Black Box ME521A User Manual
Black Box ME521A User Manual

Black Box ME521A User Manual

V.35 synchronous multiport line driver

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BLACK BOX
®
© Copyright 1997. All rights reserved.
Black Box Corporation.
V.35 Synchronous Multiport Line Driver

Key Features

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.
1
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
M P 4 8 5 /3 5
D L B L L B
he V.35 Synchronous
T
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.
P W R
D R D
R T S C D T
T E S T
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

Typical Application

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.
• 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
®
SM

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Summary of Contents for Black Box ME521A

  • Page 1 © Copyright 1997. All rights reserved. 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 Black Box Corporation. V.35 Synchronous Multiport Line Driver...
  • Page 2: Ordering Information

    They’ll help you find the best equipment for your application. Ordering Information This information will help you place your order quickly. PRODUCT NAME V.35 Synchronous Multipoint Line Driver (MP485/35) Standalone, 115 VAC ...ME521A Standalone, 230 VAC...ME521AE Rackmount Card ...ME521C Multifunction Rack (16-Card)...RM005 V.35 Interface Cable...EYN450-0010 IBM 3274...

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