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Chapter 2
Operation
Overview
The DH-mini Light Source includes both a deuterium and a halogen bulb for UV-VIS-NIR
measurements. There are two ways to control the DH-mini: using the push buttons on the front panel or
the TTL inputs on the rear panel. After power-on the Power LED will glow and the device will be in TTL
control mode which is highlighted by the yellow TTL/ Manual LED.
Operating Modes
To toggle between Manual Mode and TTL Mode you have to push the TTL/Manual button on the front
panel. The corresponding yellow LED next to the button toggles on and off with each push. A lit LED
indicates TTL Mode. If the LED is off, the device is in Manual Mode.
Manual mode
–
operates with the pushbuttons on the front panel
TTL mode
–
operates with the TTL inputs on the rear panel.
