Rane ECS RaneWare User Manual download pdf (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?

yes

Select Memory 1 to return

back to room controller

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 31 32

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Rane ECS RaneWare User Manual Page 21

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