Cobalt Digital COMPASS 9081 HD_SD Frame Sync - Manual (Page 19)

9081-OM (V4.6) 9081 PRODUCT MANUAL 1-15
Introduction
9081 Functional Description
9081 Rear I/O Modules
The 9081 physically interfaces to system video and audio connections using a
Rear I/O Module. Figure 1-7 shows a typical 9081 Rear I/O Module.
All inputs and outputs shown in the 9081 Functional Block Diagram (Figure
1-1) enter and exit the card via the card edge backplane connector. The
Rear I/O Module breaks out the 9081 card edge connections to industry
standard connections that interface with other components and systems in the
signal chain.
In this manner, the particular inputs and outputs required for a particular
application can be accommodated using a Rear I/O Module that best suits the
requirements. The required input and outputs are broken out to the industry
standard connectors on the Rear I/O Module; the unused inputs and outputs
remain unterminated and not available for use.
The full assortment of 9081 Rear I/O Modules is shown and described in
9081 Rear I/O Modules (p. 2-4) in Chapter 2, “Installation and Setup”.
Figure 1-7 Typical 9081 Rear I/O Modules
BNC connectors for
coaxial video signals
In this example, an RM20-9081-B Rear
I/O Module provides a connection
interface for the signal types shown here.
Phoenix terminal
block connectors for
3-wire and 2-wire
terminations
Where a maximum of five BNC connections can suit
particular I/O requirements, a “split” Rear I/O Module offers
maximum card density within the frame by accommodating
two cards using a module occupying no more area than a
standard module. The RM20-9081-A/S shown here
accommodates the signal complement shown for two
adjacent 9081 cards. (Split modules are identified by “/S” in
the part number.)
Viewed from rear, the right column
of BNC connectors accommodates
the right-most card, with the left
column accommodating the
adjacent card to the left.
In this example with two 9081 cards
in slots 1 and 2, the right column
serves 9081, slot 1 and the left
column serves 9081, slot 2.