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Black Box Short-Haul Modem B manuale d’uso - BKManuals

Black Box Short-Haul Modem B manuale d’uso

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Un buon manuale d’uso

Le regole impongono al rivenditore l'obbligo di fornire all'acquirente, insieme alle merci, il manuale d’uso Black Box Short-Haul Modem B. La mancanza del manuale d’uso o le informazioni errate fornite al consumatore sono la base di una denuncia in caso di inosservanza del dispositivo con il contratto. Secondo la legge, l’inclusione del manuale d’uso in una forma diversa da quella cartacea è permessa, che viene spesso utilizzato recentemente, includendo una forma grafica o elettronica Black Box Short-Haul Modem B o video didattici per gli utenti. La condizione è il suo carattere leggibile e comprensibile.

Che cosa è il manuale d’uso?

La parola deriva dal latino "instructio", cioè organizzare. Così, il manuale d’uso Black Box Short-Haul Modem B descrive le fasi del procedimento. Lo scopo del manuale d’uso è istruire, facilitare lo avviamento, l'uso di attrezzature o l’esecuzione di determinate azioni. Il manuale è una raccolta di informazioni sull'oggetto/servizio, un suggerimento.

Purtroppo, pochi utenti prendono il tempo di leggere il manuale d’uso, e un buono manuale non solo permette di conoscere una serie di funzionalità aggiuntive del dispositivo acquistato, ma anche evitare la maggioranza dei guasti.

Quindi cosa dovrebbe contenere il manuale perfetto?

Innanzitutto, il manuale d’uso Black Box Short-Haul Modem B dovrebbe contenere:
- informazioni sui dati tecnici del dispositivo Black Box Short-Haul Modem B
- nome del fabbricante e anno di fabbricazione Black Box Short-Haul Modem B
- istruzioni per l'uso, la regolazione e la manutenzione delle attrezzature Black Box Short-Haul Modem B
- segnaletica di sicurezza e certificati che confermano la conformità con le norme pertinenti

Perché non leggiamo i manuali d’uso?

Generalmente questo è dovuto alla mancanza di tempo e certezza per quanto riguarda la funzionalità specifica delle attrezzature acquistate. Purtroppo, la connessione e l’avvio Black Box Short-Haul Modem B non sono sufficienti. Questo manuale contiene una serie di linee guida per funzionalità specifiche, la sicurezza, metodi di manutenzione (anche i mezzi che dovrebbero essere usati), eventuali difetti Black Box Short-Haul Modem B e modi per risolvere i problemi più comuni durante l'uso. Infine, il manuale contiene le coordinate del servizio Black Box in assenza dell'efficacia delle soluzioni proposte. Attualmente, i manuali d’uso sotto forma di animazioni interessanti e video didattici che sono migliori che la brochure suscitano un interesse considerevole. Questo tipo di manuale permette all'utente di visualizzare tutto il video didattico senza saltare le specifiche e complicate descrizioni tecniche Black Box Short-Haul Modem B, come nel caso della versione cartacea.

Perché leggere il manuale d’uso?

Prima di tutto, contiene la risposta sulla struttura, le possibilità del dispositivo Black Box Short-Haul Modem B, l'uso di vari accessori ed una serie di informazioni per sfruttare totalmente tutte le caratteristiche e servizi.

Dopo l'acquisto di successo di attrezzature/dispositivo, prendere un momento per familiarizzare con tutte le parti del manuale d'uso Black Box Short-Haul Modem B. Attualmente, sono preparati con cura e tradotti per essere comprensibili non solo per gli utenti, ma per svolgere la loro funzione di base di informazioni e di aiuto.

Sommario del manuale d’uso

  • Pagina 1

    AUGUST 2000 ME800A ME800A-R2 ME805-C ME805-C-R2 ME810 Short-Haul Modem B (SHM-B Async) CUSTOMER SUPPORT INFORMATION Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500 ) FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 Mailing address: Black Box Corporation , 1000 Park Drive, Law[...]

  • Pagina 2

    1 SHM-B ASYNC FEDERAL COMMUNICATIONS COMMISSION AND INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENTS This equipment generates, uses, and can radiate radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer’s instructions, may cause interference to radio communication. It has been te[...]

  • Pagina 3

    2 SHM-B ASYNC NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD 1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado. 2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura. 3. Todas las advertencias en el [...]

  • Pagina 4

    3 SHM-B ASYNC 10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor como radiadores, registros de calor, estufas u otros aparatos (incluyendo amplificadores) que producen calor . 11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del tipo descrito en el instructivo de operación, o como se indiqu[...]

  • Pagina 5

    4 SHM-B ASYNC TRADEMARKS USED IN THIS MANUAL Any trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.[...]

  • Pagina 6

    5 SHM-B ASYNC 1. Specifications Transmission — Data Rate (bps) Distance (miles/km) 19,200 1/1.6 9600 2/3.2 4800 3/4.8 2400 4/6.4 NOTE: The above specifications are valid for 24- or 26-AWG unshielded twisted-pair telephone cable insulated by polyethylene with a mutual capacitance of 0.083 µf/mile. Shielded twisted-pair cable will reduce the dista[...]

  • Pagina 7

    6 SHM-B ASYNC end of the loop. Interface is switch-selectable for DTE/DCE configuration (pins 2 and 3 are reversed) Connectors — (1) DB25 female, (1) 5-screw terminal block Diagnostics — Loopbacks provided by a front-panel switch: Analog loopback on a 4-wire loop and digital loopback on equipment interface (EIA-232) Status Indication — Two bi[...]

  • Pagina 8

    7 SHM-B ASYNC Primary: 115 VAC ±10%, 60 Hz, 5 watts (12 watts max.); Primary: 230 VAC ±10%, 50/60 Hz; Secondary: 17 VAC, 700 mA Size — Standalone: 1.4"H x 4.25"W x 4.5"D (3.8 x 10.9 x 11.7 cm); Rackmount: 5.25"H x 17"W x 9"D (13 x 43 x 23 cm) Weight — Standalone: 1.3 lb. (0.6 kg), including transformer; Rackmount[...]

  • Pagina 9

    8 SHM-B ASYNC 2. Introduction The Short-Haul Modem Model B Async (SHM-B Async) is an asynchronous full-duplex 4-wire line driver/receiver which allows two EIA-232 devices to communicate at distances of up to 4 miles and at data speeds of up to 19,200 bps. In addition to the transmitter and receiver circuits, the SHM-B Async includes EIA-232 control[...]

  • Pagina 10

    9 SHM-B ASYNC 3. Installation Installation involves three basic steps: four-wire connections; EIA-232 connection; switch settings. 3.1 Four-Wire Connections Figure 1 shows the location of the terminal block on the circuit board. Refer to Figure 2 to make the proper connections between two SHM-B units. NOTE: Transmit + (TX+) on one modem is wired to[...]

  • Pagina 11

    10 SHM-B ASYNC 5. Insert the wires into the terminal strip; tighten the screw terminals. 6. After you have made all four connections, wrap the nylon cable tie (packaged with the SHM-B) around the wires. Pull the tie tight around the wires to secure them to the printed circuit board. Trim the excess nylon tie with wire cutters or scissors. Figure 1.[...]

  • Pagina 12

    11 SHM-B ASYNC Figure 2. Wiring diagram for two SHM-B units. 3.2 EIA-232 Connection Connect the SHM-B to your computer or terminal with a standard EIA-232 cable and DB25 connectors. Refer to your equipment’s installation manual if you need information on the exact EIA-232 signals required for your equipment. Often, it is best to use only the Tran[...]

  • Pagina 13

    12 SHM-B ASYNC Table 1. EIA-232 Pin Connections on SHM-B Pin Number Signal Name 1 Protective Ground 2 Transmit Data/Receive Data (TD/RD)* 3 Receive Data/Transmit Data (RD/TD)* 4 Request to Send (RTS) 5 Clear to Send (CTS) 6 Data Set Ready (DSR) 7 Signal Ground 8 Carrier Detect (CD) 20 Data Terminal Ready (DTR) *TD and RD can be reversed using the D[...]

  • Pagina 14

    13 SHM-B ASYNC information concerning its DTE/DCE setting. Table 2 gives the EIA-232 pinning of the SHM-B with the DTE/DCE switch in the DCE position. Table 2. Pinning with DTE/DCE switch in the DCE position. PIN NUMBER SIGNAL NAME DIRECTION 1 Protective Ground ————— 2 Transmitted Data TD* To DCE 3 Received Data RD* From DCE 4 Request to [...]

  • Pagina 15

    14 SHM-B ASYNC 3.4 Flow Control The SHM-B uses a clever, yet simple way to allow this unit to work with a broad line of equipment. S TANDARD EIA-232C H ANDSHAKING (RTS/DTR C ONTROL J UMPER IN EN P OSITION ) The individual SHM-B modems force their own DTR, RTS, CTS, and DSR control lines HIGH (>+3V) when: • The twisted-pair wires are installed [...]

  • Pagina 16

    15 SHM-B ASYNC Because DTR, DSR, RTS, and CTS are tied together internally, dropping any one of these four signals to a negative state will also drop DCD on the remote side to a negative state. DCD will also go LOW if the remote SHM-B is powered down, or if the twisted-pair wire is broken. X-ON/X-OFF M ODE (RTS/DTR C ONTROL J UMPER IN DIS P OSITION[...]

  • Pagina 17

    16 SHM-B ASYNC 4. Operation After completing the wiring and configuration procedure, slide the printed circuit card back into the case while pulling the data and power cables through the holes in the back panel. The front panel will snap into the front of the case when the printed circuit board has been completely pushed to the back of the case. Co[...]

  • Pagina 18

    17 SHM-B ASYNC When in loopback mode, the switch button indicator will appear to the sender. If a CRT terminal is connected to the SHM-B, typing characters on the keyboard should result in the same characters appearing on the CRT screen. If no characters appear, check your EIA-232 connections and the setting of S1. See Figure 3 for an illustration [...]

  • Pagina 19

    18 SHM-B ASYNC 5. Rackmount Installation The SHM-B Async Card is a rack mount unit (ME805-C) that installs in a standard 19-inch panel rack. (You can use the SHM-B Rack [ME810], which can hold up to 16 cards.) The SHM-B Async Card will occupy 5.25 inches of vertical rack space, and is 9 inches deep. To install the SHM-B Rack, first remove the acryl[...]

  • Pagina 20

    19 SHM-B ASYNC easiest access to the terminals, switches, etc. After a SHM-B Card is wired, it can then be inserted into an open slot in the SHM-B rack. Be certain that the circuit board has mated with the power pins on the SHM-B rack before applying force to fully seat the board ; otherwise you may damage the board and power pins. When all boards [...]

  • Pagina 21

    20 SHM-B ASYNC 6. T roubleshooting Guide The following information will help you troubleshoot your installation if problems develop. If your particular situation isn’t listed here, call Technical Support for assistance. Have ready a description of the problem with your installation, your DTE equipment make and models, your equipment’s DTE/DCE c[...]

  • Pagina 22

    21 SHM-B ASYNC printed circuit board is properly inserted and fully seated against the motherboard of the rack. SYMPTOM: No data transfer in one or both directions (to, from, or to-and-from the SHM-B). 1. Monitor the TD LED on the sending-end modem while sending data. The light should flash red/green. If not, check the DCE/DTE switch on that unit. [...]

  • Pagina 23

    22 SHM-B ASYNC Pins 4, 5, 6, 8, and 20 should all be HIGH to enable communication. 5. If pin 8 (Carrier Detect) is low, this indicates: • a defective transmission line or connection • a defective remote SHM-B • remote SHM-B without power SYMPTOM: TD and RD LEDs indicate data activity, but data communication doesn’t exist. 1. Check the wirin[...]

  • Pagina 24

    23 SHM-B ASYNC computing equipment for consistency. 3. Wire the SHM-B units back-to-back, eliminating the twisted-pair; see if you still have errors. • If you do have errors, then test each SHM individually in the following way: loopback one SHM’s Transmit-to-Receive by using two short pieces of wire. Connect that SHM to a dumb terminal and key[...]

  • Pagina 25

    24 SHM-B ASYNC 3. Check the path of your four-wire circuit for potential sources of interference (fluorescent lighting, electrical motors, etc.). Such sources of electrical “noise” can provide an environment in which unwanted signals are induced onto your four-wire circuit. Also, check to see if an adjacent four-wire cable carrying a separate d[...]

  • Pagina 26

    25 SHM-B ASYNC SYMPTOM: TD or RD indicator is steadily on red with no data attempting to pass (no DTEs attached). Check for reversal of polarity on the four-wire connection.[...]

  • Pagina 27

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