Installation manual
operation 
8 
The transmitter is available   This is the normal operational state and indicates that the transmitter is 
ready to transmit data. 
9 
The transmitter is adjusting for 
optimal network timing 
This condition typically occurs when your DW4020 is first commissioned or 
the first time it is used for data traffic. This must occur before the Indoor 
Transmit Unit is able to transmit successfully. Typically, this process usually 
takes less than a minute. 
10 
The transmitter is unable to 
communicate with the Network 
Operations Center 
This condition indicates that the unit has stopped attempting to transmit user 
data because there were a number of failures in sending data to the NOC 
over the satellite link. This could be the result of weather conditions causing 
lost packets or return channel equipment failures in the NOC. 
11 
The transmitter is not available 
because the receiver software 
is out of date 
This condition indicates that the installed software version is not recent 
enough to operate on the network. New software will be required from time 
to time due to network infrastructure and capability upgrades and in order to 
maintain network efficiency and fix any known problems. The system will 
automatically update your software version to ensure that you can enjoy 
uninterrupted operation. If you do not use the DW4020 for a long period of 
time and miss the updates, you may need to contact Customer Care. 
12 
The transmitter is not 
receiving network control 
messages from the Network 
Operations Center 
This condition indicates a NOC equipment outage. This may be a transient 
condition and the system should recover automatically. 
13 
The transmitter is unable to 
range because it cannot 
communicate with the 
Network Operations Center 
Ranging is the process that adjusts your satellite transmitter timing 
and power. Your satellite transmitter conducts ranging as needed to 
ensure that it can communicate successfully with the Network 
Operations 
Center. This condition can indicate any of the following: 
• The NOC is not receiving ranging information from the transmitter. This 
may indicate a transmit problem at the NOC. This should get cleared in a 
few minutes. 
• The transmitter is unable to achieve enough transmit power to send 
ranging information to the NOC. Make sure that the power supply is correct. 
The power supply should be Part #1031105-0001. 
• The transmitter is sending incorrect timing data because the wrong zip 
code or latitude/longitude information was entered during installation. 
• The outdoor transmitter unit (ODU)--that is, the antenna--is not operating 
properly or is not properly connected to the ITU. Please ensure that the 
transmit cable is securely fastened to the Transmit Unit. 
14 
The transmitter is not available 
because ranging has failed 
This condition indicates that the transmitter is not operational because 
ranging has failed. Ranging is the process that adjusts your satellite 
transmitter timing and power. Your satellite transmitter conducts ranging as 
needed to ensure that it can communicate successfully with the Network 
Operations Center. The ranging failure may happen due to the antenna 
becoming misaligned or if repeated attempts to range do not succeed. This 
condition may also be caused due to adverse weather conditions. In rare 
cases, this may also indicate NOC issues but should clear within a few 
minutes. If your system was operational in the past and you see these 
messages repeatedly, you can try to force range by performing the 
Connectivity Test. 
15 
The transmitter is waiting for a 
ranging request to be 
processed by the Network 
Operations Center 
This condition occurs if the system is busy adjusting power and timing for 
other users. This process may take up to a minute or more. 
16 
The transmitter is waiting for a 
transmit request to be 
processed by the Network 
Operations Center 
This condition occurs when the system is unable to provide transmit 
bandwidth. This occurs when many users sign-on simultaneously. It should 
clear in a few minutes automatically. 
17 
The satellite transmitter is 
unable to obtain an available 
transmission rate 
This condition occurs if the transmitter cannot successfully range. Ranging is 
the process that adjusts your satellite transmitter timing and power. Your 
satellite transmitter conducts ranging as needed to ensure that it can 
communicate successfully with the Network Operation Center. A possible 
cause is that the transmitter could not achieve enough power to transmit. 
This is likely caused because the antenna is not accurately pointed. 
However, it may also be a transmitter power problem. Check the power 
supply and make sure that it is Part # 1031105-0001. 
18 
The transmitter is requesting a  This condition can occur during installation when the Antenna Pointing 
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