Larson Davis System 824 - Rooms RTA Instrument Definition

11/8/00 RTA (optional) 10-17
RT60-B
The RT60-B setup is designed to measure an RT60 by excit-
ing a room with impulsive noise such as a gunshot or a bal-
lon popping and is configured in the following way:
• Detector: Linear
• Detector Time: 0.01 seconds
•Autostore: Yes
• PreTrigger: 10
• Save ByTime: Yes
• Triggering: ON
• Trigger Source: 1 kHz
•Arm Mode: Now
• Trigger Mode: L >
• Trigger Level: 80.0 dB
• Trigger Time: 00.0000 seconds
• End Mode: Time
• End Time: 3.0 seconds
• Then: Stop
Rooms RTA Instrument Definition
The System 824 has an Instrument Definition that makes it
easy to measure room criteria, NCB and RC, using the RTA
in 1/1 octave bandwidth. The setup is configured to take data
for 10 seconds at each location in a room. Each measure-
ment is automatically stored in the Autostore ByTime his-
tory.
ROOMS.RTA is configured in the following way:
• Bandwidth: 1/1 octave