Zero Correct (Z) - Keithley 6512 Instruction Manual

3.2.16 Zero correct (Z)

Purpose
Format
Default
Description
Programming
Note
Examples
To zero correct the instrument, nulling any internal offsets that might affect accuracy.
Z0 Zero correct off
Z1 Zero correct on
Upon power-up, or after receiving a DCL or SDC command, zero correct will be disabled (Z0).
The zero correct and zero check commands work together to cancel any internal offsets that
might upset accuracy. If the instrument is placed in the zero correct mode with zero check en-
abled, it will store a new offset value to be used for subsequent readings. If the instrument is
zero corrected with zero check disabled, the previously stored zero value will be used instead.
Note that the specifications at the front of this manual assume that the instrument has been prop-
erly zeroed.
Use the following procedure to zero the instrument:
1. With zero correct off, place the instrument in zero check by sending C1X.
2. Zero correct the instrument by sending Z1X.
3. Disable zero check by sending C0X. Readings can then be taken in the usual manner.
After sending a zero check command, the instrument will be ready for a new command when
the front end is set up.
Z1X Zero correct instrument.
Z0X Disable zero correct.
C1XZ1C0X Perform complete correction.
IEEE-488 Programming
3-21