LDC-3900 Series 73
CHAPTER 4
COMMAND REFERENCE
This chapter is a guide to the syntax and usage of the various device-dependent
commands for the LDC-3900 Modular Laser Diode Controller. It contains a
reference section for all of the device-dependent commands, including those
which may only be accessed via remote operation. Therefore, it is of primary
interest to users who wish to utilize the GPIB option.
This chapter is divided into two parts. The first part contains an overview of the
remote commands and syntax used by the LDC-3900 Modular Laser Diode
Controller. The second part contains all of the LDC-3900 commands in
alphabetical order. The commands that emulate local (front panel) operation are
denoted by the solid box next to the Local label in the upper left corner of the
command description. The error messages which may be displayed on the LDC-
3900 front panel are listed in Chapter 5.
A short BASIC program example for remote operation of the LDC-3900 Modular
Laser Diode Controller is given in Chapter 5, Error Messages contains an
explanation of the error messages that are reported by the LDC-3900 on the
display or via remote operation. on page 174.
The common GPIB (ANSI/IEEE-488.2) commands which are supported by the
LDC-3900 Modular Laser Diode Controller are described in Chapter 3.
Command Set Overview
There are two types of device commands, commands - which cause the LDC-
3900 Modular Laser Diode Controller to do something, and queries - which return
a stored value or state of the instrument. Queries must be terminated with a
question mark (?), while commands may require a parameter(s) to follow.
“TEC:DIS 1"
For example, the "1" in the command "TEC:DIS 1", enables the LDC-3900
Modular Laser Diode Controller TEC display, while a "0" would disable (blank) the
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