NTi Audio XL2 Sound Level Meter - Manual (Page 91)

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Delay Time
4 Calculated Distance
Distance from measurement position to speaker in meters
or feet, based on the defined temperature in °C or °F
5 Synchronization Time Bar
The automated synchronization allows delay time measure-
ments without any connected electrical reference signal for
100 seconds using the NTi Audio Test CD or 300 seconds
using the Minirator, MR2 or MR-PRO. It displays the time
remaining until the next required synchronization.
6 Calculated Delay Time: Store - Actual
Calculated difference between delay time of speaker A and
speaker B as shown on the next page. The automated dif-
ference calculation simplifies the verification of delay line
arrangements, such as those used in larger halls or audi-
toriums.
7 Actual Delay
Actual measured delay time referring to the electrical refer-
ence signal.
Delay Test utilizes VoiceNote Microphone
The XL2 uses the internal VoiceNote micro-
phone to measure the acoustic delay. Do not
connect any measurement microphone to the
XL2 for the delay time measurement.
Rear Speaker
The rear speaker on the XL2 is disabled during
delay measurements, thereby avoiding mea-
surement failures. The headphone output is ac-
tive.