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01-0868-401B 12/02
Troubleshooting
Remote Unit Problems
Problem:
No sign-on message on the remote terminal after power-up.
Solutions:
■
Verify that the cable between the terminal and the TDR60 are properly connected.
■
Ensure that the remote unit and the TDR60 are turned on and plugged into an active AC
outlet.
■
Verify that the baud rate and parity of the remote unit communications package match the
DVB setting of the TDR60 remote control interface. DVB settings are 9600 baud, 8 data bits,
no parity, and 1 stop bit.
Teletext Problems
Problem:
No teletext or teletext incorrectly displayed.
Solutions: Ensure that VBI Format is set to OFF and that VBI Teletext Mode is set to ON —
when VBI Format is set to On, teletext will not display correctly.
Video Problems
Problem:
No video output
Solutions:
■
Ensure that the TDR60 is powered up and has been initialized.
■
Ensure that the TDR60 and the video monitor are powered up and properly connected.
■
Verify that the Eb/N
0
level meets minimum requirements for link operations.
■
Verify that the Status LED is illuminated. If the Status LED is not illuminated, follow the steps
for Troubleshooting Loss Of Sync.
■
Ensure that the video cabling to the encoder at the uplink is properly connected.
■
Ensure that the associated encoder is configured for the video input source that is being
provided.
Problem:
Jerky or freeze frame video output
Solutions: Verify that the aggregate data rate does not exceed the transport clock rate. If
necessary, increase the encoder transport clock rate, or reduce the encoder
compressed video bit rate.
Problem:
No video or audio output
Solutions:
■
Ensure that the encoder, the TDR60, and the audio and video monitors are powered up and
have been initialized.
■
Ensure that the cabling from the TDR60 to the audio and video monitors are properly
connected.
■
Ensure that the video and audio cabling to the encoder at the uplink is properly connected.
■
Ensure that the polarity of the satellite downlink transport data between the encoder and the
modulator is set correctly.
■
Ensure that the stream PID values for the encoder and the TDR60 match.
■
Verify that the E
b
/N
0
level meets minimum requirements for link operations.
■
Verify that the Status LED is illuminated, indicating that the demodulator, decoder, and
transport stream are all locked. If the Status LED is not illuminated, follow the steps for
Troubleshooting Loss Of Sync.
■
Ensure that the service selected is the service you want to receive.
Video and Audio Sync Problems
Problem:
Video output does not sync with audio
Solutions: Adjust the video delay slightly. Changing the video delay may cause audio
instability if not properly adjusted.
