Yamaha AUDIOGRAM 6 Service Manual page 17

Usb audio interface
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2-15-3 Frequency characteristics
In the state of the [Table 2-15.2], check that the output level at the STEREO OUT L, R is within the range of ±3.0 dB compared
with the output at 1 kHz when the signal frequency is set to 20 Hz and 20 kHz.
2-15-4 Distortion
In the state of the [Table 2-15.2], check that the distortion (T.H.D.) when the signal frequency is set to 20 Hz, 1 kHz, and 20 kHz
is equal to or less than the values in the [Table 2-15.4].
Table 2-15.4 [%]
Input Frequency
Distortion (T.H.D.)
20 Hz
1 kHz
20 kHz
2-15-5 Attack/Release time
In the state of the [Table 2-15.2] (except input level shown below), check that the attack time and release time of the output at the
STEREO OUT L, R are within the range shown in the [Table 2-15.5].
ATTACK TIME
Restoration Time
 
* Attack time refers to restoration period when input is changed from -66.0 dBu to -56.0 dBu. (at 90%)
* Release time refers to restoration period when input is changed from -56.0 dBu to -66.0 dBu. (at 90%)
Table 2-15.5 [ms]
STEREO OUT
L, R
Attack time
15 – 35
Release time
130 – 420
 
5.0
1.0
1.0
90%
100%
RELEASE TIME
Restoration Time
AUDIOGRAM6
90%
100%
17

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