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COM300 Voice Communication Modem
5
TIP
R
IN
G
GND
C
AM
PBE
LL
SCIENTIFIC
INC.
M
A
D
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IN
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/N
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9
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S
A
-3
1
4
0
2
-M
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-T
Ringer Equivalence 0.5A.Required Connector USOC RJ11C.
This equipment complies with the requirements in Part 15 of FCC Rules for Class A
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hatever ste
ps are necessary to correct the interference
.
C
O
M
3
0
0
VOICE SYNTHESIZER
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 GGE3 AG
4 5 6
78 910 1112
GGGG
12V 12V
SWITCHED
12V
G12V
POWER
IN
SERIAL I/O
SE
DIFF
AG H L AG H L AG H L AG GGE1 E2
1 2 3
12 34 56
G 5V5VP1P2 C8C7C6C5C4C3C2 C1
CONTROL
12V
SWITCHED
To Earth
Ground
14 AWG Ground Wire
SC12 Cable
Telephone Wall
Jack
Red
Black
(Ground)
(+12v)
FIGURE 4. Providing Alternate Power to the COM300
TABLE 1. Dataloggers that Require Direct
12 VDC Connection to COM300
CR10(X) w/ silver wiring panel
CR10(X) w/ black CR10 wiring panel (P/N 8032)
CR500serial number 1764 or lower
3.4 Telephone Service
The goal of the telephone company is to provide you with the best service it
can. In order to do this, it may occasionally be necessary for them to make
changes in their equipment, operations, or procedures. If you have any
questions about your telephone line, such as how many pieces of equipment
you can connect to it, the telephone company will provide this information
upon request. If the telephone company requests information concerning the
equipment which you have connected to your telephone line, the FCC
registration number and the ringer equivalence number (REN) of the COM300