4. REMOTE OPERATION
Page 91 © 2002-2007 DH Instruments, a Fluke Company
AUTOZERO
Purpose Read or set the status of the AutoZ function.
Command
Query
“AUTOZERO n”
“AUTOZERO?”
Classic “AUTOZERO=n”
“AUTOZERO”
Default “AUTOZERO 1”
Arguments n: ’0’ Autozero OFF
’1’ Autozero ON
Remarks The PPC3 AutoZ function can be turned ON and OFF. There is a separate AutoZ flag for
the gauge and absolute modes for each RPT. This command sets the AutoZ status for
the current mode of the active internal or external RPT only.
Example
(enhanced)
Cmd sent:
Query reply:
“AUTOZERO 0”
“0” (No reply if GPIB-488)
Example
(enhanced)
Cmd sent:
Query reply:
“AUTOZERO 0”
“0”
Example
(classic)
Sent:
Query reply:
“AUTOZERO=1”
“AUTOZERO=0”
Errors ERR# 6: The argument was other than a ‘0’ or a ‘1’.
See Also “ZOFFSET”, “MMODE”
3.5.1
CALAMB
Purpose Read or set the on-board barometer calibration coefficients.
Command
Query
“CALAMB adder, mult, CalDate”
“CALAMB?”
Classic “CALAMB=adder, mult, CalDate”
“CALAMB”
Defaults “CALAMB = 0.0, 1.0, 19800101”
Arguments Adder: The Barometer calibration adder (PA).In Pascal.
Mult: The Barometer calibration multiplier (PM) from 0.1 to 100.
CalDate: The date of the calibration in the format “YYYYMMDD”
Remarks The barometer calibration information can be accessed with this program message. Using this
program message overwrites the current calibration coefficients, so caution must be used.
Changes made take effect immediately.
Example
(enhanced)
Cmd sent:
Query reply:
“CALAMB? 2.1, 1.000021, 20011201”
“ 2.10, 1.000021, 20011201” (No reply if IEEE-488)
Example
(classic)
Sent:
Reply:
“CALAMB=2.1, 1.000021, 20011201”
“ 2.1, 1.000021, 20011201”
Errors ERR# 6: One of the arguments is out of range.
See Also 3.5.7.3, 5.3
COM1
Purpose Read or set the RS232 settings for the COM1 port.
Command
Query
“COM1 baud, parity, data, stop”
“COM1?”
Classic “COM1=baud, parity, data, stop”
“COM1”
Arguments Baud: The baud rate. This may be ‘300’, ‘600’,’1200’,’2400’,’4800’, ‘9600’ or ‘19200’.
Parity: The data parity. This may be ‘O’ for odd, ‘E’ for even, or ‘N’ for none.
Data: The number of data bits. This may be ‘7’ or ‘8’.
Stop: The number of stop bits. This may be ‘1’ or ‘0’.
Defaults “COM1 2400,E,7,1”
Remarks The COM1 port is used to communicate to the PPC3. When the COM1 port configuration of
the PPC3 is changed, the program message reply (COM1 use only) is sent at the old COM1
settings, but all subsequent communications are accomplished at the new COM1 settings.
A 200ms or longer delay after receiving the reply to this command will ensure that the PPC3
has changed the COM port settings and is ready for communications at the new settings.
Example
(enhanced)
Cmd sent:
Query reply:
“COM1 9600,N,8,1”
“9600,N,8,1” (No reply if GPIB-488)
Example
(enhanced)
Cmd sent:
Query reply:
“COM1? 9600,N,8,1”
“9600,N,8,1”
Example
(classic))
Sent:
Reply:
“COM1=9600,N,8,1”
“9600,N,8,1”
Errors ERR# 7: Missing or improper program message argument(s).
See Also “PASSTHRU”
3.5.2.1
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