Table of Contents
Advertisement
Appendix A
Download LED Indicators
LED Indicators Displayed During a CVT Download
Understanding the LED Indicator Sequence in CVT Downloads
The following table shows an example of a CVT download sequence of front panel
LED displays that appear after AC power is applied to the DHCT.
Note: The front-panel alphanumeric LED displays that appear on the Explorer
DHCTs may change for each stage of the DHCT software download process.
Therefore, in the following table, the LED displays that correspond to certain stages
of the download process may be repeated or skipped, as noted in the Description
column. In other words, the stages do not always occur in the order shown.
If the DHCT only has a POWER LED indicator, the appropriate blink patterns are
listed in the Power LED Indicator column.
Stage
Alphanumeric
LED Indicator
1.
2.
3.
4.
116
POWER LED
TV Monitor
Indicator
The light is
off.
Solid on, then
off. The light
is off as the
DHCT boots
into the OS.
The light
blinks once
every half-
second.
The light
blinks once
every half-
second.
Description
The "wave" appears each time the DHCT
resets. The DHCT is initializing and testing
the system. The wave provides a visual cue
as to when to press buttons to force
auxiliary functions.
The rotating border appears when the
DHCT boots into the OS.
Fr.LA appears if the DHCT can tune to the
last known good frequency in NVM and
acquires the CVT.
Go to stage 9 of this table.
If the DHCT cannot acquire the CVT
through a known good QAM frequency, it
scans the recommended QAM frequencies.
The LED displays FR.00 through FR.09 as
the DHCT checks each of the ten
recommended QAM frequencies.
Go to stage 6 of this table.
734375 Rev H
Advertisement
Table of Contents
