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SPECIFICATIONS:

Hardware Required:  Cards can be installed only in MicroRacks (RM202, RM204, RM208 and RM216)

Cable Required:  For modem-to-modem line:  Two- or four-wire unconditioned twisted-pair, 19 to 26 AWG

Interfaces:  Serial: EIA/TIA-561 (compatible with EIA RS-232 and ITU-TSS [CCITT] V.24);

Line:  Two- or four-wire telco;
Internal:  Card-edge for module--MicroRack interconnection.

Protocol:  Asynchronous or Synchronous.

Clock Source:  Internal, external (from DTE) or received (from other Card) (user-selectable).

Data Format:  Word length (including start bit, data bits, stop bits, and parity bit) must equal 8, 9, 10, or 11 bits.  (user-selectable)

Flow Control:  Transparent to all types of software (X-ON/X-OFF, robust X-ON/X-OFF, etc.) flow control; can be set to support hardware flow

control.

Operating Mode:  2-wire half-duplex or 4-wire half- or full-duplex.   (user-selectable).

Data Rates:  57.6, 38.4, 28.8, 19.2, 14.4, 9.6, 7.2, 4.8, 3.6, 2.4, or 1.2 Kbps (user-selectable)

Maximum Distance:  See chart.

Isolation:  1500 volts RMS minimum using customer transformers.

Surge Protection:  Silicon Avalanche Diodes.

Surge-Response Time:  1 ps.

Maximum Surge Protection:  600 watts dissipated after 1 ms.

User Controls:  (2) Front-panel toggle switches:  Remote or (local) Analog loopback; 511 or 511/E V.52 diagnostics;

(3) 8-Position DIP switches on main module:

(1) for data rate, clock source, protocol, and carrier control;
(1) for 2- or 4-wire operation, diagnostics, RTS/CTS delay, signaling-rate range, and word length;
(1) for input impedance, point-to-point or multipoint operation, remote loopback-test initiation, and anti-stream control.
(3)  Frame-ground-connection jumpers on interface module:  To Line Shield, DTE Shield (Protective Ground), and Signal Ground

Indicators:  (11)  Front-panel LED's:

(1) each for Power, Test, Error;
(2) each for TD, RD, RTS, AND CD.

Diagnostics:  ITU-TSS V.54 remote digital and local analog loopbacks; ITU-TSS V.52 BERT testing.

Connectors:  On Main Board:  (1) 50-position card-edge male (to MicroRack);

On Interface Module:  (1) 50-position card-edge male (to MicroRack);  (1) 6-pin RJ-11 female for modem-to-modem line,

(1) 10-Pin RJ female for modem-to-DTE line.

Power:  From MicroRack's power supply.

Input: 120 VAC or 240 VAC (user-selectable);
Output:  10 VAC.
Consumption:  1.8 watts typical

Fuse:  On MicroRack:

400 ma when power supply is set to 120-VAC input;
200 ma when power supply is set to 240-VAC input.

INTRODUCTION:

     The Multi-Function LD Card is a short-range modem on a dual rack card (it has a main [front] module and an
interface [rear] module).  The Card operates across two wires (half-duplex) or four wires (full- or half-duplex),
communicating synchronously or asynchronously, up to a maximum range of 20 miles (32.2 km).  You can set
the Card to any of twelve data rates from 1.2 to 57.6 Kbps.  Local and remote modems on Multi-Function LD
Cards always communicate with each other synchronously.  When connected to an asynchronous RS-232
device, the Card performs synchronous--asynchronous conversion.
     The Card has several features that enhance its overall performance, including automatic equalization,
automatic gain control, and anti-streaming timer, transformer isolation, and Silicon avalanche Diode surge
protection. The Card also has strong diagnostics: It features V.52-compliant bit-error-rate (BERT) pattern tests
and two V.54 test modes.  with the Card's 11 easy-to-read front-panel LED's you can easily monitor the status
of data transmission and diagnostic testing.
     The Multi-Function LD Card is fabricated using the latest surface-mount technology, so you get high-quality
short-range modem performance on a convenient rack card.  The Card is available with a 10-Pin RJ connector
and RJ-11 line-interface connectors, on its interface (rear) module.  It fills one function-card slot in our
MicroRacks (RM202, RM204, RM208, or RM216).

CONFIGURATION:

Setting the Switches on the Main Module:

     The Multi-Function LD Card has three 8-position DIP switches -- S1, S2, and S3 mounted on the circuit board
of its main (front) module, as shown on the first page.  These configuration switches allow you to select data
rates, clocking methods, V.52 and V.54 tests, word lengths, extended signaling rates, sync or async protocol,
2- or 4-wire operation, anti-stream control, and input impedance.

Configuration Switch "S1":

     Use the individual positions on DIP switch S1 to set data rate, clock source, sync vs. async
protocol and carrier-control method.  The factory-default settings are summarized in the Table below.

Position

Function

Default Settings

S1-1
S1-2
S1-3
S1-4

DATA RATE
DATA RATE
DATA RATE
DATA RATE

On

9600

Off

9600

Off

9600

On

9600

S1-5
S1-6

CLOCK SOURCE
CLOCK SOURCE

On

               Internal

On

               Internal

S1-7

PROTOCOL

On                Asynchronous

S1-8

CARRIER CONTROL

Off

     Constantly

ON

Содержание ME759C-RJ11

Страница 1: ...ULE FRONT CARD ME759C RJ11 JB4 1 2 3 INTERFACE MODULE REAR CARD Line RJ 11 INTERFACE MODULE REAR CARD Analog 511 511E TEST Remote 1 2 3 4 5 6 7 8 ON 1 2 3 4 5 6 7 8 This switch is on the bottom side o...

Страница 2: ...a when power supply is set to 120 VAC input 200 ma when power supply is set to 240 VAC input INTRODUCTION The Multi Function LD Card is a short range modem on a dual rack card it has a main front modu...

Страница 3: ...ti Function LD Card operates synchronously or asynchronously S1 7 Setting ON Asynchronously default OFF Synchronously S1 Position 8 Carrier Control Method determines whether the carrier is constantly...

Страница 4: ...tolerate S2 6 Signaling Rate Range OFF 2 5 to 1 default ON 2 5 to 2 3 S2 7 and S2 8 Word Length determines the word length that the Multi Function LD Card will expect for synchronous or asynchronous d...

Страница 5: ...he timer entirely S3 7 S3 8 Setting OFF OFF Disabled default OFF ON 12 5 Seconds ON OFF 50 Seconds ON ON 12 5 Seconds Setting the Jumpers on the Interface Module Before you install the Card you should...

Страница 6: ...power supply or its fuses Replacing the Power Supply s Fuse The MicroRack s power supply uses a 400 mA fuse for 120 VAC circuits and a 200 mA fuse for 240 VAC circuits The fuse compartment is located...

Страница 7: ...chdown block If you will be running cable directly between two Multi Function LD Cards you can get a custom cable from Black Box as a special quote or you can use regular straight through pinned cable...

Страница 8: ...modem s red CD LED will light and the remote modem s green CD LED will light B If there is flat satin cable in the line somewhere between the modems the local modem s Error LED and green CD LED will...

Страница 9: ...ilar to or better than those listed above for example lower capacitance or lower resistance Bench tests yield the following data rate maximum distance results Data Rate in bps 19 AWG 22 AWG 24 AWG 26...

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