Extron Electronics PVS 204SA User Guide - Manual (Page 29)

3-3 PVS 204SA Switcher • Operation and Setup
PRELIMINAR
Y
f
Min/Max LED — This red LED indicates when the range limits for the power
amplifier level, Aux/Mix volume, or input gain level have been reached. See
“Setting Up and Optimizing the Audio”, later in this chapter, for details.
It lights as follows:
• When setting up input levels
• When the PVS reaches the min./max. amplifier level
• When the PVS reaches the min./max. Aux/Mix level
g
Aux/Mix level encoder — This recessed rotary encoder allows front panel
adjustments specific to the Aux/Mix input level. The encoder has 16 positions
per revolution, with each position equivalent to a 1 dB step (-18 dB to +24 dB
range).
h
Power amp level adjustment encoder (“Level”) — This recessed rotary
encoder allows front panel adjustment to all inputs (global) or, when used in
conjunction with any selected input button, allows individual channel gain
adjustment. The encoder has 16 positions per revolution, with each position
equivalent to a 1 dB step (-10 dB to +10 dB range).
i
Clip LED — This red LED lights when the output amplifier is clipping.
N To reduce the risk of damaging equipment, turn the power amp level down
(counterclockwise) when this LED is lit.
Setting Switcher Modes
The PVS 204SA has two selectable switcher modes: single switcher and separate
switcher. The default setting is single switcher mode.
Single switcher mode
This mode makes the PVS function as a 4x1 switcher. In single switcher mode,
the RGB video output is inactive when composite video input is selected, and the
composite video output is inactive when RGB video input is selected. Either RGB
video OR composite video is output to the projector or display device, depending
on which signal format is selected.
N
The switcher should be set to single switcher mode if an MLC is connected.
Separate switcher mode
In this mode, both signal formats (RGB and composite video) are active at the same
time, allowing RGB video AND composite video to be output to the projector or
display device. The two modes can be toggled by front panel or RS-232. For details
on RS-232 control, see chapter 4, “Serial Communication”.
Setting the single switcher mode via the front panel
1 . Press and hold input selection buttons 1 and 3 simultaneously for 4 seconds
(see figure 3-3). All the input selection LEDs blink twice.
2 . Release the buttons. The switcher has enabled single switcher mode and only
one LED remains lit.
INPUTS
1 2 RGB 3 4 VIDEO
Press and hold buttons 1 and 3
simultaneously for 4 seconds.
All input selection LEDs blink twice
to indicate that single switcher mode
has been enabled. Release the buttons.
INPUTS
1 2 RGB 3 4 VIDEO
One LED remains lit.
INPUTS
1 2 RGB 3 4 VIDEO
Figure 3-3 — Setting single switcher mode via the front panel