MultiView
250A
Receiver
Quick Reference
&
Setup Guide
Magenta Research
Magenta Research
934 Federal Road, Brookfield, CT 06804 USA
(203) 740-0592 FAX (203) 740-0596
934 Federal Road, Brookfield, CT 06804 USA
(203) 740-0592 FAX (203) 740-0596
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CHAPTER 1: Specifications
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1.Specifications
Cable Required: Category 5, 5e, 6 shielded or unshielded twisted pair
2. Introduction
2.1 Overview
Compliance: CE; FCC Class A, IC Class/class A
Magenta’s MultiView™ CAT5 Video System MultiView series extends VGA and
audio signals over ordinary Category 5 cable.
Video Support: to UXGA (1600x1200 @ 70Hz), RGBHV, RGB, Composite, S-
Video, Component Video modes
This manual covers the Magenta MultiView™ 250A CAT5 Video System Series
Receiver with Audio.
Maximum
Resolution and
Refresh Rate: At 250 ft. (76 m) or less, 1600 x 1200 at 70 Hz
For information on the respective transmitter unit, please refer to the appropriate
manual included with the transmitter.
Required Source
Impedance: Video OUT: 75 ohms;
Audio OUT (if any): 600 ohms maximum
WARNING
This equipment is not intended for, nor does it support, distribution
through an Ethernet network. Do not connect these devices to any sort
of networking or telecommunications equipment!
Required Destination
Impedance: Video IN: 75 ohms;
Audio IN (if any): 600 ohms minimum
2.2 Equipment You May Also Need
• 1/8” (3.5mm) Audio cable with RCA jacks.
• Video cable with HD15 connectors.
• CAT5 cable.
Audio
Characteristics: Channels: Right/Left summed;
Line Level 600 Ohm Unbalanced
2.3 Compatible Cabling
Connectors: (1) 3.5-mm, (1) RJ-45, (1) HD15 F
Temperature
CAT5 cabling for the MultiView™ Series must be pinned to the T568B wiring
specification (see appendix A). We also highly recommend that all CAT5 cables
be pre-terminated and tested. Cables terminated on-site or in an existing
infrastructure should be tested before use to ensure compliance with the T568B
Tolerance: Operating: 32 to 104°F (0 to 40°C);
Storage: -4 to +140°F (-20 to +60°C)
Humidity
Tolerance: Up to 80% noncondensing
specification. Using incorrectly terminated CAT5 cables can damage the Magenta
MultiView™ Series.
Enclosure: Steel
Power: +5 VDC @ 260 mA max
Consumption: 1.3 watts maximum
Size: 0.88 "H x 3.12"W x 3.75"D (2.2 x 7.9 x 9.5 cm)
Weight: 0.56 lb. (0.26 kg)
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CHAPTER 3: SETUP & INSTALLATION
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3. Setup and Installation
3.2.2 CONNECTIONS ON THE SINGLE-PORT VGA/AUDIO TRANSMITTER
3.1 Cabling Considerations
The single-port units with audio support video and audio signals over CAT5 cable.
The audio signal is line-level audio, and powered speakers are required. Figure 3-1
shows the MultiView™ Series UTx transmitter with Audio Transmitter connections,
and Figure 3-2 shows the MultiView™ MV250A receiver connections.
• We recommend mounting and connecting all cabling to the MultiView™ Series
components before applying power.
• Make sure that the CAT5 cable you intend to use has been tested to comply
with the T568B wiring specification (See Appendix A).
3.2 Making the Connections
3.2.1 CONNECTIONS AND SETUP IN GENERAL
This section contains figures showing connections with the specific MultiView™
Series models. In general, however, the connection and setup procedure at both
transmitter and receiver ends is as follows:
At the transmitter end (refer to the transmitter user guide) :
1. Connect the source video to the MultiView™ Series transmitter video input port,
which is an HD15 connector labeled SOURCE IN.
Figure 3-1. Transmitter connections on the UTx Universal Transmitter.
2. If desired, attach a local monitor via the local monitor port to LOCAL OUT.
3. Make your audio connections via the 1/8” (3.5mm) audio connector or phoenix
connector (transmitter model dependent).
4. Connect the CAT5 cable to the transmitter.
5. Apply power on the transmitter. The LED should light and, if there’s a local
monitor attached, a video image should appear on the monitor’s screen.
At the receiver end:
1. Connect the VIDEO OUTPUT HD15 connector to the display unit and attach
any audio cabling.
2. Connect a 1/8” (3.5mm) audio cable to the AUDIO OUTPUT connection.
3. Connect the CAT5 cable to the UTP INPUT connection.
4. Apply power. The LED should light and video should appear on the display
(make sure display is powered ON).
Figure 3-2. Receiver connections on the MultiView 250A.
5. To adjust video levels see Section 3.4.
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CHAPTER 3: Setup and Installation
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3.2.3 CONNECTIONS ON THE VGA/AUDIO MULTIVIEW T4
TRANSMITTERS
3.2.5 A TYPICAL MULTIVIEW T4 TRANSMITTER–RECEIVER APPLICATION
Figure 3-5 shows an application in which a MultiView™ Series T4 Transmitter is
linked to four MultiView™ Series Receivers.
The MultiView T4 four-port transmitter is used when
the same signal is distributed to multiple display
devices. You set it up and cable it the same as you
would with the single-port transmitter.
Figure 3-3. T4 Transmitter
connections with audio
3.2.4 A TYPICAL SINGLE-PORT TRANSMITTER–RECEIVER APPLICATION
Figure 3-4 shows a typical application in which the single-unit transmitter
is
connected over
receiver.
CAT5 to a
Figure 3-5. MultiView T4 Transmitter to Receiver connections.
Figure 3-4. Transmitter to Receiver connections.
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CHAPTER 3: Setup and Installation
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3.3 Configuration Settings
4. Troubleshooting
4.1 Common Problems
The MultiView™ 250A receiver is configurable for various video and audio modes. Note that a
compatible transmitter unit must be used at the source end. Reference the appropriate transmitter
user guide or call for technical assistance.
In most cases, nearly every issue with the MultiView™ Series can be resolved by
checking the CAT5 termination and making sure that it’s pinned to the
A dipswitch on the receiver unit is used to set the video and audio configuration mode. Table 3-1
below shows the configuration settings for SW1 (ON = down, OFF = up)::
568B wiring specification. However, there may be other problems that cause the system
to not perform as it’s designed. Below are solutions to the most common installation
errors.
NOTE:
There are no user serviceable parts inside the MultiView 250A receiver. All adjustments are
performed externally.
Problem:
Solution:
No video signal at the transmitter local port or at the receiver.
SW1 Configuration Settings
• Check that both units are powered.
• Ensure Cable Length Compensation Switches are set
correctly (See Section 3-4).
SW1 position
Setting
1
2
3
Signal
L/R Audio
• Make sure the CAT5 cable is terminated correctly per the
568B wiring specification.
• Is the display device powered on and functioning?
ON
ON
On
OFF
OFF
Off
RGBHV
Problem:
Solution:
Poor video quality.
ON
OFF
OFF
OFF
OFF
Video
• Have all receiver adjustments been finished (see section 3.4).
• Check all cable connections.
• Ensure Cable Length Compensation Switches are set
correctly (See Section 3-4).
Composite
S-Video
• The video signal’s refresh rate may be set too high for the display.
Component
Reset to a lower refresh rate in your monitor-configuration menu.
OFF
OFF
AV Mode
Composite
+ Stereo Audio*
Problem:
Solution:
Poor audio quality.
• Powered speakers are required. Make sure speaker power is
ON.
• Check input source levels from the source device. Make sure
the audio source is not overdriven or underdriven.
*AV mode carries all signals on the 15HD Video Output connector.
See Appendix A for pinouts
Table 3-1. MultiView 250A Receiver Configuration Settings.
3.4 Video Adjustment
Problem:
Solution:
“Green shift” or “green washout” on multimedia signals.
The standard video model is designed to function with DC
coupled signals in which the black level is referenced to 0 volts.
Nearly all VGA cards function this way.
The only adjustments required on the MultiView 250A receiver are the SW1 positions 4 and 5
which must be set to compensate for cable length. Using the table below as a guide, turn SW1
positions ON or OFF for best picture clarity (ON = down, OFF = up):
Some media servers and inexpensive VGA DA’s, however, provide
AC coupled signals and can cause a green color shift in the video.
This is a result of the sync clamping on the red and blue channels of
the video/serial model.
For five-component (RGB/H&V) AC coupled video, the
MultiView™ Series UTx Universal transmitter
has been designed with full DC restoration capability. This
problem is easily solved via a simple switch setting in the UTx
Transmitter. Please refer to the UTx Transmitter user manual.
Cable distance EQ settings
SW1 position
4
5
OFF
ON
OFF
OFF
ON
Short (0-75 ft)
Medium (75-150 ft)
Long (150-250 Ft)
OFF
Table 3-2. Cable Length EQ Settings.
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APPENDIX A: Cabling Pinouts
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Appendix A. Cabling Pinouts
Appendix A. Cabling Pinouts
Table A-2. T568B CAT5 pinout
Table A-1. HD15 video connector.
Pin RGBHV RGBS
RGsB
Com- SVHS YUV Composite
(VGA)
posite (Y/C)
Video
& Stereo
Audio
1
2
Red +
Red +
Red +
C+
V+
Y+
U+
Audio Left
C+
Green+ Green+ Green+
C+
Y+
3
Blue+
—
Blue+
—
Blue+
—
Audio Left
4
5
Gnd
Red-
Gnd
Red-
Gnd
Red-
6
C-
Y-
V-
Y-
U-
Shield
C-
7
Green- Green- Green-
C-
8
Blue-
—
Blue-
—
Blue-
—
Shield
9
Table A-3. 1/8” (3.5 mm) Audio Connection
10
11
12
13
14
15
Gnd
Gnd
—
Gnd
Gnd
—
—
Pin
Channel 1 Channel 2
—
Tip
+
—
H Sync C Sync
—
Ring
+
V Sync
Gnd
—
—
Sleeve
-
-
Gnd
—
Note: The stereo audio input at the transmitter is summed and output as
mono audio on both channels at the receiver.
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