Toa VX-2000SF - 11 BLOCK Diagram; Pilot Tone Detection Module VX-200 SP-2

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11.1. Pilot Tone Detection Module VX-200SP-2
Overheat Status Input DC Fuse Blowout Detection Input Standby Control Output Audio Signal Output (balanced) Audio Monitor Output (balanced)
Speaker Output [SP OUT] Power Amplifier Input [PA IN] External Attenuator Control Line Monitor Input [LINE MONITOR]
Power Amplifier Link Connector [PA LINK]
Standby amplifier Bus Connector [STANDBY PA BUS]
Detection
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Ground Fault Detection
SA2
LA
RM-200XF's CPU SW
OFF
ON
Equaliser Card VX-200SE
OPTION
SA1
Audio Bus 1 Audio Bus 2 Audio Bus 3 Audio Bus 4
Pilot Tone Bus 1
40 kHz
Pilot Tone Bus 2
20 kHz
Pilot Tone Monitor Bus 1 (20 kHz) Pilot Tone Monitor Bus 2 (40 kHz)
Standby Amplifier Bus
PhotoMOS RELAY
[End-of-line unit]
Pilot Tone Bus 3
40 Hz
Audio Monitor Bus
BA
[ATT CTRL]
H C H C C H H
N1
C
N2
C
H C
H C E
Controls the switch pointed by an arrow with the voltage difference between the speaker line and the equipment chassis.
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11. BLOCK DIAGRAM