Quatech RS-422 user manual

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Figure 13--- Windows 95 Device Manager

6.The DSCLP-200/300 serial ports are also listed under the group Ports (COM and LPT). Windows 95 does not assign COM1-COM4 to ports addressed at nonstandard locations. The DSCLP-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 DSCLP-200/300.

8.Click the "Port Settings" tab and then click the "Advanced" button. The DSCLP-200/300 driver will display a custom Advanced Port Settings control, which allows the ports UART compatibility mode and FIFO threshold levels to be configured. The threshold values of full-scale for the transmit buffer and 3/4-scale for the receive buffer shown below are optimal for most applications. Note that the FIFO option for each of the DSCLP-200/300's two ports is configured independently.

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DSCLP/SSCLP-200/300 User's Manual

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Contents DSCLP-200/300 Page Serial Number Declaration of Conformity Table of Contents General Information RS-422 or RS-485 Signal Line Termination Hardware ConfigurationFull-duplex/Half-duplex Operation Signal Connections2 AUX0SEL1,0, AUX1SEL1,0 J12,11,19,18 1 CTS0SEL, CTS1SEL J10,17RCLK0SEL, RCLK1SEL J13 4 TGL0SEL1,0, TGL1SEL1,0 J15,14,22,21 Enable Scratchpad Register SPAD, J2RXEN0SEL, RXEN1SEL J16 Clock Rate and Optional RegistersForce High-Speed Uart Clock X2 or X4, J4-J5 Enable scratchpad registersX4 mode Jumper/connector locations Hardware InstallationBase Address and Interrupt Level IRQ Address Map and Special RegistersInterrupt Status Register Enabling the Special RegistersQuatech Modem Control Register Quatech Modem Control RegisterEnhanced Serial Adapter Identification Options RegisterRR1 RR0 Clock Rate MultiplierWindows Millennium Windows ConfigurationsWindows Windows Windows Using the New Hardware Found Wizard Viewing Resources with Device Manager Page Page Page Windows NT Other Operating SystemsOS/2 DOS and other operating systemsQTPCI.EXE Basic Mode display QTPCI.EXE Expert Mode display Jumper/Channel correspondence External ConnectionsRclk RTS/CTS HandshakeAUXIN/AUXOUT Loopback XclkHalf-Duplex/Full-Duplex Selection Half- or full-duplex selection RS-422/485 Line termination resistance values Termination ResistorsRS-422/485 Peripheral Connection DSCLP-200/300 connector definitionsINTA# PCI Resource MapWith 64-byte FIFOs optional SpecificationsComputer will not boot up TroubleshootingDSCLP-200/300 Revision December