Bristol 871A - Page 59

Model 871A User’s Manual REMOTE COMMUNICATIONS
Bristol Instruments, Inc. 59
SYSTem Subsystem Functions
:ERRor?
Description
Reads error strings from the SCPI Error Queue. If the Error Queue has
any entries, the Error Queue bit is set in the Status Byte. The
instrument has a 30 entry, first-in, first-out queue. Repeatedly sending
the query :SYST:ERr? returns the error numbers and descriptions in
the order in which they occurred until the queue is empty. Any further
queries return "No error" until another error occurs. A table of possible
errors is shown below.
Query Response
<integer>, <string> (e.g., –104, “Data type error”)
Examples
:SYST:ERR?
SCPI Errors
ERROR NUMBER
DESCRIPTION
0
No error
-101
Invalid character
-102
Syntax error
-103
Invalid separator
-104
Data type error
-220
Parameter error
-221
Settings conflict
-222
Data out of range
-230
Data corrupt or stale
:HELP:HEADers?
Description
Reads a list of all commands and queries supported by the instrument.
Each line of the response is terminated by a linefeed. The first line
indicates the number of bytes of help data that follow. The remaining
lines are strings of help data. All lines of data must be read before
continuing normal operations.
Query Response
#<integer>
<string>
<string>
<string>
...
<string>
Examples
:SYST:HELP:HEAD?