Keithley 263 User Manual

MAINTENANCE
Table 8-3. “Cold” Volts Calibration
Achml
Voltage output
(DMM Reading)
mV
V
V
--.----
E. Offset Voltage Adjust
1. Cap the triax output connector.
2. Remove the two screws securing the top cover to the
rear panel. Leave the cover on for now in order to main-
tain the internal temperature.
3. Select the l.OOOOOML “ladder” range and set the DMM
to the 30V range. The reading on the DMM will be ap-
proximately 15V.
4. On the Model 263, press ZERO and OPERATE in that
order. The reading on the DMM will be the offset voltage
of the Model 263.
5. Set the DMM to the 3V range and allow the reading to
settle.
6. Remove the top cover of the Model 263 and adjust R9
(see Figure 8-5) for a reading of O.OOOOOV +20~cV.
7. Replace the top cover on the Model 263.
263 Calibration
Value
mV
V
V
Table 8-4. “Cold” Low Ohms Calibration
DMM
Range
3 kQ
30 kfi
300 k4l
3M0
263
Range
1 kQ
10 kfl
100 kQ
lMn
Table 8-5. “Cold” High Ohms Calibration
263 Calibration Value
(DMM Reading)
kQ
kfl
kR
MQ
DMM
Range
30 v
30 v
3 v
3oomv
3 v
3oomv
263 “Ladder”
Range
l.OOOOOML
lO.OOOOML
lOO.OOOML
l.OOOOOGL
lO.OOOOGL
lOO.OOOGL
ACtWd
Voltage output
(DMM Reading)
--.----
V
V
V
IIlV
V
mV
263 Calibration
Value
ML
ML
ML
GL
GL
---.---
GL
8-7

Keithley 263 Specifications

General

Brand	Keithley
Model	263
Category	Test Equipment
Language	English