HP 54501A - Lter

LTER
LTER
(Limit
Test
Event
Register)
query
The
LTER
query
allows
the Limit
Test
Event
Register
to
be
read.
The
Limit
Test
Event
Register
contains
the
Limit
Test
Fail
bit.
This
bit
is
set
when
the
limit
test
is
active
and
a
limit
test
has
failed. After
the Limit Test
Event
Register
is
read,
it
is
cleared.
A
Service
Request
(SRQ)
can
only
be
generated
when
the
bit
transitions
from
0
to
1,
therefore
the
bit
must
be
cleared each time
you
would
like a
new
Service
Request
to
be
generated.
Query
Syntax:
:LTER?
Returned
Format:
[:LTER]
{l
|
0}
<NL>
Example:
OUTPUT
707;":LTER?"
ENTER
707;Lmt$
PRINT
Lmt$
HP 54501A
Programming
Root Level
Commands
6-11