American Dynamics ADC770 - Manual (Page 15)

E-15
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
disconnection, 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.
Connections on the back
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 contact 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:
Class 2 only
Ⅲ Power supply
DC12V AC
24V
1 2
REMOTE
AUX GND
CLASS 2 ONLY(U TYPE)
ISOLATED POWER ONLY
(E TYPE)
SEE INST-
RUCTION
MANUAL
Y/C OUT
VIDEO OUT SYNC IN
POWER
Maximum extension
(reference)
Conductor
diameter
328 feet 853 feet 1345 feet 1640 feet
(100 m) (260 m) (410 m) (500 m)
18AWG 14AWG 12AWG 9AWG
(1.0 mm) (1.6 mm) (2.0 mm) (2.6 mm)
e02_adc770(06_22)e.p65 5/10/04, 10:41 AM 15