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Audio gain level and headphone gain level
The audio gain level and headphone gain level can be adjusted using potentiometers on the
RMM printed circuit board. To set the gain levels:
•
Adjust potentiometers P1 (audio gain level) and P2 (headphone gain level).
3.
OPERATING THE RMM
It is possible to carry out the following operations using the RMM:
•
Record a new message
•
Delete a message
•
Play a message
•
Monitor a message
•
Monitor the status of the RMM
These operations are described below.
3.1
Recording a new message
Recording a message using the GMM/MIX
To record a message using the GMM/MIX:
1. Ensure that the microphone/line input is connected properly to one of the GMM/MIX rear
connectors.
Note: Microphones can be either condenser types (with phantom power supply) or dynamic types.
For messages without chime tone or priority, a microphone with a 3-pole connector can be used with
the GMM/MIX set to mix mode. In this case, message recording can only be started and stopped
using controls on the front panel of the RMM. Otherwise a microphone with a male 5-pole DIN
connector (with remote switching contacts) should be used with the GMM/MIX set to mix-on-demand
or priority mode. Two Philips microphones are available (LBB 9521/10 and LBB 9518/10) with a ded-
icated LED indicator and switch to show system status. Any messages recorded using the GMM/MIX
will be distributed to the SM 25B system bus, and will therefore be distributed to the selected zones
while recording is taking place. It may therefore be necessary to make such recordings when the pub-
lic address venue is not being used, or with the speaker outputs disconnected.
2. Ensure that the configuration settings for the GMM/MIX, for example priority settings,
chime tone and speech filter, are correctly made. For more information, refer to the
relevant Instructions For Use and Installation Instructions.
3. Press the mode selector push button (item 6) until the yellow indicator LED (item 4) is on
(monitor mode).
4. Press the message select push button (item 8) until the required message number is
displayed on the message indicator (item 5).
Note: A total of 10 messages can be recorded (numbered 0 to 9). Continually pressing the message
select push button will toggle through all 10 messages. Any message number that is empty i.e. has no
recorded message will flash alternately with a ‘-’ symbol.
5. Press the mode selector push button (item 6) until the red mode indicator LED (item 3)
is on (record mode).
Note: If, upon entering the record mode, the message number changes to a continuous ‘-’ symbol,
this indicates that no more memory space is left to record another message. One or more of the exist-
ing messages should first be deleted to clear some memory.
6. Press the start/stop button (item 7) to start recording, if a microphone without remote
switching contacts is being used. Otherwise, activating the microphone switch will start
and stop the recording.
Содержание LBB 2541/10
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