Black Box ME800A Instrukcja Użytkownika

AUGUST 2000ME800AME800A-R2ME805-CME805-C-R2ME810Short-Haul Modem B(SHM-B Async)CUSTOMER SUPPORT INFORMATIONOrder toll-free in the U.S.: Call 877-877-B

9SHM-B ASYNC3. InstallationInstallation involves three basic steps: four-wireconnections; EIA-232 connection; switch settings.3.1 Four-Wire Connection

10SHM-B ASYNC5. Insert the wires into the terminal strip; tighten thescrew terminals.6. After you have made all four connections, wrap thenylon cable

11SHM-B ASYNCFigure 2. Wiring diagram for two SHM-B units.3.2 EIA-232 ConnectionConnect the SHM-B to your computer or terminal with astandard EIA-232

12SHM-B ASYNCTable 1. EIA-232 Pin Connections on SHM-BPin Number Signal Name1 Protective Ground2 Transmit Data/Receive Data (TD/RD)*3 Receive Data/Tra

13SHM-B ASYNCinformation concerning its DTE/DCE setting. Table 2gives the EIA-232 pinning of the SHM-B with theDTE/DCE switch in the DCE position.Tabl

14SHM-B ASYNC3.4 Flow ControlThe SHM-B uses a clever, yet simple way to allow thisunit to work with a broad line of equipment.STANDARDEIA-232C HANDSHA

15SHM-B ASYNCBecause DTR, DSR, RTS, and CTS are tied togetherinternally, dropping any one of these four signals to anegative state will also drop DCD

16SHM-B ASYNC4. OperationAfter completing the wiring and configurationprocedure, slide the printed circuit card back into thecase while pulling the da

17SHM-B ASYNCWhen in loopback mode, the switch button indicatorwill appear to the sender. If a CRT terminal is connectedto the SHM-B, typing character

18SHM-B ASYNC5. Rackmount InstallationThe SHM-B Async Card is a rack mount unit (ME805-C)that installs in a standard 19-inch panel rack. (You canuse t

1SHM-B ASYNCFEDERAL COMMUNICATIONS COMMISSIONANDINDUSTRY CANADARADIO FREQUENCY INTERFERENCE STATEMENTSThis equipment generates, uses, and can radiate

19SHM-B ASYNCeasiest access to the terminals, switches, etc.After a SHM-B Card is wired, it can then be inserted intoan open slot in the SHM-B rack. B

20SHM-B ASYNC6. Troubleshooting GuideThe following information will help you troubleshootyour installation if problems develop. If your particularsitu

21SHM-B ASYNCprinted circuit board is properly inserted and fullyseated against the motherboard of the rack.SYMPTOM: No data transfer in one or both d

22SHM-B ASYNCPins 4, 5, 6, 8, and 20 should all be HIGH to enablecommunication.5. If pin 8 (Carrier Detect) is low, this indicates:• a defective trans

23SHM-B ASYNCcomputing equipment for consistency.3. Wire the SHM-B units back-to-back, eliminating thetwisted-pair; see if you still have errors.• If

24SHM-B ASYNC3. Check the path of your four-wire circuit for potentialsources of interference (fluorescent lighting,electrical motors, etc.). Such sou

25SHM-B ASYNCSYMPTOM: TD or RD indicator is steadily on red withno data attempting to pass (no DTEs attached). Check for reversal of polarity on the f

1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746© Copyright 2000. Black Box Corporation. All rights reserved.

2SHM-B ASYNCNORMAS OFICIALES MEXICANAS (NOM)ELECTRICAL SAFETY STATEMENTINSTRUCCIONES DE SEGURIDAD1. Todas las instrucciones de seguridad y operación d

3SHM-B ASYNC10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calorcomo radiadores, registros de calor, estufas u otros aparat

4SHM-B ASYNCTRADEMARKS USED IN THIS MANUALAny trademarks mentioned in this manual areacknowledged to be the property of the trademarkowners.

5SHM-B ASYNC1. SpecificationsTransmission — Data Rate (bps) Distance (miles/km)19,200 1/1.69600 2/3.24800 3/4.82400 4/6.4NOTE:The above specifications

6SHM-B ASYNCend of the loop. Interface is switch-selectable forDTE/DCE configuration (pins 2 and 3 are reversed)Connectors — (1) DB25 female, (1) 5-sc

7SHM-B ASYNCPrimary: 115 VAC ±10%, 60 Hz, 5 watts (12 watts max.);Primary: 230 VAC ±10%, 50/60 Hz; Secondary: 17 VAC,700 mASize — Standalone: 1.4"

8SHM-B ASYNC2. IntroductionThe Short-Haul Modem Model B Async (SHM-B Async)is an asynchronous full-duplex 4-wire linedriver/receiver which allows two