Black Box CL512A-F User Manual page 9

CL512
2
3
6
7
DCE DTE
MODEM
(DCE)
Figure 3-2. Full-Duplex DTE Operation.
CL512
2
3
7
20
DCE DTE
COMPUTER
(DTE)
Figure 3-3. Full-Duplex DCE Operation.
MODULAR CURRENT LOOP ADAPTER
FULL-DUPLEX (4-WIRE)
1 TX+ RX+
2 TX- RX-
3 RX+ TX+
4 RX- TX-
FULL-DUPLEX (4-WIRE)
1 TX+
2 TX-
3 RX+
4 RX-
ASYNC COMPUTER
(ACTIVE CURRENT LOOP DEVICE)
RX+
RX-
TX+
TX-
ASYNC COMPUTER
(ACTIVE CURRENT LOOP DEVICE)
9