Black Box ME480A-R2, ME485A, ME485AE, ME485A-D48 Specifications

1

Operate point-to-point
over one or two UTPs.

Distances up to

10.1 miles for 2-wire
models and 11.1 miles
for 4-wire models.

Modular DCE-DTE
interface cards for
RS-232, RS-422/530,
V.35, X.21, and G.703
connections.

2-wire card version
available for use in
our MicroRACK.

Use WAN Bridge
Module with 4-wire
driver to link LANs.

Configurable via DIP
switches and terminal
connection.

LEDs indicate DTE
signals, network links,
and test modes.

W

i

th their support for high data

rates, long distances, and
multiple interfaces, the BLACK
BOX

®

2-Wire and 4-Wire Modular
Campus Drivers provide a number
of point-to-point communication
solutions. Whether your task is
connecting two LANs over private
campus or leased lines, extending
a 64-kbps G.703 link, performing
G.703 extension and interface
conversion, or transferring high­speed data, these drivers can do
it all.

The Modular Campus Drivers
give you communication over
either a single twisted pair (with
the 2-wire models) or two twisted
pairs (with the 4-wire versions).
Offering a variety of switch­selectable synchronous data rates
(and asynchronous data rates for
the 2-wire models), the drivers are
great for connecting two bridges
or routers, or for similar campus
networking applications at
distances up to 10.1 miles (for
the 2-wire models) or 11.1 miles
(for the 4-wire model).

One of the Modular Campus
Driver’s unique features is the

Key Features

2-WIRE/4-WIRE MODULAR CAMPUS DRIVERS

quick-change, plug-in DCE-to-DTE
Interface Card. Several different
models are available to provide
connection to a variety of popular
terminal interfaces: G.703, V.35,
X.21, RS-422/-530, and RS-232.
Each card has a 50-pin card-edge
connector on one side and a serial
port interface on the other. Use the
Modular Campus Driver’s rear RJ­45 jack to connect the twisted-pair
line.

The 2-Wire Modular Campus
Drivers feature a V.52 bit-error­rate-test (BERT) pattern generator
and incorporate local line loopback
(LLB) and remote digital loopback
(RDL) test modes.

The LLB test checks the
operation of the local driver and
is performed separately on each
unit. Any data sent to the local
driver in this test mode will be
echoed (returned) back to the user
device. For example, characters
typed on the keyboard of a terminal
will appear on the terminal screen.

The RDL test checks the
performance of both the local
and remote Modular Campus
Drivers and the communication

link between them. Any characters
sent to the remote driver in this test
mode will be returned back to the
originating device. For example,
characters typed on the keyboard
of the local terminal will appear on
the local terminal screen after
having been passed to the remote
driver and looped back.

For extended distances, the
2-Wire Modular Campus Drivers
use automatic equalization, gain
control, and echo cancellation.
Data integrity is enhanced by
transformer isolation and surge
protection.

We also offer a BLACK BOX

®

MicroRACK version of the 2-Wire
V.35 Modular Campus Driver
(ME485C-35/B). Supporting one
DTE interface connection and
one 2-wire line connection, this
economical card fits into and
draws its power from the 2U-high
MicroRACK chassis, which
mounts cards in a midplane
architecture. The module consists
of a front card and a rear card.
Both meet inside the rack chassis
and plug into each other by way
of 50-pin card-edge connectors.

Black Box Corporation • 1000 Park Drive • Lawrence, PA 15055-1018 • Tech Support: 724-746-5500 • www.blackbox.com • e-mail: [e-mail]

© 2003. All rights reserved.

Black Box Corporation.

11/20/2003 #18203

The perfect drivers for high-speed leased-

line Internet links, LAN interconnection,

or campus networking.

2

Approvals: CE, UL®, cUL

Clocking: Internal, external, receive

Data Rates: ME480A-R2: 48, 56,

64, 72, 80, 112, 128, 144, or
160 kbps (switch-selectable);

ME485A, ME485AE, ME485A-D48,

ME485C-35/B: 32, 56, 64, or
128 kbps synchronous
(switch-selectable), or 0 to

38.4 kbps asynchronous

Distance: See above right

Carrier Control: Constantly On or

Controlled By RTS

Diagnostics: ME480A-R2:

V.52-compliant bit-error-rate
pattern (511/511E pattern)
generator and detector with
error injection mode; V.54­compliant; local analog
loopback, digital loopback,
remote digital loopback;

ME485A, ME485AE, ME485A-D48,

ME485C-35/B: Local analog
loopback, remote digital
loopback; V.52-compliant
bit-error-rate pattern
(511/511E pattern) generator
and detector with error
injection mode

Line Encoding: ME485A, ME485AE,

ME485A-D48, ME485C-35/B: 2B1Q
with Integrated Echo Cancellation

RTS/CTS Delay: No delay, short delay

(4 to 9 ms), or long delay (33 to
71 ms)

Speed (Maximum):

ME480A-R2: 160 kbps;
ME485A, ME485AE, ME485A-D48,

ME485C-35/B: Async: 38.4 kbps;
Sync: 128 kbps;

Transmission Format:

ME480A-R2: Sync;
ME485A, ME485AE, ME485A-D48,

ME485C-35/B: Async or sync

Specifications

Data Rate

Wire Gauge (miles/kilometers)

(kbps) 19 22 24 26

128 10.1 (16.3) 6.4 (10.3) 4.5 (7.2) 3.4 (5.5)

64 10.1 (16.3) 6.4 (10.3) 4.5 (7.2) 3.4 (5.5)

56 10.1 (16.3) 6.4 (10.3) 4.5 (7.2) 3.4 (5.5)

32 10.1 (16.3) 6.4 (10.3) 4.5 (7.2) 3.4 (5.5)

0 to 38.4 10.1 (16.3) 6.4 (10.3) 4.5 (7.2) 3.4 (5.5)

Data Rate

Wire Gauge (miles/kilometers)

(kbps) 19 22 24 26

160 8.1 (13) 5.9 (9.5) 4.1 (6.6) 3 (4.8)

144 8.5 (13.7) 6.1 (9.8) 4.4 (7.1) 3.1 (5)

128 9 (14.5) 6.2 (10) 4.6 (7.4) 3.2 (5.2)

112 9.2 (14.8) 6.3 (10.1) 4.8 (7.7) 3.2 (5.2)

80 9.2 (14.8) 6.4 (10.3) 5.2 (8.4) 3.2 (5.2)

72 10.8 (17.4) 6.6 (10.6) 5.5 (8.9) 3.4 (5.5)

64 11 (17.7) 6.8 (10.9) 5.5 (8.9) 3.4 (5.5)

56 11.1 (17.9) 6.8 (10.9) 5.5 (8.9) 3.4 (5.5)

48 10.8 (17.4) 6.6 (10.6) 5.4 (8.7) 3.3 (5.3)

ME485A and ME485C-35/B (2-Wire) Distance Table

ME480A-R2 (4-Wire) Distance Table

For more information on the
MicroRACK, request Product Data
Sheet 12915 or call Black Box
Tech Support.

The 4-Wire Modular Campus
Driver boasts built-in V.54 loopback
tests (which can be activated from
the front panel or the terminal
interface), and a V.52 BERT pattern
generator. Automatic equalization
and gain control enhance data
integrity. The line driver also
features transformer isolation for
protection against ground loops, as
well as Silicon Avalanche Diodes
to guard data and connected
equipment against transient
surges.

For the 4-Wire Modular
Campus Driver, we also offer a
WAN Bridge Module. This card,
with its modular 10BASE-T
connector, enables you to link two
peer Ethernet LANs. Supporting
transparent operation to higher­level protocols (such as TCP/IP
and NetBIOS), the bridge module
requires no configuration—it
automatically discovers, loads,
and deletes MAC addresses using
its 512-MB onboard RAM.

For both 2- and 4-wire models,
synchronous clocking options

TD
RD
CTS
CD
NS
ER

LLB

511ER

RDL

511

DTR

TM

Transmission Line: Unconditioned

twisted pair or Local Area Data
Circuits (LADS), 19 to 26 AWG;
DC continuity not required

Interface: ME485A, ME485AE,

ME485A-D48, ME480A-R2:

RS-232, RS-422/530, V.35,
X.21, or G.703 depending on
interface card;

ME485C-35/B: V.35

Connectors: All standalone units:

(1) RJ-45 control, (1) RJ-45 line;

ME481C-232, ME481C-422:

(1) DB25 F, (1) card-edge;

ME481C-35, ME485C-35/B:

(1) M/34 F, (1) card-edge;

ME481C-X.21: (1) DB15 F,

(1) card-edge;

ME481C-G703, ME530A: (1) RJ-45,

(1) card-edge

Temperature Tolerance: Operating:

32 to 113°F (0 to 45°C)

Humidity Tolerance: 5 to 95%,

noncondensing

Power: ME485A: 115 VAC, 60 Hz;

ME485AE: 230 VAC, 50 Hz;
ME485A-D48: 48 VDC, 5 watts;
ME480A-R2: 115/230 VAC,

50/60 Hz, switchable;

ME485C-35/B: From the

MicroRACK

Surge Protection: 600W power

dissipation at 1 ms

Size: All standalone units:

7.3"H x 6.6"W x 1.6"D
(18.5 x 16.8 x 4.1 cm);

ME485C-35/B:

Front card: 4.8"H x 3.1"W x 0.95"D

(12.2 x 7.9 x 2.4 cm);

Rear card: 3.3"H x 2.8"W x 0.95"D

(8.4 x 7.1 x 2.4 cm)

Weight: All standalone units:

2 lb. (0.9 kg);

ME485C-35/B:

Front card: 0.22 lb. (0.1 kg);
Rear card: 0.12 lb. (0.05 kg)

include internal, external, and
receive recovered clock. And
configuration is made easier by
two sets of eight externally
accessible DIP switches. An RJ-45
(RS-232) control port on the driver‘s
front enables you to use a menu­driven commands to configure the
unit and initiate diagnostic tests via
a VT100™ terminal or similar RS­232 DTE with terminal emulation.
Once properly configured and
installed, the drivers operate
transparently.

MicroRACK
2-Wire V.35

Modular
Campus Driver
(ME485C-35/B)