NTi Audio XL2 Sound Level Meter - Manual (Page 29)

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Sound Level Meter
8 Phantom Power Supply
48V The XL2 provides 48 V phantom power supply
to the connection microphone or sensor.
ASD An NTi Audio measurement microphone with
automated sensor detection ASD is connect-
ed. The XL2 reads the electronic data sheet of
the microphone and switches the 48V phan-
tom power automatically on
48V Phantom power is switched off.
9 Result Symbols / Capture
This field offers two functions:
Symbols for measurement results • 15
Upper RTA parameter displayed as line.
Lower RTA parameter displayed as bargraph.
Timer Mode Repeat Synchronized
Provides automated repeated measure-
ments synchronized to the XL2 real-time clock.
Press start
to begin the measurement.
In order to align the selected preset measurement
time with the real-time clock, the XL2 shortens
the first cycle to match the real-time clock syn-
chronization. All following measurement cycles
are synchronized to the real-time clock.
For example, the cycle time setting is 30 minutes
and the measurement starts at 7.50 a.m. -> the
first test cycle measures from 7.50 - 8.00 a.m.
Thereafter a new test cycle starts automatically
for 30 minutes. The 30-minute cycles repeat until
the measurement is stopped.
The measurements in the synchronized repeat
timer mode start exactly on the half or full hour in
accordance with DIN 15905.
7 Preset Measurement Time
Adjustment of preset measurement time for single and re-
peat timer setting.