1
®
®
BLACK BOX
T h e W o r l d ’ s S o u r c e f o r C o n n e c t i v i t y
SM
© Copyright 1997. All rights reserved.
Black Box Corporation.
Uses your existing
twisted-pair cable.
Standalone unit or
rackmount card available.
Point-to-point or
multipoint.
2- or 4-wire half-duplex,
or 4-wire full-duplex
operation.
Diagnostic LEDs.
Speeds from 1.2 to 256
Kbps.
DB25 to V.35 adapter
included.
T
he V.35 Synchronous
Multipoint Line Driver
(MP485/35) gives you short-
haul synchronous data
transmission over your own
twisted-pair cable. The Line
Driver is available as a
standalone unit or a
rackmount card. The
rackmount version is
functionally identical to the
standalone unit. You can
install the Card in a
rackmount chassis that holds
up to 16 cards.
The Line Driver has a V.35
port (configured as DCE) that
connects to a host computer or
terminal (DTE), and a 4-screw
terminal block for RS-485
communication over 2- or
4-wire cable.
MP485/35
RTS CD TD RD PWR
DLB LLB TEST
The Line Driver works in point-to-point or multipoint
synchronous applications over two- or four-wire twisted-pair
cable.
Short-haul sync data
communication over
your own twisted-pair
cable is a breeze with
the V.35 Synchronous
Multipoint Line
Driver.
Typical Application
The Line Driver operates in
two- or four-wire half-duplex
mode, or four-wire full-duplex
mode. Baud rates are switch-
selectable, and range from
2400 to 256,000 bps.
LEDs on the Line Driver’s
front panel indicate flow
control (TX, RX, RTS, and CD)
and status (TD, RD, PWR).
And three pushbuttons (TST,
LLB, DLB) on the front panel
select line and digital loopback
tests.
Simply set the internal
switches or jumpers to
determine these
characteristics:
• Speed
Key Features
• Carrier: constant or
switched
• Operation: full- or half-
duplex
• TX data clock select
• Node termination
The Line Driver package
includes:
• Line Driver (standalone
with power supply or card
version)
• DB25 to V.35 Adapter
• User’s Manual
V.35 Synchronous Multiport Line Driver