Product specifications

1010

System Mute Function Switch

In certain circumstances it is preferable to use the muting capabilities in a DSP based automated

microphone mixer instead of the Charger Base system mute. This is the case when the mixer is

providing acoustic echo cancellation and needs a continuous signal to maintain a near-end audio

reference. The two position System Mute switch located on the back panel controls how the Base

Station handles the audio output for muted channels.

Position 1 (left side - default): Base Station completely shuts off audio out of each channel that is

in the mute state.

Position 2 (right side): Base Station leaves audio output of muted channel at the same level and

signals the appropriate “mute out” pin on DB25 connector for line muting on external hardware

(see DB25 below).

Warning: The Executive system will not mute when the switch is in Position 2 (right side).

Neither the microphone MUTE button, nor the System Mute button on the Charger Base will mute

audio. Muting is only controlled by the third party mixer.

DB25 Control Port

In connection with the System Mute switch, the DB25 Control Port allows the use of third party

control systems using parallel port IO (active low, open collector). The pin-out status functions

shown below can be used to provide system muting operations via third party products. The

System Mute switch should be pushed all the way to the right for this feature to operate. The

MUTE OUT indicators are used to determine muted channels and the SYS MUTE IN mutes all

channels by using a programmable muting macro in the control device.

DB25 Connector Pin Function

Pin 1 Mute – Channel 1 output

Pin 2 System Mute – Input

Pin 3 Mute – Channel 2 output

Pin 5 Mute – Channel 3 output

Pin 7 Mute – Channel 4 output

Pin 9 Mute – Channel 5 output

Pin 11 Mute – Channel 6 output

Pin 13 Mute – Channel 7 output

Pin 15 Mute – Channel 8 output

Pin 25 Ground

Pin All Others NA

Please see the operating manual for the third party control device for more information on setup

and programming.