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The 

V-R191P-SDI

 is a 19inch high resolution LCD panel that is the perfect fit for your DTV monitor needs. The unit 

offers a flexible input configuration without the need of special adapters or control boxes. This model has standard 
inputs with active loop through on each connection for SDI (ITU-R601), composite video, and Y/C (S-Video). For your 
computer graphic applications, this unit also has a scaleable VGA input. As an added feature, a 10-bit analog output 
is available when using an SDI signal. Adjustments are made using convenient front panel controls.

V-R191P-SDI 

Users Guide

 

Marshall Electronics 

1

Product Overview

2

Features

• High Resolution wide screen can produce 16.9 million colors with 3.93 million pixels
• CRT style viewing radius - 190° in any direction provides superior visibility 
• Bright display for enhanced image quality in varying light and viewing conditions.
• 500:1 contrast ratio with response rates less than 16 ms results in excellent quality for moving images.
• 4:3 and 16:9 screen aspect ratios for DTV operations
• Standard Multiformat inputs
• When the SDI input signal is present, a standard 10-bit composite output is available
• Ready to install in standard EIA 19 inch rack
• Convenient front panel controls with dedicated input and ratio selections and adjustments.
•Three independent tally indicators annunciate up to seven states.
• Weighs only 14 lbs. - 

Up to 50 lbs. lighter than 19-inch CRT models.

Display (Viewing Area)

19” diagonal (14.82” × 11.85”)(37.64cm x 30.1cm) (4:3 Aspect Ratio)

Viewing Angle

190

°

 In any direction

Resolution (Dots)

1280H × 1024V / 3.93 million pixels

Dot Pitch

0.98 mm-H x 0.294mm-V

Pixel Response

>15 ms

Number of Colors

16.9 Million

Brightness (in cd/m²)

250 cd/m²

Contrast Ratio

500:1

System

NTSC/PAL auto detect

Inputs 

Composite-BNC 75

, Y/C (S-Video)-4 Pin Mini-din Female, 

SDI-BNC 75

, Scalable VGA HD-15 Female, 

Tally DB-15 Female, RS232-DB-15 Female, 12VDC-Conxall Female 

Outputs

Composite Active Loop-BNC, SDI Active Loop-BNC, Y/C (S-video) Active 
Loop-4 Pin Mini-din Female, 10-bit D/A out-BNC

Power required 

12VDC, 3.0Amps peak

           

   

V-R191P-SDI Dimensions

19.12”W x 13.8”H x 2.5”D (48.56cm x 34.98cm x 63.50cm)

V-R191P-SDI Approx. Weight

14 lbs (6.3kg)

V-PS12-3.3APower Supply Weight

1 lbs (0.45kg)

3

Specifications

4

Mechanical Information

5

Operational Setup

1. Unpack the V-R191P-SDI and accompanying V-PS12-3.3A power supply. Physically inspect for any damage that 
may have occurred during shipping. Should there be any damage, immediately contact Marshall Electronics at 800-
800-6608. If you are not located within the continental united states call +1 310-333-0606.
2. After inspection, install in your desired location of a standard EIA 19-inch equipment rack. Adequate ventilation is 
required when installed to prevent possible damage to the V-R191P-SDI internal components.
3. Connect required cables for signal input and output.

Please note that power must be applied to the V-R191P-SDI for all of the looped outputs to be activated.
All BNC connectors should be rated for 75

.

4. Plug the V-PS12-3.3A power supply into the A.C. source
5. Attach twist lock power connection from V-PS12-3.3A power supply to the back of the unit. 
6. Turn on the V-R191P-SDI by depressing the power switch located on the front of the unit.

6

Connectors

* All Outputs Require Power 
  to be applied for activation

SDI in 

Re-Clocked 

SDI Output

10-BIT D/A 
Composite 

Video Output

Converted 

from SDI 

Input

Active Com-

posite Output

Composite 

Video In

S-Video IN

4 Pin Din 
(Female)

Pin1 - GND
Pin2 - GND

Pin3 – Y in
Pin4 – C in

Pin1-Red IN  
Pin2-Grn IN  
Pin3-Blu IN   
Pin4-        
Pin5-      
Pin6-Gnd
Pin9-Gnd
Pin8-Gnd

VGA IN

HD-15 Female

Pin 9-
Pin10-
Pin11-
Pin12-
Pin13-
Pin14-HSync
Pin15-VSync

Pin1- Green 
Pin2- Red-
Pin3-Amber  
Pin4  Gnd  -        
Pin5-      
Pin6-
Pin9-
Pin8-

Tally IN

DB-15 Female

Pin 9-
Pin10-
Pin11-
Pin12-
Pin13-
Pin14-
Pin15-

S-Video Out

4 Pin Din 
(Female)

Pin1 - GND
Pin2 - GND

Pin3 - Yout

Pin4 - Cout

RS232 

Reserved 

for future 

application

7

Switch Settings and Indicators

12 VDC

 from 

V-PS12-3.3A 

power supply   
Left Pin - Pos

Right Pin- Neg

Power On/Off selection switch

Illuminates dim red when power is applied. Turns bright red when monitor is switched on

Source selections are memorized at power off 
and when the power source is removed.
To power the V-R191P-SDI with a remote mains 
switch, the power must be enabled on the 
V-R191P-SDI prior to switch off at mains.

Source selector switches for images displayed on screen

Selected source button will be illuminated

Color Bar On/Off selection switch 

Illuminates when bars are active. Bar signal type will change with video format NTSC/PAL

VGA RESOLUTION (FREQUENCY)

DISPLAY ASPECT

640 X 480 (60, 95, 85 Hz)

 4:3 / 16:9

800X 600 (60, 95, 85 Hz)

4:3 / 16:9

1024X 968 (60, 95, 85 Hz)

4:3 / 16:9

1280 X 920 (60 Hz)

16:9

1280 X 960 (60, 85 Hz)

16:9

     1280 X 1024 (60, 95, 85 Hz)

     4:3 / 16:9

     1600 X 1200 (60 Hz)

    16:9

Screen aspect switch 4:3 or 16:9 selector and indicators 

VGA screen aspect is determined by input signal see table to the left for pixel resolution to aspect relationship

Screen adjustments

TINT adjust is not available for PAL signal standards. 
TINT and COLOR adjust are not available for VGA signals

 16:9 Aspect 

4:3 Aspect

Tally Indicators

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