Table of Contents
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Features
Audio switching models
Inputs — These switchers input 2, 4, or 6 stereo audio signals, balanced or
unbalanced, on 3.5 mm, 5-pole captive screw terminals.
Outputs — The selected audio input is buffered and output, balanced or
unbalanced, on a 3.5 mm, 5-pole captive screw terminal.
Audio gain/attenuation — Users can set the input level of audio gain or
attenuation (-18 dB to +24 dB) via the RS-232 link or from the front panel, to
be compatible with a wide range of line level (from -20 dBV to +4 dBV).
Individual input audio levels can be adjusted so there are no noticeable
volume differences between sources (figure 1-2) and for the best headroom
and signal-to-noise ratio. This function also eliminates the need for separate
preamps or attenuators when the switcher is used with professional (higher
line level) and consumer (lower line level) audio equipment.
dBu
dBv
+10
+8
+7
+5
+4
+2
+1
-1
-2
-3
-5
-7
-8
-10
-12
-14
Low Audio
Output Level
dBu
dBv
+10
+8
+7
+5
+4
+2
+1
-1
-2
-3
-5
-7
-8
-10
-12
-14
High Audio
Output Level
Figure 1-2 — Audio gain and attenuation
Audio follow — Audio can be switched with the corresponding video input.
Audio follow switching can be done via front panel control or under RS-232
remote control.
Audio breakaway — Audio can be broken away from its corresponding video
input signal. Audio breakaway switching can be commanded only under
RS-232 remote control.
All switchers
Inputs — The video switchers input up to 2, 4, or 6 RGB video signals on five
female BNC connectors.
Outputs — The selected RGB video input is output on five female BNC connectors.
Bandwidth — Bandwidth is 350 MHz (-3 dB). This high bandwidth allows the
switchers to switch all of the high-resolution video signals with no loss of
signal quality.
Input signal sensing — The switcher continuously monitors all inputs to sense
when the input signal is active or inactive. The switcher reports changes in
the status of each input (active to inactive or inactive to active) on the RS-232
port.
Consumer VCR
Audio
Inputs
1
2
3
4
5
6
AUTO SWICH
ACTIVE
SW RGBHV A Series Switcher
Audio
Inputs
Pro CD Player
SW RGBHV Series Switchers • Introduction
dBu
dBv
+10
+8
+7
+5
+4
+2
+1
-1
-2
-4
-5
-7
-8
-10
-12
-14
Output
Level
SW6 RGBHV A
RGBHV & AUDIO SWITCHER
AUDIO
-dB
+dB
CONF/SAVE
Audio System
No Noticeable Volume
Differences Between Sources
1-3
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