Related Manuals for Quatech Asynchronous Communications Adapter DSC-200/300
Summary of Contents for Quatech Asynchronous Communications Adapter DSC-200/300
- Page 1 DSC-200/300 Two Channel RS-422/485 Asynchronous Communications Adapter User's Manual QUATECH, INC. 5675 Hudson Industrial Parkway Hudson, Ohio 44236 for PCI bus TEL: (330) 655-9000 FAX: (330) 655-9010 http://www.quatech.com...
- Page 2 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.
- Page 3 The authors have taken due care in the preparation of this document and every attempt has been made to ensure its accuracy and completeness. In no event will Quatech, Inc. be liable for damages of any kind, incidental or consequential, in regard to or arising out of the performance or form of the materials presented in this document or any software programs that might accompany this document.
- Page 4 Standards to which Conformity is Declared: Type of Equipment: Equipment Class: Product Name: Model Number : Declaration of Conformity Quatech Inc. 5675 Hudson Industrial Parkway Hudson, Ohio 44236 (USA) 89/336/EEC * EN50081-1 (EN55022, EN60555-2, EN60555-3) * EN50082-1 (IEC 801-2, IEC 801-3, & IEC 801-4)
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Page 5: Table Of Contents
1 General Information 1.1 Features ............1.1.1 "IND"... - Page 6 8.6 Termination Resistors 8.7 RS-422/485 Peripheral Connection 9 PCI Resource Map 10 Specifications 11 Troubleshooting .........
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Page 7: General Information
The DSC-200/300 is supported under several popular operating systems and environments. Contact the sales department for details on current software offerings. Most device drivers are available for download from the Quatech world wide web site at http://www.quatech.com. Quatech DSC-200/300 User's Manual... -
Page 8: Features
The "IND" upgrade provides the protection essential for reliable use in an industrial environment. Each communication line has a surge suppressor capable of sustaining up to 40A 20us peak transient surges, a clamping voltage of 30V and a peak energy dissipation of 0.1 Joules. Quatech DSC-200/300 User's Manual... -
Page 9: Hardware Configuration
The factory default, shown in Figure 1, is RS-422 termination. For full details, see page 24. Figure 1 --- Factory default signal termination settings Quatech DSC-200/300 User's Manual Jumpers J1-J4 RS-422 termination (100 ohms) -
Page 10: Signal Connections
Loopback AUXOUT to AUXIN Loopback XCLK to RCLK Tx ENABLE Tx ENABLE Tx ENABLE Full Duplex Operation (spare jumpers supplied) Figure 2 --- Factory default signal interface settings Quatech DSC-200/300 User's Manual RCLK AUXIN Rx ENABLE Jumpers J5, J7 Jumpers J6, J8... -
Page 11: Clock Rate And Optional Registers
(see page 10) replace the scratchpad (base address + 7) of each UART. If the SPAD jumper is applied as in Figure 4, the UART scratchpad registers are enabled, and the Interrupt Status Register and the Options Register are not available. Figure 4 --- Enable scratchpad registers Quatech DSC-200/300 User's Manual SPAD SPAD... -
Page 12: Force High-Speed Uart Clock (X2, X4, Or X8, J10-J12)
Factory default software control Force times-four clock Baud rates up to 460.8 kbps Figure 5 --- Clock multiplier jumper options Quatech DSC-200/300 User's Manual SPAD Force times-two clock Baud rates up to 230.4 kbps SPAD Force times-eight clock Baud rates up to 921.6 kbps... -
Page 13: Hardware Installation
7. Turn on the power of the computer system. The output of the DSC-200/300 is two female 9-pin D-connectors. Termination select Serial Port Serial Port Figure 6 --- Jumper/connector locations Quatech DSC-200/300 User's Manual port 1 port 2 Interface configuration Clock multiplier/ scratchpad select SPAD... -
Page 14: Address Map And Special Registers
Interrupts are level-sensitive on the PCI bus. The base address and IRQ are automatically detected by the device drivers Quatech supplies for various operating systems. For cases where no device driver is available, such as for operation under DOS, Quatech supplies the "QTPCI" DOS software utility for manually determining the resources used. -
Page 15: Enabling The Special Registers
DSC-200/300, as shown in Figure 9. The individual bits are cleared as the interrupting ports are serviced. The interrupt service routine should ensure that the interrupt status register reads zero before exiting. 7 (MSB) Quatech DSC-200/300 User's Manual Register selected for SPAD Jumper address 7 accesses... -
Page 16: Options Register
Figure 10--- Options Register bit definitions 4.4.1 Enhanced Serial Adapter Identification The ID bits are used to identify the DSC-200/300 as a Quatech Enhanced Serial Adapter. Logic operations are performed such that the values read back from these bits will not necessarily be the values that were written to them. Bit ID1 will return the logical-AND of the values written to ID[1:0], while bit ID0 will return their exclusive-OR. -
Page 17: 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. -
Page 18: Windows Configuration
"Removable media" and "Specify location" box. Click the "Next" button. Window will locate the proper INF file and copy the file from the CD. Click the "Next" button. The final dialog screen will verify the file copy from the CD. Click the "Finish" button. Quatech DSC-200/300 User's Manual... -
Page 19: Windows 2000
After inserting a DSC-200/300 for the first time, the "Add New Hardware Wizard will appear at start up. Click the "OK" button. The following dialog box insert the Quatech COM CD (shipped with the device). Click the "OK" button. The following dialog box will display the appropriate INF file on the CD in drive. -
Page 20: Windows 98
Wizard will appear at start up. Click the "Next" button. 2. Select "Search for the best driver for you device". Click the "Next" button. On the next dialog, select the "CD-ROM DRIVE" check box. Insert the Quatech COM CD (shipped with the device) into the CD-ROM drive. -
Page 21: Windows 95
Additional information is available on any of these devices by click on the device name and then selecting the "Properties" button. 3. Double click the device group "Multi-function Adapters". The DSC-200/300 model name should appear in the list of Multi-function adapters. Quatech DSC-200/300 User's Manual... - Page 22 The DSC-200/300 ports will be enumerated starting with COM5 (or higher) even if lower logical numbers are available. 7. Select any of the Quatech Serial Ports listed under the group Port (COM and LPT) and click the "Properties" button. This action opens a properties dialog for the specific COM port on the DSC-200/300.
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Page 23: Using The "New Hardware Found" Wizard
3. An "Install From Disk" dialog box should pop up. Insert the CD with the Quatech INF files on it, select the correct drive letter, and click the "OK" button. Windows automatically browses the root directory for an INF file that defines configurations for Multi-function Adapters. -
Page 24: Windows Nt
Device drivers for Windows and OS/2 are also available for the DSC-200/300. The board can be used under DOS and other operating systems as well in many circumstances. The software described below can be obtained from the Quatech web site if it did not come with the board. -
Page 25: Dos And Other Operating Systems
In this example, the DSC-200/300 uses I/O base address FFA0 hex and IRQ 3. The hardware revision of the DSC-200/300 is also displayed. Pressing the "N" key will show similar information for all non-Quatech PCI devices in the system, including those devices integrated on the motherboard. - Page 26 The QTPCI program is capable only of displaying the PCI configuration. It Quatech PCI Configuration Information Display Software INSTRUCTIONS: ------------------------ Press keys listed in the menu at the bottom of the screen. This program only displays information. It cannot make changes.
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Page 27: Routing Table
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: 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. -
Page 29: External Connections
Channel Port 1 Port 2 Figure 17 --- Jumper/Channel correspondence XCLK AUXOUT Tx ENABLE Tx ENABLE Tx ENABLE Quatech DSC-200/300 User's Manual Termination J1, J2 J3, J4 RCLK AUXIN Rx ENABLE Figure 18 --- Pinout of jumpers J5-J8 Signal routing... -
Page 30: Rts/Cts Handshake
AUXIN line by connecting pins 2 and 3 of the jumper block. Figure 20 shows how to select the RCLK mode. XCLK AUXOUT Loopback XCLK to RCLK Quatech DSC-200/300 User's Manual Jumpers J5, J7 RCLK XCLK AUXIN... -
Page 31: Xclk
AUXOUT line. This mode is accomplished by connecting pins 2 and 5 of the jumper block. Figure 22 shows how to select this loopback mode. Figure 22 --- AUXIN/AUXOUT loopback Quatech DSC-200/300 User's Manual Jumpers J5, J7 RCLK... -
Page 32: Half-Duplex/Full-Duplex Selection
Failure to do so may result in multiple active output drivers being connected together, which may cause damage to the board, the computer, and the external Quatech DSC-200/300 User's Manual WARNING: device. - Page 33 Tx ENABLE Tx ENABLE Tx ENABLE Tx ENABLE Figure 23 --- Half- or full-duplex selection XCLK RCLK Figure 24 --- Output control block diagram Quatech DSC-200/300 User's Manual Rx ENABLE Half-Duplex(DTR) Operation Rx ENABLE Half-Duplex(RTS) Operation Rx ENABLE Full-Duplex Operation AUXOUT...
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Page 34: Termination Resistors
DSC-200/300's RS-422/485 ports. Termination may be selected or removed for individual signal lines using jumper blocks J1-J4. RS-422/485 Receiver no termination Figure 25 --- RS-422/485 Line termination resistance values Quatech DSC-200/300 User's Manual RS-422 Rt = 100 ohm 1/2W RS-485 Rt = 120 ohm 1/2W... -
Page 35: Rs-422/485 Peripheral Connection
The DSC-200/300 connects to peripheral equipment through two female D-9 connectors. The serial port connector definitions are listed in Figure 26. SignalDescription Figure 26 --- DSC-200/300 connector definitions Figure 27 --- DSC-200/300 output connectors Quatech DSC-200/300 User's Manual D-9 Connector Pin TxD+ TxD- RxD+... -
Page 36: 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. -
Page 37: Specifications
Threshold: Input resistance: Input current: Power requirements volts: Temperature: Humidity: Quatech DSC-200/300 User's Manual PCI, 32-bit bus, 5-volt only IBM-compatible computers approx. 5.5" x 3.5" 16750 with 64-byte FIFOs Two female D-9 connectors SP491 or compatible 2V min. with 50-ohm load (RS-422) 1.5V min. -
Page 38: Troubleshooting
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 DSC-200/300's warranty. Computer will not boot up. - Page 39 DSC-200/300 User's Manual Revision 1.21 March 2004 P/N: 940-0145-121 Quatech DSC-200/300 User's Manual...