Connevans FSM2 User Instructions

Connevans Loop Field Strength Meter
The FSM2 Loop Field Strength Meter from Connevans
is a digital meter and audio monitor for testing Audio
Frequency Induction Loop Systems (AFILS).
This meter is designed for both professional and
non-professional users and provides a quick and
accurate method of monitoring and setting the
performance of loop systems.
A suite of free audio test signals is available for free download from
www.connevans.info/page/loop_field_meter. These may be used on any
convenient device such as tablets, mobile phones, music players and laptops.
Before you start
There are a few initial settings to consider before you begin taking measurements
with the Connevans Loop Field Strength Meter. The FSM2 covers a wide dynamic
range of magnetic field strength from -44 to 8dB re 400mA/m in two ranges along
with A weighted and flat frequency responses, true RMS and PPM (Peak Programme
Meter) display time responses.
1. Firstly, decide whether you prefer to use the PPM (Peak Program Meter)
or RMS mode of display
2. Secondly, whether you wish to use the PH (Peak Hold) function.
RMS mode is specified in EN IEC 60118-4. However, PPM mode is widely considered to
be advantageous for moving signals such as speech and music etc. and is
recommended over RMS mode in EN IEC 60118-4, EN 62489-1, IEC TR 63079, all
previous publications of BS7594 and is used for all broadcast monitoring.
Note : for continuous sinewave signals, both modes give the same display readings.
The PH function maintains the highest instantaneous
reading on the display for 3 seconds before decaying
slowly. (The peak hold value may be cancelled by a
short touch of the power button).
Select the preferred operating modes using the slide
switches in the battery compartment.
The factory settings are RMS mode with Peak Hold off.
Connevans Loop Field Strength Meter Instructions
User Instructions
Version 1.0
PH ON PH OFF
PPM RMS
1