Instruction manual

109
Technical Notes
Microphone Extension Cable (EC-04 series)
To reduce measurement deviations due to refraction effects and the acoustic influence of
the operator, the microphone/preamplifier assembly can be detached from the main unit
and connected via an extension cable.
Optional cables are listed in the table below.
1. Set the power switch to OFF.
2. Loosen the preamplifier fastening screw and separate the microphone/preamplifier
assembly from the main unit.
3. Connect the extension cable to the microphone/preamplifier assembly and to the
main unit.
Important
Never attempt to disassemble or separate the microphone
and preamplifier since this can lead to damage.
Important
With long extension cables, the cable capacitance restricts
the upper measurement frequency and measurement level.
For details, please refer to page 111.