User manual

CHAPTER 3: RARITAN REMOTE CLIENT (RRC) 37
Noise Filter
The video output of graphics cards are transmitted in analog form, and are susceptible to electrical and
interference noise. IP-Reach's advanced circuitry can filter out these small, false, and unintended signal
variations, thereby optimizing picture quality and bandwidth consumed.
Higher: Noise Filter settings instruct IP-Reach to transmit a variant pixel of video only if a large color
variation exists in comparison to its neighbors. However, setting the threshold too high can result in the
unintentional filtering of desired screen changes.
Lower: Noise Filter settings instruct IP-Reach to transmit most pixel changes. Setting this threshold too
low results in higher bandwidth utilization.
Note:
Lower Noise Filter settings (approximately 1 to 4) are recommended. Although
higher settings will stop the needless transmission of false color variations, true and
intentional small changes to a video image may not be transmitted.
Analog-to-Digital Settings
The following parameters are best left to IP-Reach to automatically detect (on the RRC Menu Bar, select
Video > Auto-sense Video Settings), but a brief description of each is included here.
• PLL Settings: If the video image looks extremely blurry or unfocused, the PLL Settings for clock
and phase can be adjusted until a better image appears on the active Target Server.
- Clock: Horizontal sync divider to produce pixel clock. Controls how quickly video
pixels are displayed across the video screen. Changes made to clock settings cause the
video image to stretch or shrink horizontally. Odd number settings are recommended.
- Phase: Phase values range from 0 to 31 and will wrap around. Stop at the phase value
that results in the best video image for the active Target Server.
• Color Settings: Gain control can be thought of as contrast adjustment. Offset control can be thought
of as brightness adjustment.
- Red Gain: Controls the amplification of the red signal.
- Red Offset: Controls the bias of the red signal.
- Green Gain: Controls the amplification of the green signal.
- Green Offset: Controls the bias of the green signal.
- Blue Gain: Controls the amplification of the blue signal.
- Blue Offset: Controls the bias of the blue signal.
- Link Color Controls: Makes all the gain slide adjusters move in unison when any one
color’s gain slide is moved and all the offset slide adjusters move in unison when any one
color’s offset slide is moved.
• Sense video mode changes automatically: Determines whether IP-Reach will automatically
update the video image being sent RRC each time it detects a change in video resolution or
refresh rates at the Target Server.