R
hello everybody
I am newcomer here.I have one question about the alarm signal.
according to the standard,the sound pressure level is measured
with sound press level meter complying with the requirement of IEC 60651
at the location complying with ISO 3744.
If the location with ISO 3744 is a must? test on the open site without reflecting object is ok?
hope your reply?
thanks in advance!
I am newcomer here.I have one question about the alarm signal.
according to the standard,the sound pressure level is measured
with sound press level meter complying with the requirement of IEC 60651
at the location complying with ISO 3744.
If the location with ISO 3744 is a must? test on the open site without reflecting object is ok?
hope your reply?
thanks in advance!