Supplying Power to Encoders............................................ .. 186 Serial Interface........................................................................... .. 187 I/O Circuit and Electrical Characteristics................................ 188 Connecting RS232 Devices................................................ .. 189 Connecting RS422 Devices................................................ .. 191 CAN Bus Interface........................................................................ 193 I/O Circuit and Electrical Characteristics................................ 193 Connecting CAN Devices..................................................... 194
General Notes and Tips on Signal Conditioning
195
Grounding and Shielding.............................................................. 196 Definitions of Different Ground Signals............................... 197 Grounding Signals............................................................... 197 Shielding............................................................................. 198 Avoiding Noise and Crosstalk....................................................... 200 Reducing Crosstalk .............................................................. 200 Wiring Up External Devices.................................................. 200 ADC Performance of dSPACE Boards............................................ 202 Definition of SNR................................................................. 202 Notes on Measuring Noise................................................... 203 Notes on Using AutoBox............................................................ .. 204 Grounding Scheme for AutoBox/Tandem AutoBox .............. 204 Influences on Board Performance Using AutoBox/Tandem AutoBox .............................................................................. 206 Filter Circuit for AutoBox/Tandem-AutoBox Power Supply .... 207
Troubleshooting
209
Hardware Problems...................................................................... 210 Checking the DS1103.......................................................... 210 Problems with Multiple Plug & Play Boards.......................... 211 Problems Using an Expansion Box via Bus Connection ......... 213 Problems Related to the Firmware....................................... 213 Problems with the Ethernet Connection..................................... .. 214 General Errors Using Ethernet Connection........................... 214 Restoring BIOS Setup of the Slot CPU .................................. 215 Problems When Setting Up the TCP/IP Protocol .................... 216
