PPA5xx/15xx communications manual
1-1
1 Using remote control
The instrument is fitted with an RS232 serial
communications port and USB interface as standard, and
may have LAN / GPIB interfaces fitted as an option. All the
interfaces use the same ASCII protocol:
All the functions of the instrument can be programmed via
any interface, and results read back.
The commands are not case sensitive and white space
characters are ignored (e.g. tabs and spaces). Replies
from the instrument are always upper case, delimited by
commas, without spaces.
Only the first six characters of any command are important
– any further characters will be ignored. For example, the
command to set the generator frequency is FREQUE but
the full word FREQUENCY may be sent as the redundant
NCY at the end will be ignored.
Fields within a command are delimited by comma, multiple
commands can be sent on one line delimited with a semi-
colon. Eg.
FQREF,CURRENT;POWER?
Mandatory commands specified in the IEEE488.2 protocol
have been implemented, (e.g. *IDN?, *RST) and all
commands that expect a reply are terminated with a
question mark (query).
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