Description - Magnet-physik FH 54 Operating Instructions Manual

Gauss- / Teslameter FH 54
contained in chapter Service. Additional details on FH 54 accessories and probes is provided in
Chapter Accessories.
We welcome your comments concerning this manual. Although every effort has been made to
keep it free from errors, some may occur. When reporting a specific problem, please describe it
briefly and include the appropriate paragraph, figure, table, and page number. The material in
this manual is subject to change without notice.

3.2 Description

The FH 54 is an extremely accurate full-featured gaussmeter. It covers a wide range of
magnetic fields and applications. The instrument provides the user with easy-to-use front panel
programming and incorporates a liquid crystal display. This alphanumeric format allows for
message-based front panel operation. Most operations can be performed and monitored through
the front panel keypad. Some rarely used functions can be accessed through a menu.
The FH 54 measures the magnetic flux density (induction) either in Tesla (T) or Gauss (G) or
the magnetic field strength in Ampere per Meter (A/m). Magnetic field ranges can be set
manually or with auto ranging. The instrument measures both DC (static) and AC (periodically
alternating) magnetic field values. In DC operation, the display shows the DC field at the probe
with the sign (orientation) followed by the appropriate field units. In AC operation, the display
shows RMS or Peak value for the field at the probe. The values are available over the Serial
Interface and also the Monitor Analog Output. This Analog Output allows the user to observe
the actual magnetic field waveform on an oscilloscope.
The Max./Min. function captures and displays the largest field magnitude seen since the last
Reset. The maximum value is shown in the second display line while the upper display line
contains the live field reading. Alternatively, also the largest and the smallest value can be
displayed. The Peak function allows in DC mode the peak value of a pulsed magnetic field to
be measured.
The relative function is intended to let the user see small variations in larger fields. The user
defined setpoint becomes the center or zero point of the relative reading and is shown on the
second line of the display. The difference from the setpoint or the relative reading appears in
the top display line.
In the following figure, the front side of the field strength meter FH 54 is shown. The plug on
the upper side is used for probe connection.
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