Vt-Modem-4 Power, Phone Line Connections; Dc Power; Telephone Cable - red lion Sixnet VT-MODEM-4 Hardware Manual

Revised 2018-12-10
Drawing No. LP1087-A
2.2.4 VT‐MODEM‐4 Power, Phone Line Connections
2.2.4.1 DC POWER
Connect 10 - 30 VDC to the VT-MODEM-4 as shown in the image in the section below. The modem can usually be
powered from the same DC source as other devices in the enclosure. All the screw terminals should be tightened to a
maximum of 3.48 in-lbs.
2.2.4.2 Telephone Cable
Connect analog phone lines to the RJ-11 jacks as appropriate. One RJ-11 jack is provided to connect directly to a
telephone (optional) and the second RJ-11 jack functions as the connection to the telephone network.
2-8
Pin
10-30 VDC
Input
1 2 3
10-30 VDC
CD
TR
RD
TD
Power
VT-MODEM
Modem
RS232 Port
Signal
1 DCD out
2 RD out
3 TD in
4
DTR in
5 Sig GND
To Telephone
6 DSR out
7 RTS in
8 CTS out
9
RI out
GND DTR TD RD DCD
5 4 3 2 1
Phone
9 8 7 6
RI CTS RTS DSR
INDUSTRIAL MODEM
SIXNET
Hardware Installation
Electrical Connections
To Line
Line
Made in USA
VT-MODEM-4 Hardware Guide