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LDS1000 Controller for Laser Diode Sensors
10.0 Use with a Computer Interface
The LDS1000 electronic controller offers its full measuring capacity when
connected to a computer via an RS-232-C or IEEE-488 interface. Interface
Mode is activated by sending a computer message. It can only be activated
when:
•The physical connection between the controller and the computer is
correct.
•The controller interface parameters and those of the computer are com-
patible.
•The correct computer output is commanded.
•The controller is in the main menu when the connection is established.
Interface Mode allows:
•Flying spot reading of the measured values.
•Execution of synchronous acquisition sequences of a clock inside the
controller, or a logical external TRIG signal.
•Reading the sensor status and the I/O available.
The LDS1000 Controller is delivered with an RS-232-C cable. It will work for
example with an IBM PC compatible computer with the following minimum
configuration:
•A IBM PC compatible computer.
•An RS-232-C or IEEE-488 interface (Hewlett Packard or National
Instrument card).
10.1 Checking the Interface
The controller must be connected to a calculator (RS-232-C or IEEE-488) or
a console (RS-232-C) via an adapted cable. Only connect the instruments
when everything is switched off.
WARNING
Before connecting, check that all equipment is switched off.
10.1.1 RS-232-C Interface
The LDS1000 Controller is delivered with an RS-232-C interface cable. This
cable has a male Sub-D25 connector for the controller connection (cf. dia-
gram). When setting it up, make sure you tighten the support screws.
The other connector is a Sub-D9 pin plug compatible with the series output
of the computer. A Sub-D9/Sub-D25 pin adapter enables it to be linked to all
existing standards. It is useful to note the series output of the computer: it
is usually marked by one of the following: SERIAL, COM1, COM2, etc. (refer
to the computer documentation).
The communication must be obtained with a TERMINAL type program.
Read the software documentation to configure the parameters of the RS-
232-C output. It is recommended, as far as possible, to select the following
parameters, that are the LDS1000 Controller’s default parameters:
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