The MagTest System is a system to generate magnetic fields and to perform tests regarding the susceptibility against magnetic fields in accordance to military, civil, automotive and manufacturer’s standards.
At least the system consists of a function generator as signal source, a power amplifier and a radiating loop or Helmholtz coil.
The generated fields are in a linear relation to the coil current. The coil current is measured by an rms-voltmeter and a shunt or a current probe. The magnetic field strength can be checked with a monitoring loop and a rms-voltmeter.
To fulfil highest requirements on large Helmholtz-coils a compensation network is needed. It compensates the reactance of the coil with capacitors.
With the Schwarzbeck Magtest System Software AC immunity testing is fully automatized.
Overview MagTest System combinations for immunity testing
MagTest System Description
The Schwarzbeck´s Mess-Elektronik MagTest software can be used to perform magnetic field immunity tests according to several standards, such as, for example: MIL-STD-461G, ISO 11452-8, DIN EN 61000-4-8 and many others. The MagTest software can control the hardware to produce…
Universal matching network with built-in shunt resistor to compensate for the inductance of Helmholtz coils, GPIB or RS232 controllable.
The SW 9605 Current Clamp was designed to measure RF-currents on conductors or conductor bundles with a maximum diameter of 23 mm. The conversion ratio is 1:1 in the nominal frequency range, therefore the receiver-reading in dBµV corresponds directly to the current in dBµA.
The Hall sensor HS 5136 can be used to measure magnetic field strengths for immunity tests according to MIL STD 461 and various automotive standards. It measures static and dynamic magnetic fields with field strengths up to 9000 A/m (pk).…
Aluminium electrolytic capacitor with reverse voltage protection and protection against contact. For the generating of magnetic DC fields Helmholtz-Coils can be driven by laboratory power supplies. The generated fields are in a strongly linear relation to the coil current. The…
The SHUNT 9571 is a measuring resistor which can be used in systems where magnetic fields have to be generated. When connected in series between an amplifier and a Helmholtz coil, the current can be measured indirectly. The voltage drop is proportional to the current through the coil.
The LFPA 9733 C is a multi-purpose power amplifier and can be used within the frequency range from 5 Hz to 1 MHz. Typical applications are magnetic immunity testing according to automotive standards and MIL-461.
The HFRAE 5163 loop antenna for magnetic fields is designed to measure medium to high-level field strengths in the frequency range from 9 kHz to 400 MHz in combination with 50 Ω measuring instruments. The loop is shielded against electrical…
High power resistor with low inductance, which can be used in systems where magnetic fields have to be gener-ated. When connected in series between an amplifier and a Helmholtz coil, the current can be measured indirectly. The voltage drop is proportional to the current through the coil. It can be used for testing according to MIL STD 461 (CS101) and ISO 11452 10.
The current sensor CP 9610 can measure up to 40 A in a frequency range from DC – 1 MHz. It is galvanically isolated and can withstand a maximum voltage of 210 VPK / VDC. The internal resistance of the…
The magnetic, handheld field sensor coil FESP 5134-40 was designed to determine the magnetic fieldstrength during immunity tests in conjunction with an appropriate voltmeter. The main application is in the audio frequency range and above up to approx. 250 kHz…
The magnetic field monitoring loop FESP 5133-7/41 was designed to measure magnetic fields in the frequency range up to 200 kHz. The coil is made of 36 turns AWG 7/41 RF-litz wire. The turns are shielded to suppress eventually disturbing…
The magnetic, handheld coil FESP 5133 was designed to generate defined magnetic field strength in the audio frequency range up to 3 MHz. The main application is immunity testing against magnetic fields according to VG 95377 Part 13 and many others. Depending on the current source characteristics magnetic fields up to 400 A/m can be generated for a short time.
The handheld coil FESP 5133-1330 was designed for immunity testing against magnetic fields up to approx. 20 kHz. The coil has 225 turns of Cu-wire on 15 layers. There are spacers to provide a constant distance of 50 mm between coil center and EuT-surface. The generated magnetic fieldstrength is direct proportional to the coil current. Typical applications are Immunity Tests according to the Measuring Method SF 01 G acc. to VG 95377 standard.
The magnetic, handheld coil FESP 5132 was designed to generate defined magnetic fieldstrength in the audio frequency range up to 100 kHz. The main application is immunity testing against magnetic fields according to EN 55103 and MIL-STD-461 G. Depending on the current source characteristics magnetic fields up to 1500 A/m can be generated for a short time.