Calibration
2-9
3.
Use the EDIT
and
keys to select the letter or number, and use the
and
arrow keys to choose the position. (Press EDIT
for letters;
for numbers.)
Enter the present password on the display. (Front panel default: 002500.)
4.
Press ENTER to complete the process.
5.
Press EXIT to return to normal display.
Step 2. Input offset voltage calibration
1.
Install a triax shielding cap on both INPUT jacks.
2.
Select OFFSET from the CAL EXECUTION menu, then press ENTER. The unit
will display:
CURRENT OFFSET CAL
Input 0A then press ENTER
3.
Press ENTER to complete input voltage calibration.
NOTE
This step calibrates offset voltage for both channels.
Table 2-3
Front panel calibration summary
Function
1
Calibration step
2
Test connections
OFFSET
INPUT offset voltage
calibration
Channel 1 and channel 2 INPUT jacks left open (capped).
V-CAL
CHAN-1
CHAN-2
Voltage bias calibration
Channel 1 calibration
Positive full scale output
Zero output
Negative full scale output
Channel 2 calibration
Positive full scale output
Zero output
Negative full scale output
DMM to channel 1 OUTPUT and INPUT jacks (
DMM to channel 1 OUTPUT and INPUT jacks (
DMM to channel 1 OUTPUT and INPUT jacks (
DMM to channel 2 OUTPUT and INPUT jacks (
DMM to channel 2 OUTPUT and INPUT jacks (
DMM to channel 2 OUTPUT and INPUT jacks (
I-CAL
CHAN-1
CHAN-2
Current calibration
Channel 1 calibration
Positive full scale input
Zero input
Negative full scale input
Channel 2 calibration
Positive full scale input
Zero input
Negative full scale input
Calibrator to channel 1 INPUT jack (
Calibrator to channel 1 INPUT jack (
Calibrator to channel 1 INPUT jack (
Calibrator to channel 2 INPUT jack (
Calibrator to channel 2 INPUT jack (
Calibrator to channel 2 INPUT jack (
1
CAL EXECUTION menu selections.
2
Steps repeated separately for each range.
Summary of Contents for 2500
Page 2: ...Contains Calibrating and Servicing Information Model 2500 Dual Photodiode Meter Service Manual...
Page 11: ......
Page 13: ......
Page 15: ......
Page 16: ...1 PerformanceVerification...
Page 28: ...2 Calibration...
Page 56: ...3 RoutineMaintenance...
Page 59: ...3 4 Routine Maintenance Model 2500 Service Manual...
Page 60: ...4 Troubleshooting...
Page 74: ...5 Disassembly...
Page 81: ...5 8 Disassembly Model 2500 Service Manual...
Page 82: ...6 ReplaceableParts...
Page 93: ...6 12 Replaceable Parts Model 2500 Service Manual...
Page 94: ...A Specifications...
Page 98: ...B CalibrationReference...
Page 108: ...C CalibrationProgram...
Page 117: ......
Page 119: ......
Page 120: ......
Page 121: ...Keithley Instruments Inc 28775 Aurora Road Cleveland Ohio 44139 Printed in the U S A...