Web Conferencing - Shure Digital IntelliMix SCM820 Manual

Chairperson-Controlled Muting
The chairperson can, by activating a switch, silence all other microphones and be heard without interruption.
1. Set the desired channel to Chairperson Mute to manual in the SCM820 application (IntelliMix Panel > Chairper­
son > Mute).
2. Connect the switch to the Override In logic connection for the chairperson's microphone.
An alternative to a switch is to set the Chairperson Mute to Auto. In this setting, when the chairperson's microphone activates,
all other microphones mute automatically.
Remote Channel-Open Indicators
Remote indicators can be used to indicate when a talker's microphone is on. Connect the LEDs and a 5-volt supply to the
GATE OUT pin. To avoid switching clicks in the audio output, do not ground the power supply negative terminal in the audio
system or rack ground.
Important: If a single cable is used for the microphone audio signal and the LED dc power, separate shielded pairs must be
used. Failure to carry the DC power on a shielded pair may result in audible clicking due to capacitive coupling between the DC
power lines and microphone lines.
Disabling the Gating Function (Always On)
Select Always On for the channel(s) that should remain open (SCM820 application > IntelliMix Panel > Always On).
Loudspeaker Muting
Some applications require a loudspeaker to be placed near each talker to provide audio reinforcement, or to permit telephone
conversation or conference monitoring. Each loudspeaker can cause feedback unless it is automatically switched off when the
talker near it speaks. To provide this function, connect the GATE OUT terminal of each channel to a separate loudspeaker mut-
ing relay.
NOTE: A diode across each relay coil is required to suppress inductive voltage spikes which may damage the SCM820.
An alternative to creating a circuit is a Logic Controlled Relay, such as the Radio Design Labs (RDL) ST‑LCR1.

Web conferencing

Dante-enabled mixers integrate software applications such as MS Teams , Skype , Zoom , and WebEx . This enables mul-
tiple microphones to participate in a teleconferencing event.
1. Reference the Installation section to properly connect and setup microphones to the mixer back panel.
2. Open the IntelliMix tab of the SCM820 application.
3. Select Dual Mixer operation.
4. In the SCM820 application, route channels 1 - 8 to Mix A only (deselect routing to Mix B).
5. In the Inputs tab of the SCM820 application, route the Aux to Mix B only.
6. Open Dante Virtual Soundcard and turn it on.
7. Open Dante Controller (DC) software.
8. In DC, route the SCM820 tx channel 'Mix A' to computer rx channel 1.
9. In DC, route computer tx channels 1 and 2 to SCM820 rx channels Aux L and R.
10. Connect Mix B analog output to a speaker or output device.
11. Open the computer's settings and select Dante as the input and output soundcard.
Trademarks: Trademarks are the property of their respective owners.
tm tm tm
Shure Incorporated
tm
37/59