Quatech RS-422 User Manual
Also see for DSCLP-200: User manualSpecificationsUser manual
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Contents
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7.3 XCLKThis is the output clock signal used by the transmitter portion of the UART. It isgenerally connected to the UART's own receive clock input (RCLK). This is done byconnecting pins 3 and 6 of the jumper block. If desired, XCLK can be transmitted toan external source over the AUXOUT line by connecting pins 5 and 6 of the jumperblock. Figure 21 shows how to select the XCLK mode.Loopback XCLK to RCLK Transmit XCLK on AUXOUTCTSAUXINXCLKRTSAUXOUTRCLK123654 CTSAUXINXCLKRTSAUXOUTRCLK123654Jumpers J5, J7Figure 21 --- XCLK selection7.4 AUXIN/AUXOUT LoopbackThe AUXIN signal is an input from the external device, and connecting it to theAUXOUT signal provides for a loopback mode of operation. In other words,whatever signal is transmitted by the external device over the AUXIN line will be fedback to the external device over the AUXOUT line. This mode is accomplished byconnecting pins 2 and 5 of the jumper block. Figure 22 shows how to select thisloopback mode.Loopback AUXOUT to AUXINCTSAUXINXCLKRTSAUXOUTRCLK123654Jumpers J5, J7Figure 22 --- AUXIN/AUXOUT loopbackDSCLP-200/300 User's Manual 27 |
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