Device User’s Guide
3. System Configuration
9
I/O Port Pin
The Pin number of the I/O port for the spectrometer controlling is showing below:
Pin No.
Signal
Definition
Function
1
Power
5V Output
When connecting to the PC's USB port, this pin is connected to
VBUS. Up to 100 mA current
2
No connection
3
No connection
4
Output
Shutter
Shutter ON/OFF
5
Output
D2_ON
D2 light source ON/OFF
6
Output
HAL_ON
Halogen light source ON/OFF
7
Input
Trigger-IN
TTL
8
GND
GND
Ground
Figure 3-3: SEC2021 Spectrometer Port Pin number
