AUDIOGRAM3
12
1. Measurement
condition
1-1 Environment
Temperature
(5
˚
C – 40
˚
C)
Humidity (30% – 90%)
1-2 Power
supply
Power is supplied from a personal computer. (Powered through USB bus)
2. Electric
characteristics
2-0
0 dBu = 0.775 Vrms
2-1 Preparation
Load resistor of each output terminal is as follows:
PHONES (L, R) : 40
Ω
(3 W or more)
Others
:
10k
Ω
2-2
Unless otherwise speci
fi
ed, the operation elements shall be set as follows,
•
INPUT1
LEVEL control (GAIN control)
: Maximum
MIC/INST switch
: OFF (MIC)
•
INPUT2
LEVEL control (GAIN control)
: Maximum
•
OUTPUT
LEVEL control (MASTER level control) : Maximum
•
Others
PHANTOM switch
: OFF
2-3
Use 1 kHz sine wave for input signal unless otherwise speci
fi
ed.
2-4
Signal source impedance should be 150
Ω
.
2-5 Power
indicator
Check that the POWER LED lights when the personal computer is connected.
INSPECTIONS
INPUT1
INPUT2
OUTPUT
Level control
(GAIN control)
Level control
(GAIN control)
Level control
(MASTER Level control)
MIC/INST switch
PHANTOM switch
