Network Technologies ST-C5KVM2ARS-1000S VIDEO ADJUSTMENTS Automatic Video Quality Adjustment

NTI XTENDEX Extenders

VIDEO ADJUSTMENTS

Automatic Video Quality Adjustment

Video quality is broken down into “general video quality” for brightness and sharpness of the images, and “color skew” for how the colors align with each other on the monitor. All general video quality adjustment is done automatically while color skew is adjusted manually as described in the following sections. Test patterns for color skew adjustment are provided on the CD (see below). The automatic general video quality adjustment is calibrated for unshielded twisted pair cable. For shielded cable fine adjustment may be necessary and this can be done from +/- push buttons on all models without a keyboard or from keyboard keys using Command Mode on models that support a keyboard. Video Quality Adjustment settings are automatically stored in the XTENDEX. Settings will be restored each time the XTENDEX is powered-ON.

Note: If the cable is changed after making fine video quality adjustments or color skew adjustments (below), the XTENDEX will restore these settings to factory default and fine adjustments with the new cable may be necessary.

Fine Video Quality Adjustment for Video-Only Models

It is possible that on initial startup the image on the monitor will not be as crisp as the image normally is or the colors may not appear as they normally would. The colors may also be skewed, or out of alignment as they appear on the monitor. This is due to the frequency characteristics of the CAT5 cable and differences in cable types that can be used (i.e. shielded vs. unshielded cable and CAT5 vs. CAT6 cable). Models without keyboard support include a “Mode” button for the following functions:

¾fine adjustment of the general video quality

¾color skew adjustment (alignment of red, green, and blue signals on the monitor)

¾update DDC information between the monitor and CPU

¾select the active microphone (between local and remote units)

Test Patterns for Color Skew Adjustment

To verify the need for and effect of color skew adjustment using a test pattern specifically designed for your display setting, browse the CD this manual was found on and click on the “test-pattern-nXm.pdf” file that matches your current video resolution. Follow the instructions below to make adjustments as needed.

+(Increase)

Mode button

Depending upon what mode the XTENDEX is in, the “+” (plus) and “-“ (minus) buttons can be pressed to make the adjustment. A “Mode” LED is provided to indicate what characteristic is being changed.

(Decrease)

Mode LED

Front View of ST-C5V-1000S

Figure 10- Video Adjustment buttons

Note: The Local and Remote units must be connected and communicating in order for the mode button to function.

The chart below describes the video quality changes that can be made with the Mode button and the associated indication provided by the Mode LED.

Mode Button

Action	LED Indication	Press + or – to effect:
At power ON	Dark (LED OFF)	General Video Quality
First Press	Red	Red Skew
Second Press	Green	Green Skew
Third Press	Orange	Blue Skew
Fourth Press	Green Flashing	DDC update
		(press + or – to update)
Fifth Press	Red Flashing-	Active microphone
	rapid or slow	Flash rapid= remote
		Flash slow= local
		(press + or – to toggle
		which is active)
Sixth Press	Dark (LED OFF)-	repeat cycle

Note: After pressing the Mode button, if there is a pause in button activity for 30 seconds or more, the feature will return to a power-ON state with the LED OFF.

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