Two Technologies TechTerm TT1R2, Technical Reference Manual

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Troubleshooting 28
Terminal not receiving or displaying correct characters
Possible Cause:
Parity settings incorrect
Solution:
Change PARITY parameter to correct setting
Possible Cause:
Data bits incorrect
Solution:
Change DATA BITS parameter to correct setting
Possible Cause:
Incorrect BAUD rate
Solution:
Change BAUD parameter to correct setting
Possible Cause: Handshaking between host and terminal
Solution:
When using handshaking, verify that the wiring between the host and terminal is
correct, that you have the HANDSHAKE parameter enabled and that the
handshake line from the host is asserted
When not using handshaking, make sure you have the HANDSHAKE parameter
disabled
Possible Cause:
Reversed polarity, improper wiring or wrong cable type
Solution:
Check cable and connector wiring
Terminal displays PE character
Possible Cause: Incorrect parity setting
Solution:
Change the PARITY setting on the terminal to match the host or vice versa
Possible Cause: Handshaking between host and terminal
Solution:
When using handshaking, verify that the wiring between the host and terminal is
correct, that you have the HANDSHAKE parameter enabled and that the
handshake line from the host is asserted
When not using handshaking, make sure you have the HANDSHAKE parameter
disabled
Terminal generates continuous sound while pressing key
Possible Cause: Handshaking between host and terminal
Solution:
When using handshaking, verify that the wiring between the host and terminal is
correct, that you have the HANDSHAKE parameter enabled and that the
handshake line from the host is asserted
When not using handshaking, make sure you have the HANDSHAKE parameter
disabled
Terminal displays double characters
Possible Cause: Echo turned on
Solution: Disable ECHO parameter