Black Box ME500A Manual

ME500A
BLACK BOX
PWR TX RX RTS CD
SPECIFICATIONS
Transmission Format: Synchronous or Asynchronous, 2-wire/half duplex or 4-wire/full or half duplex.
Interface: RS-232 (CCITT V.24) connection via DB25 female; Twisted-pair connection via RJ-45
Transmission Line: 2- or 4-wire UTP, 19 to 26 AWG.
Data Rates: Synchronous or Asynchronous at 1.2, 1.8, 2.4, 3.6, 4.8, 7.2, 9.6, 14.4, 19.2, 28.8, 38.4, 57.6,
and 64 kbps. (Switch-selectable)
Clocking: Internal, External, or Receive Recover.
Controls: Carrier Constantly ON or Controlled by RTS; RTS/CTS delay set to no delay, 7 ms, or 53 ms.
Applications: Point-to-Point or Multipoint.
Indicators: Mono-color LED's for TX, RX, RTS, and CD; Single LED's for Power, Test, and Error.
RTS Anti-Stream Timer: 12.5 sec., 50 sec., or disabled (switch-selectable); Tolerance: +50%, -0.
Diagnostics: V.52-compliant bit-error-rate pattern (511/511E pattern) generator and detector with
error-injection mode; V.54 compliant--Local Analog Loopback and Remote Digital Loopback,
activated by front-panel switch or via RS-232 interface.
Transformer Isolation: 2000 V RMS.
Surge Protection: Immune to IEC-801-5 Level 2, 1kv.
Power Supply: 100 to 242 VAC Universal Interface.
Async Sync
Industrial Line Driver
511
ERROR TEST Remote
Normal
Local
511E
:
DB25
Female
Conn.
1 2 3 4 5 6 7 8
The Async/Sync Industrial Line Driver operates 2-wire (half-duplex) or 4-wire (full- or half-duplex), in synchronous or asynchronous
modes, over unconditioned telephone lines. The Line Driver supports data rates up to 64 kbps. It operates in synchronous mode between
the local and remote modems; when connected to an asynchronous RS-232 device, the Line Driver converts the asynchronous data to
synchronous data.
To enhance overall performance, the Line Driver features equalization, anti-streaming timer, transformer isolation (to guard against data
loss due to ground-potential differences), and Silicon Avalanche Diode surge protection (to guard against data-lone transients).
The Async/Sync Industrial Line Driver features V.52-compliant bit-error-rate pattern tests and two V.54 test modes (local analog loopback
and remote digital loopback). The operator at the local end can test both local and remote modems, plus the line, in the digital-loopback mode.
Both RDL and LAL modes can be controlled by a manual switch or via the V.24/RS-232 interface.
Configuration Switches:
The Async/Sync Industrial Line Driver uses 24 external mini DIP switches that allow configuration to an extremely wide range of
applications. These 24 DIP switches are grouped into three eight-switch sets, and are externally accessible from the underside of
the unit. Since all configuration DIP switches are externally accessible, there is no need to open the case for configuration.
The configuration switches allow you to select data rates, clocking methods, V.52 and V.54 tests, word lengths, extended signaling
rates, async or sync mode, 2- or 4-wire operation, anti-stream control, and input impedance.
PWR
TX
ON RX
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
RTS
CD
ERROR
TEST
BOTTOM OF UNIT
INTRODUCTION:
CONFIGURATION:
TOGGLE
SWITCHES