Rane ECS RaneWare - Manual (Page 21)

RW Manual-21
QUICK OVERVIEW
a. Set up the ECM 82e Mic levels.
b. Set up the Input levels to the ECB 62e.
c. Set the Mic operation for each Input on the ECM 82e.
d. Set the
Program Signal Threshold and Offset on the ECB
62e, utilized to keep Mics from Gating On with audio at the
loudspeakers. Typical settings with Port 1’s Output set to
0
dB - Program Signal Threshold 20 dB, Program Signal
Offset 20 dB.
e. Set the Near Signal Offset, utilized to keep other Mics
from Gating On when the Mic signal is Active. Typical
setting 20 dB.
f. Enabling Port 1 Suppression removes residual echo.
Typical level is 6 to 12 dB. The higher the level the more
the system sounds like half duplex.
g. The Port 1 Noise Gate is normally not needed, but may be
during multipoint operation. Typical level is 6 to 12 dB.
h. On the Mixer tab, the Echo Canceller has two operation
selections – Bypass and Suppression. Bypass is used
during Mic setup and when an Echo Canceller is not
installed.
Suppression selects the amount of attenuation to
be applied to the residual echo after echo cancellation.
Moderate is appropriate for most rooms. Soft offers less
suppression and
Strong offers more. Since suppression
affects the subjective quality of a room, experimentation is
the best method to determine which setting is best for a
given room.
i. Enabling Mixer Suppression adds suppression to the Mixer
Output when there is a new gated Mic. Suppression is only
performed once to remove residual echo caused by the re-
adaptation of the Echo Canceller. This setting is typically
on.
j. Mixer Gate is only used when there are 2 or more ECM
82eAs. Do not use this function when connecting another
mixer to the ECM 82e’s Expansion Input. Typical settings
are checked and
12 dB.
Use the following procedures to adjust the Mic and Port
Inputs. Before proceeding, know the audio input and output
levels required for the interfacing equipment. Also know the
input and output type: balanced using transformer, active, or
unbalanced. See RaneNote 110, “Sound System Interconnec-
tion” for cabling recommendations.
MIC SETUP (see flow chart)
The ECM 82e is shipped with its INPUT GAINS set to -
10 dBu. When Gain is set to 40 dB, the Mic Inputs are
calibrated to an Audio Technica AT 961R. (See Phantom
Power in the ECS Hardware Manual if required.)
To set Mic levels a Sound Level Meter is required, such as
a Radio Shack 33-2050.
1. Remove the security cover.
2. Start with Mic 1 and only work with one Mic at a time.
3. Select the proper Input GAIN setting for the Mic (typically
40 dB)
4. Set all Mic Input LEVELS to 0 (fully CCW).
5. If front speakers are used, point the Mic towards them.
6. Place the Sound Level Meter next to the Mic and set it as
follows: Range to 80 dB, A-Weighting, Slow Response.
Mic Setup Flow Chart
ECS ALIGNMENT PROCEDURE
Mic Setup
Load Application
(see pages 10-15)
Set all Mic Input Gain
switches. Set all
Mic Input Pots CCW (off)
Start with Mic 1
Select Memory 16
Select this Mic as Active
Place a sound level meter
next to the Mic and aim
both toward loudspeaker
Turn on Noise Source,
adjust system level for
80 dBA at SPL meter
Raise Mic Level until 0 dB
is displayed on the Base
VU meter for Port 1's Input
Next Mic
Are all Mics
Set?
no
yes
Select Memory 1 to return
back to room controller