Cloud Electronics PM12 - Manual (Page 12)

PM4/8/12/16 Installation and User Guide v2.2 12
Accessing the internal PCB
With most installations, it will be necessary at some point to access the PM’s internal
PCB. Access is required to make connections to the analogue interface (possibly
including DC power connections) and to connect the associated audio output, to
move the various configuration jumpers and to adjust the mic or chime levels.
To gain access to the PCB, first disconnect any source of external power (e.g. a
local external PSU or the Digital Paging Interface). Then remove the five pozidrive
screws securing the bottom cover plate onto the moulded housing. Gently lift the
housing free, noting that the PCB to which the top panel components are mounted
is connected to the lower PCB by a ribbon cable. Take care not to stretch or snag
either this or the cable from the gooseneck mic.
Re-assembly is the reverse procedure; always use the same screws.
Mounting Options
In most cases, the PM will be used as a desk-top, free-standing unit. In situations
where desk space is at a premium, or where access to the microphone needs to be
restricted, an alternative mounting method is to fix it on a vertical surface such as a
wall. In this case, it may be appropriate to fit a shorter gooseneck mic, as the standard
one (300 mm) may prove awkward in use and possibly constitute a hazard.
Free-standing
No special provisions are needed to use the PM in a free-standing mode. Cable access
is via the rear glands and the unit is provided with four rubber feet to prevent slipping
on a polished surface. The standard 300 mm gooseneck microphone will be suitable
for all normal desk or counter locations.
Wall Mounting
NOTE: if the standard gooseneck mic is to be replaced with the shorter alternative
(see Fitting the M1100166 gooseneck microphone on the following page), perform the
replacement before mounting the PM on the wall.
The metal baseplate of the PM is fitted with two keyhole slots which provide a simple
method of wall mounting.
The PM can be wall-mounted on two round-head or pan-head screws with heads
of between 5 and 10 mm dia. At the desired location, drill two holes in the wall 183
mm apart horizontally. Use a drill appropriate for the wall construction and type of
wall fixing employed. Insert the screws and tighten until approx 4-5 mm of the screw
Installation