User manual

22
COMMENTS: pressing the ‘undo’ switch allows you to
return at any time to the previous setting or to cancel the
operation.
If you use Hera together with Argos and you don’t hear
any noise, please make sure to set the correct operation
mode in option 2.
If you use an external tone or pink-noise generator, be
sure to not modify its output level during the calibration
procedure.
To calibrate the Hera proceed as follows:
• Turn the ampliers down to their lowest setting.
• Press ‘enter’. Hera will ask you to place the measuring
microphone at the point where the sound is normally
tested (Microphone level at ear), for example in the
middle of the dance oor or wherever the authorities
normally make their level tests.
• Press ‘enter’. If Hera is used together with Argos, it will
now supply a pink- noise. If not, the Hera will ask you
to supply one. Press ‘enter’ again when you are ready.
• Slowly raise the amplier gain to give a level of around
80dB. When the level is stable press ‘enter’.
• Do not touch the amplier gain until calibration
procedure is over !
• If no Argos is connected. Turn the pink-noise off and
press ‘enter’.
• Hera then asks you to place the microphone where it will
be normally used (denitive microphone placement), for
example on the ceiling. When ready press ‘enter’.
• The Argos will once again generate pink-noise.Or
you will be asked to turn on your external pink-noise
generator. Press ‘enter’ when you are ready.
• Hera will display the level measured, which is likely to
be different from the level on the dance oor. When the
level has stabilised press ‘enter’.
• If no Argos is connected. Turn the pink-noise off and
press ‘enter’.
• The Hera will display the level difference between the
two positions and will ask you to accept by pressing
‘enter’ or to reject by pressing ‘undo’
OPTION 4.4: Manual compensation setting
This option is used to manually enter the compensation. The
actual compensation in decibel is shown on the LED display.
Turn the rotary encoder to adjust it. Press ‘enter’ to conrm
and ‘undo’ to cancel.
Adjustment range goes from -20 to +20 dB per tenth of dB step.
OPERATION SET-UP
OPTION 5: Adjust threshold
OPTION 5.1: Selecting threshold mode
The limit threshold can be either constant or can vary following
a weekly list.
You can choose between ‘Always xxx dB’ or ‘follow list’. Select
by turning the encoder and then pressing ‘enter’.
OPTION 5.2: Threshold by default
This option enables you to set the threshold when you have
chosen the option ‘Always xxx dB’. Select by turning the
encoder to the desired value and then press ‘enter’.
Adjustment range is from 70 to 110 dB.
OPTION 5.3: Editing the weekly list
The weekly list allows the 7-day week to be sliced into 4 daily
time periods, making a total of 28. The threshold can be
different for each of these periods. The beginning of one period
marks the end of another.
Press ‘enter’ and the Hera will display the following message:
This shows the rst period, which begins Monday at 3 a.m. and
ends at 8 a.m. Using the rotary encoder you can adjust the
threshold for this period. This will be shown on the LED display
at the left of the Hera front panel.
Only the time shown on the rst line can be changed on this
screen. It can be changed using the ‘next’ and ‘exit’ buttons,
‘exit’ to increase the time in hourly intervals and ‘next’ to
decrease it by the same amount. The end time, shown on the
second line, indicates the start time of the next period. The one
period’s end time cannot overlap the next period’s start time.