R o o m
c o r r e c t i o n
4 9
• The lead from the SPL meter is intact.
• The SPL meter is switched on and set to the 90dB band, or the
band which includes 90dB, and with C weighting.
If the loudspeakers measured less than 75dB SPL during the
calibration phase it may be better to use the 80dB range.
• The lead from the SPL meter is connected to the correct input,
A8 (L) on the G68.
• The
Sensitivity
setting is adequate for the SPL meter or
microphone.
The sensitivity value for analogue inputs is given in rms volts
(Vrms). For example a sensitivity of 1Vrms allows a signal of
2.8Vpp. A sensitivity of 1V is recommended for use with most SPL
meters though 0.7V may be preferable for those with lower level
output.
Power OK, SNR less than 18
The following error will be displayed:
The most likely cause of this problem is that an analogue source is
connected to the input chosen for the microphone.
• Check that the lead from the SPL meter is connected to the input
you have chosen for the microphone test.
Another possibility is that the lead from the SPL meter is in bad
condition and only making a poor connection.
Power OK, SNR between 18 and 34
The following error will be displayed:
The reasons for this are described in detail in the following section
where example measurements are also shown.
Summary of Contents for Configuration Program
Page 1: ...Meridian Configuration Program Guide...
Page 4: ...C o n t e n t s i v...
