Rion NL-21 - Bottom View

8
Controls and Functions
Cover
This cover protects the connectors on the bottom during transport or storage.
Removing the cover gives access to the connectors shown above.
External power supply jack
The optional AC adapter NC-98A, NC-34 series can be connected here for
powering the unit from an AC outlet.
Important
To prevent the risk of damage, do not use any AC
adapter other than the specified type.
AC/DC output jack
The signal selected on menu screen 3/5 is output here.
AC: AC signal (with frequency weighting)
DC: DC signal corresponding to sound level
I/O connector
This input/output connector serves for input of control signals and input/output
of measurement data. A printer, level recorder, or computer can be connected
here.
Bottom View
P O W E R
A C
D C
O U T
I
O
C o v e r
E x t e r n a l p o w e r s u p p l y j a c k
A C / D C o u t p u t j a c k
I / O c o n n e c t o r