Specifications

COM220 Telephone Modem
TABLE 1. Dataloggers that Require Direct
12 VDC Connection to COM220
CR10(X) with silver wiring panel
CR10(X) with 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
SE
12 34 56 78
H
1234
L
DIFF
H
EX1
HLHLL
P2
P1
12VG
DC ONLY
CAUTION
LUG
GROUND
POWER IN
WIRING PANEL
CR1000
PERIPHERAL PORT
RS-232 (Not Isolated)
SN:
CS I/O
MADE IN USA
11
109
SE
15 1613
1412
H
L
DIFF
H
EX2
HLHLL
EX3
5678
SW-12
5V 12V 12V
C5 C4 G G G G C1 C2 C3 G G
C6 C7 C8
Tx
COM1
Rx Tx Rx Tx Rx Tx Rx
COM2 COM3 COM4
POWER OUT
SDM
G 12V
Burial Phone Cable
Blue = Ring
Blue/White = Tip
Phone Line
Transient Protector
(Model 6362 or 2372-01)
SC12 Cable
Earth
Ground
FIGURE 3. CR1000 and COM220 Using Remote Telephone Line
4