Campbell COM200A, Instruction Manual, Page: 8 / 22

COM200A TELEPHONE MODEM
4
TIP
RING
GND
12V
G
CAMPBELL
SCIENTIFIC
INC.
CR10
MADE IN USA
WIRING PANEL NO.
EARTH
DIFF
SE
AG H L AG H L AG H L AG G G E3 AG
4 5 6
7 8 9 10 11 12
G G G G
12V 12V
SWITCHED
12V
G 12V
POWER
IN
SERIAL I/O
SE
DIFF AG H L AG H L AG H L AG G G E1 E2
1 2 3
1 2 3 4 5 6
G 5V 5V P1 P2 C8 C7 C6 C5 C4 C3 C2 C1
CONTROL
12V
SWITCHED
To Earth
Ground
14 AWG Ground Wire
SC12 Cable
Telephone Wall
Jack
Red
Black
(Ground)
(+12v)
CAMPBELL
SCIENTIFIC
AUSTRALIA
PTY. LTD.
COM200A M
ODEM
S/N 0002
MADE IN U
SA
REN = 0.5
FIGURE 3. CR10X with CR10 Wiring Panel and COM200A Using RJ11C Telephone Jack