Optical Chopper System
18488-D02 Rev G, September 24, 2012 Page 17 www.thorlabs.com
Command Syntax* Description
Get Commands ? List the available commands.
Get Identification id? Returns the model number and firmware version.
Set Frequency freq=n Set the desired internal reference frequency.
Get Frequency freq? Returns the internal reference frequency.
Set Blade Type blade=n Set the blade type (n is number indicated in section 6.4).
Get Blade Type blade? Return the blade type (see section 6.4 for more details).
Set Harmonic Multiplier nharmonic=n Set Harmonic Multiplier applied to external reference frequency (1-15).
Get Harmonic Multiplier nharmonic? Returns the Harmonic Multiplier.
Set Harmonic Divider dharmonic=n Set the Harmonic Divider applied to external reference frequency (1-15).
Get Harmonic Divider dharmonic? Returns the Harmonic Divider.
Set Phase phase=n Set the Phase adjust (0-360°).
Get Phase phase? Returns the Phase adjust.
Set Enable enable=n Set Enable (0=disabled, 1=enabled).
Get Enable enable? Get Enable.
Set Reference ref=n Set the reference mode (0=internal, 1=external).
Get Reference ref? Returns the reference mode.
Set Ref Output output=n Set the output reference mode (0=target, 1=actual).
Get Ref Output output? Returns the output reference mode.
Set Display Intensity intensity=n Set the Display Intensity (1-10).
Get Display Intensity intensity? Returns the Display Intensity.
Get Reference Frequency input? Returns the current supplied external reference frequency.
Restore restore Restore the factory default parameters.
Get Verbose verbose? Returns the verbose mode.
Set Verbose verbose=n When verbose mode is set to 1, status messages are output on the USB.
Set Language text=n n = 0 sets text to English, n = 1 sets text to Chinese.
* All commands and queries are in lower case letters.
If the keyword, format, or argument is incorrect or out of range, the unit will return an error string. The
function is determined by the value set with the mode command in the above table.
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