User's Guide

SB300 Series Modems User’s Guide
Page x Proprietary and Confidential 2110059 Rev 1.1
11. Multipurpose Interface Board .....................................................95
11.1. Introduction .............................................................................................. 95
11.1.1. Features............................................................................................ 95
11.2. Board Description..................................................................................... 96
11.2.1. Schematic......................................................................................... 96
11.2.2. Parts Layout ..................................................................................... 96
11.3. Power Supply ............................................................................................ 97
11.3.1. Voltage Adjustment.......................................................................... 97
11.3.2. Using Power from Host (DTE) ......................................................... 97
11.4. Connections............................................................................................... 97
11.4.1. PC Host (DTE) RS-232 Serial Connection ........................................ 97
11.4.2. Host (DTE) Connection for SB300/320............................................. 98
11.4.3. Host (DTE) Connection for SB301/302............................................. 98
11.4.4. Protocol Analyzer Connection .......................................................... 98
11.4.5. SB300 / SB320 Modem Connection.................................................. 98
11.4.6. SB302 Modem Connection............................................................... 99
11.4.7. SB220 Modem Conneciton............................................................. 100
11.5. Jumpers .................................................................................................. 100
11.5.1. Main Jumper Block ........................................................................ 100
11.5.2. Power Select .................................................................................. 101
11.5.3. SPK EN – Speaker Enable .............................................................. 101
11.6. Serial Breakout Box................................................................................ 101
11.6.1. DIP Switch..................................................................................... 101
11.6.2. Serial Connection Indicators ........................................................... 101
11.7. Test Points............................................................................................... 102
11.7.1. TP1 DISC ...................................................................................... 102
11.7.2. TP2 KEY ....................................................................................... 102
11.7.3. TP3 5V Adjusted............................................................................ 102
11.7.4. TP4 5V Setting............................................................................... 102
11.7.5. TP5 Debug for 5V / GND............................................................... 102
11.7.6. TP6 Unused ................................................................................... 102
11.7.7. Current Measurement ..................................................................... 102
11.8. Reset Button............................................................................................ 102
11.9. Initial Setup ............................................................................................ 103