Magenta Research MultiView AK500 Quick Reference & Setup Manual - page 8
MAGENTA MULTIVIEW™ SERIES
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Problem: Serial communication doesn’t work correctly.
Solution: • Are the serial devices connected properly? Are the serial
parameters correct for source/destination devices?
• Are the serial cables terminated correctly? If a null-modem
cable is used, it must be placed at the receiver end.
• When using RS-232 transmitters or receivers in daisy chains,
Cat5 switches, Cat5 distribution amps, or Multi-output
transmitters, the serial signal is a unidirectionally broadcast
mode only. In this mode, all other MultiView™ CAT5 Video
System devices must be the simplex serial type.
For assistance, contact Technical Support.
• The last device in a T4 transmitter or daisy chain configuration
must be a receiver unit with a terminated serial board.
See Appendix D for Serial board settings.
• For SA units a special unterminated version must be used
between transmitters and the last receiver with a standard End-
Of-Line unit installed at the end. SA units cannot be terminated/
unterminated in the field. This does not apply to SAP units.
• SA/SAP units have a fixed baud rate of 9600 bps and use 3 wire
(TX,RX,GND) signals only.
Problem: “Green shift” or “green washout” on multimedia signals.
Solution: The standard video/serial 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.
Some media servers, 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™ CAT5 Video System 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.
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APPENDIX A: Cable Pinning
Appendix A. Cabling Pinouts
Table A-1. HD15 video connector.
Pin
RGBHV
(VGA)
RGBS
RGsB
Com-
posite
SVHS
(Y/C)
YUV
1
Red +
Red +
Red +
C+
V+
2
Green+
Green+
Green+
C+
Y+
Y+
3
Blue+
Blue+
Blue+
U+
4
—
—
—
5
Gnd
Gnd
Gnd
6
Red-
Red-
Red-
C-
V-
7
Green-
Green-
Green-
C-
Y-
Y-
8
Blue-
Blue-
Blue-
U-
9
—
—
—
10
Gnd
Gnd
—
11
Gnd
Gnd
—
12
—
—
—
13
H Sync
C Sync
—
14
V Sync
—
—
15
Gnd
Gnd
—
Table A-2. Phoenix pinout:
PIN
Audio
SA Audio
Simplex
Serial
SPDIF
Audio
Composite
Video
S-Video &
Stereo Audio
Pin 1
Left Channel
Right Channel
Tx
Signal +
Signal +
Left Channel
Pin 2
Ground
Ground
ground
Signal -
Signal -
Ground
Pin 3
Right Channel
Left Channel
-
-
-
Right Channel
Pin 4
-
Shell
-
-
-
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