Picolo

Picolo Junior 4

Picolo Pro 2

Picolo Pro 3

Picolo Tetra

Picolo Tymo

Picolo Alert

Picolo Diligent

Domino Iota

Domino Alpha 2

Domino Melody

Domino Harmony

Domino Symphony

Grablink Value

Grablink Expert 2

Grablink Avenue

Grablink Express

Grablink Quickpack ColorScan

Grablink Quickpack CFA

Grablink Full XR

Grablink Full

Grablink DualBase

Grablink Base

Description

Type	Integer
Description	Number of active video lines in the frame
"Set" effect	Sets the number of active lines
"Get" effect	Returns the number of active lines currently involved

Classification

Class	Channel
Category	Camera Timing
Level	Expert

Identifiers

String	Vactive_Ln
C, C++	MC_Vactive_Ln
.NET	MC.Vactive_Ln
Numerical	710

This parameter is expressed as a number of video lines.

An active line is, by definition, a video line where useful visual information can appear. Blanking lines take no part in the count of active lines.

In case of interlaced scanning, Vactive_Ln represents the number of active lines for both fields altogether. This is equivalent to the number of active half-lines per field.

In some cases of dual-tap structure, Vactive_Ln represents the number of active lines for both channels altogether.

This parameter is a measure of the height of the camera active window.

It is used to characterize area-scan cameras. It is meaningless for line-scan cameras.