Grass Valley iTX Output Server 2 v.2.6 - Manual (Page 41)

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iTX Output Server 2
Channel Configuration Guide
Configuring Nielsen Watermarking
The Nielsen watermark is an inaudible cue tone in the audio stream of the channel output
signal. In the USA and Canada, the Nielsen watermark is detected by devices that provide
information for television audience measuring.
Both Nielsen watermarking version 2 (N2) and version 4 (NW) are supported. Either format
can be inserted individually or both can be inserted simultaneously into the data stream.
Note: Unlike N2 watermarking, NW processing does not support the
overwriting of audio codes that are present in the stream before the
watermarking process begins. Instead, the watermark engine leaves
space for a second (and possibly a third) Final Distributor Service ID in the
program band.
To configure Nielsen Watermarking on audio output:
1 Open the Output Server 2 user interface for the channel you want to configure, as
described in Accessing the Output Server 2 User Interface , on page 31.
2 Go to Configuration > Watermark tab.
3 Check Enable Watermarking On Audio Output.
The Nielsen Watermark Encoder Configuration panel appears.
4 In the Audio Output Group field, enter the output group to which you want to apply
the watermark.
5 In the Process Type field, select one of the following:
• N2
• NW
• Both
6 In Service ID field, enter the Nielsen channel ID number.