HP 54501A Programming Reference Manual page 227

ESTOp
Query Syntax: :MEASure:ESTOp?
Returned Format: [:MEASure:ESTOp]
<edge> <NL>
Where:
<edge>
::=
edge number (integer-
NR1 format)
Example:
OUTPUT 707;°:MEASURE:ESTOP?"
ENTER 707; Estop
PRINT Estop
HP 54501A
Programming
Measure Subsystem
14-23