Part Xxviii Appendix B: Db25 Wiring - Tieline Merlin PLUS User Manual

320 Merlin PLUS User Manual v2.0
RS232 Pin-outs and Data Connections
Important Notes:
·
It is important that you enable serial port flow control within the codec. Flow control
regulates the flow of data through the serial port. If disabled, data will flow unregulated
and some may be lost.
·
Ensure you match the serial port baud rate to match the rate of the external device you
are connecting to. Ideally the settings on both codecs should match, or you could have
data overflow issues.
·
Only the dialing codec needs to be programmed to send RS232 data. Session data sent
from the dialing codec will program all other compatible codecs (non-G3) when you
connect.
28 Appendix B: DB25 Wiring
DB25 Audio Expansion Pin Outs
In the following images:
·
G = Ground
·
C = Cold
·
H = Hot
Pin INTERFACE Female
DB9 (RS232) DCE
1 No Connection
2 TX Data
3 RX Data
4 No connection
5 Signal Ground
6 No Connection
7 CTS
8 RTS
9 No connection
DB9 Male
Connector Pins
DATA Male DB9
(RS232) DTE
No connection
RX Data
TX Data
No connection
Signal Ground
No connection
RTS
CTS
No connection
DB9 Female
Connector Pins
© Tieline Pty. Ltd. 2017