ILX Lightwave LDC-3700B Series - Page 78

COMMAND REFERENCE
Command Reference
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CHAPTER 4
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The ERRors? query returns a list of command and device errors which have occurred since the last
query. These errors are notated by a number which corresponds to the type of error which occurred.
See Chapter 3 for information regarding error handling.
Parameters None.
Notes The response data will be a list of the current errors. The errors are represented by numbers and
are separated by commas. A response of 0 indicates that no errors were reported. The response
data is sent as character data. Up to 10 error codes are stored between error queries.
Examples "ERR?" −response: 0, means no errors reported.
"Errors?" −response: 201,407, means that the <PROGRAM DATA> (parameter) value out of range
error and the High Temperature Limit error were reported since the last query.
Action Requests the instrument to identify itself.
Response Returns a comma delimited standard format ASCII identification string, from information stored in
the instrument during manufacture.
The LASer:CALMD command sets the laser’s photodiode feedback responsivity (the CAL PD
parameter).
Parameters An <nrf value>, in microamps/milliwatt. The range is 0 to 1000.
Notes If the parameter is set to 0, the LDC−3700B Series Laser Diode Controller will operate in a constant
I
PD
mode, when Constant P mode is selected.
The parameter should be set to 0 for I
PD
operation modes. Otherwise, the value of this parameter is
used to convert between I
PD
and P
PD
values. The units of this parameter are microamps/milliwatt.
Examples "LAS:CALMD 0" −action: sets the CAL PD parameter to 0. This enables the constant I
PD
mode of
operation.
"Laser:Calmd 1" −action: sets the CAL PD parameter to 1.00 microamp/milliwatt. Therefore, a
photodiode feedback current of 1 microamp will cause the P
PD
display to read 1 milliwatt.
The LASer:CALMD? query returns the value of the laser’s photodiode feedback responsivity (CAL
PD parameter) setting.
Notes If this value is 0, the LDC−3700B Series Laser Diode Controller will be set to operate in constant I
PD
mode, and the I
PD
set point value will be in effect. If this value is non−zero, the LDC−3700B Series
ERRors?
COMMON
DEVICE DEPENDENT
FRONT PANEL
*IDN?
COMMON
DEVICE DEPENDENT
FRONT PANEL
LASer:CAL MD <nrf value>
PD <nrf value>
COMMON
DEVICE DEPENDENT
FRONT PANEL
LASer:CAL MD?
PD?
COMMON
DEVICE DEPENDENT
FRONT PANEL
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