Nevion FRS-HD-CHO - Manual (Page 4)

FRS-HD-CHO Rev. 9
nevion.com | 4
1 Product overview
Figure 1: Simplified block diagram of the FRS-HD-CHO card
1.1 Product description
The base version of the Flashlink FRS-HD-CHO is a 2x1 HD/SD change-over module with a
frame synchronizer that can lock an HD-SDI or SD-SDI input to a black & burst or tri-level
reference signal. A de-glitcher ensures an always error-free output.
The change-over functionality covers numerous switching criteria that analyses video and
audio integrity and content. The switching criteria are placed into several logical groups, each
of which can have their own timing.
The FRS-HD-CHO has an extensive audio functionality, including audio cross point matrix,
channel swapping, relative audio delay, and audio gain. The module is also well suited for
Dolby-E.
An extension - and even a separate version - exists that will also handle change-over
switching on ASI inputs, but then without the frame synchronizer, de-glitcher, and audio
functionality.
The user parameters of the card can either be changed by switches on the board, or by the
Multicon Gyda system controller.
1.1.1 Product versions
This product comes in three versions: The base model FRS-HD-CHO for HD/SD-SDI, the
FRS-HD-CHO-ASI with a selectable SDI or ASI mode, and an ASI-only version called ASI-
CHO-2x1-PB.
The ASI-CHO-2x1-PB is not designed to be upgradable to an FRS-HD-CHO or an FRS-HD-
CHO-ASI. The user interface for ASI-only is however much reduced compared to the SDI
capable versions with frame synchronizer and audio embedding/de-embedding, making the
ASI-CHO-2x1-PB very easy to understand, set up, and use.
Some FRS-HD-CHO modules can be upgraded to FRS-HD-CHO-ASI with a software key
(for a nominal fee). These modules can be recognized by the way they respond to a
„?‟
command on the serial communication bus, and the way they present themselves in the
Multicon Gyda configuration page. If the
reply to the „?‟ command contains a line that says
“Serial rev 1728201000000001” (the actual 16-digit number will be different) and a line that
says “HW rev 1.1”, or there are two lines at the very bottom of the Multicon configuration
page that looks like below, the module can be upgraded to the -ASI version with a software
key: