DH Instruments PPC3 - Page 109

4. REMOTE OPERATION
Page 99 © 2002-2007 DH Instruments, a Fluke Company
MSGFMT
Purpose Read or set the type of program command format to use (enhanced or classic).
Command
Query
“MSGFMT n
“MSGFMT?”
Classic “MSGFMT=n
“MSGFMT”
Arguments n: ‘1’ to use the enhanced command format.
‘0’ to use the classic command format.
Defaults “MSGFMT 0”
Remarks The user can select the type of remote command format to use. This format must agree with
the format sent to the PPC3.
The enhanced query form of this command (“MSGFMT? n”) should always be used to set the
desired format, as it will be accepted regardless of the current format (classic or enhanced).
Example
(enhanced)
Cmd sent:
Query reply:
“MSGFMT 1”
“1” (No reply if IEEE-488)
Example
(enhanced)
Cmd sent:
Query reply:
“MSGFMT? 1”
“1”
Example
(classic)
Sent:
Reply:
“MSGFMT=1”
“MSGFMT=1”
Errors ERR# 6: Missing or improper program message argument(s).
See Also 4.3
NVENT
Purpose Read or set the status of low (negative) vent valve (Gxxx or BGxxx Q-RPT only)
Command
Query
“NVENT n”
“NVENT?”
Classic “NVENT=n”
“NVENT”
Default “NVENT AUTO”
Arguments n: ’0’ to close the low vent valve.
’1’ to open the low vent valve.
‘AUTO’ for the PPC3 to automatically open and close the low vent valve.
Remarks A PPC3 with at least one Gxxx or BGxxx Q-RPT has a low vent valve that is used to vent the
TEST(-) port. This valve is normally controlled automatically depending on current PPC3 operation
but it can be commanded to open or close using the “NVENT” command. The PPC3 may not
immediately open the negative vent valve when commanded to do so, as it checks to make sure
that such an action will not cause harm to the low pressure Q-RPT.
The reply includes two fields. The first indicates the low vent status. The second indicates whether
the low vent function is AUTO or MANUAL
Example
(enhanced)
Cmd sent:
Query reply:
“NVENT 0”
“0, MANUAL”
Example
(enhanced)
Cmd sent:
Query reply:
“NVENT? AUTO”
“1, AUTO”
Example
(classic)
Sent:
Query reply:
“NVENT=1”
“0, MANUAL”
See Also “VENT”
3.5.7.5