Rion NL-42A, Instruction Manual, Page: 137 / 154

119
Optional Accessories
Microphone extension cables (EC-04 series)
For enhanced measurement accuracy, the microphone can be detached from
the unit and connected via an extension cable. This will reduce measurement
deviations due to refraction effects of the unit or the acoustic infl uence of
the operator.
Six different cable types with lengths from 2 to 100 meters are available, as
listed in the table below. It is also possible to combine multiple cables.
Important
With long extension cables, the cable capaci-
tance restricts the upper measurement frequency
and measurement level. For details, refer to the
Technical Notes.
Type Length Type Length
EC-04 2 m EC-04C 30 m (reel) + 5 m (connection cable)
EC-04A 5 m EC-04D 50 m (reel) + 5 m (connection cable)
EC-04B 10 m EC-04E 100 m (reel) + 5 m (connection cable)