Campbell Scientific COM200 Telephone Modem - Manual (Page 27)

F-1
Appendix F. The 10704 12 V Adaptor
COM200s prior to serial number 2334 require a part number 10704 adaptor to
connect 12 volts directly to the modem.
The 10704 adaptor is used between the SC12 cable and the datalogger (Figure
F-1). Table F-1 lists the Campbell Scientific dataloggers that do not supply 12
VDC on the 9 pin connector and hence require a direct 12 VDC connection to
the COM200. When using the 10704 adaptor, the red and black wires should
be connected to 12 V and Ground, respectively. The female connector of the
10704 should be connected to the COM200 while the male connector goes to
the datalogger.
Table F-1. Dataloggers that Require
Direct 12 VDC Connection to COM200
CR10(X) w/ silver wiring panel
CR10(X) w/ black CR10 wiring panel (P/N 8032)
21X(L)—serial number 13,442 or lower
CR500

serial number 1764 or lower
CR7—700X serial number 2778 or lower
BDR301 and BDR320
F
1
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
TIP RING GND
CAMPBELL
SCIENTIFIC
INC. COM200 MODEM
MADE IN USA
S/N 1002
Complies with P art 68, FCC rules . FCC Registra tion No. B9QUS A-75378-MM-T
Ringer Equivalen ce 0.6B.Require d Connector US OC RJ11C. Can adian Load No. 5
This equipment complies with th e requirements in Part 15 of FC C Rules for Cla ss A
computing device. Operation of this equepment in a residential area m
ay cause
unacceptable interference to radio and TV reception requiring the operator to take
whatever step
s are nece ssary to co rrect the interfere nce.
To Earth
Ground
14 AWG Ground Wire
SC12 Cable
Telephone Wall
Jack
Red
Black
(Ground)
(+12v)
10704 Adaptor
FIGURE F-1. CR10X with CR10 Wiring Panel and COM200 Using
RJ11C Telephone Jack