Grass Valley 8981NR - Manual (Page 13)

8981NR Instruction Manual 13
Configuration
Configuration
The 8981NR can be configured locally using onboard switches or remotely
using the 8900NET network interface GUI or a networked control panel.
Refer to the following sections for configuration instructions:
• Configuration Summary ( page 13 )
• Local Onboard Module Configuration ( page 17 )
• Remote Control and Monitoring ( page 20 )
• Control Panel Configuration ( page 33 )
Operation of these control types is explained in detail in their respective
sections of this manual.
Configuration Summary
This section provides a summary of all parameters that can be configured
on the 8981NR module.
Table 3 on page 16 provides a summary in table
format of all parameters and their ranges, default values, and remote, local,
and control panel function names and locations for setting each value.
Noise Filter Controls
Noise controls for two different noise reduction methods—recursive and
median— targeted at different sources of noise, are provided on the
module.
Recursive Filter
Recursive filtering is effective for low levels of wide-band (random) noise
that have no frame-to-frame correlation. In this method of filtering, the
input video data is mixed with a portion of the recursive filter output that
is delayed by exactly one frame only if its value is with an adjustable noise
threshold level of that output. The portion amount is set by the recursion
coefficient from none to 100% (an output freeze).
When recursive filtering is enabled, two controls become available:
• Noise Threshold Level – adjustment should be made just slightly
higher than the peak noise level.
• Noise Coefficient – adjustment should be made for minimum accept-
able noise suppression.
Both of these adjustments should be set as low as acceptable to minimize
motion blurring artifacts.