Silicon Laboratories SI2493/57/34/15/04 - Manual (Page 256)

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10.6. Debugging the DTE interface
A hardware-based serial RS232 monitoring product, such as the Parascope Plus, is an invaluable tool for
debugging the DTE/DCE Interface. It captures and records details of DTE - DCE interaction. Hexadecimal and bit-
shifted views are possible, and it timestamps every character exchanged with much greater precision than a
software-based monitor. It is sold by FETEST at http://www.fetest.com.
Figure 50. Debugging the DTE Interface
To PC
Printer Port To
Power To
DCE
Silabs IsoModem eval. board
Feline WinXL serial transaction log. Timestamp of highlighted char.