4. REMOTE OPERATION
Page 93 © 2002-2007 DH Instruments, a Fluke Company
DP
Purpose Decrease the pressure slowly a given amount using the slow speed.
Command “DP n”
Classic “DP=n”
Arguments n: The decrease in pressure desired (current pressure units). This can be from
0 to 2 % FS of the active range.
Remarks The slow speed will be used for a calculated amount of time (up to 5 seconds) to create the
desired change. The PPC3 will not attempt to control the pressure to a target, so the change in
pressure will be approximate. This is the equivalent of using the step up direct pressure control
key.
Example
(enhanced)
Cmd sent:
Reply:
“DP 2”
“2.000 kPa” (no reply if IEEE-488)
Example
(enhanced)
Cmd sent:
Reply:
“DP? 2”
“2.000 kPa”
Example
(classic)
Sent:
Reply:
“DP=2”
“2.000 kPa”
Errors ERR# 6: The n argument is not within given limits.
See Also “IP”, “DS”, “IS”, “DF”, “IF”
3.4.3, 3.1.3
DRVn
Purpose Read or set the status of external electrical drivers.
Command
Query
“DRVn x”
“DRVn?”
Classic “DRVn=x”
“DRVn”
Arguments n:
x:
The driver to operate. This can be from 1 to 8.
The state to change the driver to; ‘0’ to de-activate it, ‘1’ to activate it.
Remarks The PPC3 control has eight optional external drivers. Driver is used by the optional PURGE
function.
Example
(enhanced)
Cmd sent:
Query reply:
“DRV1 1”
“1” (No reply if GPIB-488)
Example
(enhanced)
Cmd sent:
Query reply:
“DRV2? 1”
“1”
Example
(classic)
Sent:
Reply:
“DRV1=1”
“DRV1=1”
Errors ERR# 6: The n or x arguments are not within given limits.
See Also 3.4.7
DS
Purpose Decrease the pressure slowly.
Command “DS n”
Classic “DS=n”
Arguments n: ‘0’ Closes the slow down valve.
‘1’ Opens the slow down valve.
Remarks Opening the slow down valve causes the pressure to decrease slowly.
Example
(Enhanced)
Cmd sent:
Reply:
“DS 1”
“1” (no reply if IEEE-488)
Example
(Enhanced)
Cmd sent:
Reply:
“DS? 1”
“1”
Example
(Classic)
Sent:
Reply:
“DS=1”
“DS=1”
Errors ERR# 6: The n argument is a ‘0’ or a ‘1’.
See Also “IS”, “DF”, “IF”, “DP, “IP”
Figure 12
ERR
Purpose Read the new available error message from the Error Queue.
Query “ERR?”
Classic “ERR”
Remarks This program message obtains additional details about an error that has occurred. If the user
receives an “ERR# nn” reply, or the enhanced mode is enabled using the IEEE-488 interface and
an error has been detected, the error is put into a FIFO Error Queue. The “ERR” program
message pulls and replies the oldest error message available. “OK” is replied if there are no error
messages left.
Example
(enhanced):
Query sent:
Query reply:
“ERR?”
“Numeric argument missing or out of range”
Example
(classic)
Sent:
Reply:
“ERR”
“Numeric argument missing or out of range”
See Also 4.4.2
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