IEEE-488 Programming
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.
Programming
See paragraph 3.2.10 for a complete description of data storage.
Note
Examples
B1X
Select data store reading.
B3X
Select minimum reading.
B0X
Choose electrometer reading.
3.2.3 Zero check (C)
Purpose
To zero check the instrument as an aid in nulling offsets.
Format
C0
Zero check off
C1
Zero check on
Default
Upon power-up, or after receiving a DCL or SDC command, zero check will be enabled (C1).
Description
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.
Programming
1. In general, zero check should be enabled when changing input connections (except
Notes
for the coulombs function).
2. After sending a zero correct command, the instrument will be ready for a new command on
reading done.
Examples
C0X
Disable zero check.
C1X
Enable zero check.
3.2.4 Function (F)
Purpose
To program the operating function of the instrument.
Format
F0 Volts
F1 Amps
F2 Ohms
F3 Coulombs
F4 External
Feedback
Default
Upon power-up, or after receiving a DCL or SDC command, the instrument will be in the F0
(volts) function.
Description
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.
Programming
When the instrument responds to a function command, it will be ready to take a reading once
Note
the input circuitry is properly configured.
Examples
F1X
Select amps function.
F3X
Switch to coulombs function.
Summary of Contents for 6512
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