MagTest System

Overview MagTest System combinations for immunity testing
MagTest System Description
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.

SW 9605 - Current Clamp was designed to measure RF-currents.

SW 9605 – Current Clamp

Insertion Loss in 50 Ω System: 34 dB

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.

SHUNT 9571 - Measuring Resistor

SHUNT 9571 – Measuring Resistor

Frequency range (nominal): DC – 250 kHz

High power shunt resistor with low inductance. Frequency Range: DC – 250 kHz Resistance values and max. continuous power rating: 2 x 500 mΩ / 400 W; 1 x 1 Ω / 800 W; 1 x 250 mΩ / 800 W; Weight : 13.5 kg Dimensions (W/H/D) : 447 mm x 144 mm x 470 mm Power supply fans : 110/230 VAC 50/60 Hz Datasheet SHUNT 9571

HHS 5206 – Circular Helmholtz Coils

HHS 5206-4 – Circular Helmholtz Coils

  • Number of turns: 4
  • Frequency Range: DC - 1.5 MHz
  • Coil Shape: Circular
  • Nominal Coil Current (continuous): 34 A
  • Maximum Coil Current (5 min.): 55 A
  • Magnetic Field Strength Nominal (continuos): 330 A/m
  • Magnetic Field Strength Maximum (5 min.): 530 A/m
  • Magnetic field strength at 1 A Coil Current: 9.64 A/m; 139.68 dBµA/m
  • Diameter/Side: 0.584 m
  • Resonance Frequency (pair of coils): 3000 kHz
HHS 5206 – Circular Helmholtz Coils

HHS 5206-132 – Circular Helmholtz Coil

  • Number of turns: 132
  • Frequency Range: DC - 30 kHz
  • Coil Shape: Circular
  • Nominal Coil Current (continuous): 10 A
  • Maximum Coil Current (5 min.): 15 A
  • Magnetic Field Strength Nominal (continuos): 3142 A/m
  • Magnetic Field Strength Maximum (5 min.): 4713 A/m
  • Magnetic field strength at 1 A Coil Current: 314.2 A/m; 169.97 dBµA/m
  • Diameter/Side: 0.6 m
  • Resonance Frequency (pair of coils): 50 kHz
HHS 5206 – Circular Helmholtz Coils

HHS 5206-16 – Circular Helmholtz Coils

  • Number of turns: 16
  • Frequency Range: DC - 500 kHz
  • Coil Shape: Circular
  • Nominal Coil Current (continuous): 33 A
  • Maximum Coil Current (5 min.): 55 A
  • Magnetic Field Strength Nominal (continuos): 1260 A/m
  • Magnetic Field Strength Maximum (5 min.): 2100 A/m
  • Magnetic field strength at 1 A Coil Current: 38.17 A/m; 151.63 dBµA/m
  • Diameter/Side: 0.6 m
  • Resonance Frequency (pair of coils): 700 kHz
HHS 5204-36

HHS 5204-12 – Circular Helmholtz Coils

  • Number of turns: 12
  • Frequency Range: DC - 500 kHz
  • Coil Shape: Circular
  • Nominal Coil Current (continuous): 30 A
  • Maximum Coil Current (5 min.): 60 A
  • Magnetic Field Strength Nominal (continuos): 1288 A/m
  • Magnetic Field Strength Maximum (5 min.): 2500 A/m
  • Magnetic field strength at 1 A Coil Current: 42.93 A/m; 152.66 dBµA/m
  • Diameter/Side: 0.4 m
  • Resonance Frequency (pair of coils): 1400 kHz