43
MG12/4
MG16/4
2-17
PHANTOM
Connect a 10k
Ω
load resistance between the pin 1 and 2 of the MIC and short-circuit between the pin 2 and 3.
Turn on the PHANTOM switch(LED shall light) and the voltage between pin 1 and 2 shall be 35 +/- 3V.
Table 2-16-1 [dBu ]
Fader/VR
STEREO OUT GROUP OUT
AUX OUT
C-R OUT
MAX
-78.0
-80.0
-75.0
-72.0
MIN
-100.0
-100.0
-100.0
-87.0
2-15. Equivalent Input Noise
In the state 2-2, connect between the CH INPUT MIC terminals (2pin-Hot and 3pin-Cold) with 150 ohms, the noise level obtained
at ST L OUT shall be less than -43.5dBu.
If it is over than -43.5dBu, calculate the input converted noise level (=noise level -channel gain) and it shall be less than
-127.5dBu.
Connect between the ST INPUT MIC terminals (2pin-Hot and 3pin-Cold) with 150 ohms, the noise level obtained at ST L OUT
shall be less than -39.5dBu.
If it is over than -39.5dBu, calculate the input converted noise level (=noise level -channel gain) and it shall be less than
-123.5dBu.
(Noise is measured with a 12.7kHz -6dB/octave low pass filter.)
2-16. Residual Noise
In the state 2-2, set the Fader and Level Control of all input CH to MIN and set the all Assign switch to OFF.
Then, the noise level shall be less than the level specified in the Table 2-16-1.
* In measuring the C-R OUT and the PHONES, set the ST Fader to MIN.
(Noise is measured with a 12.7kHz -6dB/octave low pass filter.)