Extron electronic VS50 SL Folheto

Page 1

DIP Switch positions are defined in the table
below.
Abbreviations: CSync = Composite Sync
H = Horizontal, V = Vertical

Switch

Description

ON  

OFF  

¬

1

Output Sync Polarity

Negative

Follow Input

2

Original/Processed Sync

Original

Processed

3

H/HV BNC Sync

CSync

H Only

4

Shift Function

Disable

Enable

5

Shift Mode

Test

Normal

6

Operating Mode

Slave

Master

Use the diagram below as an aid to connecting input, output and
ShiftLock

TM

 cables to the VS50 SL Video Shifter. The video (RGB)

cables are routed directly from the source to the destination device.
However,the sync cables must be routed through the VS50 SL as shown
in the diagram. If connecting more than one VS50 SL, the ShiftLock

TM

connectors may be connected to allow a Master/Slave setup as shown
in the upper left corner of the diagram.

VideoShift

TM

 is a technique in which the displayed video image is slowly

shifted horizontally and vertically in a clockwise (rotating) direction.
Gradually shifting the position of the video image in this manner reduces
"burn-in" damage to the CRT which can occur when intense images are
allowed to remain in the same position for extended periods.

ShiftLock

TM

 is a feature that enables synchronization of the VideoShift

TM

capability of two or more devices. Input and output ShiftLock

TM

 connectors

allow VideoShift

TM

 devices to be connected (daisy-chained) enabling the

"Master" device to control VideoShift

TM

 for itself and all "Slave" devices.

The model VS50 SL Video Shifter includes both VideoShift

TM

 and

ShiftLock

TM

 features. The operating characteristics of the VS50 SL are

controlled by the position of the six switches on the DIP switch module.
The DIP switches are externally accessible and the switch positions are
briefly defined in the table on the facing page. The following descriptions
and specifications are provided as an aid to understanding the operating
mode of the VS50 SL as a function of the DIP switch settings.
1. Original Sync Mode (DIP switch 2 (SW2) = ON):

A. When set for separate H&V out (SW3 = OFF):

a. If input = separate H&V,

H/HV out = H in,V out = V in

b. If input = composite sync (CS),

H/HV out = CS in, V out = V stripped from CS in

B. When set for Composite Sync out (SW3 = ON):

a. If input = separate H&V,

H/HV out = Composite sync, V out = Gnd

b. If input = Composite sync,

H/HV out = CS in, V out = Gnd

2. Processed Sync Mode (SW2 = OFF):

A. When set for separate H&V out (SW3 = OFF):

H/HV out = H processed, V out = V processed

B. When set for CS out (SW3 = ON):

H/HV out = Composite sync, V out = Gnd

3. Output sync polarity:

A. Output sync is negative when CS output selected (SW3 = OFF)
B. Output sync is negative when Negative sync selected (SW1 = ON)
C. Follow input polarity when Follow Input is selected (SW1 = OFF)

(Note: For CS input, both H&V sync will be negative)

4. Processed sync timing specifications:

A. Delay from original sync (Shift Function = disable [SW4 = ON]):

75 micro-seconds for Vertical Sync
310 nano-seconds for Horizontal Sync

B. Shifting range (from Shift Function = enable position [SW4 =OFF]):

±20 micro-seconds for Vertical Sync
±25 nano-seconds for Horizontal Sync

5. Shift timing specifications:

A. Shift Mode = Test (SW5 = ON) = 4 seconds/rotation
B. Shift Mode = Normal (SW5 = OFF) = 5 minutes/rotation

TM

ON

ON

TM

TM

V

IDEO

S

HIFT     WITH 

S

HIFT

L

OCK

Extron • VS50 SL • User’s Guide

Page 2

Extron • VS50 SL • User’s Guide