Solid State Logic X-Logic Series owner manual 3 HF/LF Section G, Output Section H, A-2

X-Rack Owner’s Manual

A.2.3 HF/LF Section G

This section contains simple high and low pass filters as follows:

HF (Low Pass):	Frequency range 50kHz – 3kHz (–3dB point)
	Slope: 12dB/Octave
LF (High Pass):	Frequency range 30Hz – 600Hz (–3dB point)
	Slope: 18dB/Octave

The two filters can be switched into circuit independently.

A.2.4 OUTPUT Section H

This small section contains a tri-colour signal present indicator and two routing switches (‘REC L’ and ‘REC R’) which route the module signal onto a common internal record bus.

The signal present indicator measures signals immediately prior to the output amplifier. It will light GREEN for output signals above the lower threshold of –60dBu, AMBER for signals between +4dBu and +24dBu and lights RED for signals above +24dBu.

The record bus is not currently used but may be used by forthcoming X-Rack modules (such as the XR622 Mix/Monitor Module, due late 2006).

XR621

MIC

INST

IMP

IN LO Z HI

+48V

PAD

+12 dB +75

LINE

LINE

-20 dB +20

Ø

HF

9	6
30	4	G
IN
50	KHz 3
	LF
160	300
60
IN
30	600
REC	OUTPUT
L
	SIGNAL
REC		H
R
INSTRUMENT
GND
LIFT

Page A-2