Racal Instruments 2151 Manual page 49

TABLE
4.13b
Common
Commands
(Continued)
Ref.
A3
-
Self
Test
Query
*TST?
Performs
all tests
not
needing
operator
intervention.
If all
checks
pass then
ASCII
value
0
is
placed
in the
Output Queue.
If
checks
fail
then
the relevant
number
is
placed
in the
Output Queue. The number
output
is
in
NR1
format.
Ref.
A4
-
Operation Complete
*OPC
Causes
the
instrument
to
generate
the operation complete message
in the
Standard
Event
Status Register
when
all
pending
selected device operations are completed.
Ref.
A5
-
Operation Complete Query
*OPC?
As
*OPC,
but
places
an ASCII
value
1
into the
Output Queue
instead
of setting the
Operation Complete message.
This
is
inNRl
format.
Ref.
A6
-
Wait
to
Continue
*WAI
The
instrument
is
prevented from
executing
any
further
commands
or queries
until
there are no
further operations pending.
Ref.
A7
-
Clear Status
Command
Clears
the status reporting
registers.
*CLS
2151
OPS
A1571/DA
4-25