Performance Verification
1-5
Example limits calculation
As an example of how verification limits are calculated, assume you are testing the 2mA
range with a 1.9mA input current. Using the Model 2500 one-year accuracy specification
of ±(0.1% of r 50nA offset), the calculated reading limits are:
Limits = 1.9mA ± [(1.9mA
×
0.1%) + 2µA]
Limits = 1.9mA ± (1.9
µ
A + 2µA)
Limits = 1.9mA ± 3.9
µ
A
Limits = 1.8961mA to 1.9039mA
Restoring factory defaults
Before performing the verification procedures, restore the instrument to its factory front
panel (BENCH) defaults as follows:
1.
Press the MENU key. The instrument will display the following prompt:
MAIN MENU
SAVESETUP COMMUNICATION CAL
4
2.
Select SAVESETUP and then press ENTER. The unit then displays:
SAVESETUP MENU
SAVE RESTORE POWERON RESET
3.
Select RESET and then press ENTER. The unit displays:
RESET ORIGINAL DFLTS
BENCH GPIB
4.
Select BENCH and then press ENTER to restore BENCH defaults.
Содержание 2500
Страница 2: ...Contains Calibrating and Servicing Information Model 2500 Dual Photodiode Meter Service Manual...
Страница 11: ......
Страница 13: ......
Страница 15: ......
Страница 16: ...1 PerformanceVerification...
Страница 28: ...2 Calibration...
Страница 56: ...3 RoutineMaintenance...
Страница 59: ...3 4 Routine Maintenance Model 2500 Service Manual...
Страница 60: ...4 Troubleshooting...
Страница 74: ...5 Disassembly...
Страница 81: ...5 8 Disassembly Model 2500 Service Manual...
Страница 82: ...6 ReplaceableParts...
Страница 93: ...6 12 Replaceable Parts Model 2500 Service Manual...
Страница 94: ...A Specifications...
Страница 98: ...B CalibrationReference...
Страница 108: ...C CalibrationProgram...
Страница 117: ......
Страница 119: ......
Страница 120: ......
Страница 121: ...Keithley Instruments Inc 28775 Aurora Road Cleveland Ohio 44139 Printed in the U S A...