MRC EQ Limit, Руководство пользователя

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MRC AUDIO EQ
Limit
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Auxiliary output pins can be activated and configured to turn on or off auxiliary external
equipment activated by an alarm or pre-alarm (Request schematics for proper use of the AUX
CONNECTOR).
The
EQ Limit limiter has capacity to register three types of alarms of the proper sound system,
plus an external alarm described in the Preferences tab description.

Microphone Alarm . Arises when the sensing microphone is disconnected from its
corresponding input connector.

SPL Alarm . Arises when the sound level sensed by any of the two microphones
surpasses the limiting level plus a margin, during a persistence time.

Efficiency Alarm . Or manipulation alarm, arises when the microphone level is under
the Line Out level in a quantity greater than the margin condition, during the persistence
time. This alarm is useful only if a calibration of the installation is performed; because
the calibration of the sound system is performed only with microphone 1, it is possible
to configure this alarm only for microphone 1.
If Microphone 2 is configured not to be active in the
Preference tab, its corresponding
configuration windows and boxes do not appear:
The adjustable parameters for each type of alarm are:
- Seconds: the persistence time in seconds to consider an alarm condition.
-
Margin: the sound level margin with respect to the limiting level in the SPL alarm or with
respect to the Line Out level in the Efi alarm, which must be surpassed in the SPL alarm
or under passed in the Efi alarm to start counting the persistence time.
-
Record: if checked the alarm is recorded in the events memory.
-
Mute: if checked the corresponding alarm causes a mute in the sound system during
the time typed into the Mute time box.
-
Output Pin: if checked the EQlimit limiter activates a pin in the AUX connector located
at the back panel of the limiter. This pin is a two state output: 5 volts or 0 volts. And the
active level either 5 volts or 0 volts can be chosen with the
Output pin Active level
switch. This is: if the switch is at its Off position, the output pin at the AUX connector will
normally be at the 5 volts level; when the alarm occurs, the level at the AUX output pin
changes to 0 volts. On the contrary, if the switch is at its
On position, the AUX output
pin is normally at the 0 volts level and changes to 5 volts when the alarm occurs.
Adjust date & time – Click on the PC button to read the date and time from the PC, and click
on the Adjust button to transfer this date and time to the limiter. Alternatively, the date and
time can be adjusted manually before clicking on the Adjust button.
If daylight saving leap hour is desired, check the
Daylight saving box and adjust the date and
hour of the hour change, before clicking on the Adjust button.
Special Periods – The EQ Limit limiter has the capacity to configure up to 10 special periods
in which the maximum permitted level and timetable can be different to the normal settings.