NKT Photonics Koheras ADJUSTIK, Product Manual

Page: 68 / 105

CONTROL settings
68
Figure 38 GUI settings
Wavelength
modulation
The wavelength of the laser can be modulated using either the laser’s internal
function generator or an external signal. From the Settings (gear) drop-down
menu select Wavelength modulation . Depending on the modulation source
selected, Figure 39 to Figure 40 show the Wavelength modulation menus.
Within these menus you can configure multiple parameters that affect the
modulation functionality.
Note: The Settings - Wavelength modulation menu item is only available if the la -
ser includes the wavelength modulation feature.
Modulation Source
The source signal used to modulate the wavelength is selectable. Click on the
Source drop-down menu to select one of three source modes:
•
Internal ( Figure 39 ) – wavelength is modulated using the laser’s internal
function generator
•
External ( Figure 40 ) – wavelength is modulated by connecting an external
signal to the Wav- pins.
You can connect an external signal to either the ADJUSTIK interface board
connectors as described in “Connecting modulation signals” on page 85 or
directly to the main electrical interface pins. The pin assignments are described
in Table 18 on page 97 . For information regarding example signal generation
circuits, refer to section “Fast wavelength modulation” on page 33
Setting Item Function See
Wavelength
modulation
Toggles the mode of the laser between power
and current mode.
Wavelength modulation on
page 68
Power/current
mode
Check box to toggle Auto-start on or off. Power/Current mode on
page 71
Ethernet Sets the IP configuration of the laser’s Ethernet
port.
Ethernet on page 72
Watchdog Enables and sets the watchdog timeout. Watchdog on page 72
Clock Sets the laser’s clock time. Clock on page 73
View Menu with a check box to enable displaying the
System Information on the status panel.
View on page 74
Click the gear icon
to access the menu