Data Sheet-4
ECM 64e Block Diagram
Parameter Specification Limit Units Conditions/Comments
DSP Adaptive Acoustic Echo Canceller
Frequency Response 40 up to 20,000 Hz
Audio Processing Delay <3 ms Local to Remote Output
Tail Length > 150 ms
Total Echo Cancellation Up to 60 dB Receive State only
Adaptive Echo Cancellation 45 dB
Shipping: Size 6.5" x 5.0" x 2.5" 16.5 cm x 12.5 cm x 6.5 cm
..........Weight 2 lb 0.9 kg
ECA 2 Specifications
1k
0
MIC 1
MIC 2
MIC 3
MIC 4
Input LED
Driver
.
.
OL
Echo Canceller
In Out
Ref.
LINE IN
OUT 3
A/D PORTS 1-8
LEVEL & MIX CTRL
METE R
VU PORT
RW 232 DATA
NON-VOLA TI LE
MEMORY
MEMORY
ADDRESS
RJ11
RJ11
DAA
TX
RX
CONTROL
HYBRID CT RL.
TITO
RI RO
Module
DIGITAL HYBRID MODULE
-10dBu
-10dBu
USER HYBRID CT RL
Acoustic
Ctrl.
AEC CTRL
ON/OFF HOOK
VOL UP/ DWN
LEVEL
AEC
AEC
OUT
REF
OUT
1
2
3
4
MRP
AUX IN
+5V
.
.
+5V
OUT 2
Hybrid RX
Hybrid TX
DAC
CLK
DAT A
LD
WRITE
DAC
DAC
DAC
DAC
DAC
DAC
MSTR SET
MSTR OUT
DAC
CLK
DAT A
LD
WRITE
DAC
DAC
DAC
DAC
DAC
DAC
MSTR SET
MSTR OUT
DAC
CLK
DAT A
LD
WRITE
DAC
DAC
DAC
DAC
DAC
DAC
MSTR SET
MSTR OUT
DAC
CLK
DAT A
LD
WRITE
DAC
DAC
DAC
DAC
DAC
DAC
MSTR SET
MSTR OUT
DAC
CLK
DAT A
LD
WRITE
DAC
DAC
DAC
DAC
DAC
DAC
MSTR SET
MSTR OUT
Line I n
Mic Mi x
Hybrid RX
AEC
Aux In
Line I n
Mic Mi x
Hybrid RX
AEC
Aux In
Line I n
Mic Mi x
Hybrid RX
AEC
Aux In
Line I n
Mic Mi x
AEC
Aux In
AEC
AEC
LIMITER
Mic Mi x
Line I n
Aux In
Line I n
Aux In
Out 1
Mic Mi x
AEC Ref
10k
-10 dB
10k
-10 dB
Noise
Noise
Noise
Noise
Pink Noise
Ctrl
Out
NOISE CTRL
Noise
Line I n
Hybrid RX
Aux In
47k
Gen.
301
301
S/LD1 S/LD2
S/LD3
S/LD4
S/LD5
Ext.
Out 1
Mix
1
2
3
4
1
CTRL
1
PROGRAM
OUT 1
Phantom +12V
GAIN
46 dB34
SSM-2017
MIC 1 LEVEL
1k
0
GAIN
46 dB34
SSM-2017
MIC 2 LEVEL
1k
0
GAIN
46 dB34
SSM-2017
MIC 3 LEVEL
1k
0
GAIN
46 dB34
SSM-2017
MIC 4 LEVEL
EXT.
AEC REF.
RW 232 IN
RW 232 OUT
MRP / EXT.
LINE
PHONE
PHONE
RELAY
(OPTIONAL)
LINE ECHO CANCELLER
DTMF DECODING
RW 232
ADDRESS
RW 232
INTERFACE
PROCESSOR
DC AVG.
CONVERTERS
HYBRID RX
HYBRID TX
AUX INLINE INMIC MIX
OUT 1 OUT 2 OUT 3
FRONT PANEL
SIGNAL
Hybrid RX
(OPTIONAL)
AEC Ref Switch
LIMITER
Input LED
Driver
OL
SIGNAL
+10 dB
+10 dB
+10 dB
+4 dB
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