Sony DCM-M1 Operating Instructions Manual page 124

Identifying the parts and controls
How to affix the ferrite cores
The camcorder is supplied with ferrite cores. Use them to cables as shown in the
diagrams below. You must affix the ferrite cores to comply with Part 15 of the FCC
Rules.
(1) Wind the cable round the ferrite core once.
(2) Fasten the catch.
Catch
Headphones and external microphone
Use the supplied small ferrite cores.
Audio connecting cable
Use the supplied large ferrite core. Connect the plug which the ferrite core is attached to
the camcorder.
Notes
•Attach the ferrite cores as close to the plug as possible.
•Use headphones with a cord diameter of less than 3/32 inch (2.5 mm) so that the cord
can be tied round the ferrite core.
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