THORLABS K-Cube KLC101, Руководство пользователя, Страница: 17 / 28

K-Cube
™ Liquid Crystal Controller
Chapter 4: Standalone Operation
Page 12 CTN014867-D02
4.1.5. Menu Option
– Trigger Mode
The K-Cube liquid crystal controller has two bidirectional trigger ports (TRIG1 and TRIG2) that can be used to
read an external logic signal or output a logic level to control external equipment. Electrically, the ports output
5 V logic signals and are designed to be driven from a 5 V logic.
When the port is used on input mode, the logic levels are TTL compatible, i.e. a voltage level less than 0.8 V
will be recognized as a logic LOW and a voltage level greater than 2.4 V will be recognized as a logic HIGH.
The input contains a weak pull-up, so the state of the input with nothing connected will default to a logic HIGH.
When the input signal is at a high level, the output voltage will select PresetV2, otherwise it will select PresetV1.
When the port is used as an output it provides a push-pull drive of 5 V, with the maximum current limited to
approximately 8 mA. The current limit prevents damage when the output is accidentally shorted to ground or
driven to the opposite logic state by external circuitry. When
“Switching mode” is enabled, the Trig Port will
output the Switching frequency level. A high level indicates current output PresetV2, while a low level indicates
current output PresetV1.
Caution
Do not drive the TRIG ports from any voltage source that can produce an output in excess of
the normal 0 to 5 V logic level range. In any case the voltage at the TRIG ports must be limited
to -0.25 to +5.25 V.
Press the MENU button then use the wheel to scroll
to 4 Trigger Mode to set the Trigger state. Press the MENU button to enter.
Use the wheel to set both Trig 1 and Trig 2 as output.
Press the MENU button to store the setting and return.
Use the wheel to set Trig 1 as input and Trig 2 as output.
Press the MENU button to store the setting and return.
Use the wheel to set Trig 1 as output and Trig 2 as input.
Press the MENU button to store the setting and return.
4.1.6. Menu Option
– Wheel lock
Press the MENU button then use the wheel to scroll to option 5 to set the Wheel status. When the Wheel is
locked, the user can not change the output voltage value in the start menu directly. In certain applications, it
may be advantageous to disable the wheel to remove the possibility of any unwanted disturbances due to
accidental movement of the wheel.
Press the MENU button then use the wheel to scroll
to 5 Wheel Lock. Press the MENU button to enter.
Use the wheel to select the wheel state.
Press the MENU button to store the setting and return.
Menu options
4 Trigger mode
Trig 1-OUT 2-OUT
to change
Trig 1-IN 2-OUT
to change
Trig 1-OUT 2-IN
to change
TRIG1 In Mode
N ----Hz
TRIG2 In Mode
N ----Hz
Menu options
5 Wheel lock
Wheel unlocked
to change
Wheel locked
to change
Output inactive
N ----Hz
Output inactive
N ----Hz