5502A
Operators Manual
5-32
Commands for RS-232 Only
The RS-232 checkbox shows RS-232 interface commands.
The IEEE-488 and RS-232 interfaces send commands to the Calibrator as data, but not
those IEEE-488 functions that must be implemented as a message as specified in the
IEEE-488 standards. For example, the RS-232 interface uses the command REMOTE to
put the Calibrator in the remote mode. Although the IEEE-488 interface could also send a
command REMOTE as data, it does not because this is one of the functions that must be
implemented with the IEEE-488 Standards. The relationship between these IEEE-488
messages and the equivalent RS-232 emulation is shown in Table 5-6.
Table 5-6. Commands for RS-232 Only
IEEE-488 Message
[1]
RS-232
Equivalent
GTL LOCAL
command
GTR REMOTE
command
LLO LOCKOUT
command
SRQ SRQSTR
command
SDC, DCL
^C (<Cntl> C) character [clear the device]
GET
^T (<Cntl> T) character [execute a group trigger]
SPE, SPD
^P (<Cntl> P) character [print the serial poll string]
[1]
See “How IEEE-488 Operates” in this chapter.
With the commands and special characters that emulate the IEEE-488 functions shown
above, there are more commands that are related to operation and control of the actual
RS-232 Host port and these are unrelated to IEEE-488 operations. These include the
subsequent six commands.
SP_SET
SPLSTR
SRQSTR
SP_SET?
SPLSTR?
SRQSTR?
Summary of Contents for 5502A
Page 4: ......
Page 12: ...5502A Operators Manual xii ...
Page 46: ...5502A Operators Manual 2 2 ...
Page 52: ...5502A Operators Manual 2 8 ...
Page 54: ...5502A Operators Manual 3 2 ...
Page 142: ...5502A Operators Manual 4 68 ...
Page 194: ...5502A Operators Manual 6 2 ...
Page 240: ...5502A Operators Manual 7 2 ...
Page 260: ...5502A Operators Manual 7 22 ...
Page 262: ...5502A Operators Manual 8 2 ...
Page 365: ...B 1 Appendix B ASCII and IEEE 488 Bus Codes ...
Page 366: ...5502A Operators Manual B 2 ...
Page 368: ...5502A Operators Manual B 4 ...
Page 378: ...5502A Operators Manual D 6 ...