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Chapter 3 • The User Interface
1031484-0001 Revision 2
43
Receive Statistics
The Receive Statistics screen contains information about how
the receive modem is processing frames. It contains the following
fields. See Figure 37.
• Receive Status - displays receive modem status messages.
Click on
Receive Status to view a list of receive status
messages. Click on a receive status message to learn more
about it.
3 The receiver is not locked to a signal If the DW4020 had been operating previously, this status is
probably due to inclement weather conditions and will be
corrected when the weather improves. This condition can also
indicate that the IRU is unable to receive the signal from the NOC.
This is also associated with a signal level less than 30. This
occurs if there is a weather outage at the user location, a NOC
outage due to inclement weather or other reasons, a misaligned or
faulty antenna, or faulty cabling. If this keeps happening under
normal weather conditions, make sure the power supply is correct.
The power supply should be Part # 1031105-0001. If the power
supply is correct, try power-cycling the DW4020 by unplugging the
power cord from the wall outlet and then plugging it back in.
4 The receiver is locked to the wrong network This condition should only be seen during installation and occurs
when the receiver is locked to a signal, but the signal ID does not
match the ID that was assigned to the user during commissioning
or the ID that was entered by the installer during manual pointing.
If this occurs during normal operation, it may be due to the user
changing acquisition parameters, including frequency and/or
location of satellite, or the antenna becoming misaligned.
5 The receiver is operational This is the normal operating state where the receiver is receiving
data from the NOC. Only when the receiver is in this state will the
transmitter operate correctly.
6 The receiver is not detecting a signal This condition occurs when the IRU is not detecting any type of
radio signal from the antenna. This could indicate that the cabling
between the receiver and the antenna is faulty or that the receiver
itself is faulty. Check that the cables are firmly connected on the
DW4020. Also, make sure that the power supply is correct. The
power supply should be Part # 1031105-0001. Try power-cycling
the DW4020 by unplugging the power cord from the wall outlet
and then plugging it back in.
7 The receiver is locked to an unknown
network
This condition should only be seen during installation and occurs
when the receiver is locked to a signal but there is no DIRECWAY
Network ID on that signal. If this occurs during pointing or
commissioning, the antenna has not been pointed correctly. If it
occurs during normal operation, it may be due to the user
changing acquisition parameters, including frequency and/or
location of satellite, or the antenna becoming misaligned. The
former condition can be corrected by re-commissioning the site.
The latter requires an antenna repointing.
Table 7: Receive code (RxCode) messages and corrective actions