F: selector buttons, G: recall button, H: ir sensor – BSS Audio Prosys PS-8810 Owner's Manual User Manual
Page 18: I: rs232 connector, Ps-8810, Front panel

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PS-8810
DIGITAL SIGNAL PROCESSOR
When a parameter is changed, a small indicator (A) momentarily
lights to show the parameter has been stored in FLASH memory.
Another small indicator (B) is illuminated whenever any
parameter is varied from its value within the currently selected
Preset.
Front panel control may be 'locked out' via IQ for Windows
software. The display reads “Lxx” rather than the usual “Pxx” to
indicate the locked status of the controls.
Two front panel buttons are provided to switch between 'Presets',
select 'Scenes', change 'IQ address', and choose RS232 baud
rate.
The RECALL button, when pressed and held for longer than 2
seconds, causes the display to cycle through the available
choices until it is released; first to 'Scene select' mode, then
'Address select' mode, 'Baud rate select' mode, and finally back
to 'Preset select' mode. For more information about these
features please refer to the Hardware Installation & Connections
section - chapter 9.0.
Once the RECALL button is released, the PRESET UP and DOWN
arrow buttons are used to adjust the parameter. On releasing the
RECALL button, the user has two seconds to begin using the UP
or DOWN arrow buttons before the display changes back to
default. When the parameter is adjusted to the desired value,
press the RECALL button again to store the setting.
Infra Red (IR) sensor for use with remote control systems such as
Philips Pronto. Do not cover! The power indicator will flash
when IR commands are received.
Serial port connector for connection to computer using RS232
protocol.
Front Panel
f: Selector Buttons
A
B
g: RECALL Button
Selector Buttons and Digital Display
h: IR Sensor
i: RS232 connector