Advanced Setup Procedures

Encoder Set Up

This section provides details for advanced set up options for a VNC 200 encoder.
• Fine-tuning of input parameters — See “Fine Tuning a Source (manual
overrides)”
• Creation of custom input modes — See “Creating a custom input mode”
• Changing video compression — See “Bandwidth Management”
• Managing bandwidth usage — See “Bandwidth Management”
• Changing audio compression — See “Audio Compression”

Advanced Source Setup

For most applications, it is recommended that the source input of a VNC 200 be set to
auto mode. This enables the device to detect the electrical and timing characteristics of
the input signal and determine the exact source type. It will then invoke the appropriate
input parameters for optimum processing of that source.
This also has the advantage that if the input source changes to another source type (for
example, if the source input is derived from a source switcher) it can change input setup
automatically without any user intervention.
While the auto mode will work with most standard video and graphics standards, there
are some circumstances (particularly with analog sources) where some additional fine-
tuning may be required. For example, when the source:
• Is an RGsB (sync on green) or YPrPb source type
• Has Macrovision® copy protection
• Does not have a completely standard signal format,
In extreme circumstances, it may even be necessary to create a custom input mode. For
example, when a source:
• Is completely non-standard
• Has a poor quality signal
NOTE: The advanced source setup procedures described here are only required
for analog sources. For digital (DVI) sources, the input mode should always
be set to auto.
VN-Matrix 200 Series • Advanced Setup Procedures 55