Hughes DW4020, Installation Manual, Page: 123 / 137

Appendix C • Installing the DW4020 Manually
110
1031484-0001 Revision 2
DW4020 status
information via the
serial port
The DW4020 has no serviceable parts. However, you may be able
to debug units with help from the network operations center
(NOC). You access the menus below via the serial port, just as
when you set up the DW4020.
Verifying correct
DW4020 operation You can verify that the DW4020 unit is receiving and processing
data by following the steps given below.
1. Enter A at the Main Menu to access
Satellite Interface
Statistics .
2. At the Satellite Interface Stats submenu enter
A
to select
Display Main Statistics
. In the display that appears (see
Figure 85), check if frames are being accepted.
The
Frames Received
and
F-error
values indicate the
DW4020 is detecting frames and correctly receiving and
demodulating an outroute signal.
Note the
Signal Quality Factor
is also reported; if the SQF is
below 31, the antenna must be repointed.
The
Receive Status
and
Transmit Status
fields report whether
the receive and transmit modems are operational. If they are
not operational or available, antenna pointing is not possible.
The Rx and Tx codes have the same meanings as explained in the
LED flashing code tables above.
Signal Quality Factor: <83>
Frames Received: <181>
F-error: <0>
Addresses Open: <2>
Receive Status: <The receiver is operational. (RxCode 5)>
Transmit Status: <The transmitter is available. (TxCode 8)
Figure 85: Display Main Statistics