DH Instruments PPCH-G, Руководство по эксплуатации и обслуживанию

Страница: 106 / 160

PPCH-G™ OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 96
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 PPCH-G 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:
Reply: “AUTOZERO 0”
“0”
(No reply if GPIB-488)
Example
(enhanced) Cmd sent:
Reply: “AUTOZERO 0”
“0”
Example
(classic) Sent:
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
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 PPCH-G. When the COM1 port configuration
of the PPCH-G 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 ensureS that the PPCH-G
has changed the COM port settings and is ready for communications at the new settings.
Example
(enhanced) Cmd sent:
Reply: “COM1 9600,N,8,1”
“9600,N,8,1”
(No reply if GPIB-488)
Example
(enhanced) Cmd sent:
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, 4.2.1.1