
Quantum SBC User Manual Rev A
www.diamondsystems.com
Page 17
6.10
LCD Backlight (J3, J24)
Connector J3 provides the backlight power for LCD Channel A Connector. J24 provides the backlight power for
LCD Channel B and control for an optional LCD panel. Diamond Systems
’ cable part number 6981210 mates with
this connector.
J3, LCD Backlight Channel A
1
LCD A Power
2
LCD A Power
3
Ground
4
Ground
5
Enable (GPIO output), 0 = off, open circuit = on
6
Brightness, 0-5VDC variable; 0V = max, 5V = min
J24, LCD Backlight Channel B
1
LCD B Power
2
LCD B Power
3
Ground
4
Ground
5
Enable (GPIO output), 0 = off, open circuit = on
6
Brightness, 0-5VDC variable; 0V = max, 5V = min
The LCD power is jumper selectable for +5V or +12V. See the description for JP3.
The enable signal controls power to the backlight. It is controlled by digital I/O signal.
Connector Part Numbers:
Molex 53398-0671
6.11
Data Acquisition (J14)
Connector J14 provides 10 digital I/O lines from PIC controller. These lines have ESD protection to protect the
SBC from potential damage. The connector also provides four analog input channels and four pulse width
modulator outputs. Diamond Systems
’ cable part number 6980501 mates with this connector.
DIO 0
1
2
DIO 1
DIO 2
3
4
DIO 3
DIO 4
5
6
DIO 5
DIO 6
7
8
DIO 7
DIO 8
9
10
DIO 9
PWM 1A
11
12
PWM 1B
PWM 1C
13
14
PWM 1D
Ground
15
16
Agnd
AN0
17
18
AN1
AN2
19
20
AN3
Signal
Definition
DIO 0-9
Digital I/Os
PWM 1A:1D
PWM outs
AN 0:3
Analog inputs
Ground
Digital ground
Agnd
Analog ground
Connector type:
Standard 2mm dual row straight pin header with gold flash plating
Connector:
JST BM20B-GHDS-G-TF 2x10 straight 1.25mm pitch gold