Block Diagram; Architectural Specifications - Rane DEQ 60L Manual

INPUT A
+
2
-
3
1
A
B
ADC
INPUT B
+
2
-
3
1
C
D
INPUT
LEVEL

Architectural Specifications

The equalizer shall be analog-controlled, with all control provided
on the front panel using 45 mm DEQ 60L linear sliders with dust
dams. A detented and guaranteed 0 dB point shall be provided on
these linear sliders. All signal processing shall be accomplished us-
ing high accuracy digital signal processing. The equalizer shall be
a two channel model, and each channel shall have thirty (30) fre-
quency bands located on standard ISO center frequencies. Each
band shall have a bandwidth of 1/3-octave. The equalizer shall be
front-panel switchable between two modes, Proportional-Q or
Perfect-Q. The equalizer shall have a front panel switch selecting
cut-only or boost/cut operation.
Low and high cut filters shall be provided with 12 dB/octave
slopes and adjustable corner frequencies. Tone controls shall be
provided for low, mid and high frequencies. The tone controls
shall have a range of +6 dB to off.
DIGITAL SIGNAL PROCESSING
(EACH CHANNEL)
INPUT
dBFS
OL
+12
+6
+3
0
-3
-6
-12
BYPASS FILTERS
BOOST / CUT
Perfect-Q Proport-Q ±6 ±12
30 BAND GRAPHIC
WITH
PERFECT-Q
25 Hz
CONTROL
A / B
BYPASS ALL
OUTPUT
dBFS
OL
+12
+6
+3
0
-3
-6
-12
CUT-ONLY
SPLIT-BAND
FULL-CUT
TONE CONTROL 12 dB / OCT.
20 kHz LOW MID HIGH LOW
CUT
Input and output level controls shall be provided for each
channel. Input and output peak dBu meters shall be provided.
The unit shall provide an automatic passive bypass feature when
power is not available, and active bypass switches for each channel
when the unit is operating.
The inputs and outputs shall be active balanced/unbalanced
designs terminated with XLR, 1/4" TRS (tip-ring-sleeve), and
Euroblock terminals. The outputs shall have equal output imped-
ances. RFI filters shall be provided.
The unit shall meet UL agency safety requirements and be
powered from an internal universal power supply (100 to 240
VAC) via a rear panel IEC connector. The unit enclosure shall be
constructed entirely from cold-rolled steel. The unit shall be sup-
plied with ears for mounting into a standard 3U EIA rack.
The unit shall be a Rane DEQ 60L Graphic Equalizer.
GRAPHIC EQUALIZER

Block Diagram

A
B
VC
FAIL-SAFE RELAY
DAC
C
D
Vc
FAIL-SAFE RELAY
OUTPUT
LEVEL
HIGH
CUT
DEQ 60L
OUTPUT A
+
2
-
3
1
+
OUTPUT B
+
2
- 3
1
+
Data Sheet-3