Impulse 5104 User Manual
Page 13
© Sealevel Systems, Inc.
- 11 -
ACB-ULTRA.LPCI User Manual
V.35 Signals
Base+5, M3-M0=E, 1110
Signal
Name
DB-
25
V.3
5
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.