Agilent Technologies 8504B - Page 129

FINAL TRIM SIZE : 7.5 in x 9.0 in
Programming
This
chapter shows
you
how
to
prepare
the
instrument
for
programming
and
send
and recieve
programming
commands
,
and
documents
each
precision
reectometer
command.
During
remote control,
four
front-panel
indicator
lights
show
the
current
HP-IB
status.
These
indicators
are
dened
in
the
following
table
.
Displayed
Status
Indicators
LED
Indicator
GPIB
Mode
R Remote
operation
L Listen
mode
T T
alk
mode
S Service
request
(SRQ)
status
Y
ou
can
return
the
reectometer
to
local
(front
panel)
operation
at
any
time
by
pressing
the
4
LOCAL
5
key
.
This
is
the
only
front-panel
key
that
is
not
disabled
when
the
reectometer
is
remotely
controlled
over
HP-IB
by
a
computer
.
4-2
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