Programmable AC Source 6430/6420/6415 User‘s Manual
the commands from GPIB. In remote state, all keys on the
front panel except the local key are disabled. The pressing of
local key returns the AC source to local state. Local key can be
disabled through local lockout so that only the controller or the
power switch can return the AC source to local mode.
Device Clear The AC source responds to the Device Clear (DCL) and
Selected Device Clear (SDC) interface commands. These
cause the AC source to clear any activity that will prevent it
from receiving and executing a new command. DCL and SDC
do not change any programmed setting.
DCL,SDC
6.3 Introduction to Programming
All commands and response messages are transferred in the form of ASCII codes. The entire
response messages should be read before a new command is sent, otherwise the remaining
response messages will be lost, and a query-interrupted error will occur.
6.3.1 Conventions
< > Items within the angle brackets are parameter abbreviations.
| Items at both sides of | are separate, alternative parameters. For example, ON | OFF
indicates that either "ON" or "OFF" can be used as a parameter.
[ ] Items within the square brackets are optional. For example, OUTP[:STATe] means
that :STATe may be omitted.
6.3.2 Numerical Data Formats
Formats :
The 6430/6420/6415 AC Sources accept numeric data of the following formats (see next page):
Symbol Description Example
NR1 Digits with no decimal point. The decimal point is
assumed to be to the right of the least significant digit.
123, 0123
NR2 Digits with a decimal point. 12.3, .123
NR3 Digits with a decimal point and an exponent. 1.23E+2,
12.3E−1
6-2
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