IBM H8 user manual Jumpers and switches, JP4, D/A CON

HTEB1

User manual

1.5 Jumpers and switches

JP1 is used for switching the serial interface from 1:1 to crossed connection. If you connect a 1:1 cable (like the cable that comes with the kit) use the default setting. If you connect a crossed cable set the jumper to alternate setting.

JP3 is used for the LCD-LED backlight. If the jumper is closed (1-2) the backlight will be ON. Remove the jumper (=open) if backlight operation is not necessary.

JP2 is used for I2C interface

JP4 is used as an output for the DAC or for PWM

JP1	Operation
1-3, 2-4	1:1 operation
1-2, 3-4	Crossed connection
JP3	Operation
Closed	LED backlight ON
Open	LED backlight OFF
JP2, I2C-CON	Operation
1	+5V
2	SDA
3	SCL
4	GND
JP4, D/A CON	Operation
1	D/A Output (PWM)
2	GND

Issue 0.2 Page 7 07/2002