Comtech EF Data M&C Software for Windows - Manual (Page 35)

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Chapter 3. TROUBLESHOOTING
This chapter describes troubleshooting possible problems and methods for solving them.
3.1 EIA-232 to EIA-485 Converters
Note: The KST-2000L is not configured for redundant operation.
Since this application currently supports redundant KST-2000A/B configurations, multi-
drop EIA-485 is the only method of simultaneously communicating to both devices in the
redundant configuration.
The EIA-232 COM port on the back of a PC must be converted to the EIA-485 hardware
protocol for reliable communication to take place.
Note: Choose a converter that keeps all EIA-485 line drivers enabled at all times.