Mainframe Calibration - Keithley 6430 Instruction Manual

19-6 Calibration

Mainframe calibration

Use the procedures discussed below to calibration the mainframe without the Remote
PreAmp. See Remote PreAmp calibration later in this section for information in calibrating the
Remote PreAmp.
NOTE
Mainframe calibration menu
You can access the calibration menu by pressing the MENU key and then selecting CAL in
the main menu. Mainframe calibration menu selections include:
•
•
•
•
•
•
Mainframe calibration procedure
The mainframe calibration procedure described below calibrates all ranges of both the cur-
rent and voltage source and measure functions. (Resistance calibration is not required.) Note
that each range is separately calibrated by repeating the entire procedure for each range.
Step 1: Prepare the Model 6430 for calibration
1.
2.
3.
4.
5.
The mainframe must be separately calibrated before calibrating the Remote
PreAmp.
UNLOCK: Enables calibration.
EXECUTE: Allows you to execute the calibration procedure for the selected function
and range.
VIEW-DATES: Displays calibration and calibration due dates.
SAVE: Saves new calibration constants.
LOCK: Disables calibration.
CHANGE-PASSWORD: Allows you to change the calibration password.
With the power off, disconnect the Remote PreAmp from the mainframe.
Turn on the Model 6430 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.
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: 006430.) Press ENTER to complete the process.
Press EXIT to return to normal display. Instrument operating states will be set as sum-
marized in Table 19-2.