Zero Check (C); Function (F) - Keithley 6512 Instruction Manual

IEEE-488 Programming
Programming
Note
Examples

3.2.3 Zero check (C)

Purpose
Format
Default
Description
Programming
Notes
Examples

3.2.4 Function (F)

Purpose
Format
Default
Description
Programming
Note
Examples
3-6
While data store is enabled, the maximum (most positive) and minimum (most negative) read-
ings may also be requested by sending the B2 or B3 commands. Note that the maximum and
minimum values are updated at the maximum reading rate while data store is enabled.
See paragraph 3.2.10 for a complete description of data storage.
B1X Select data store reading.
B3X Select minimum reading.
B0X Choose electrometer reading.
To zero check the instrument as an aid in nulling offsets.
C0 Zero check off
C1 Zero check on
Upon power-up, or after receiving a DCL or SDC command, zero check will be enabled (C1).
The zero check command works together with the zero correct command to cancel any internal
offsets that might upset accuracy. See paragraph 3.2.16 for a complete description of the zero
correction process.
1. In general, zero check should be enabled when changing input connections (except
for the coulombs function).
2. After sending a zero correct command, the instrument will be ready for a new command on
reading done.
C0X Disable zero check.
C1X Enable zero check.
To program the operating function of the instrument.
F0 Volts
F1 Amps
F2 Ohms
F3 Coulombs
F4 External Feedback
Upon power-up, or after receiving a DCL or SDC command, the instrument will be in the F0
(volts) function.
The function command and its options allow you to select the type of measurement made by the
Model 6512, and they perform essentially the same operations as the front panel function keys.
The parameter options associated with the function command set the instrument to measure
voltage, current, resistance, charge, or external feedback.
When the instrument responds to a function command, it will be ready to take a reading once
the input circuitry is properly configured.
F1X Select amps function.
F3X Switch to coulombs function.