The Universal Sync/Async Short-Haul Modem gives you the flexibility to use it in almost any UTP or STP application. It's non-powered to you can use it almost anywhere without worrying about power. It provides data rates up to 38.4 Kbps and distances up to 19.3 km. In synchronous mode, the SHM supports internal, external, or receive loopback clocking.
The SHM incorporates two V.54 and two V.52 BER test modes, which can be activated via the RS-232 interface. Monitor test mode operation via the built-in LEDs. The SHM also has transformer isolation and surge protection to guard against data loss. It's designed to plug directly into the RS-232 interface. The UTP or STP cable is connected via RJ-11, RJ-45, or a terminal block.
Approvals —CE
Carrier— Constantly ON or controlled by RTS
Clocking—Internal, external, receive
Connectors—
ME659A-F-R2: DB25 F
Both: RJ-11 jack, terminal block
Diagnostics—
100% V.54 compliant;
100% V.52 compliant BER tests
Distance—19.3 km
Indicators—BERT, Loop/Test
Interface—RS-232
Isolation—Transformer, 1500V RMS
Speed— Up to 38.4 kbps
[b]Line Type—(2) twisted pair
Operation—2-wire half-duplex, 4-wire full duplex, point-to-point or multipoint
Protocol—Asynchronous or synchronous
Receive Clock—Derived from receive signal
RTS/CTS Delay— Externally strap selected to 0.7 or 50 mS Speed — Up to 38.4 kbps
Surge Protection—600 watts power dissipation for up to 1 msec
Transmit Clock— Internal, external, or looped back from recovered signal
Size—6.6H x 1.9W x 5.3D cm (2.6"H x .73"W x 2.1"D)
NOTE: Must be used in pairs.
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