Schwarzbeck HFRA SF02G Passive Magnetic Transmitting Loop Antenna

Tunable passive magnetic transmitting loop antenna. Designed to emit magnetic fields of very high field strength at frequencies from 10 kHz up to 30 MHz. With monitoring loop HFRAE 5163 to control the generated field strength.

The antenna is designed according to the following test methods: VG95373- 13:2008-11 and VG95373- 23:2008-11 to test electronic equipment against radiated susceptibility. ISO 14708-3 chapter 27.104 to test implantable neurostimulators against magnetic fields.

Warnings

Many components and cables inside the HFRA SF02G carry the supply voltage.

At high input signal levels there is very high voltage (several kilovolt) inside the chassis and at the loop surface, even if the device itself is switched off.

For the risk of severe injury it is strictly forbidden to touch the device during operation, no matter if the HFRA SF02G is switched on or off. Never open the chassis of the device!

When higher input levels are applied there are very high field strengths around the antenna. Be sure to fulfil the legal requirements of the country of operation concerning the generated electromagnetic fields. Also comply with the respective regulations for the protection of human operators. Only for use in shielded cabinets! Do not enter the cabinet during operation!

Only trained personnel may use this device.

General Precautions

The following general safety precautions should always be considered when working with antennas:

• Prevent Antennas from falling down!
• Keep safe distance to power lines!
• Observe the danger of stumbling over cables!
• Check the protection earth connections of the used equipment!
• Attach danger notices in the location of use!

Mains Voltage Selector / Fuse Holder

Disconnect mains cable before working on voltage selector / fuse holder!

The voltage selection jumper has to be set to the local mains voltage.

Functionality

The HFRA SF02G is a passive magnetic loop antenna. Switch-able capacitors allow tuning the transmitting loop from 10 kHz up to 30 MHz. The selection of the most suitable capacitor values is performed automatically. The operator can manually tune the antenna to a requested frequency.

Benefits

Antennas tuned up to resonance generate the highest possible field strength from a given input power. Non-matchedantennas have one main-resonance corresponding to the mechanical dimension of the loop. The tunable resonance of the HFRA SF02G allows to provide the required field strengths of the test method SF02G with moderate input power. By its broadband high efficiency it allows to perform the test in the complete frequency range from 10 kHz to 30 MHz without any change of the set up.