Grass Valley PDR100 - Manual (Page 60)

Chapter 3 Mechanical Installation
3-36 PDR100 Installation
Analog Composite Input Circuit Board
The Analog Composite circuit board is optional, and can occupy various slots from
J3 to J13.
The Analog Composite circuit board, which is paired with the Decoder circuit board,
has seven plug jumpers and a four-position DIP switch for test and development
purposes. See Figure 3-33. In addition, J14 and J15 output clock signals related to the
incoming video signal (audio record clocks). This circuit board does not output the 27
MHz system clock that is required for audio playback.
Figure 3-33. Analog Composite Input Circuit Board Showing Plug Jumpers
DIP Switch Settings
The four-position DIP switch is used only for development purposes. All switches are
set to the open position for normal operation.
Audio Clock Signals
The two clock outputs are from the incoming video signal and, therefore, can only be
used as record clocks. In most applications there will only be one Audio circuit board
per Analog Composite Input circuit board (single video channel per board). Audio
output clock is the System Clock (27 MHz) and is provided by the Analog Composite
Output circuit board; audio output is usually from a separate Audio circuit board
adjacent to the Analog Composite Output circuit board. Figure 3-34 shows the cable
connection for a single Audio I/O circuit board.
J6
J5 J2
J3
J4
J11
J15
J14
J12
DIP
Switch