THORLABS DFB13TK User Manual page 17

Low-Noise DFB Laser System
List of Responses
Value
000: OK
100: Unknown command
101: Syntax error
102: Invalid parameter
103: Unknown Tag
104: Not Writeable
105: Unknown Response
106: Device Error
111: Response Too Large
Making Safety Interlock Connections
The DFB13TK is equipped with a remote interlock connector located on the rear panel. In order to enable the
laser, a short circuit must be applied across the terminals of the Remote Interlock connector. This connection is
made available to allow the user to connect a remotely actuated switch to the connector (i.e. an open-door
indicator).
The switch that is connected to this interlock must be normally open (N.O.), meaning that it must be closed in
order for the unit to be enabled. If the switch is changed to an open state, the amplifier will automatically shut
down.
All units shipped from Thorlabs are configured with a shorting device installed in the interlock connector. If you
are not going to use this feature then you can leave the shorting device installed and the unit will operate normally,
as described throughout this manual. If you wish to make use of the interlock feature you will need to acquire the
appropriate mating connector (e.g., a 2.5 mm mono jack, available at most electronics stores) and wire it your
remote interlock switch.
The electrical specifications for the interlock input are shown in the following table.
Rev. A, August 16, 2024
Command executed successfully
Executed command is unknown
Incorrect number of parameters or the formatting of the parameters is
incorrect.
One of the specified parameters is out of range of allowable values.
A command that takes a tag as a parameter was given a string that it could
not find in the system.
An attempt was made to write a tag value that cannot be modified either
because it is read only or the user does not have the appropriate permission.
This is an internal failure of the device. This should generally only be
returned if there is a software defect.
An error was encountered in the hardware while attempting to execute the
command. NOTE: When this failure happens, the unit may be in an
undefined state. For example, tag values that are written by a command may
not reflect actual hardware settings when the tag is read.
Occurs when a command has a variable length response, and that response
is too large to be sent back to the host.
Descriptions
Chapter 4: Operation
Page 15