CDPM Digital Paging Microphone
Setup And Installation Guide
CLOUD ELECTRONICS LIMITED
NOTE:
This feature is only available if the CDPM group lock is off. See section 7.5 for details of
how to set the group lock.
1. Push the appropriate group button.
2. Depress the ‘TALK’ button and hold.
3. Make the announcement.
4. Zones may be selected/deselected during the announcement.
5. Release the ‘TALK’ button.
In systems using multiple CDPM microphones, it is possible for announcements from different
microphones to coincide. The system’s response to this depends on the priority settings of the
microphones in question. It is not possible for two microphones on the network to make an
announcement at the same time.
If an announcement is interrupted by a higher priority microphone, the initial announcement will
be cut off and the interrupting announcement will take over. The interrupted CDPM will indicate
this interruption by flashing the zone selection LEDs. The selection LEDs will remain lit so that
the announcement may be attempted once the system is free.
If the interrupting microphone is of an equal or lower priority, then the initial announcement will
be allowed to continue to its conclusion. The interrupting CDPM will flash its selected zone LEDs
to indicate that the announcement cannot be made, and that the system is already in use. The
zone selection on the microphone will remain so that the announcement may be attempted once
the system is free.
The CDPM can derive power from either an external power supply, such as the CDPM-PSU, or from a
Cloud host mixer. Only one microphone may be powered from the mixer and the power sharing with the
mixer is switched off once an external power supply is connected to the microphone.
An external power supply can be connected to the CDPM through the 2.1mm coaxial power
socket on the rear panel. Suitable supplies that can be used with the CDPM should be capable
of providing up to 107mA current and should be in the following range; AC:9-17V, DC:12-24V.
Often DC adapters have poor regulation, and some 15V supply outputs can reach as much as
17V. If in doubt, use a 12V AC adapter such as the CDPM-PSU. Polarity at the coaxial power
socket is not important.
Important Note:
Any DC adapter or external power supply should not have its output earthed,
as this may introduce earth loops to the system. Most plug top adapters meet this criterion. The
integrity of the system’s mains earth should NEVER be compromised to meet this requirement
or to solve any earth loop problem.
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