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manual abstract
These accessible configuration switches allow you to control baud rate, parity, word length, and flow control. An easy-to-read LED indicator displays status and operating condition. Housed in an ultra-miniature ABS plastic case, each Converter comes equipped with a DB25 female connector on the serial side and a DB25 male connector on the parallel side. 8 CHAPTER 2: Introduction 2.2 Features • Converts parallel data to serial data and vice versa. • Automatically selects parallel-to-serial and serial-to-parallel operation. • Automatically selects DCE/DTE modes. • Serial data rates to 38,400 bps. • No AC power required. • Supports both software and hardware flow control. • A five-state LED monitors status and diagnostics. • External configuration switches. • Ultra-miniature size. 9 SERIAL-PARALLEL CONVERTERS 3. Configuration and Installation The Converter is simple to install and extremely reliable. The following instructions will help you set up and install your converter properly. If you have any questions, please call Black Box Technical Support at 724-746-5500. 3.1 Configuration Switches The Converters each use a set of eight external DIP switches (see Figure 3-1) that allow configuration to a wide range of applications. Because all eight switches are in one externally accessible DIP-switch package, you don’t need to open the case for configuration. The configuration switches allow you to select data rates, parity, word length, and flow control. This section describes all switch locations, positions, and functions. 10 CHAPTER 3: Configuration and Installation Figure 3-1. The location of the configuration switches. 1 2 3 4 5 6 7 8 OFF DHS-8 Figure 3-2. The miniature configuration switch package. 11 SERIAL-PARALLEL CONVERTERS The Converters use a miniature configuration switch package. To configure your unit, use a small screwdriver and gently push each switch to its proper setting. The ON and OFF positions are shown in Figure 3-2. Default settings (noted with an asterisk) for the DIP switches are shown in the table on the following page. Set up the Converter by selecting the appropriate DIP-switch settings for your application. 12 CHAPTER 3: Configuration and Installation Position 1 2 3 4 5 6 7 8 Flow Control Hardware Software OFF* ON LED Enabled Disabled ON* OFF Parity/D. Bits/ S. Bit None/8/1 OFF OFF OFF* Odd/8/1 ON OFF OFF Even/8/1 OFF ON OFF None/7/2 ON OFF ON Odd/7/2 ON ON OFF Even/7/2 OFF OFF ON Odd/7/1 OFF ON ON Even/7/1 ON ON ON D. Rate (bps) 300 OFF OFF ON 600 ON OFF ON 1200 ON ON OFF 2400 OFF ON ON 4800 ON ON ON 9600 OFF OFF OFF* 19200 ON OFF OFF 38400 OFF ON OFF *Default setting. 13 SERIAL-PARALLEL CONVERTERS 3.2 Installation The Converter is very simple to install. Once you have configured the DIP switches, just plug your Converter into a standard cable and you’re ready to go. Figure 3-3 shows the proper connections. Figure 3-3. Typical installation. 14 CHAPTER 4: Reading the LED 4. Reading the LED Once your Converter is properly conf...
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