Keithley 2000 Calibration Manual

NOTE If your calibrator cannot output the values recommended in Table 2-3, use the left and
right arrow keys, and the up and down range keys to set the Model 2000 display value
to match the calibrator output voltage.
Resistance calibration
Completing the 100V DC calibration step ends the DC voltage calibration procedure. The
Model 2000 will then prompt you to connect 1 k
Ω . Follow these steps for resistance calibration:
1. Set the calibrator output for resistance, and turn on external sense.
NOTE Use external sense (4-wire Ω ) when calibrating all resistance ranges. Be sure that
the calibrator external sense mode is turned on.
2. Perform the calibration steps summarized in Table 2-4. For each step:
• Set the calibrator to the indicated value, and place the unit in operate. (If the calibrator
cannot output the exact resistance value, use the Model 2000 left and right arrow keys
and the range keys to adjust the Model 2000 display to agree with the calibrator resis-
tance.)
• Press the ENTER key to calibrate each point.
• Wait for the Model 2000 to complete each step before continuing.
Table 2-3
DC volts calibration summary
Calibration step
Calibrator
voltage
Allowable range
+10V
-10V
100V
+10.00000V
-10.00000V
+100.0000V
+9V to +11V
-9V to -11V
+90V to +110V
Table 2-4
Ohms calibration summary
Calibration step
Calibrator
resistance*
Allowable range
1k Ω
10k Ω
100k Ω
1M Ω
1k Ω
10k Ω
100k Ω
1M Ω
0.9k Ω to 1.1k Ω
9k Ω to 11k Ω
90k Ω to 110k Ω
0.9M Ω to 1.1M Ω
* Nominal resistance. Adjust Model 2000 calibration parameter to
agree with actual value.
2-10 Calibration

Keithley 2000 Specifications

General

Digits	6.5
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Resistance Range	100 Ω to 100 MΩ
Connectivity	IEEE-488 (GPIB)
Display Type	VFD