Rane ECS User manual

Manual-1
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ENGINEERED CONFERENCE SYSTEMS
Overview
Typically, a complete ECS system is comprised of one
ECB 6 Base unit and one or more ECM 8 Mixer units, with
ECS 6 Stereo Expansion Modules as required, and usually
one or more ECS 1 Echo Canceller Modules. [Performing
Plain Old Telephone Service (POTS) type teleconferencing
requires an additional digital hybrid (not supplied)]. And if
remote diagnostics and programming are desired, then the
addition of a Rane RPD 1 Programming & Diagnostics
unit is necessary.
The ECS Operating Manuals for these units are split into
two booklets — one for ECS hardware and one for
RaneWare® software. Neither booklet includes service
information. Should any unit require repair, contact the
Rane factory. Telephone, fax and web info is on the rear of
this manual.
ECS Hardware Manual
This manual begins by explaining the options and
internal settings for each unit, since all optional accessories
must be installed and all internal jumpers set before installa-
tion of the units into equipment racks. Next are detailed
descriptions of the front and rear panel features, followed by
detailed block diagrams and discussions, as well as dia-
grams showing the signal flow making up the critical
“offsets,” or thresholds used by ECS. Then comes instruc-
tions on Power, Audio & Data Connections, as well as how
to set each unit’s device address. Complete electronic and
mechanical specifications are found in the appendices.
Information on installing and running the control
software are found in the second booklet entitled: ECS
RaneWare Operators Manual.
Contents
CUSTOMIZING ECS .............................................................. 2
ECB 6 BASE .............................................................................. 3
ECS 6 STEREO EXPANSION MODULE ...................... 7
ECM 8 MIXER ........................................................................... 9
ECA 1 ECHO CANCELLER MODULE ......................... 13
POWER, AUDIO, AND DATA CONNECTIONS ....... 14
SETTING THE DEVICE ADDRESS .............................. 16
APPENDIX—SPECIFICATIONS ..................................... 17
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Manual-2
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Before installing ECS components, there are a few options
that need to be determined first. All but one of these require
removing the top covers before installation.
ECS 6 STEREO EXPANSION MODULE
See the description and installation diagram of the ECS 6
Stereo Expansion module into the ECB 6 Base on page
Manual-7. The ECS 6 installs by seating the card onto factory
installed standoffs on the motherboard.
ECB 6 BASE WITH BOTH STEREO AND MONO PORTS
The ECB 6 Base and ECS 6 Stereo Expansion module are
shipped with jumpers in the stereo position. Both mono and
stereo sources may be used by changing the Mono Jumper
blocks as described on page Manual-7.
Mono Input signals must be wired to both the Left and
Right Inputs of the Base. Both Left and Right Port Outputs
produce the same mono signal. See the Figure below for an
example, and page Manual-15 for mono source cable wiring.
ECM 8 MIXERS WITH ECA 1 ECHO CANCELLERS
Mixers may or may not require Echo Cancellers installed
in each one. Placing the Echo Canceller in each mixer reduces
the number of acoustical echo paths for a multi-microphone
system, thereby improving the audio quality of the system.
This method of echo cancelling is called MZEC™ MultiZone
Echo Cancelling (see page Manual-9).
An Echo Canceller is recommended for each Mixer when
being used for teleconferencing.
The ECA 1 installs by seating the module onto factory
installed standoffs on the motherboard as shown on page
Manual-13.
ECM 8 MIXER PHANTOM POWER
The ECM 8 Mixer is shipped with internal Phantom Power
switches in the “on” position. To change, remove the top
cover and look for the switches in the middle left of the circuit
board, as shown on page Manual-13.
ECM 8 MIXER POST-GATE/PRE-GATE SWITCH
When installing a sound system with zones, it is best to use
a Post-Gate mix of the Mics to create a Zone from the AUX
Output. This maintains the NOMM level for the Mixer. See
Applications - System 4 in the RaneWare Operators
Manual..
RaneWare note: the AUX Output is not turned On or Off
from the Mixer Output control.
This switch is set to Post-Gate at the factory. For installa-
tions requiring recording, place this switch in the Pre-Gate
position. This provides a more natural sounding recording.
This switch is located inside the ECM 8 Mixer. See the
diagram on page Manual-13.
ECM 8 MIXER TERMINATION SWITCH
If four or more Mixers are used with a Base, set the
termination switch (rear panel) on the last Mixer (only) to the
up position. See page Manual-11).
Figure 1. ECB 6 Base with both Stereo and Mono Ports
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Manual-3
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Figure 2. ECB 6 Audio Bridge Figure 3. Port 1 Selection and Control
The ECB 6 Base is the master controller of the ECM 8
Mixers. The Base consists of a six port audio bridge, with an
optional internal ECS 6 Stereo Expansion module. The Base
can be used by itself as a six-by-six Port line-level audio mixer
and router. Bridging bases together creates more Ports.
All functionality is controlled through RaneWare. Software
controls are printed in bold san-serif type like this. See the
RaneWare Operators Manual for complete details.
AUDIO BRIDGE
The audio bridge allows the connection of six full-duplex
audio devices—thus the term six Port audio bridge. See
Figure 2. Each Port Input has a programmable Input Attenua-
tion control. In addition, Port Inputs 2 through 6 have hard-
ware INPUT GAIN trims on the front panel. Port 1’s Input is
designated for the ECM 8 Mixers. Each Port Output consists
of a program selectable five input audio mixer, and a program-
mable Output Attenuation control, as seen in Figure 3. This
type of configuration prevents the connection of an Input to its
Output, avoiding a possible feedback condition.
PORT 1
The Port 1 Input is different from all other Ports. This Port
contains a six input line summer, connecting up to six Mixers.
All mics in the room are connected to this Port through the
ECM 8 Mixers. This Port contains a six input line mixer,
connecting up to six ECM 8 Mixers. See Figure 3.
The Output of Port 1 is also different from all other Ports.
It is designated as the Program Port, delivering audio to the
room sound system. It has both a balanced Right channel and a
summed Mono Output of Right and Left. An installed ECS 6
Stereo Expansion Module delivers the balanced Left channel.
The Mono Output connects to the Echo Canceller Reference
on all ECM 8 Mixers.
STATUS SIGNALS
A Port status signal is true (turning the PTS indicator on)
when a Port’s Input is On , and its Signal Mode is set to On.
It is also true if Signal Mode is set to Auto, and audio is
detected over the Port’s Threshold Level.
A Port status signal is false when the Port Signal Re-
lease timer has expired after audio is no longer detected at the
Port Input.
A Master Port status signal is generated when audio is
detected at a Port Input for a period of time longer than the
Master Port Delay timer setting.
If a true Port signal is longer than the Master Port Delay
timer setting and this Port is not the Master Port, it becomes
the new Master Port.
A Program status signal is true (turning the PGS indicator
on) if the audio signal on Port 1’s Output (or Port 3’s Output if
P3 Program Contribute is selected) is greater than the
Program Signal Threshold Level.
A Program status signal is false when the audio signal on
Port 1’s Output (or Port 3’s Output if P3 Program
Contribute is selected) is less than the Program Signal
Threshold Level and the Program Signal Release timer
has expired.
The Port Signal and Master Port messages can be used by
the control system for hub-type multipoint videoconferencing.
(Refer to Get OPSTAT in the ECS Device Control Language
in the RaneWare Operators Manual.)
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Manual-4
ECB 6 Base - Front Panel Description
1. INPUT SIG level indicator: Lights when the Input signal on any Port, before trim, is above -25 dBu. Use this to check signal
flow.
2. INPUT OL level indicator: Lights when the Input signal on any Port, before trim, is within 2 dB of clipping.
3. OUTPUT SIG level indicator: Lights when the Output signal on any Port is above -25 dBu. Use this to check signal flow.
4. OUTPUT OL level indicator: Lights when the Output signal on any Port is above 6 dBu.
5. INPUT GAIN trims: Ports 2 through 6, the adjustment range is Off to +6 dB.
6. SYSTEM STATUS INDICATOR—MASTER PORTS: Displays the current Master Port. It is also used by the PORT STEP
button (see #12) to display the current Port monitored by the LEVEL Meter.
7. EXP status indicator: EXPansion port data - Lights when receiving data from the ECM 8 Mixers.
8. PTS status indicator: PorT Signal - Lights when audio is detected at any Port.
9. MCS status indicator: MiC Signal - Lights when audio is detected at any Mic Input from any ECM 8 Mixer.
10. PGS status indicator: ProGram Signal - Lights when audio is detected at any Port Output.
11. LEVEL: VU meter Selectively displays all Port Inputs and Port 1 and 3 Outputs by using the PORT STEP (see #12). This is
also an error display:
-3 by itself indicates an RW 232 receive parity error.
0 by itself indicates an Expansion Network overflow.
+6 by itself indicates an RW 232 overflow. During power-up initialization, this flashes until the system is ready.
If this keeps flashing longer than 10 seconds, RAM may be damaged. The ECB 6 needs servicing.
If this illuminates steadily, the system has overflowed. To remedy, cycle the power off, then back on.
12. PORT STEP button: Pressing this for 1 second causes the MASTER PORT STATUS LED to flash the currently monitored
port for the LEVEL meter. If this button is pressed and held for 3 seconds, the monitored port can be incremented by pressing
the button in 1 second steps. The MASTER PORT STATUS LEDs will step Port 1 thru Port 6 Inputs (LED 1-6), then back for
the Port 1 Output (LED 1), then the Port 3 Output (LED 3), and then returning back to Port 1’s Input (LED 1).
13. COM indicator: flashes randomly when receiving valid data from the control system or PC. If the DEVICE ADDRESS is not
within a valid range (1-250), this LED flashes steadily at ½ second intervals.
14. POWER indicator: Lights when the Base’s operating system is running.
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Manual-5
ECB 6 Base - Rear Panel Description
1. PORT 1 MIXER INPUTS: MIX 1 thru MIX 6 connect to the MIX OUTs of the ECM 8 Mixers via the 12 pin Euroblock.
2. PORT INPUTS: P2 thru P6 connect to balanced line sources via this 15 pin Euroblock. When the ECS 6 Stereo Option card
is installed, these are the Right channel Inputs. See page Manual-7.
3. ECS 6 PORT INPUTS: Connects the Left channel Inputs. See page Manual-7.
4. PORT OUTPUTS: This 8 pin Euroblock provides P1, P1 MONO and P2 Outputs, and the 12 Pin Euroblock provides P3 thru
P6. (P1 MONO is used for the ECM 8 Echo Canceller Reference.) When the ECS 6 Stereo Option card is installed, these are
the Right channel Outputs.
5. ECS 6 PORT OUTPUTS: Connect the Left channel P1 and P2 Outputs from the 8 pin Euroblock, while P3 thru P6 are
delivered from the 12 pin Euroblock. (P1 Mono Not Applicable—available at #4.)
6. ECS EXPANSION port: This RJ11 mod jack and cable (included) is an Expansion data interface to control and communi-
cate with the ECM 8 Mixers. This proprietary high speed data interface cannot be used with non-ECS products. During
power-up of the Base, all connected Mixers are polled, then sent their respective data, from the Base’s non-volatile memory.
The Base then polls the Mixers at one minute intervals checking for dropped or added mixers. If found, the Base resets.
7. RW 232 CONTROL - DEVICE ADDRESS: Sets the RW 232 address for the ECB 6. Each RW 232 unit requires a different
address. If the RW 232 Control Device Address is set to an invalid address, the COM LED continually flashes. The Device
Address can be changed without power cycling the unit. See page Manual-16.
8. RW 232 CONTROL - INPUT: This DB9 female connects to the RS-232 output of the controller (or PC), or the OUTPUT of
another RW 232 unit connected to the controller. Rane uses a standard RS-232 interface using Rane’s RW 232 protocol
operating at 19.2 kb. Units connect by daisy-chaining the products on a serial bus, OUTPUT to INPUT.
9. RW 232 CONTROL - OUTPUT: This DB9 male connects to downstream RW 232 units.
10. POWER input jack: This 5 pin DIN connects to the included RS 3 power supply, or daisychained with the Power Loop
cable from the ECM 8 connected to the RS 3 power supply. Warning! Connect the power supply DIN connector to the Base
BEFORE connecting to AC power, otherwise damage may occur. See page Manual-14.
ECB 6 Installation Notes
If an ECS 6 Stereo card is to be installed in the ECB 6, install the required mono jumper on the ECB 6 mother board
before installing the ECS 6. (See page Manual-7)
The ECS Expansion port is the control between the ECB 6 and the ECM 8s. Using the supplied RJ11 cable connect the
ECM 8s to the ECB 6. Note: The ECM 8s do not use RW 232 addressing. The ECS address for the ECM 8s determines the
Mic number on the ECM 8. ECS address 1 is Mixer 1, Mics 1 thru 8. ECS address 6 is Mixer 6, Mics 41 thru 48. Always
leave the termination setting on the ECS address switch to its off position. Only use termination on the last Mixer when using
four or Mixers or more.
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Manual-6
Figure 4. ECB 6 Base internal block diagram
ECB 6 Base Block Diagram
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Manual-7
DESCRIPTION
The ECS 6 is a plug-in module for the ECB 6 Base. Once
installed, the Base can accommodate both stereo and mono
audio. Included on the module is a duplicate of the Base’s
Audio Bridge, with the exception that Port 1 has no external
input connection, and the Mono Program Output is eliminated.
The stereo module mounts on top of the ECB 6 motherboard
and is designated as the Left channel.
The ECS 6 installs by temporarily removing the top cover
of the ECB 6 and seating the card onto factory installed
standoffs on the motherboard. See Figure 8 below.
Warning: Proper static discharge measures must be
followed when installing or configuring this card.
Figure 7. ECS 6 Stereo Expansion Card installation with Mono Jumper locations
ECS 6 LEFT CHANNEL FEATURES
• Six Port Selective Audio Bridge, control is combined with
the ECB 6 Right channel Audio Bridge.
• Hardware Level Trim Controls set overall Input Levels on
Ports 2-6.
• Software Programmable Level controls on all Inputs and
Outputs combined with the Base’s Right channel Levels.
• Port 1’s mono inputs deliver signal to both Right and Left
channels of Port 1.
STEREO & MONO OPERATION
Both mono and stereo equipment are accommodated by
installing the ECS 6 into the ECB 6 and placing the internal
Mono Output jumpers to their “mono” positions for mono
equipment. Mono Input signals must be wired to both the Left
and Right Inputs of the Base. Both Left and Right Port Outputs
produce the same mono signal. See page Manual-16 for mono
source cable wiring.
Since Port 1 is designated as the Program Output, it does
not have a Mono jumper. Both mono and stereo Outputs are
provided simultaneously from Port 1.
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Manual-8
ECS 6 Stereo Expansion Module Block Diagram
Figure 8. ECS 6 Block Diagram
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Manual-9
PHANTOM POWER
The ECM 8 Mixers are shipped with internal Phantom
Power switches in the “on” position. To change, remove the
top cover and look for the switches in the middle left of the
circuit board, as shown on page Manual-13.
REDUCING NOISE AND ACOUSTIC GAIN
Three methods are available to reduce noise and acoustic
gain due to the mixing of multiple microphones and multiple
echo cancellers.
The first method is a special NOMM Mode (Number of
Mics & Mixers open). This function maintains full level at the
Master Mic Input that has detected audio, while reducing
Gains of the other Inputs in order to maintain unity gain.
The second method is a Mixer Gate. This function reduces
the Output Level of the Mixers that are not detecting audio and
do not have a current Master Mic. When using the ECM 8
Expansion Input, deselect the Mixer Gate.
The third method, Mixer Suppression, utilizes a one shot
suppression technique. This is only active when a new Input
has Gated-On and audio is no longer detected at the previous
Input. The added Suppression is 12 dB. Activating Mixer
Suppression allows the Echo Canceller to readapt to the new
Mic without returning echo.
An example of Mixer Suppression:
1. Someone talks at local Mic 1. (New Input = false)
2. The person at local Mic 1 stops talking and someone at the
remote location talks. (No Mixer Suppression is added.)
3. Someone at local Mic 2 starts to talk. (New Input = true)
4. The person at local Mic 2 stops talking and someone at the
remote location talks. (Mixer Suppression is added.)
5. Someone at local Mic 2 starts to talk again. (New Input =
false) (No Mixer Suppression is added.)
DEVICE ADDRESS
The Mixer’s rear panel ECS INTERFACE DEVICE
ADDRESS determines its Mixer number and Mic Input
numbers. For example, Device Address 1 is Mixer 1 including
Mics 1-8, and Device Address 2 is Mixer 2 including Mics 9-
16. Only Device Addresses 1 through 6 are allowed, since this
is the maximum Mixers per Base. When a Mixer is first
powered up and has not received data from the Base, the Mic
Status LEDs display the Mixer Device Address.
An invalid Device Address set on the Mixer causes its
COM LED to continually flash. The ECM 8’s power must be
cycled after changing the Device Address. Unplug from the
wall, not the unit!
TERMINATION
If four or more Mixers are used with a Base, set the
termination switch up on the last Mixer (only).
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The ECM 8 Mixer is a digitally-controlled-analog eight
channel Mic/Line auto-mixer. An optional internal DSP Echo
Canceller module is available either separately (model ECA 1)
or included (model ECM 8A). Each Base supports up to 6
Mixers, allowing 48 Inputs. All system parameters of the Base
and Mixers are stored within the Base using non-volatile
memory (no batteries). The ECM 8 Mixer is not a stand-alone
device and will not operate without a Base connected.
All functionality is controlled through RaneWare. Software
controls are printed in san-serif type like this. See the
RaneWare Operators Manual for complete details.
LAST-ON or GATED MODES
Unlike other auto mixers, the ECM 8 allows each Mic
Input to be either Last On or Gated. A Mic assigned as
Gated simply turns the Input on when the input signal is
above the Threshold Level, and turns the Input off when the
signal drops below and the Release Timer has expired. A Mic
assigned as Last On remains on once it becomes the Master.
A Master Mic is a status signal generated when audio is
detected at a Mic Input for a period of time longer than the
Master Mic Delay timer setting. If an Input is assigned as
Last On, and audio is detected for a period longer than the
Master Mic Delay timer, that Input becomes the Master and
remains on until a new Input takes over. The old Master Mic
then releases and returns to its set Gate Depth.
MIC THRESHOLD
Each Mic channel can operate in either an Automatic or
Manual Threshold mode. In Automatic Threshold mode,
Mic 1 of each Mixer is used to calculate the background room
noise level. This calculated level replaces the set Threshold
Level for this Mic channel.
MZEC™ (em-zeck)
Using large auto mixers with an echo canceller can cause
echo problems when several microphones gate-on at the same
time. If a single echo canceller is adapting to all Mic signals,
and more than three Mics are on at the same time, the acoustic
model for the room may become too complex. This causes
Echo Canceller divergence, resulting in more suppression or
return echo. To eliminate this problem, each ECM 8 Mixer
allows the addition of an internal Echo Canceller. Placing an
Echo Canceller in each mixer reduces the number of acoustical
echo paths for a multi-microphone system, improving the
system audio quality. (See the ECA 1 Echo Canceller module
on page Manual-13.) This method is called MultiZone Echo
Cancelling (MZEC™).
For multiple Echo Cancellers to properly adapt to the
room, each Mixer must have at least one Mic set to Last On
and the Mixer Gate must be checked. This allows each Mixer
to keep a Mic open for the Echo Canceller to adapt. Port 1’s
MONO Output from the Base must be connected to all of the
E/C REF Inputs of the Mixers.
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Manual-10
ECM 8 Mixer - Front Panel Description
1. INPUT SIG indicator: Lights when any Input signal, before trim, is above -25 dBu. Use to check signal flow.
2. INPUT OL indicator: Lights when the Input signal on any Input, before trim, is within 2 dBu of clipping. Watch this when
Selecting the Input GAIN and setting the LEVEL.
3. OUTPUT SIG indicator: Lights when the Mix Output signal is above -25 dBu. Use to check signal flow.
4. OUTPUT OL indicator: Lights when the Mix Output signal level is 2 dBu before clipping.
5. MIC GAIN switch: Selects between +6 dB (line level), +40 dB (most mics), or +56 dB.
6. MIC LEVEL trim: Use a small flat screwdriver to adjust the Level from off to full on.
7. MIC STATUS indicators: Displays the status of the Mic gate: A flashing LED indicates the Mic is Gated On, or the Mic is
the Master Mic for this Mixer. A continuous LED indicates the Mic is the system’s Master Mic. When power is first applied,
the ECM 8 displays its DEVICE ADDRESS until it receives data from the ECB 6. Once data is received, the ECM 8 lights
LEDs 1, 2, and 6 for about 1 second.
8. EXP indicator: Lights when receiving Expansion Data.
9. POWER indicator: Lights when the processor is correctly powered.
ECM 8 Installation Notes
If Phantom Power is not required remove the top cover to the ECM 8 and disable it. See page Manual-9.
Always leave the RS 3 power supplies for last. Once all the wiring is completed, connect the loop thru power cables
between the ECM 8s ending at the ECB 6. Before connecting the RS 3 make certain that it is not connected to the AC power.
Always use the power connector restraint when connecting the RS 3 to the unit. See page Manual-14.
The ECS Expansion port is the control between the ECB 6 and the ECM 8s. Using the supplied RJ11 cable connect the
ECM 8s to the ECB 6. Note: The ECM 8s do not use RW 232 addressing. The ECS address for the ECM 8s determines the
Mic number on the ECM 8. ECS address 1 is Mixer 1, Mics 1 thru 8. ECS address 6 is Mixer 6, Mics 41 thru 48. Always
leave the termination setting on the ECS address switch to its off position. Only use termination on the last Mixer when using
four or Mixers or more.
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Manual-11
ECM 8 Mixer - Rear Panel Description
An invalid Device Address set on the Mixer causes
its COM LED to continually flash. The ECM 8’s
power must be cycled after changing the Device
Address. Unplug from the wall, not the unit!
1. MIC INPUTS: These balanced Inputs connect MIC 1-MIC 4 on one 12 pin Euroblock, and MIC 5-MIC 8 on another 12 pin
Euroblock. See page Manual-14 for cable wiring.
2. POST-GATE OUTPUTS: One 8 pin Euroblock delivers MIC 1-MIC 4; the other 8 pin Euroblock delivers MIC 5-MIC 8.
3. EXP IN: This Expansion Input allows a single echo canceller to be installed with multiple mixers by connecting the MIX
OUT of the last Mixer to the Expansion Input of the next mixer. There is no level adjustment. When using this Input, the
Mixer Gate must be turned off on the Mixer’s page (see the RaneWare Operators Manual).
4. MIX OUT: This Post-Gate Output is program Selectable as either a Pre-Echo-Canceller or Post-Echo-Canceller, and is
typically connected to one of the MIX INPUTs on the ECB 6 Base. For Pre-Echo Cancellation, Select Bypass in the Echo
Canceller box on the Mixer’s page in RaneWare.
5. AUX OUT: This Output is switch selectable as either a Post-Gate or Pre-Gate before the Echo Canceller. This switch is set to
“Post-Gate” at the factory. If required, remove the top cover and look for the switch marked “S1” in the middle toward the
back of the circuit board. Set the switch according to the silkscreen and replace the cover and screws.
6. E/C REF: Echo Canceller Reference—This Input typically connects to the Port 1 MONO Output of the ECB 6 Base when an
ECA 1 Echo Canceller is used within this Mixer. The average signal level at this input must be between -10 and 0 dBu.
7. ECS INTERFACE—EXP OUT: This RJ11 mod jack (and supplied cable) sends Expansion data, connecting to the EXP IN
jacks on subsequent ECM 8 Mixers.
8. ECS INTERFACE—EXP IN: This RJ11 mod jack (and supplied cable) receives Expansion data, connecting to the ECS
EXPANSION jack on the ECB 6 Base or the EXP OUT jacks on upstream ECM 8 Mixers eventually connecting to the Base.
9. ECS INTERFACE—DEVICE ADDRESS/TERMINATOR: Selects the Mixer number 1 thru 6 and termination. The
Device Address is set using a binary code determined using the following table. For example, turning ON the switches labeled
‘1’ and ‘2’ on the chassis yields address ‘3’. In the following table, 0 means switch down (OFF), 1 means switch up (ON), and
the left-most digit corresponds to the switch labeled ‘TERM’ which should only be used on the last ECM 8 in the chain.
SWITCH #s 234
1 001
2 010
DEVICE 3 011
ADDRESS 4 100
5 101
6 110
SILKSCREEN #s 421
10. MIC STATUS: This DB-9 female jack is an open collector Output reflecting the current gated Mic Input. Pin 1 is Mic 1, pin
2 is Mic 2, pin 3 is Mic 3, etc., and pin 9 is ground. This connector can be used as status information for video-follows-audio.
11. POWER LOOP: A DIN cable (included) connects up to 3 ECM 8 Mixers and 1 ECB 6 Base, powered from one RS 3
Power Supply. Connect only a Rane RS 3 power supply to either of these DIN jacks or an attached unit with an RS 3. Do not
connect two RS 3 units to the same unit or loop. Warning! Connect the DIN power supply connectors to the units before
connecting to AC power, otherwise damage may occur. See POWER on page Manual-14.
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Manual-12
ECM 8 Mixer Block Diagram
Figure 9. ECM 8 Mixer Block Diagram
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Manual-13
Warning: Proper static discharge measures must be
followed when installing or configuring this card.
Figure 11. ECA 1 Installation with ECM 8 Phantom Power and network termination jumper locations
Figure 10. ECA 1 Block Diagram (detail from page Manual-11).
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DESCRIPTION
The ECA 1 is a continually adaptive Acoustic Echo
Canceller module for the ECM 8 Mixer using DSP technol-
ogy. Each ECM 8 Mixer allows the addition of an internal
Acoustic Echo Canceller. Placing the Echo Canceller in each
Mixer reduces the number of acoustical echo paths for a multi-
microphone system, thereby improving the audio quality of
the system. This method of echo cancelling is called MZEC™
MultiZone Echo Cancelling. See page Manual-9.
Since the Echo Canceller automatically adapts to the room,
training is not required.
The ECA 1 installs by temporarily removing the top cover
of the ECM 8 and seating the module onto factory installed
standoffs on the motherboard.
After installing the Echo Canceller, disable Echo Cancel-
ler Bypass in RaneWare (see the RaneWare Operators
Manual).
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Manual-14
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OWEWE
WEWE
WER, AR, A
R, AR, A
R, AUU
UU
UDD
DD
DII
II
IO, & DO, & D
O, & DO, & D
O, & DAA
AA
A
TT
TT
T
A CA C
A CA C
A COO
OO
ONN
NN
NNN
NN
NEE
EE
ECTICTI
CTICTI
CTIOO
OO
ONN
NN
NSS
SS
S
POWER
The Rane RS 3 Power Supply is provided with each
ECB 6 Base, and required for operation of the ECM 8 Mixer.
Daisychaining is possible with the DIN cables (included with
the ECM 8). One RS 3 will power any one of the following:
• (1) Base and (2) Mixers
• (3) Mixers
When connecting the ECS units to other components in
your system for the first time, leave the power supplies for
last, and then connect the DIN power cable to the unit
BEFORE connecting AC power. This gives you a chance to
correct any mistakes before any damage is done to your units,
speakers, computer, ears, etc.
Once all power is connected, attach the power cable
restraint brackets to the chassis ground screws, one bracket
included with each unit. This insures the power cables will not
become loose.
Figure 12. RS 3 daisychained power connections
AUDIO
ECS units have both balanced and unbalanced Inputs and
Outputs, with chassis-grounded shields. Chassis ground is to
be connected to a known earth ground. Refer to Figure 13 on
the following page.
DATA
To control the units from a computer, use nine-pin RS-232
cables 50 feet or shorter. The cable must not be a null-modem
type. A short cable is supplied for connecting adjacent units.
Daisychain up to 250 units by connecting the COM port on the
computer to the INPUT connector on the first unit, and the
OUTPUT connector of each unit to the next unit’s INPUT.
Since RS-232 can pass through RW 232, additional RS-232
devices may be attached at the end of the RW 232 chain. See
the pin-outs in Figure 13 on the following page.
DETAILS
Large racks of equipment such as ECS may generate
excess heat, requiring extra space beween units, and/or forced
air ventilation to reduce the ambient temperature in the rack.
Before powering the units, set the DEVICE ADDRESS
switches as shown on page Manual-16.
OK, now for the AC line cord.
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Manual-15
AMX AX 232 to ECB 6 - Euroblock to DB-9 malePC to ECB 6 - DB-25 female to DB-9 malePC to ECB 6 - DB-9 female to DB-9 male
Unbalanced source to balanced ECB 6 Input, 1-conductor cable with shield
Figure 13. ECS cable wiring
Balanced mono source to a stereo ECB 6 with transformer type termination
Balanced mono source to a stereo ECB 6
Unbalanced source to balanced ECB 6 Input, 2-conductor cable with shield
Balanced ECB 6 Output to an unbalanced unit
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Manual-16
SS
SS
SEE
EE
ETT
TT
TTITI
TITI
TINN
NN
NG THG TH
G THG TH
G THE DE D
E DE D
E DEE
EE
EVIVI
VIVI
VICC
CC
CE ADE AD
E ADE AD
E ADDD
DD
DRR
RR
REE
EE
ESS
SS
SSS
SS
S
The Device Address is set using a binary code which may be determined using
the following table, our Windows Address Calculator program, or by adding the
place values (1-128) silkscreened on the chassis. Ignore all numbers printed
directly on the switch. For example, turning ON the switches labeled ‘1’ and ‘2’
yields address ‘3’. In the following table, 0 means switch down (OFF), 1 means
switch up (ON), and the left-most digit corresponds to the switch labeled ‘128’.
Rane also provides a special calculator to assist in setting the dip switches.
After installing the software, in the RaneWare program group, launch the
RaneWare 232 Address Calculator. This binary calculator converts decimal
numbers into corresponding dipswitch settings.
1 00000001
2 00000010
3 00000011
4 00000100
5 00000101
6 00000110
7 00000111
8 00001000
9 00001001
10 00001010
11 00001011
12 00001100
13 00001101
14 00001110
15 00001111
16 00010000
17 00010001
18 00010010
19 00010011
20 00010100
21 00010101
22 00010110
23 00010111
24 00011000
25 00011001
26 00011010
27 00011011
28 00011100
29 00011101
30 00011110
31 00011111
32 00100000
33 00100001
34 00100010
35 00100011
36 00100100
37 00100101
38 00100110
39 00100111
40 00101000
41 00101001
42 00101010
43 00101011
44 00101100
45 00101101
46 00101110
47 00101111
48 00110000
49 00110001
50 00110010
51 00110011
52 00110100
53 00110101
54 00110110
55 00110111
56 00111000
57 00111001
58 00111010
59 00111011
60 00111100
61 00111101
62 00111110
63 00111111
64 01000000
65 01000001
66 01000010
67 01000011
68 01000100
69 01000101
70 01000110
71 01000111
72 01001000
73 01001001
74 01001010
75 01001011
76 01001100
77 01001101
78 01001110
79 01001111
80 01010000
81 01010001
82 01010010
83 01010011
84 01010100
85 01010101
86 01010110
87 01010111
88 01011000
89 01011001
90 01011010
91 01011011
92 01011100
93 01011101
94 01011110
95 01011111
96 01100000
97 01100001
98 01100010
99 01100011
100 01100100
101 01100101
102 01100110
103 01100111
104 01101000
105 01101001
106 01101010
107 01101011
108 01101100
109 01101101
110 01101110
111 01101111
112 01110000
113 01110001
114 01110010
115 01110011
116 01110100
117 01110101
118 01110110
119 01110111
120 01111000
121 01111001
122 01111010
123 01111011
124 01111100
125 01111101
126 01111110
127 01111111
128 10000000
129 10000001
130 10000010
131 10000011
132 10000100
133 10000101
134 10000110
135 10000111
136 10001000
137 10001001
138 10001010
139 10001011
140 10001100
141 10001101
142 10001110
143 10001111
144 10010000
145 10010001
146 10010010
147 10010011
148 10010100
149 10010101
150 10010110
151 10010111
152 10011000
153 10011001
154 10011010
155 10011011
156 10011100
157 10011101
158 10011110
159 10011111
160 10100000
161 10100001
162 10100010
163 10100011
164 10100100
165 10100101
166 10100110
167 10100111
168 10101000
169 10101001
170 10101010
171 10101011
172 10101100
173 10101101
174 10101110
175 10101111
176 10110000
177 10110001
178 10110010
179 10110011
180 10110100
181 10110101
182 10110110
183 10110111
184 10111000
185 10111001
186 10111010
187 10111011
188 10111100
189 10111101
190 10111110
191 10111111
192 11000000
193 11000001
194 11000010
195 11000011
196 11000100
197 11000101
198 11000110
199 11000111
200 11001000
201 11001001
202 11001010
203 11001011
204 11001100
205 11001101
206 11001110
207 11001111
208 11010000
209 11010001
210 11010010
211 11010011
212 11010100
213 11010101
214 11010110
215 11010111
216 11011000
217 11011001
218 11011010
219 11011011
220 11011100
221 11011101
222 11011110
223 11011111
224 11100000
225 11100001
226 11100010
227 11100011
228 11100100
229 11100101
230 11100110
231 11100111
232 11101000
233 11101001
234 11101010
235 11101011
236 11101100
237 11101101
238 11101110
239 11101111
240 11110000
241 11110001
242 11110010
243 11110011
244 11110100
245 11110101
246 11110110
247 11110111
248 11111000
249 11111001
250 11111010
Figure 14. Device Address Calculator
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Manual-17
APAP
APAP
APPP
PP
PEE
EE
ENN
NN
NDD
DD
DIXIX
IXIX
IX
ECB 6 Specifications
Parameter Specification Limit Units Conditions/Comments
Frequency Response 20 Hz to 20 kHz ±1 dB
Port 1 Input Impedance 10k ohms Unbalanced
Port 1 Nominal Input Level -14 dBu
Ports 2-6 Input Impedance 10k ohms Active balanced
Trim Input Gain Off to +6 dB
Input Attenuation 0-100 dB Programmable
Maximum Input Level +14 dBu
Minimum Input Level -14 dBu
Port 1 Mono Output Type Unbalanced 300 ohms
Port 1 Mono Output Level 0dBu
All Ports - Output Type Active Balanced Cross-coupled
Total Harmonic Distortion 0.01 max %+4dBu, 20-20 kHz
CMRR >40 dB @ 1 kHz
Signal-To-Noise >90 dB @ 0 dBu ref
Crosstalk >70 3dB @ 1 kHz
Output Attenuation 0-100 dB Programmable
Automatic Level Control Attack Time=1 sec
Release Time=1 sec
Limiter Attack Time=10 ms
Release Time=100 ms
Overload Indicator Thresholds 20.5 2dBu Input and Output Levels
Signal Present Thresholds -27 5dBu Input Level
Unit: Agency Listing
..........120 VAC Model Class 2 Equipment National Electrical Code
U.L. 813 Class 2 Pending
C.S.A. Exempt Class 2 Pending
Certified FCC part 15J Class B Device
..........230 VAC Model VDE, SELV Safety Extra Low Voltage
CE (EMC) EMC Directive 89/336/EEC
CE (Safety) Exempt Article 1 of LV Directive 73/23/EEC
Power Supply: Agency Listing
U.L. Listed File no. E137895
C.S.A. Certified File no. LR74350 Level 3
CE
Power Supply: Input 100-240 VAC IEC line cord jack
..........Output +5 VDC, 3.0 A Pin 3
-12 VDC, 0.8 A Pin 4
+12 VDC, 0.8 A Pin 5
Return Pins 1 & 2
Unit: Construction All Steel
..........Size 1.75" H x 19" W x 8.5" D (1U) (4.4 cm x 48.3 cm x 21.6 cm)
..........Weight 6 lb (w/o power supply) (2.7 kg)
Shipping: Size 4.5" x 20.3" x 13.75" (11.5 cm x 52 cm x 35 cm)
..........Weight 11 lb (5.0 kg)
All Ports - Output Level @ 0 dB on Meter = 0 dBu (Max Output Level)
Note: 0 dBu=0.775 Vrms *Level Controls Set at “0”
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Manual-18
ECM 8 Specifications
Parameter Specification Limit Units Conditions/Comments
Frequency Response ±1 dB 20 Hz to 20 kHz
Input Impedance 1k ohms Active Balanced
THD < 0.1 %
Signal-To-Noise >90 dB @ 0 dBu ref
Maximum Gain 72 dB
CMRR >60 dB @ 1 kHz
Min and Max Input Levels 6 dB (-22 to +12) dBu
40 dB (-56 to -22) dBu
56 dB (-72 to -42) dBu
Gate Attenuation 0 to -100 dB
Attack time <10 ms
Master and Release Timer .05 to 3 sec
Phantom Power 12 V @ 10 ma Selectable per Input
E/C REF Input Unbalanced 47.5k ohms -10 to 0 dBu
Post-Gate, Aux, Mix Outputs Unbalanced 300 ohms -14 dBu Nominal @ 1 kHz
Automatic Adaptation Rate <5 sec During Quiet Operation
Unit: Agency Listing
..........120 VAC Model Class 2 Equipment National Electrical Code
U.L. 813 Class 2 Pending
C.S.A. Class 2 Pending
Certified FCC part 15J Class B Device
..........230 VAC Model VDE, SELV Safety Extra Low Voltage
CE (EMC) EMC Directive 89/336/EEC
CE (Safety) Exempt Article 1 of LV Directive 73/23/EEC
Power Supply: Agency Listing
U.L. Listed File no. E137895
C.S.A. Certified File no. LR74350 Level 3
CE
Power Supply: Input 100-240 VAC IEC Line Cord Jack
..........Output +5 VDC, 3.0 A Pin 3
-12 VDC, 0.8 A Pin 4
+12 VDC, 0.8 A Pin 5
Return Pins 1 & 2
Unit: Construction All Steel
..........Size 1.75" H x 19" W x 8.5" D (1U) (4.4 cm x 48.3 cm x 21.6 cm)
..........Weight 6 lb (w/o power supply) (2.7 kg)
Shipping: Size 4.5" x 20.3" x 13.75" (11.5 cm x 52 cm x 35 cm)
..........Weight 11 lb (5.0 kg)
All Ports - Output Level @ 0 dB on Meter = 0 dBu (Max output level)
Note: 0 dBu=0.775 Vrms
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Manual-19
ECA 1 Specifications
ECS 6 Specifications
Parameter Specification Limit Units Conditions/Comments
Frequency Response 20 Hz to 20 kHz ±1 dB
Ports 2-6 Input Impedance 10k ohms Active balanced
Trim Input Gain Off to +6 dB
Input Attenuation 0-100 dB Programmable
Maximum Input Level +14 dBu
Minimum Input Level -14 dBu
All Ports - Output Type Active Balanced Cross-coupled
THD 0.01 max %
CMRR >40 dB @ 1 kHz
Signal-To-Noise >90 dB @ 0 dBu ref
Crosstalk >70 dB @ 1 kHz
Output Attenuation 0-100 dB Programmable
Shipping: Size 4.5" x 12" x 14" (11.5 cm x 30.5 cm x 35.5 cm)
..........Weight 4 lb (1.8 kg)
All Ports - Output Level @ 0 dB on Meter = 0 dBu (Max output level)
Parameter Specification Limit Units Conditions/Comments
DSP Adaptive Acoustic Echo Canceller
Frequency Response
..........3.5 kHz operation 125 to 3625 Hz
..........7 kHz operation 125 to 7125 Hz
Audio Processing Delay <50 ms Local to Remote Output
Tail Length Up to 250 ms
Total Echo Cancellation Up to 60 dB Receive State only
Adaptive Echo Cancellation 45 dB
Shipping: Size 4.5" x 12" x 14" 11.5 cm x 30.5 cm x 35.5 cm
..........Weight 4 lb 1.8 kg
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Manual-20
All features & specifications subject to change without notice. JAN98
©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5098 TEL [phone] FAX [phone] WEB http://www.rane.com
FCC NOTICE
This equipment has been tested and found to comply
with the limits for a Class B digital device, pursuant to Part
15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency
energy, and if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio
communications. Operation of the equipment in a residential
area is likely to cause harmful interference in which case the
user will be required to correct the interference at their own
expense. Changes or modifications not expressly approved by
Rane Corporation could void the user's authority to operate the
equipment.
CANADIAN EMC NOTICE
This Class B digital apparatus meets all requirements of the
Canadian Interference-Causing Equipment Regulations.
Cet Appariel numerique de la classe B respecte toutes les
exigences du Reglement sur le material broilleur du Canada.
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