Chapter
3
GPIBDEEE-488.2 REMOTE OPERATION
3.1
Introduction
When the model 123 1 GPIBAEEE-488.2 interface is installed and the instrument is CO~ected to a host computer,
the LDC-3700 Series
Laser
Diode Controller
can
be
used
as
a remotely controlled
laser
diode
testing instrument.
Possible applications include automatic
Ln
me
data
gathering over a range of controlled temperatures.
In
remote operating mode, the
LDC-3700
Series Laser Diode Controller offers
all
of the features accessible from
the front panel and some advanced features which
can
only be accessed via the interface bus.
In
remote mode you
have access to commands for functions not found on the front panel,
such
as
the
INC
and DEC commands which
automatically increment or decrement the set point
by
a
userdefined
step
value,
calculation of measured
temperature to 6-digit resolution, LASER voltage measurement,
and
control of the conditions which
cause
the
TEC
and LASER controller outputs to
be
shut off.
The model 1231 GPIB/IEEE-88.2 interface allows GPIB/IEEE-488.2 bus control of the LDC-3700 Series Laser
Diode Controller. Information
can
also be read by the host computer and printed or
stored.
Other
features
include:
A
concise and straight-forward command set
Full taWlisten capability
Full
serial
poll capability, with SRQ
Full ldremote capability including
LOCAL
LOCKOUT
c
Meets
ANSYIEEE-488.2-1987
standards
Thls chapter is
a
guide to the
syntax
and
usage
of the various IEEEl488.2 common commands available for the
LDC-3700 Series Laser Diode Controller. It also includes advanced programming tips for remote
use
with the
devicedependent commands, hardware diagrams, and other information relating to remote operation.
Tius chapter is divided into
three
parts.
The
first
part
has
the infonnation for
using
the
GPIB
with the WC-3700
Series Laser Diode Controller. It also
has
sections for each cormion GPIB (ANSI/1EEE-488.2) command which is
supported
by
the LDC-3700 Series Laser Diode Controller.
The second
part
contains information on advanced programming techniques, and
status
reporting.
The third
part
contains information on remote interface messages; these low-level messages are generally
transparent to the user.
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