51-0156-0100 M07-05 COMPACT8 Àngles.doc 4 of 4
18.
Repeat this procedure on all the input channels. Input 7 has additionally a front side RCA-type input
connection, and input 8 has also a front-side combo-type XLR+JACK connection to use with a
microphone.
19.
Verify output OUT 1 (bal).
•
Change the output checking connection to OUT 1 (bal), verify the sound quality, the OUT 1
volume control sweep (scratch-noise and attenuation).
20.
Verify the L + R mode.
•
Apply input signal only on channel L of LINE A INPUT 1.
•
Check that the outputs do only have music signal on their left channel.
•
Press the SELECTOR L + R pushbutton and check that now there is music on both
channels; however, this function is only available on outputs OUT 1 and OUT 2.
•
The LED associated to this function should light up.
•
The MIX signal bus should remain unaffected by this function, so both the Vu-meter and
the REC output should still function in normal stereo mode.
•
Release again the L + R pushbutton.
21.
OUT 2 (RCA-type) output.
•
Change the output checking connection to OUT 2 (RCA-type), verify the sound quality, the OUT 2
volume control sweep (scratch-noise and attenuation).
Talkover circuitry verification
Control knobs positioning:
Talkover OFF.
EFF. up to maximum.
TIME up to maximum.
INPUT 1 switched to LINE A.
INPUT 8 switched to MIC.
FADER 1 and 8 up to maximum.
1.
Apply an input signal to MICRO 8 (connect a microphone).
2.
Apply an input signal (i.e. music from a CD player) to LINE A.
3.
Get the output signal from OUT 1.
4.
Through OUT 1 we should be able to hear the music mixed with the speech talked through the
microphone.
5.
Switch the TALKOVER button to ON. Verify that the TALKOVER indicating LED lights up.
6.
By now, when the user speaks through the microphone, the music signal from INPUT 1 (CD)
should be damped.
7.
Verify the effect level by sweeping the EFF control knob. When turned to 30dB, the music signal
should be very attenuated when talking through the microphone; when turned to 0dB the music
should remain unchanged.
8.
Verify the TIME function. When turned to 3s, the damped music needs the maximum time available
to recover its nominal level. When turned back to 0.3s the music signal recovers its level almost
immediately.
