Motorola DCT 2000 用户手册
D C T 2 0 0 0 I n s t a l l a t i o n M a n u a l
A p p e n d i x B
D i a g n o s t i c s
This section describes the diagnostics designed to confirm proper installation of the DCT 2000.
The diagnostics include checking error states and signal integrity, as well as provisions to
identify the DCT 2000 on the network and to verify communications with the headend. The
diagnostic information is displayed on the front-panel LEDs and the On-Screen-Display.
The diagnostics include checking error states and signal integrity, as well as provisions to
identify the DCT 2000 on the network and to verify communications with the headend. The
diagnostic information is displayed on the front-panel LEDs and the On-Screen-Display.
For diagnostics provided in this appendix:
§
All indicators are in decimal notation unless otherwise noted.
§
All signal-level and quality indicators are based on a 0 to 100% scale, unless otherwise
noted.
noted.
§
All screens self-refresh at a minimum rate of once every five seconds.
§
All sample displays are illustrative; actual data will differ from the examples.
A c c e s s i n g D i a g n o s t i c s
To access the DCT 2000 diagnostic mode:
1
Press
POWER
to turn on the DCT 2000.
2
Wait five seconds.
3
Press
POWER
to turn off the DCT 2000.
4
Press
SELECT
within two seconds. The DIAGNOSTICS Main menu (Figure B-1) is displayed
on the OSD and
d 01
is displayed on the front-panel LEDs. The DCT 2000 is now in
diagnostic mode.
5
Use the
CHANNEL
keys to select the desired diagnostic.
6
Press
CURSOR
<,
CURSOR
>,
SELECT
, or
ENTER
to execute the selected diagnostic.
7
To exit the diagnostic mode, press
POWER
. The DCT 2000 exits the diagnostic mode and
powers off.