NKT Photonics Koheras ACOUSTIK, Руководство по эксплуатации продукта

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CONTROL settings
Note: The Settings - Wavelength modulation menu item is only available for an
ACOUSTIK system when at least one inserted BASIK module includes the wave-
length modulation feature.
Caution: You can set a BASIK module in the system as the signal source. DO NOT
set more then one module as the source.
ACOUSTIK system – External source connection
As Figure 27 shows, you can connect an external modulation signal source to
rear panel D-sub 9 pin connector of the ACOUSTIK system. Refer to the pin
assignments as described in
Table 11 on page 85 . For signal generation circuit
examples, refer to the BASIK module documentation for further information on
using wavelength modulation.
Type (modulation - internal mode)
If the modulation source is set to Internal , you can set the type of signal
waveform that is generated internally by the ACOUSTIK. Click the Type drop
down menu arrow and select either Sinusoidal , Triangle , Sawtooth or an Inverse
sawtooth waveform.
Figure 31 Internal generator waveform selection (Modulation Type)
Note: Selecting Sawtooth sets a sawtooth modulation signal with a rising ramp
such that the wavelength increases continuously until its maximum is achieved
leading to an instant drop in wavelength. The Inverse Sawtooth is a sawtooth
modulation signal with a falling ramp opposite to the Sawtooth modulation signal.
Coupling (modulation)
You can select to couple the modulation signal using either AC or DC coupling.
Click on the
Coupling drop down menu arrow and select either AC or DC
coupling. This setting is broadcast to and set on all inserted modules that include
the functionality.
Note: Refer to the BASIK module documentation for further information on the
Modulation Coupling setting of the module.
Range (modulation)
Sets the modulation Range to either Wide or Narrow on all modules inserted in
the system that support wavelength modulation.
Note: Refer to the BASIK module documentation for further information on the
Modulation Range setting of the module.