Part - Studio Lights
Part - Studio Lights
Part - Studio Lights
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AMPLIFIER MONITORING DEVICE AUTOMATIC<br />
For main amplifiers and 2 backup amplifiers (pilot tone and ground fault)<br />
Description<br />
The FA-242 Fault Auto Exchanger permits automatic<br />
monitoring of up to 8 amplifiers. This includes the monitoring<br />
of the actual function of the amplifier with pilot tone and, at<br />
the same time, the monitoring for ground faults. If an<br />
amplifier fails, the device automatically switches over to a<br />
backup amplifier. After the fault has been eliminated, the<br />
amplifier monitoring device automatically switches back to<br />
the main amplifier.<br />
Please consider the following features:<br />
● The ground fault detection function may also be<br />
deactivated, if required.<br />
● The device has a volume control for each main amplifier.<br />
● With terminals which are not used, the RESET button of<br />
the respective input must be pressed.<br />
*<br />
● Ground faults are indicated through LEDs and an audible<br />
signal (can be disabled).<br />
● The failure of an amplifier is also indicated through LEDs<br />
and an audible signal, which may also be switched off.<br />
● The amplifier monitoring device is equipped with a pilot<br />
tone generator (22 kHz).<br />
● The audio inputs and outputs have been designed with<br />
balanced connections.<br />
● Only amplifiers with output transformers can be<br />
monitored, as otherwise the ground fault LED flashes.<br />
● In the case of an amplifier failure, an additional<br />
connection supplies 7 V for the switching of external<br />
devices.<br />
● Speaker and control cables are connected by means of<br />
screw-type connectors.<br />
● When 2 FA-242 devices are used, 16 amplifiers can be<br />
connected to a backup amplifier.<br />
● The amplifier monitoring device operates on mains power<br />
(230 V) or 24 V DC (emergency power supply).<br />
● It is possible to switch 8 amplifiers to 1 backup amplifier<br />
or to set up 2 groups with 4 amplifiers each, which then<br />
can be switched to 2 backup amplifiers.<br />
Technical data<br />
FA-242<br />
Input/output signal ratio<br />
1:1 (level variable)<br />
Maximum input level<br />
+18 dB<br />
Frequency response<br />
less than –0.5 dB (20 Hz - 20 kHz)<br />
Signal-to-noise ratio<br />
better than 86 dB<br />
THD less than 0.005 %<br />
Crosstalk<br />
better than 80 dB<br />
Power consumption<br />
20 W<br />
Power supply<br />
230 V mains current and 24 V DC<br />
Dimensions (W x H x D) in mm 483 x 88 x 200, 2 RU<br />
Weight<br />
4.2 kg<br />
Amplifier monitoring device, (2 RU) . . . . . . . . . . . . . . . . . . FA-242<br />
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