JK Audio Interloop - Manual (Page 11)

Getting Connected
5
Bluetooth devices encompass a wide
range of sensitivities, and therefore
require an extra degree of flexibility.
Sidetone Null
A screwdriver slot on the side of the
unit allows fine tuning of the intercom
hybrid circuit to remove or minimize
echo. This adjustment is made by
connecting Interloop to a powered
intercom circuit, and engaging the Talk
button while monitoring the Bluetooth
return signal. While speaking into
the Bluetooth device, insert a small
flat blade screwdriver and adjust the
null trim pot back and forth to find the
minimum or desired sidetone level.
Getting Connected
Intercom Audio
In bridging mode, Interloop provides
minimal loading to the intercom audio
line, typically >15k ohms impedance.
In talk mode, a soft start solid state
relay engages audio transmission
with a nominal 200 ohms output
impedance into the intercom line.
A temporary loss in intercom power
will automatically release the solid
state talk relay even if the 9V battery
backup is installed.
Send Level Control
Most Intercom Belt Packs do not
include front panel transmit level
controls. However, most belt packs
use industry standard headsets with
known sensitivity characteristics.