JVC TK-WD31 Instructions Manual page 23

Power supply (DC 12 V or AC 24 V)
Connect the DC 12 V or the AC 24 V power supply to the DC 12V/
AC 24V terminals. To prevent connection errors or a cable discon-
nection, we recommend the use of lug plates for the connections.
The following table shows the connection distances and connection
cables provided that 2-conductor VVF cables (vinyl-insulated vinyl
sheath cables) are used.
Maximum extension
(reference)
Conductor diameter
Memo
If thin cables are used (i.e. with a high resistance), a significant
voltage drop will occur when the unit is at its maximum power
consumption. Either use a thick cable to restrict the voltage drop
at the camera side to below 10%, or place the power supply
near to the camera. If voltage drop occurs during operation, the
performance will be unstable.
Attach the cable conductors so that they do not come into con-
tact with the drop prevention wires.
Do not allow input from both a DC 12 V and AC 24 V power
supply at the same time.
When using a DC 12 V power supply, ensure that the polarities
of the cable are correct.
The AC 24 V power supply should conform to the following:
U type: Class 2 only
E type: Isolated power supply only
100 m 260 m
1.0φmm 1.6φmm 2.0φmm 2.6φmm
and more and more and more and more
410 m 500 m
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