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Chapter 3 • The System Control Center
48
1033295-0001 Revision 2
12 The transmitter is not
receiving network control
messages from the Network
Operations Center
This condition indicates a NOC equipment outage. This should 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 the satellite transmitter timing and power.
The 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 an incorrect ZIP code
or incorrect 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 DW6000. Please ensure that the
transmit cable is securely fastened to the satellite out connector.
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 the satellite transmitter timing and
power. The 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 the 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 the satellite transmitter timing and power. The 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.
Table 3: Transmit (TxCode) messages and corrective actions