WaveWare CommTech MaxPage - Manual (Page 16)

MAXPage Manual
Page 16 © Commtech Wireless
RS232 Serial Port
To interface the MAXPage with a third party paging system that is outputting the
TAP, COMP or SCOPE protocols, use the female DB9 on the rear of the MAXPage
unit.
1. The pin-outs for this serial connector on MAXPage are shown below:
2. When connecting the device to an IBM PC with the MAXPage Windows® software
installed, a straight through cable is used. See the Windows® MAXPage Software section
for more information regarding this.
3. Depending on the type of third party paging system you are connecting to you may need
either :
• A straight through cable where each pin is wired straight through with TX-TX,
RX-RX and so on.
• A null modem crossover cable that has all pins wired straight through except for
the transmit and receive lines which are crossed (TX-RX and RX-TX).
The section below explains how to make each type of cable if required. Alternatively they
can be purchased at a local computer or electronics store.
Abbreviation Signal DB9 Female
TXD Transmit data 2
RXD Receive data 3
GND Ground 5
RTS
Request to send 7
CTS Clear to send 8
Front View