Hughes DW4020 Installation Manual page 51

Table 6: Transmit status (TxCode) messages and corrective actions
Numeric Message Displayed
TxCode
0 The transmitter is not
connected to the receiver
1 The transmitter has been
disabled by the Network
Operations Center
2 The transmitter has been
placed in test mode by the
Network Operations Center
3 The transmitter is locking to
the receive carrier
4 The transmitter is not
responding to commands sent
from the receiver
Chapter 3 • The User Interface
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1031484-0001 Revision 2
If corrective measures do not solve a problem, contact technical
support.
TxCode 8 means the transmit modem is working properly. It is
the code you will see most of the time.
Note: Remember that IRU refers to the receive modem, and that
ITU refers to the transmit modem.
Comments
This status will occur only if the Indoor Transmit Unit (ITU) is not connected to
the Indoor Receive Unit (IRU). It can result for the following reasons:
• The 25-pin parallel cable is not properly connected to the Indoor Receive Unit
or Indoor Transmit Unit: Check the cable and make sure the ends are securely
fastened.
• Indoor Transmit Unit failure. The Indoor Transmit Unit has failed and may need
to be replaced.
This condition occurs when the transmitter is not enabled. A transmitter may be
disabled for short periods of time by the NOC for service or troubleshooting. It
may also be disabled if the user discontinues the satellite service. If this
condition persists, it can only be corrected by requesting that the unit be
enabled.
This status requires no user action and this test usually completes in 15 minutes
or less. This condition occurs when the NOC places the transmitter into special
transmission modes to measure the performance of the transmitter. When in this
mode, the unit is unable to transmit normal user data to the NOC.
This condition occurs during initial startup or when the receiver is locking to the
receive signal. It is normal for this condition to persist for up to 10 seconds. If this
condition
persists for more than 10 seconds, try disconnecting and reconnecting the
receiver coaxial cable and wait 10 seconds. If the situation still persists, then the
Indoor Transmit Unit may need to be replaced.
This condition indicates that something is not operating properly in the
Receive/Transmit Unit configuration. Perform the following actions to attempt to
recover from this condition:
• Verify that the Indoor Receive and Transmit Units are securely connected with
a 25-pin parallel cable.
• Reset the IRU by unplugging the IRU power cord from the wall socket and then
plugging the power cord back into the wall socket. This will reset the Indoor
Receive and Transmit Units.
This condition could also be caused if the power supply is faulty. If this condition
cannot be resolved by following the steps listed above, then you may need to
replace the power supply, the Receive/Transmit unit cable and/or the Transmit
Unit.