Kramer Electronics VP-721DS About the Video Scaler, Input Selecton, Auto Button, Input Button

6ABOUT THE VIDEO SCALER

The Video Scaler is controlled via the Front Panel Buttons and its status determined by the Front Panel LED indicators. The VP-722DS may also be controlled via an external control device connected to its RS-232 port, which will be covered later in this manual.

Shown below are diagrams that indicate the main features of the Front Panels of the Video Scalers. Both models covered by this manual appear similar and their basic operation is identical.

VP-721DS	AUTO	SV	CV	PC	VGA SVGA XGA BYPASS	HORIZ VERT	HUE COLOR BRIGHT CONT	SHARP
Digital Video Scaler		INPUT			OUTPUT	SELECT	-------------	+

VP-722DS	AUTO	SV CV PC1 PC2 PC3 PC4	VGA SVGA XGA BYPASS	HORIZ VERT	HUE COLOR BRIGHT CONT	SHARP
Digital Video Scaler		INPUT	OUTPUT	SELECT	-------------	+

This following sections go through the Front Panel Buttons and what control they provide over the Video Scaler. It also provides information on the Status Indications given by the Front Panel LED’s.

7INPUT SELECTON

The Video Scaler’s Input can be chosen from the Front Panel in two ways:

Automatic Input Select Mode - the Video Scaler determines when a video signal is present at either the Composite Video or S-Video input connector and automatically selects that as the active input. If a signal is present at both inputs, priority is given to the S-Video input. E.g., this feature allows input selection to be done by switching power on or off to the source video devices.

Manual Input Select Mode - allows manual selection of which input video signal is chosen. Repeatedly pressing the button toggles through the available inputs:

a)VP-721DS = Composite Video, S-Video or PC.

b)VP-722DS = Composite Video, S-Video, PC1, PC2. PC3 or PC4.

Note – The PC Inputs are simply pass-through connections to the output and are not scaled.

7.1Auto Button

Pressing the Auto Button places the Video Scaler in the Automatic Input Select Mode.

AUTO LED – The Auto Button illuminates when the Video Scaler is in the Automatic Input Select Mode.

7.2Input Button

Pressing the Input Button allows manual selection of which input video signal is chosen. Repeatedly pressing the button toggles through the available inputs:

SV LED - The SV LED is illuminated when the S-Video input has been chosen by repeatedly pressing the Input Button until that source has been selected.

CV LED - The CV LED is illuminated when the Composite Video input has been chosen by repeatedly pressing the Input Button until that source has been selected.

PC LED (VP-721DS) - The PC LED is illuminated when the Bypass Mode has been chosen by repeatedly pressing the Input Button until that source has been selected. The Bypass LED also illuminates.

PC 1, PC2, PC3, PC4 LEDs (VP-722DS) - The PC1, PC2, PC3 or PC4 LED is illuminated when the Bypass Mode has been chosen by repeatedly pressing the Input Button until the corresponding PC Input has been selected. The Bypass LED also illuminates.

Kramer Electronics Ltd.

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