Yamaha Steinberg MR816SCX Service Manual page 45

<2-7> Crosstalk (OUTPUT 1 – 8)
Set up as in description marked
<2-1> (P. 44).
Then, adjust input level so that output level is as in
the description below:
Unit:[dBu]
OUTPUT OUTPUT LEVEL
OUTPUT 1 – 8 +18
Signal
Resistor
Input CH
(*2)
(MIC)
CH 1 CH 2
CH 2 CH 3
CH 3 CH 4
CH 4 CH 5
CH 5 CH 6
CH 6 CH 7
CH 7 CH 8
* Turn ON the [PAD] switches of INPUT channel 1 – 8.
*2: Connect 150 Ω resistor to the input terminals as
follows:
MIC/LINE INPUT CH 1 ‒ 8:
Between pin 2 (Hot) and pin 3 (Cold)
Measure the output level at the [OUTPUT 2 ‒ 8]
terminals.
Check that the noise levels are as follows:
INPUT OUTPUT 2 – 8
MIC/LINE INPUT 1 – 7
* Use 22 Hz HPF and 30 kHz LPF.
<2-8> Crosstalk (Headphones 1, 2)
Set up as in description marked
<2-1> (P. 44).
Then, adjust input level so that output level is as in
the description below:
OUTPUT OUTPUT LEVEL
Headphones 1, 2
Signal Input
Resistor (*3)
CH (MIC)
CH 1 Monitor 1–R
CH 2 Monitor 1–L
CH 3 Monitor 2–R
CH 4 Monitor 2–L
* Turn ON the [PAD] switches of INPUT channel 1 – 4.
*3: Connect 150 Ω resistor to the input terminals as
follows:
MIC/LINE INPUT 1 ‒ 4:
Between pin 2 (Hot) and pin 3 (Cold)
1 in procedure
Unit: [dBu]
-70 or less
3
in procedure
Unit:[dBu]
+7.1
Measure the output level at the Headphones [1, 2]
terminals.
Check that the noise levels are as follows:
INPUT Headphones 1, 2
MIC/LINE INPUT 1 – 4
* Use 22 Hz HPF and 30 kHz LPF.
<2-9> Mute
Set up as in description marked
procedure <2-1> (P. 44).
Execute the Muting Circuit. (Refer to "• Muting
Circuit" in procedure 5-1-3-1 (P. 43))
Check the mute function of corresponding output
terminal according to the following table.
OUTPUT LEVEL
OUTPUT TERMINAL
(after MUTE)
OUTPUT 1 – 8
Headphones 1, 2
* Use 12.7 Hz, -6 dB/oct LPF.
<2-10> INSERT I/O
Set up as in description marked
<2-1> (P. 44).
Insert a plug, which has wiring connection as in the
following fi gure, to the [INSERT I/O 1, 2] terminal
to be measured.
Check that the level at the [OUTPUT 1, 2] terminal
is as described below.
Sleeve: GND
Tip: output
Ring: input
Unit: [dBu]
OUTPUT 1, 2
-5 +/-3
MR816CSX/MR816X
Unit: [dBu]
-60 or less
1 3
and in
Unit: [dBu]
-85 or less
-85 or less
2
in procedure
5.1k ohms
5.1k ohms
45