Quatech DS-102 Operation & User’s Manual

34, Quatech DS-102 VIII. TROUBLESHOOTING Listed here are some common problems and frequent causes of those problems. Suggestions for corrective action are given. If the information here does not provide a solution, contact Quatech Customer Service for technical support. Any unauthorized repairs or …

11, Switch on bit = 0 Switch off bit = 1 Serial 1 uses SW1 Serial 2 uses SW2 Factory default setting for Serial 1 --- 03F8 hex (COM1) ON 1 2 3 4 5 6 7 8 8 2 1 F 4 8 8 2 1 3 0 SW1 Factory default setting for Serial 2 --- 02F8 hex (COM2) ON 1 2 3 4 5 6 7 8 8 2 1 F 4 8 8 2 0 2 0 SW2 Example: 03E8…

29, FIFO INTERRUPT MODE OPERATION (16550 UART only) When the receiver FIFO and receiver interrupts are enabled: 1. The receive data interrupt is issued when the receive FIFO reaches the trigger level. The interrupt is cleared as soon as the receive FIFO falls below the trigger level. 2. The Int…

5, WARRANTY INFORMATION Quatech, Inc. warrants the DS-102 to be free of defects for one (1) year 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…

14, IV. SETTING INTERRUPT LEVELS (IRQS) The DS-102 interrupt circuitry allows each port to use any interrupt level in the range IRQ2 through IRQ7. The interrupt levels are selected using jumper packs J5 for Serial 1 and J6 for Serial 2. In Figure 7, the factory default settings for Serial 1 an…

26, MODEM CONTROL REGISTER This register is located at I/O address [base+4], and is used to control the interface with the modem or device used in place of a modem. This register allows the states of the "modem control signals" to be changed. These are DTR (Data Terminal Ready) and RTS …