Pll Operating Range Of Word Clock In; Phones Out L/ R - Yamaha DME24N Service Manual

e Frequency Characteristics
Measuring Method···Set 1kHz as datum, and measure
a relative value for each input frequency.
Input Frequency Input Level
20Hz +10dBu
20kHz +10dBu
r Maximum Output
Input Frequency Input Level
(Reference Value)
1kHz +30dBu

2-1-3. PLL Operating Range of WORD CLOCK IN

Measuring Points···Analog CH 1 OUT
Measuring Method···Input an analog signal from CH1
input, and measure an output signal from CH1 output.
a. Test at Upper Limit 96kHz+6% (101.76kHz)
· Set the frequency setting of the oscillator to
96kHz+6% (101.76kHz).
· Connect the clock output of the oscillator with a WCLK
IN terminal of the product, and input a clock signal of
the above frequency.
· Press "ENTER" to return "TEST CASE No. Selection
Mode" for a time.
· Select the "TEST CASE:#8" (see 2-1-2-1 Diag Mode
Settings), and press "ENTER".
q Total Harmonic Distortion
Input Frequency Input Level
1kHz +28dBu
b. Test at Lower Limit 44.1kHz-10% (39.69kHz)
· Set the frequency setting of the oscillator to 44.1kHz-
10% (39.69kHz).
· Connect the clock output of the oscillator with a WCLK
IN terminal of the product, and input a clock signal of
the above frequency.
· Press "ENTER" to return "TEST CASE No. Selection
Mode" for a time.
· Select the "TEST CASE:#9" (see 2-1-2-1 Diag Mode
Settings), and press "ENTER".
q Total Harmonic Distortion
Input Frequency Input Level
1kHz +28dBu
Output Level Permissible range
(Reference Value)
+4dBu -1.0~+0.5dB
+4dBu -1.0~+0.5dB
Output Level Permissible range
(Distortion factor)
+24dBu 0.01% or below
Output Level Permissible range
(Reference Value)
+22dBu 0.01% or below
Output Level Permissible range
(Reference Value)
+22dBu 0.015% or below

2-1-4. PHONES OUT L/ R

Conditions
· Measure by using the testing item No. 26 in the test
category "01. Product" of the test program. Select
"TEST CASE #X" depending on the measuring item.
· PHONES LEVEL should be MAX.
· Set 0dBu=0.775Vrms.
· Load of PHONES OUT L/R should be 8Ω.
q Gain, Distortion, Level Difference between L and
R (Both L and R): INT 96kHz
Input Frequency Permissible range Permissible range Permissible range
(Output Level)
1kHz +0.5±1dBu
w Residual Noise (Both L and R): INT 96kHz
Condition: PHONES LEVEL should be MIN.
Permissible range
-86dBu or below
e Frequency Characteristics (Both L and R): INT
96kHz
Condition: Tolerance should be 1KHz as datum.
Input Frequency Permissible range
20Hz -3~0.5dBu
r Frequency Characteristics (Both L and R): INT
96kHz
Condition: Tolerance should be 1KHz as datum.
Input Frequency Permissible range
40kHz -3~0.5dBu
t Maximum Output (Both L and R): INT 96kHz
Input Frequency Permissible range Permissible range
1kHz +3.5±0.5dBu
y Crosstalk between L → R: INT 96kHz
Input Frequency Output Level (L)
(Reference Value)
1kHz +0.5dBu
u Crosstalk between R → L: INT 96kHz
Input Frequency Output Level (R)
(Reference Value)
1kHz +0.5dBu
DME24N/DME64N
(Distortion factor) (Difference Level)
0.1% or below Within 1.0dB
(Distortion factor)
1% or below
Permissible range (R)
(Distortion factor)
1% or below
Permissible range (L)
(Distortion factor)
-60dBu or below
85