Center 320 - Calibration, Preparation, and Operation; Calibration Procedures

8
SLOW : for checking average level of fluctuating noise.
SOUND LEVEL METER
 Microphone
1/2 inch Electret Condenser microphone
 CAL potentiometer
Calibration control , For level calibration adjustment.
 AC output terminal
1 Vrms Corresponding to each range step.
Output impedance ≒ 50Ω
Output signal by standard 3.5mm coaxial socket signal on pin.
11
DC output terminal
Output : 10mV/dB
Output impedance ≒ 100Ω
Output signal by standard 3.5mm coaxial socket signal on pin.
12
External DC 9V power supply terminal
For connection with AC adapter.
13
Tripod mounting screw.
Signal
Ground