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Quatech DSC-300 manuel d'utilisation

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- nom du fabricant et année de fabrication Quatech DSC-300
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Tout d'abord, il contient la réponse sur la structure, les possibilités du dispositif Quatech DSC-300, l'utilisation de divers accessoires et une gamme d'informations pour profiter pleinement de toutes les fonctionnalités et commodités.

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Table des matières du manuel d’utilisation

  • Page 1

    DS C - 200 /300 Two Channel RS- 422/485 Asynchronous Communications Adapte r for PCI bus User's Manual QUATECH, INC. TEL: (330) 434-3154 662 Wolf Ledges Parkway FAX: (330) 434-1409 Akron, Ohio 44311 http://www.quatech.com[...]

  • Page 2

    WARRANTY INFORMATION Quatech, Inc. warrants the DSC-200/300 to be free of defects for five (5) years from the date of purchase. Quatech, Inc. will repair or replace any board that fails to perform under normal operating conditions and in accordance with the procedures outlined in this document during the warranty period. Any damage that results fro[...]

  • Page 3

    (c) 1998 - 2000 , Quatech, Inc. NOTICE The information contained in this document cannot be reproduced in any form without the written consent of Quatech, Inc. Likewise, any software programs that might accompany this document can be used only in accordance with any license agreement(s) between the purchaser and Quatech, Inc. Quatech, Inc. reserves[...]

  • Page 4

    Declaration of Conformity Manufacturer's Name: Quatech Inc. Manufacturer's Address: 662 Wolf Ledges Parkway Akron, Ohio 44311 (USA) Application of Council Directive: 89/336/EEC Standards to which Conformity is Declared: * EN50081-1 (EN55022, EN60555-2, EN60555-3) * EN50082-1 (IEC 801-2, IEC 801-3, & IEC 801-4) Type of Equipment: Infor[...]

  • Page 5

    32 8.5 Half-Duplex/Full-Duplex Selection ......................... 31 8.4 AUXIN/AUXOUT Loopback ................................ 31 8.3 XCLK .......................................................... 30 8.2 RCLK .......................................................... 30 8.1 RTS/cts Handshake .......................................... 29 8 Extern[...]

  • Page 6

    38 11 Troubleshooting ......................................... 37 10 Specifications .............................................. 36 9 PCI Resource Map .......................................... 35 8.7 RS-422/485 Peripheral Connection .......................... 34 8.6 Termination Resistors ........................................[...]

  • Page 7

    1 General Information The Quatech, Inc. DSC-200/300 provides two RS- 422 or RS-485 asynchronous serial communication interfaces for IBM-compatible personal computer systems using the PCI expansion bus . The DSC-200/300 uses Quatech's new Enhanced Serial Adapter design. Legacy serial port data rates are limited to a maximum of 115,200 bits per [...]

  • Page 8

    1 . 1 Features T he standard DSC-200/300 implements each of its communication channels with a 16750 UART and uses standard line driver and receiver components. For improved performance and indust rial -grade reliability . 1 . 1 . 1 " IND " Option --- Surge Suppression Upgrade The " IND " upgrade provides the protection essential[...]

  • Page 9

    2 Hardware Configuration The DSC-200/300 is automatically configured at boot time by the computer's BIOS or operating system. There are no required switches or jumpers to set for installation. This chapter lists a number of jumper settings that control various hardware features. Jumpers J1-J4 , located in a column near the D-9 connectors, cont[...]

  • Page 10

    2 . 2 Signal Connections The DSC-200/300 provides each of two serial ports with four differential signal pairs: TxD, RxD, AUXOUT, and AUXIN. TxD and RxD are always present at the connector. The AUXOUT and AUXIN signals can be used to support RTS/CTS handshaking, external clocking, or external signal loopback. The factory default configuration, as s[...]

  • Page 11

    2 . 4 Clock Rate and Optional Registers Figure 3 shows the jumper configuration as shipped from the factory, with two spare jumpers applied in neutral positions. Remove one or both and apply as shown in following sub sections to set optional features. SPAD X2 X4 X8 J10 J11 J12 J13 Figure 3 --- Factory default clock rate and options settings 2 . 4 .[...]

  • Page 12

    2 . 4 . 2 Force High-Speed UART Clock (X2, X4, or X8, J 10 -J 12 ) These jumpers force an increase of the UART input clock frequency by a factor of two, four, or eight. This feature can allow legacy software to use baud rates above 115,200 bits per second. It is also useful if the serial port device driver does not directly support setting the high[...]

  • Page 13

    3 Hardware Installation 1. Turn off the power of the computer system in which the DSC-200/300 is to be installed. 2. Remove the system cover according to the instructions provided by the computer manufacturer. 3. Make any desired optional jumper setting changes. 4. Install the DSC-200/300 in any empty PCI expansion slot. The board should be secured[...]

  • Page 14

    4 Address Map and Special Registers This chapter explains how the two UARTs and special registers are addressed, as well as the layout of those registers. This material will be of interest to programmers writing driver software for the DSC-200/300. 4 . 1 Base Address and Interrupt Level (IRQ ) The base address and IRQ used by the DSC-200/300 are de[...]

  • Page 15

    4 . 2 Enabling the Special Registers The DSC-200/300 contains two unique registers, an Interrupt Status Register and an Options Register. These registers are enabled when the SPAD jumper (J13) is removed (factory default). They replace the UART Scratchpad Register on accesses to register address 7. The Interrupt Status Register and Options Register[...]

  • Page 16

    4 . 4 Options Register The Options Register allows software to identify the DSC-200/300 as a Quatech Enhanced Serial Adapter. It also allows software to set the UART clock rate multiplier. Figure 10 shows the structure of the Options Register. The powerup default of the Options Register is all bits zero. Clock rate multiplier bit 0 RR0 0 Clock rate[...]

  • Page 17

    4 . 4 . 2 Clock Rate Multiplier A standard serial port operates at a clock speed of 1.8432 MHz. In order to achieve higher data rates, Quatech Enhanced Serial Adapters can operate at two times , four times, or even eight times this standard clock speed. This is controlled by the clock rate multiplier bits in the Options Register. Software can deter[...]

  • Page 18

    5 Windows Configuration 5 . 1 Windows Mille nnium 1. After inserting the D SC 200/300 for the first time the "Add New Hardware Wizard" will begin. Select "Search for the best driver for your device.". Check the "Removable media" and "Specify location" box. Click the "Next" button. 3. Window will loc[...]

  • Page 19

    5 . 2 Windows 2000 1. After inserting a DSC-200/300 for the first time, the "Add New Hardware Wizard will appear at start up. C lick the "OK" button. 2. The following dialog box insert the Quatech COM CD (shipped with the device). Click the "OK" button. 4. The following dialog box will display the appropriate INF file on th[...]

  • Page 20

    5 . 3 Windows 98 1. After inserting a DSC-200/300 for the first time, the "Add New Hardware Wizard will appear at start up. C l ick the "Next" button. 2. Select "Search for the best driver for you device". Click the "Next" button. 3. On the next dialog, select the " CD-ROM DRIVE " check box. Insert the Q[...]

  • Page 21

    4. The following dialog box will display the appropriate INF file on the diskette in drive. Click the "Next" button. 5. Window will copy the INF file from the diskette and display a final dialog indic ation that the process is complete. Click the "Finish" button. 5 . 4 Windows 95 The following instructions provide step-by-step i[...]

  • Page 22

    4. Double click the DSC-200/300 model name and a properties box should open for the hardware adapter. 5. Click the "Resources" tab located along the top of the properties box to view the resources Windows 95 has allocated for the DSC-200/300 match the hardware configuration. Because PCI is a true plug-and-play bus, do not attempt to modif[...]

  • Page 23

    5 . 5 Using the " New Hardware Found" Wizard The following instructions provide step-by-step instructions on installing the DSC-200/300 in Windows using the "New Har dware Found " wizard. 1. After booting the computer with a newly-installed DSC-200/300, the "New Hardware Found" dialog box will appear. If you have never[...]

  • Page 24

    9. The "New Hardware Found" dialog will repeat for each of the serial ports on the DSC-200/300 as each port is registered with Windows. 10. Installation is complete. 5 . 6 Windows NT The Windows NT device driver is installed by running the SETUP program. Up to 256 serial ports are supported. There is a command line-based configuration uti[...]

  • Page 25

    6 DOS and Other Operating Systems The DSC-200/300 is not a direct drop-in replacement for a legacy serial port because its base address and IRQ cannot be fixed at values such as 3F8 hex, IRQ 4 (COM1) or 2F8 hex, IRQ 3 (COM2), etc. Rather, the system BIOS assigns the address and the IRQ in a plug-and-play fashion at boot time. Software which is to u[...]

  • Page 26

    The QTPCI program is capable only of displaying the PCI configuration. It cannot be used to make changes. Q - Quatech PCI adapters N - Other PCI devices X - EXIT M - Change to Expert Mode Quatech PCI Configuration Information Display Software Version 1.00 INSTRUCTIONS: ------------------------ Press keys listed in the menu at the bottom of the scre[...]

  • Page 27

    non-Quatech PCI devices in the system, including those devices integrated on the motherboard. In this example, the "Base addr 0" resource is reserved. For users interested in even more details, PCI BIOS information can be displayed by pressing the "B" key. Pressing the "I" key displays the PCI interrupt routing table. [...]

  • Page 28

    7 OS/2 The OS/2 device driver supports up to 32 serial ports in a system. Installation is a manual, but simple, process. Please refer to the read me documentation included on the Quatech COM CD with the device driver for full installation and configuration details. Quatech DSC -200/300 User ' s Manual 28[...]

  • Page 29

    8 External Connections The DS C-200/300 provides four differential communication signals per channel. The two output signals are Transmit Data (TxD) and Auxiliary Output (AUXOUT). The two input signals are Receive Data (RxD) and Auxiliary Input (AUXIN). A ground signal is also provided. The available input signals for AUXIN are Clear To Send (CTS) [...]

  • Page 30

    8 . 1 RTS/CTS Handshake Transmission of RTS, combined with reception of CTS, allows for hardware handshaking (data flow control) between the UART and the external device. RTS is transmitted on AUXOUT by connecting pins 4 and 5 of the jumper block. CTS is received on AUXIN by connecting pins 1 and 2 of the jumper block. If RTS/CTS handshaking is not[...]

  • Page 31

    8 . 3 XCLK This is the output clock signal used by the transmitter portion of the UART. It is generally connected to the UART's own receive clock input (RCLK). This is done by connecting pins 3 and 6 of the jumper block. If desired, XCLK can be transmitted to an external source over the AUXOUT line by connecting pins 5 and 6 of the jumper bloc[...]

  • Page 32

    8 . 5 Half-Duplex/Full-Duplex Selection Using jumper blocks J6 and J8, the transmitters and receivers of each channel can be enabled and disabled by modem control signals. This allows operation in both half-duplex or full-duplex modes. The transmit drivers can be controlled by either the Data Terminal Ready (DTR) or the Request to Send (RTS) output[...]

  • Page 33

    Full-Duplex Operation 1 2 3 6 5 4 RTS DTR Tx ENABLE Tx ENABLE Tx ENABLE Rx ENABLE Half-Duplex(DTR) Operation 1 2 3 6 5 4 RTS DTR Tx ENABLE Tx ENABLE Tx ENABLE Rx ENABLE Half-Duplex(RTS) Operation 1 2 3 6 5 4 RTS DTR Tx ENABLE Tx ENABLE Tx ENABLE Rx ENABLE Jumpers J6, J8 Figure 23 --- Half- or full-duplex selection AUXOUT AUXIN RS-422 or RS-485 Rece[...]

  • Page 34

    8 . 6 Termination Resistors Line termination resistors are provided for the input s ignals of each of the DS C -200/300 's RS-422/485 ports. Termi nation may be selected or removed for individual signal lines using jumper blocks J1-J4. RS-422 Rt = 100 ohm 1/2W RS-485 Rt = 120 ohm 1/2W + - RS-422/485 Receiver Rt RXD+ AUXIN+ RXD- AUXIN- or 1 2 3[...]

  • Page 35

    8 . 7 RS-422/485 Peripheral Connection The DS C -200/300 connects to peripheral equipment through two female D-9 connectors. The serial port connector definitions are listed in Figure 26 . 3 GND 9 AUXIN- 5 AUXIN+ 6 AUXOUT- 1 AUXOUT+ 8 RxD- 4 RxD+ 7 TxD- 2 TxD+ D-9 Connector Pin SignalDescription Figure 26 --- DS C -200/300 connector definitions 1 2[...]

  • Page 36

    9 PCI Resource Map Listed below are the PCI resources used by the DSC-200/300. Such information may be of use to customers writing their own device drivers or other custom software. A detailed description of the DSC-200/300's UARTs is available on the Quatech web site. (all numbers in hex) PCI Vendor ID: 0x135C Quatech, Inc. PCI Device ID: 0x0[...]

  • Page 37

    10 Specifications Bus interface PCI, 32 -bit bus , 5-volt only IBM - compatible computers Dimensions: approx. 5.5 " x 3. 5 " Serial ports Controller: 16750 with 64-byte FIFOs Interface: Two female D-9 connectors Trans ceivers : S P491 or compatible Differential output: 2V min. with 50-ohm load (RS-422) 1.5V min. with 27-ohm load (RS-485) [...]

  • Page 38

    11 Troubleshooting Listed here are some common problems and frequent causes of those problems. If the information here does not provide a solution, contact Quatech technical support. Any unauthorized repairs or modifications will void the DS C -200/300's warranty. Computer will not boot up. 1. Is the DSC-200/300 properly inserted? Remove the c[...]

  • Page 39

    DSC-200/300 User's Manual Revision 1.20 June 2001 P/N: 940-0145-120 Quatech DSC -200/300 User ' s Manual 39[...]