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HOW TO POWER DOWN THE COMBINER
Here is the sequence to shut down the controller:
- Turn the master control key off (anti-clockwise) on the remote control,
- Power the optical bench off by pressing the main power switch,
- Unplug the power cord of the power supply from your mains socket
4-3 How to configure the combiner
This chapter describes how to configure the combiner in accordance to one’s application.
A complete operation setup should consist in:
- Setting the power or the current on each laser source (referring to the previous chapter 3-2),
- Configuring the modulation schemes,
- Configuring the output channel(s)
The following paragraphs explain these steps in details.
MODULATION FUNCTIONS
The optical output of each of the laser source can be modulated according to incoming electrical signals:
- The analog modulation functions allow the user to deliver an output power proportionally to the input
voltage: 0V for a nil power, 5V for the maximal power
- The digital modulation function delivers an output power according to two states (“on” and “off”): 0V
for a nil power, 5V for the maximal power
Once the (physical) signal connections are established, the user needs to configure these modulation
functions on each laser source.
IMPORTANT CHARACTERISTICS OF THE MODULATION FUNCTIONS
o On LBX laser sources, the analog modulation function can be used either in constant current or in
constant power mode. Depending on this selection, the input modulation signal will drive either the
optical power or the pump current of the laser source.
o The digital modulation function, however, is only available in constant current mode.
o Refer to the paragraph 6-3, “Modulation in detail”, for detailed information about these
control loops.
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