User Manual

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ACB-ULTRA.LPCI User Manual

V.35 Signals

Base+5, M3-M0=E, 1110

Signal Name DB-

V.3

Mode

GND Ground 7 B

RDB RX+ Receive Positive 16 T Input

RDA RX- Receive Negative 3 R Input

TXCB TXC+ Transmit Clock Positive 12 AA Input

TXCA TXC- Transmit Clock Negative 15 Y Input

RXCB RXC+ Receive Clock Positive 9 X Input

RXCA RXC- Receive Clock Negative 17 V Input

TDB TX+ Transmit Positive 14 S Output

TDA TX- Transmit Negative 2 P Output

TSETB TSET+ Transmit Signal Element Timing + 11 W Output

TSETA TSET- Transmit Signal Element Timing - 24 U Output

CTS Clear To Send 5 D Input *

DSR Data Set Ready 6 E Input *

DCD Data Carrier Detect 8 F Input *

RI Ring Indicator 22 J Input *

DTR Data Terminal Ready 20 H Output *

RTS Request To Send 4 C Output *

LL Local Loop-back 18 Output *

RL Remote Loop-back 21 Output *

• Note: All modem control signals are single ended (un-balanced) with RS-232

signal levels.

Technical Note: Please terminate any control signals that are not going to be used.

The most common way to do this is connect RTS to CTS and RI. Also, connect DCD

to DTR and DSR. Terminating these pins, if not used, will help insure you get the

best performance from your adapter.