Kramer Electronics TailorMade - Manual (Page 3)

3
K R A M E R
E lectron ics
MATRIX ROUTING SWITCHER
1.3 CREATING A MATRIX
The rear panel of the rack is 19” wide, on 3RU
high. The mains, RS232 and RS422 plugs 1RU,
and the useful area for the audio, video et RGB is
also 1RU. The BNC or audio connectors are shared
by 32, on horizontal bands which are 1RU wide.
We can house up to 3 bands in a 3RU area, i.e. 96
BNC or audio plugs. So, we can realize a 32x64
video matrix, or a 64x32…
When more, the rack has to be 6RU high. Then the
total number of plugs rise to 192, and permits
important dimensions. With a 9 RU rack, the
number is 288, etc.
The stereo audio plugs are also shared by 32, on
1RU band. We can house 3 bands, i.e. 96 stereo
audio plugs. For example, in a 3RU unit, we can
realize a stereo balanced 32x64 or 64x32, more in a
6RU, etc.
In YC mode, the capacity the divided by two ; in
component mode, by three ; in RGBHV mode, by
five.
1.4 VIDEO SECTION
The video section in an area with cards including
the input and outputs plugs, the buffers, the
switchers, the outputs 75 Ohms amplifiers, and the
controllers. The input cards (called QMI), and the
output cards (called QMO), own four edge
connectors to get the power supply and the service
signals by the internal rail.
Each cards has 32 BNC connectors for in or out.
1.5 RGBHV SECTION
RGBhv architecture is the same as the video
section :
Each card can support the R, G, B, H or V, and is
simultaneously controlled.
The input and output impedances is a 75 Ohms on
BNC, and the bandwidth is 350 MHz minimum.
1.6 AUDIO SECTION
The architecture of the audio path is different.
There is no module as for the video, but traditional
cards, directly connected on the internal bus. On
this bus transit the stereo audio signals, and also the
power distribution and the service signals.