Command Summary
Keysight 3458A Quick Reference Guide 25
Keysight 3458A Quick Reference Guide 25
ERRSTR?
Error String Query. The ERRSTR? command 
reads the least significant set bit in either the 
error register or the auxiliary error register and 
then clears the bit. The ERRSTR? command 
returns two responses separated by a comma. 
The first response is an error number (100 series = 
error register: 200 series = auxiliary error register) 
and the second response is a message (string) 
explaining the error.
EXTOUT [event][,polarity]
External Output. Specifies the event that will 
generate a signal on the rear panel Ext Out 
connector (EXTOUT signal). This command also 
specifies the polarity of the EXTOUT signal.
event = OFF (0), ICOMP (1), ONCE (2), APER (3), 
BCOMP (4), SRQ (5), RCOMP (6)
Power-on event = ICOMP.
Default event = ICOMP.
polarity = NEG (0), POS (1)
Power-on polarity = NEG.
1024 10 Calibration required
2048 11 Settings conflict
4096 12 Math error
8192 13 Subprogram error
16384 14 System error
Weighted
Value
Bit
Number
Error Conditions