using the ADJUST buttons.
16. Place the Model 263 and the Model 343A in standby.
17. On the Model 617, disable zero correct.
18. Turn off the Model 343A and disconnect it from the
Model 263.
Table 5-3. Model 617 Volts Calibration
617
Range
263
External
Output
DC Calibrator 617
Voltage Voltage Reading
Ohms Calibration
Perform the following procedure to calibrate the ohms
function of the Model 617:
1. Connect the Model 263 to the Model 617 as shown in
Figure 5-5. Note that Model 263 COMMON must be
connected to Model 617 COMMON.
2. Enable GUARD on the Model 263 and set the Model
617 guard switch to the "ON" position.
3. Place the Model 617 in the ohms function and 2GO
range.
4. Zero correct the Model 617 by enabling zero check
and zero correct in that order.
5. Program the Model 263 to output the IGR resistor.
The actual value of that resistor will be displayed by
the Model 263.
6. Release zero check on the Model 617 and allow the
resistor reading to settle.
7. Adjust the display, using the ADJUST buttons, to
correspond to the reading on the Model 263.
8. Disable guard on the Model 263 and set the Model
617 guard switch to the "OFF" position.
9. Using Table 5-4 as a guide, repeat steps 4 through 7
for the 2OOMQ, 2OMQ 2MQ, and 2OOkL-L ranges.
10. Set the Model 617 to the 2OkQ range.
11. Zero correct the Model 617 by enabling zero check
and zero correct in that order.
12. Set the Model 263 to the 1OkW range and press ZERO
to source ohms to the Model 617.
13. Release zero check on the Model 263. The reading on
its display is test lead resistance and zero offset.
14. Enable suppress on the Model 617 to zero the dis-
play.
15. Press ZERO on the Model 263 to source 1OkQ to the
Model 263. The actual value of that resistor will be
displayed by the Model 263.
16. Adjust the displayed reading on the Model 617 to
correspond to the reading on the Model 263.
Table 5-4.
Model 617 Ohms Calibration
617
Rang.2
2GQ
2ooh4.Q
2oMn
2MQ
2ookQ
2okQ
263
Calibration
Resistance*
(Nominal)
1GO
loom
1om
1MQ
lOOkI2
1okQ
617
Reading
*Actual calibration resistance value is displayed on
the Model 263.
5-9