RRM02 - Product Manual
Issue: 02 complete, approved
Page 24 of 68
4.3.2
Connection of Multiple RRM02 Units for Single Audio Zone Group
Multiple RRM02 units can be used with ASL PA/VA systems to provide larger radio microphone coverage
areas than is available with a single unit with or without antennae combiners and further antennae.
The connection methods described in the following sections provide this function with ability for a user to
move from one RRM02’s range to the next RRM02’s range while making a broadcast.
Multiple RRM02 applications where chime is not required are implemented using the PTT relay outputs of
the RRM02 to trigger the routes to required audio zone, as described in Section “
4.3.2.1 Multiple RRM02
Units on One Zone (Without Chime)
” (page
24
).
Similar connections are used in applications requiring chime. Chime is implemented by using one spare
Router output, one spare Router input, and a BMB01 Remote I/O Unit, as described in Section “
4.3.2.2
Multiple RRM02 Units on One Zone (With Chime)
” (page
27
).
4.3.2.1
Multiple RRM02 Units on One Zone (Without Chime)
If the multiple RRM02 units for a single zone do not need to have a chime configured then they each have
their audio outputs connected to a Router audio input, with their PTT relay outputs connected to Router
contact inputs. The serial data lines are not connected to the Router with the contact inputs being used to
make the routes, and the audio inputs are set to ‘Miscellaneous Input’ with equal priority. This scheme is
illustrated in
Figure 17
for two RRM02 units, and the connection diagram is shown in
Figure 18
.
Refer to Section “
6.2.1 Multiple RRM02 Units on One Zone (Without Chime)
” (page
45
) for ASL PA/VA
system commissioning details.
L
•
A very short dip in audio occurs when the Router switches from one RRM02 to the other.
•
The BUSY LED will not operate, and the ACTIVE LED will not necessarily indicate that an
announcement is in progress on the RRM02 units. The ACTIVE LED will only indicate that
the PTT button is being held down.
•
The Router can be a VAR Router, a DAU (Distributed Amplifier Unit) or an ACU (Audio
Control Unit).
•
The RRM02 internal microphones faults will not be reported at the Router although the
audio connections will still be monitored.
•
The maximum number of RRM02 units is limited by the available number of Router inputs.
