AudioControl SA-3052A, Руководство по эксплуатации

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SA-3052A Owner’s Manual
7-4
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3) Press the FAST/MED/SLOW button. All three speed LED’s will begin to flash.
This indicates the timer is standing by.
4) When you are ready to crank the system and start the timer, press the FAST/MED/
SLOW button again. A thirty second bargraph will start counting down across the bottom
of the display.
5) After 30 seconds, the three speed LED’s will come on and the display will freeze.
This is the maximum SPL during the countdown.
ERROR MESSAGES
If the HAL-30 determines that something isn’t correct scoring a curve, an error mes-
sage is displayed on the screen. Once you have fixed the problem, press the
RTA/RECALL button to clear the error message.
ERROR: MISS - Missing Octaves
More than one octave is missing in
the frequency curve being judged. Al-
though you can probably infer the trend
from the slope of the curve, the SA-
3052A would rather leave such things to
humans. They excel at reading between
the lines.
In this example, there are a couple of possible explanations for the missing octave:
1)
Low input level:
the missing bands could be lurking just off the bottom of the
screen. Try adjusting the ±10dB fine input control up to see if more of the curve can be
brought onto the display without any of the bands going off the top.
2) System failure : A “gap” in the frequency response can be the result of part of the
system not playing. The mid-bass amp, crossover or speaker may have failed. Have the
competitor double check their system to make certain everything is working correctly. It
could be a simple blown fuse causing this hole in the response.
ERROR: HIGH - High reading
The HAL-30 has determined that
several frequency bands are off the top
of the scale. Lower the system volume
to get the curve onto the display and
repeat the measurement.
ERROR: 3dB - Wrong display range used
The dB per step switch on the SA-3052A MUST
be set on 3dB/Step for the scoring option to func-
tion. Set the dB per step switch to 3 and press the
print button again.
SA-3052
SA-3052
Chapter 7 - Contest Scoring