Cloud Electronics PM1 - Manual (Page 9)

PM1 Installation and User Guide v1.0 9
Cables and connections
Connections to the PM1 are made via two 3-way screw-terminal connectors on the
internal PCB. Two cut-outs are provided at the rear of the base moulding for cable
access; these can accommodate cables up to 9 mm diameter. A single 2-pair cable
(with an individual screen for each pair) provides the neatest finish, though using two
separate cables for the audio and access connections is perfectly acceptable
(see page 11 for information regarding use of 2-pair cable).
To access the internal connectors, turn the microphone upside-down and remove the
five self-tapping screws securing the steel baseplate to the moulded plastic base (item
6 in the baseplate diagram on page 7). Gently remove the baseplate from the base
moulding; be careful not to strain the internal mic capsule cable.
Audio connection
If using two separate cables, the audio cable should be a good quality, two-core,
screened microphone cable. The cable should be fed through the left-hand of the
two cable clamps (looking from the rear of the unit), and connected to the left-hand
screw-terminal block (marked AUDIO) on the internal PCB.
Connect to the terminal block as follows:
TERMINAL USE TYPICAL CABLE COLOUR
Hot Phase (+) Red
Cold Anti-phase (-) Black
Screen Screen (Scn) Screen
The other end of the audio cable should be connected to a suitable microphone
input on the host mixer (or zoner). Consult the Installation Guide for the mixer
to confirm the most suitable method of connection. It may also be necessary to
configure the microphone input for use with a paging microphone. As all recent
Cloud mixers and zoners are designed with this application in mind, connection to
them is straightforward.
The maximum cable run over which the microphone will operate satisfactorily is a
function of the cable quality, the design of the host mixer’s input stage and the level
of electrical noise present in the installation environment. As rough guidance, with
professional-quality mic cable and a Cloud mixer, 100 m should present no problems.
Installation