Owner`s manual

M SERIES DAC
CABLING
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13
11 TX- Output Transmit Data (-)
18 RX+ Input Receive Data (+)
25 RX- Input Receive Data (-)
The V71 RJ-45 port uses the following signals for current loop line interface with
active transmit and active receive:
DB-25 PIN/SIGNAL DEFINITION FOR CURRENT LOOP (ACTIVE TX ACTIVE RX)
Pin# Current Loop Signal Direction Description
7 GND ---- Ground
9 TX+ Output Transmit Data (+)
11 TX- Output Transmit Data (-)
18 RX- Input Receive Data (-)
19 RX+ Input Receive Data (+)
25 GND ---- Ground
The figures below show the basic active transmit circuit, the basic passive receive
circuit, and the basic active receive circuit.
Basic Active Transmit Circuit