Black box, 2 of 2 – Black Box ME657A-M User Manual
Page 2
BLACK BOX
®
2 of 2
12/14/2010
#13727
»
Speeds up to 38.4 kbps.
»
Distances up to 6 miles (9.7 km).
»
Async or sync operation, point-to-point
or multipoint.
»
Transformer isolation and surge protection.
FeaTUReS
Operating asynchronously or synchronously, the
Multi-Function
Line Driver
supports data rates up to 38.4 kbps and distances up to
6 miles (9.7 km).
The line driver will operate over 4 wires in point-to-point or
multipoint environments. In synchronous mode, the
Multi-Function
Line Driver
supports internal, external, or receive loopback clocking.
Two V.54 and two V.52 BER test modes can be activated via the
RS-232 interface. Built-in LEDs let you monitor test mode operation.
With transformer isolation and surge protection, your data is safe.
The
Multi-Function Line Driver
is designed to plug directly into
the RS-232 interface. Twisted-pair wire is connected using an RJ-45
connector or terminal blocks with strain relief.
OVERVIEW
T e c h S P e c S
Clocking — Internal, external, receive
Distance (Maximum) — 6 mi. (9.7 km)
Speed (Maximum) — 38.4 kbps
Line Type — (2) twisted pair
Operation — 4-wire, full duplex, point-to-point, or multipoint
Protocol — Asynchronous or synchronous
Interface — RS-232 (DCE)
Connectors — ME657A-F: (1) DB25 F, (1) terminal block;
ME659A-F: (1) DB25 F, (1) RJ-45
Indicators — BERT, Loop
Power — 6 VDC from the interface, Pins 4, 9, 20
Size — 0.8"H x 2.1"W x 3"D (2 x 5.3 x 7.6 cm)
Weight — 0.1 lb. (<0.1 kg)
Item
Code
Multi-Function Line Driver
DB25 Male, Terminal Block
Me657a-M
DB25 Female, Terminal Block
Me657a-F
DB25 Female, RJ-45
Me659a-F
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