3-7
are individually adjustable, but alarm tones are
not adjustable and are set to generate tone greater
than 65 dB.
Circuitry on the Backpanel PCB permits the
Monitor to verify the oscillation from voltage
measured across the speaker, which provides
confirmation that the speaker is indeed generat-
ing audible tones during activation. RF output
is inhibited should the speaker drive current be
absent or too low.
3.2.11 Activation Relay Connector
There is an Accessory Relay Connector, which
provides a relay closure (SPST switch) that may
be used for activating external accessories such as
smoke evacuation units.
3.3
Optional System Configurations
An eight-position configuration dipswitch (S2),
located on the Controller PCB Assembly (A4)
allows a qualified service technician to change
some of the factory default settings. With the
exception of the DACview switch, the configura-
tion dipswitch settings are only detected when
power is initialized, so any changes to the switch
positions must be made with the main power
off. Each switch is OFF in the Down position
and ON in the UP position. The system detects
changes in the DACview switch while power is
on, so it is treated differently. Relevant informa-
tion for the configuration dipswitches appears in
Section 4.9.
