Serial Interface - Custom Audio Electronics tg2480h User Manual

8 1
1 n.c.
2 GND
3 TX
4 RX
J15
5 RTS
6 n.c.
7 n.c.
8 n.c.
NOTES
DEVICE > PC connection
The following picture shows an example of connection between the device and a personal computer using an 8 pin
serial RJ45 male connector and a 9 pin female connector.
When use a serial cable, we recommend the installation of a ferrite core on the power supply cable.
Given the presence of the RS232 standard, logic value "0" corresponds to the voltage value +VRS232 (voltage value
between +3Vdc and +15Vdc) and logic value "1" corresponds to the voltage value -VRS232 (voltage value between
-3Vdc and -15Vdc.
28

SERIAL INTERFACE

Female RJ45 connector
(out) During transmission, takes the value -VRS232 and +VRS232, depending on data
(in) During reception, takes the value -VRS232 and +VRS232, depending on data
(out) When +VRS232, printer is ready to receive data
1
GND
2
TXD
3
RXD
4
RTS
5
6
7
8
DEVICE
1
RXD
2
TXD
3
4
GND
5
6
7
RTS
8
9
PC