Sound Performance Lab 2273 Power-Led, LED Level Display, Ad Ovl, Control elements, GainStation

Control elements

Power	POWER-LED
	This LED indicates that the GainStation 1 is connected to the
	proper AC current and switched on. If the tube stage is active
	when the unit is switched on, it can take several seconds before
	a signal can be heard—this time is necessary for the tube to
	reach operating temperature.

-30 0dB 9 18 Clip	LED Level Display
	The level display shows the peak level before output level
	control. A special circuit allows the LED‘s to vary in brightness
	to display in-between values. The -30 LED illuminates weakly at
	-30 dB and reaches full brightness at 0 dB. The 0 dB LED illumi-
	nates weakly at 0 dB and reaches full brightness at +9 dB and so
	on.
	The CLIP LED operates post-CLEAN GAIN stage and displays
	clipping at this point in the signal path. It will not react to tube
	saturation in the tube stage, since this can be a desired effect.

AD OVL	AD OVL
	This LED displays clipping in the internal AD converter and
	illuminates at approximately 0.5 dB before 0 dBfs. This LED
	should never illuminate when using the internal or an external
	converter—if it does, the output level must be reduced accord-
	ingly.
	If the converter is not being used or not installed, the AD IN 1
	MUTE switch should be activated, so that the output signal is no
	longer routed to the converter and the AD OVL circuit. Signals
	connected to AD IN 2 are also displayed by the AD OVL LED and
	cannot be switched off (they can only be disconnected).

18 GainStation 1