2. Mod Input #2 PWM
Modulation Input #2 accepts PWM signals whose voltage in the high state (interpreted
as laser on) should be a minimum of 3 V. Examples of compatible control signal ranges
are: 0 - 5 V, 0 - 10 V and 0 - 24 V.
In the case of PWM control, we recommend using a frequency of base frequency of
5,000 - 10,000 Hz. Although frequencies such as 1,000 Hz will also work, higher
frequencies usually produce better greyscale images. The signal fill percentage
corresponds to the laser power output percentage.
NB: Do not connect signal cables simultaneously to the Mod Input #1 ANG pin and Mod
Input #2 PWM.
NB2: Mod Input #1 ANG and Mod Input #2 PWM pins share a common ground in the
form of pin #3 (Mod Input GND).
NB3: For the voltage to be interpreted as a high state (laser on) it should be a minimum
of 3.0 V. Conversely, for it to be interpreted as a low state (laser off), it should not
exceed 1.0 V. The state between 1-3 V is not defined.
3. Mod Input GND
This is the ground (GND) common to the Mod Input #1 ANG and Mod Input #2 PWM
pins.
4. GND
This is the ground (GND), for the laser head’s power supply (Vcc pin).
5. Vcc
This is the power supply (Vcc) to the laser head, which should be (for XF+ and
XT-Series laser heads) in the 12-24 V range. At a 12 V power supply, the current should
be a minimum of 2.5 A, and with a 24 V power supply, it should be ≥ 1.25 A.
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