Remote Error Reporting; Front Panel Calibration - Keithley 2425 Service Manual

Model 2425 Service Manual

Remote error reporting

You can detect errors while in remote by testing the state of EAV (Error Available) bit (bit
2) in the status byte. (Use the *STB? query to request the status byte.) Query the
instrument for the type of error by using the appropriate :SYST:ERR? query. The Model
2425 will respond with the error number and a text message describing the nature of the
error. See Appendix B for details.

Front panel calibration

The following front panel calibration procedure calibrates all ranges of both the current
and voltage source and measure functions. Note that each range is separately calibrated by
repeating the entire procedure for each range.
Step 1: Prepare the Model 2425 for calibration.
1.
2.
3.
4.
Turn on the Model 2425 and the digital multimeter, and allow them to warm up for
at least one hour before performing calibration.
Press the MENU key, then choose CAL and press ENTER. Select UNLOCK, and
then press ENTER. The instrument will display the following:
PASSWORD:
Use ENTER or EXIT.
ß, ©, ¹, ƒ
Use the up and down range keys to select the letter or number, and use the left and
right arrow keys to choose the position. Enter the present password on the display.
(Front panel default: 002425.) Press ENTER to complete the process.
Press EXIT to return to normal display. Instrument operating states will be set as
summarized in Table 2-2.
Calibration 2-9