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8083XDS-AD Analog and SD-SDI XDS Encoder
5.4
CIRCUIT DESCRIPTION
Page 5-8
5.4.1
Front Panel Display and Pushbuttons
A 16 digit alphanumeric display and a keypad with ten buttons is contained
on a separate circuit card (5220) which is connected to the main circuit
board via a 20 conductor ribbon cable.
To perform a keyboard test and lamp test of the front panel LEDs hold
down the SETUP key on power up. The front panel display will show:
00
KEY
As you press various key combinations, different LEDs will illuminate. The
front panel display will show the keyboard scan codes for each key
combination pressed. Table 5-2 below shows the SCAN code for each
key. To exit this test mode, remove and re-apply power to the unit.
CAPTION ON/OFF
KEYER FLD 2
SHIFT
Table 5-2: Keyboard Scan Codes
5.4.2 Analog Composite Monitor 9000CME
Digital video from the main circuit board is fed up the header to the
9000CME submodule, where it is converted to composite analog video.
Two video output amplifiers are provided to drive analog monitors. The
9000CME is capable of encoding NTSC or PAL video types, depending on
the input digital video format.
The 9000CME also contains a caption decoder capable of viewing all
caption streams, text data streams and many XDS packet types, including:
•
Program Rating Advisories (V-Chip) – separate display from other XDS
•
Station Name and Call Letters
•
Length of Show and Time Left in Show
•
Program Type
•
Program Description (4 lines)
Revision 1.0.2
01
KEYER FLD 1
01
DECODER
02
SELECT
05
06
SETUP
07
TECHNICAL DESCRIPTION
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