CTC Union FMUX-01, User Manual

Page: 19 / 59

Chapter 2. Port Card Overview
2-3
FMUX-01Mar 2003
When the
MULTIPLEXER UNIT
is ordered with an V35 Port Card option, a 4-
CHANNEL V.35 Card and adapter cable are supplied with each MB34 wired according to
the following table.
Signal
Function
MB34
PIN#
V.35
Circuit
Direction Description
Frame
Ground
A Frame
↔
Chassis ground.
May be isolated from signal ground.
Signal
Ground
B Signal Ground
↔
Common signal ground.
Transmit
Data P
S TD(A)
TD(B)
To MUX UNIT
Serial digital data from DTE.
Receive
Data R
T
RD(A)
RD(B) Fm. MUX
UNIT
Serial digital data at the output of the
MULTIPLEXER UNIT receiver.
Request
To Send
C RTS To MUX UNIT
A ON signal to the MULTIPLEXER UNIT when
data transmission is desired.
Clear
To Send
D CTS
Fm. MUX
UNIT
Constantly ON.
Data Set
Ready
E DSR
Fm. MUX
UNIT
Constantly ON,
Except during test loops.
Data Terminal
Ready
H DTR To MUX UNIT
DTR not used, used for a received serial data
rate clock input from the DTE.
Data Carrier
Detect
F DCD
Fm. MUX
UNIT
Constantly ON, except when a loss of the
received carrier signal is detected.
External
Transmit Clock U
W
ETC(A)
ETC(B)
To MUX UNIT
A transmitted data rate clock input from the
data source.
Transmit
Clock Y
AA
TC(A)
TC(B) Fm. MUX
UNIT
A transmitted data rate clock for use by an
external data source.
Receive
Clock V
X RC(A)
RC(B) Fm. MUX
UNIT
A received data rate clock for use by an
external data source.
Remote
Loopback
HH RL To MUX UNIT
When on, commands MULTIPLEXER UNIT
into remote loop back.
Local
Loopback
JJ LL To MUX UNIT
When on, commands MULTIPLEXER UNIT
into local loop back.
Test Indicator
KK TM
Fm. MUX
UNIT
ON during any test mode
Table 2-2 : MB34 cable pin out for V.35