COMMAND REFERENCE
LDC-3900 Device-Dependent Commands
10_15 LDC-3900 Series 85
CHAPTER 4
LDC-3900 Device-Command Reference
The following pages contain a reference for the device-dependent commands of
the LDC-3900 Modular Laser Diode Controller. This reference contains useful
information for both local and remote operation of the LDC-3900.
References to the front panel labels are capitalized in the following reference
pages (as is done throughout this manual). Therefore, a reference to the Laser
display is meant to signify the actual 5-digit display labeled Laser on the front
panel of the LDC-3900 Modular Laser Diode Controller, while a reference to the
Laser Display refers to the same-labeled switch area of the LDC-3900.
In some references, parentheses are used to signify the labeled area for a
particular switch or LED Indicator on the front panel. For example, (TEC Display)
Set refers to the switch labeled "Set" in the TEC Display area of the front panel.
Note: For LDC-3900 v3.2 and above:
If a command is sent to module which does not support the command, an error E533 (LAS
command) or E433 (TEC command) will be generated. Also, if a query is issued to a
module which does not support the query, in addition to the error code, the response will be
"-inf." For example, if the TEC:V? query is sent to a 39032 module, the response would be
"-inf" and E433 would be generated.
If a command receives a parameter which is out of range, the value will not be changed.
Instead, an error will be generated, either E222 for over-range or E223 for under-range.
Prior to v3.2, out-of-range parameters would force the setting to a minimum or maximum
condition.
Note: Some commands which expect BOOLEAN values (true/false) will accept a non-zero
value as true.
The BEEP command controls the LDC−3900 Modular Laser Diode Controller’s beeper. The beeper
can be used to signal error or warning conditions.
Parameters An <nrf value>, 0 = OFF (totally disabled); 1 = ON, enabled for normal operation; and 2 = beep
once.
Notes Disabling the BEEP will prevent the audible beeper signal from working during front panel operation,
including the calibration signals. The parameter must be a numeric value (0, 1, or 2), and not a
character data substitute (such as ON or OFF).
Examples "BEEP 0" −action: The beeper is disabled.
"BEEP 1" −action: The beeper is enabled for normal operation.
"BEEP 2" −action: The beeper is beeped once.
BEEP
COMMON
DEVICE DEPENDENT
FRONT PANEL
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