Custom Audio Electronics PLUS4, User Manual

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RS232/TTL SERIAL INTERFACE
Molex male connector 53261 series (90°)
J4
1 RT
2 TX
During transmission, oscillates between “0” and “1” depending on data
3 RX During reception, oscillates between “0” and “1” depending on data
4 GND
5 EXT-PUSH
6 EXT-LEDV
NOTES:
Given the presence of the RS232 standard, logic value “0” corresponds to a voltage level of b3Vdc and +15Vdc
and logic value “1” corresponds to a voltage level of between -3Vdc and -15Vdc .
DEVICE > PC connection
The following picture shows an example of connection between the device and a personal computer using a 9 pin RS232
serial connector:
DEVICE PC
DTR DTR
TX RX
RX
GND
FEED
LED
TX
GND
1
2
DB9
1
2
3
4
5
6
7
8
9
MOLEX 51021 6 pin female
1
2
3
4
5
6
When use a serial cable, we recommend the installation of a ferrite core on the power supply cable .
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