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SAFETY REQUIREMENTS
SAFETY REQUIREMENTS
Please read the following safety precautions before starting up the preamplifier to avoid injury or
damage to devices. In order to avoid any risks, please use the preamplifier merely as stated in this
manual.
Use proper supply voltages
In order to avoid fire hazards and electric shocks as well as damage to the device, only supply
voltages as specified in this manual.
Ground properly
The device is supposed to be grounded through inputs and output. Always ensure proper
grounding before switching on the device to avoid electric shock.
Use input connections properly
The inputs of the device is shielded and the shield is connected to ground via 100 Ohm. Never
apply a voltage to the shield; it may cause damage to the device.
Use proper input voltages
In order to avoid damage to the pre-amplifier do not apply voltages higher than specified.
Applying voltages higher than specified will damage the device and void the warranty.
Never supply the two inputs "+IN" and -IN" with voltages
larger than specified!
IMPORTANT NOTE:
The inputs do NOT survive voltages higher than specified. The
AFT400B is operated without fuse in gain
x1000
.
Observe all device ratings
Be aware of any ratings the pre-amplifier shows. Read the instructions in this manual before
making any connections. Damage to the device as well as electric shocks can be caused.
Use with supplied housing
Never operate the pre-amplifier without the supplied housing. Do not touch any wires or
components of the circuit.
Use overload protection
In order to avoid electric shock and damage to the device, ensure proper overload protection e.g.
by a lightning stroke.
Do not operate a possibly broken pre-amplifier
In case the pre-amplifier could be damaged, do not operate it any more. Please contact service
personnel for maintenance.
Do not operate in an explosive atmosphere
In order to avoid injury or damages to the pre-amplifier, do not operate the device in an explosive
atmosphere.
Manual AFT400B – Rev. 1.02 dated 30/09/20 Page 6 (10)
