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DataTalker Owner’s Manual
96
Table 7-3 Data Channel Troubleshooting
Problem
Async Data Channel
Channel Device not
communicating with DataTalker;
composite link up with CD,,
CTS, XMT, RCV and RD LEDs
on
Async Data Channel device
losing data
Sync Data Channel
Channel Device not
communicating with DataTalker;
composite link up with CD,,
CTS, XMT, RCV and RD LEDs
on
Possible Causes
Incorrect channel parameter
settings
Channel device incorrectly cabled
Flow control not properly set
Incorrect channel parameter
settings
Channel device incorrectly cabled
Incorrect Data Type
Incorrect Clocking
Solution
1. Verify configuration of data
port (see Data Port
Configuration in Table 7-10).
2. Call Tech Support for
assistance (see Chapter 8).
1. See cabling diagrams in
Appendix B and C on both
DataTalker and data channel
device.
2. Call Tech Support for
assistance (see Chapter 8).
1. Verify flow control options for
the async data channel device
(see Table 7-10).
1. Verify configuration of data
port (see Data Port
Configuration in Table 7-10).
2. Call Tech Support for
assistance (see Chapter 8).
1. See cabling diagrams in
Appendix B and C on both
DataTalker and data channel
device.
2. Call Tech Support for
assistance (see Chapter 8).
1. Verify that sync device uses
HDLC or SLDC protocol, NRZ
encoding, and operates in full
duplex.
1. If sync device expects clock to
come from DataTalker on pins
15 and 17, set DataTalker
sync data channel to internal
clocking and set speed.
2. If sync device provides click to
DataTalker on pin 24,
confiugre sync data channel
for external clocking.