lodestar®
MANUAL
REVISED 1/08/19
14 of 35
2.3.3
I/O Connections
There is a 9 pin D connector labeled ‘I/O’. This connector provides one trigger input and two trigger
output signals, as well as clock and data for an IIC serial connection.
The Trigger Input and Trigger output signals are 3.3V logic level signals.
The IIC Clock and Data signals are 3.3V logic level signals.
The Trigger and IIC Inputs and Outputs may be used by User Developed applications hosted on the
Lodestar unit. Please contact DG Technologies Tech Support for details if you wish to create your
own applications using the I/O signals.
The pin numbers of the I/O connector are shown in the table below.
Table 3
Input/Output Group
9 pin D
connector
I/O Group
pin #
Function
1
GND
2
Trigger Input
3
GND
4
Trigger Out #2
5
GND
6
Trigger Out #1
7
IIC clock SCL
8
no connect
9
IIC Data SDA
