Tiernan TDR7, Manual

Page: 158 / 226

Chapter 6 146
Troubleshooting
Current
Faults
Only three types of problems generate a current fault. The TDR7
indicates that a current fault has occurred when it detects one or all of
the following events:
■
Loss of transport stream sync
■
Loss of demodulator sync
■
Loss of decoder sync
Current faults are reported real time, which means that only
conditions that are present at the time that you select the Current
submenu are displayed, regardless of what conditions have existed in
the past.
If the current fault conditions clear, the LCD displays
No Faults
after
you select the Current submenu. However, every current fault is
recorded in the fault history log.
If the Status LED on the control front panel is illuminated, no current
faults exist. If the Status LED goes out, at least one current fault exists.
If the Fault LED on the control front panel illuminates, one or more
current faults exist. If the TDR7 detects more than one current fault,
the problem that occurred last is displayed when you select
Current
from the Faults submenu; however, you can view the other faults by
pressing the
Inc (up) button. If you press the Inc (up) button, and the
display does not change, only one fault exists.
To determine if problems other than current faults exist, you must
view the fault history log.