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Transmit
READY LED
Pattern
Off
4 (or powered off)
On
8
2 Long,
1
1 Short
2 Long,
2
2 Short
2 Long,
11
3 Short
1 Long,
3
1 Short
1 Short
5
2 Short
10, 13, 14, 15,16, 21, 22, 23
3 Short
6, 7
4 Short
12, 17
Slow
9,18,19,20
Alternating
Fast
The ITU interface testing – This is a continuous fast blinking pattern, with the Transmit LED being the
Alternating
inverse of the Ready LED. No corresponding message.
Receive
READY LED
Pattern
Fast
Prior to downloading software– This is a continuous fast-blinking pattern, with the RX LED being the inverse
Alternating
of the Ready LED. No corresponding message.
Slow
1
Alternating
On
5
1 Long,
3,6
1 Short
1 Long,
4,7
2 Short
1 Short
0
1 Long,
2
1 Short,
1 Long
blinking. The blink patterns are described below for your
information.
Corresponding receive status message
Table 14: Receive modem READY LED blink patterns
Corresponding transmit status messages
Appendix C • Installing the DW4020 Manually
1031484-0001 Revision 2
93
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