DH Instruments PPCK PLUS, Operation And Maintenance Manual

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PPCK+™ Operation and Maintenance Manual
©2001 DH Instruments, Inc .
Page 82
DF
Purpose Decrease the pressure at the fast rate.
Command “DF n ”
Classic “DF= n ”
Arguments ‘0’
‘1’
Stops the pressure decrease.
Starts the pressure decrease.
Remarks The PPCK+ will set and maintain the fast decrease rate until “DF=0” or “ABORT”
is sent.
Example
(enhanced) Cmd sent:
Reply: “DF 1”
“1” (no reply if IEEE-488)
Example
(classic) Sent:
Reply: “DF=1”
“DF=1”
Errors ERR# 6: The n argument is a ‘0’ or a ‘1’.
See Also 3.1.2.2, “DS”, “RATES”, “ABORT”, “RS”
DP
Purpose Decrease the pressure a given amount.
Command “DP n ”
Classic “DP= n ”
Arguments n The decrease in pressure desired (current pressure units).
Remarks The PPCK+ will set a pressure that is lower than the current pressure by the specified
amount.
Example
(enhanced) Cmd sent:
Reply: “DP 2”
“2.000 kPa” (no reply if IEEE-488)
Example
(classic) Sent:
Reply: “DP=2”
“2.000 kPa”
Errors ERR# 6: The n argument is not within given limits.
See Also 3.1.2.2, “IP”, “RATES”, “RS”
DRVn
Purpose Read or set the status of the external electrical driver.
Command
Query “DRV n x ”
“DRV n ?”
Classic “DRV n=x ”
“DRV n ”
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 PPCK+ control has eight optional external drivers.
Example
(enhanced) Cmd sent:
Query reply: “DRV1 1”
“1”
Example
(classic) Sent:
Reply: “DRV1=1”
“DRV1=1”
Errors ERR# 7: The n or x arguments are not within given limits.
See Also 3.3.2