Marshall Electronics V-R44P User manual

V-R44P Instruction Sheet

Marshall

http://www.LCDRacks.com • e-mail: [e-mail]

Broadcast Multimedia Division

Side View

2.0”

Rear View

The V-R44P is a rack mountable unit that offers four 4" high-resolution active matrix LCD panels. Each of the four 480
× 234 pixel screens has it's own set of controls for color, tint, contrast, and brightness. Each panel has it's own input
with loopthrough capability, a self-powered 3 color tally system and auto-recognition of NTSC or PAL video formats.
This unit is only 2 rack spaces high, and can be tilted up to 90 degrees while rack mounted, making it the smallest video
monitoring system of its kind. Like all of the V-R Series, this unit is constructed of steel and aluminum, and comes com­plete with power supply and owners manual.

The operation of the V-R44P is fairly straightforward, however, please take note of the following:

1. The V-R44P has been designed to fit in a 2U space on your rack. It is important to use 4 screws to hold the

ears to the rack. Be certain that the ears are aligned vertically, this is important to the tilt function (see
back page).

2. Each LCD Panel comes with a protective plastic film that must be removed by carefully lifting the film from

the corner and peeling it off. Be certain not to apply any pressure on the LCD panels, they are fragile and can
break. Scratched, cracked or broken LCD screens are not covered by our warranty.

3. The V-R44P uses 12VDC, 5.0amp regulated power. Be certain that these specifications are met when using a
power supply other than the one supplied to you by Marshall Electronics. The center pin on the coaxial power
connector for the V-R44P is the POSITIVE terminal and the outside ring is NEGATIVE. Any battery operation
of the V-R44P must have this polarity configuration.

4. The Video inputs on the rear of the panel are 75 Ohm self-terminated. The loop through feature uses active
components and is always active as long as power is supplied to the unit.

5. Each screen has the capability to automatically detect NTSC or PAL signals. Each screen is independently
controlled allowing the user to view a PAL signal on one screen and an NTSC signal on the other.

6. The tally system on the V-R44P is accessed via the DB-15 connector on the back of the unit. The system works
by closing the contacts between a ground pin and the corresponding LED pin. The system is self powered, DO
NOT GIVE POWER TO THE PINS. The pinout is as follows:

4” LCD

Active Matrix

3.23" × 2.43"
each panel

0.171mm x

0.264mm

480H x 234V

NTSC/PAL auto

recognition

300 cd/m²

19.125W x

3.43H x 2.0D

12 VDC

3.0 Amps

Display Viewing Area Dot Pitch Inputs Brightness Dimensions

Picture

Elements

Power

Consumption

Monitor 1
Monitor 2
Monitor 3
Monitor 4

Green

Pin 1
Pin 6

Pin 11

Pin 5

Red
Pin 2
Pin 7

Pin 12
Pin 10

Yellow

Pin 3

Pin 8
Pin 13
Pin 15

PINS 4, 9 and 14 ARE
COMMON GROUNDS

MMaarrsshhaallll

7. Before the tilt function can work properly, it is important that the unit be mounted correctly in the rack using
four screws and the ears properly aligned vertically.

The tilt function on the V-R44P is operated using the two shoulder screws located on each side of the unit as
shown in fig. 1. By placing your index finger and thumb on each side as shown in fig. 2, the V-R44P can be
tilted up or down. To tilt the unit up, place your thumb under the bottom screw and push on the top screw with
your index finger. To tilt the unit down, place your index finger on top of the top screw and push the bottom

screw with your thumb. DO NOT PUSH ON THE GLASS PORTION OF THE SCREEN TO TILT THE UNIT.

Warranty

Marshall Electronics warranties to the first consumer, that this V-R44P rackmount monitor will, under normal use, be
free from defects in workmanship and materials, when received in its original container, for a period of one year from
the purchase date.

This warranty is extended to the first consumer only and proof of purchase is necessary to honor the warranty. If there
is no proof of purchase provided with a warranty claim, Marshall Electronics reserves the right, not to honor the war­ranty set forth above. Therefore, labor and parts may be charged to you.

This warranty does not apply to product exterior and cosmetics. Misuse, abnormal service or handling, improper alter­ations or modifications in design or construction, voids this warranty.
No sales personnel of the seller, nor any other person is authorized to make any warranties other than those described
above, or to extend the duration of any warranties on behalf of Marshall Electronics, beyond the time period described
above.

Due to constant effort to improve products and product features, specifications may change without notice.

Shoulder Screw

location

fig. 1

fig. 2