
Jan. 2012
4
When you measure the OUTPUT L
insert an empty jack on OUTPUT R.
When you measure the OUTPUT R
insert an empty jack on OUTPUT L.
CH1 = OUTPUT LEFT
It must be 1000hz (
±
20)
It must be 6.00 Vpk (
±1
.00 Vpk)
CH2 = OUTPUT RIGHT
It must be 1000hz (
±
20)
It must be 3.00 Vpk (
±
0.50 Vpk)
OSCILLOSCOPE SETUP:
Volt div. = 5.00V / Time div. = 1.00ms
1.
Produce following wave with external Waveform generator:
Wave generator OUT L:
Freq =1Khz (sine wave)
Amplitude=2,5Vpp (measured with cable not connected to BK-5)
Wave generator OUT R:
Freq =1Khz (sine wave)
Amplitude=2,5Vpp (measured with cable not connected to BK-5)
2.
Check the following values on the oscilloscope:
3.
Keep pressed
VARIATION 1]
button and verify that the waveforms are completely nil:
6.
Press
[START/STOP]
button to go to next test.
16. Noise check
The display shows:
Setting:
•
Remove all connections from BK-5 sockets.
•
Connect the mono audio cable first from
OUTPUT L/MONO
then from
OUTPUT R
to Noise Meter’s input.
Содержание 074021E19
Страница 3: ...BK 5 3 For EU Countries For China For China For EU countries For China ...
Страница 41: ...Jan 2012 44 CIRCUIT BOARD MAIN Board fig b main 1 eps ...
Страница 42: ...BK 5 45 ...
Страница 45: ...BK 5 Jan 2012 51 50 CIRCUIT BOARD JACK B USB BOARD ...
Страница 48: ...BK 5 55 ...
Страница 53: ...BK 5 63 ...
Страница 54: ...BK 5 Jan 2012 65 64 CIRCUIT BOARD LEFT PANEL BOARD PHONES BOARD ...
Страница 57: ...BK 5 69 ...