RRM02 - Product Manual
Issue: 02 complete, approved
Page 27 of 68
4.3.2.2
Multiple RRM02 Units on One Zone (With Chime)
If the multiple RRM02 units for a single zone needs 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 which trigger the routes to an intermediate output. This intermediate output is connected to an
intermediate audio input, which is then routed to the actual required audio zone by a routing contact on a
BMB01 Remote I/O Unit. The BMB01 contact closure is provided by a BMB01 digital output which is
configured to indicate busy when any of the RRM02 audio inputs is routed to the intermediate output. The
serial data lines are not connected to the Router, and the audio inputs are set to ‘Miscellaneous Input’ with
equal priority. This scheme is illustrated in
Figure 19
for two RRM02 units, and the connection diagram is
shown in
Figure 20
.
Refer to Section “
6.2.2 Multiple RRM02 Units on One Zone (With Chime)
” (page
47
) for ASL PA/VA system
commissioning details.
L
•
This scheme requires a spare audio input and output at the Router.
•
A brief pause 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 either a VAR Router, or a DAU (Distributed Amplifier 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.
