LRF-04
User’’s manual
23
The LRF-04 may also programme non-working periods, in which the sound pressure limit
may be exceeded without penalisation. In this case, the measured levels and the incidents
that occurred will be stored.
The LRF-04 is equipped with an internal battery that allows it to
continue working when disconnected from the mains or in the event of a power cut. When
the LRF-04 is working fed by a battery, it attenuates 60 dB. The battery lasts for one day.
Before the battery runs out, the LRF-04 records the day and time, storing a record of the last
10 occasions on which this occurred. When the battery has run out, the LRF-04 turns off
automatically and attenuates 60 dB until the next time it is connected to the mains. The
stored information is not lost. When the unit is connected to the mains once more, the LRF-
04 continues to function as normal.
A luminous external display may be connected to the
LRF-04, allowing you to observe from anywhere in the establishment and in real time the
measured sound pressure level together with the attenuation level applied by the LRF-04.
The LRF-04 is equipped with an internal continuous self-verification system that allows you
to detect and record possible tampering of
both, the measurement equipment and the
musical chain.
The LRF-04 frequency sound level recorder-limiter
1
2
4
3
5
1
4
7
A
2
5
8
0
3
6
9
B
F
E
D
C
DESCRIPTION
1
PARALLEL PRINTER PORT
2
USB PORT
3
LIQUID CRYSTAL (LCD) DISPLAY
4
PROGRAMME KEY
5
NUMERICAL KEYBOARD
6
SERIAL PORT OUTPUT FOR MODEM
7
OUTPUT FOR EXTERNAL DISPLAY
8
SENSOR INPUT
9
LEFT CHANNEL BALANCED INPUT (XLR)
10
LEFT CHANNEL NON-BALANCED INPUT (RCA)
11
RIGHT CHANNEL BALANCED INPUT (XLR)
12
RIGHT CHANNEL NON-BALANCED INPUT (RCA)
13
LEFT CHANNEL BALANCED OUTPUT (XLR)
14
LEFT CHANNEL NON-BALANCED OUTPUT (RCA)
15
RIGHT CHANNEL BALANCED OUTPUT (XLR)
16
RIGHT CHANNEL NON-BALANCED OUTPUT (RCA)
17
MAINS CABLE
18
EARTH
19
SUPPLY FOR MODEM OUTPUT