CONNECTION/INSTALLATION

 

Installing the ferrite core

 

To retain electromagnetic compatibility, use the ferrite cores provided when connecting to

the lens.

 

Video-iris lens

 

(or galvanometnc-iris lens)

ALC

Av Pk

LEVEL

L H

VIDEO

 

DC

 

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: Isolated power supply only

Ferrite core

Wire clamp

Notes:

Install the ferrite cores within 50 mm of the camera-side connectors. (Fasten the ferrite

core with the wire clamp provided.)

Control signal cables

These cables should be connected only when it is required to control the camera using the RS-442A or RS-485 signals. The use of 0.65 4-conductor twisted pair cables is recom- mended. With these cables, the maximum ex- tension distance is 1,200 m.

Genlock connection

With some systems, when the external sync signal is a composite video or black burst sig- nal genlocking by applying an external sync input requires the horizontal phase (H PHASE) and colour phase (SC COARSE) to be adjusted.

Connections on the back  Power supply (DC 12 V or AC 24 V)

 

+

-

 

1

2

DC12V

AC24V

CLASS2 ONLY(U TYPE) ISOLATEDPOWER ONLY (E TYPE)

 

 

TX+ TX- RX+ RX- AUX GND

 

 

A B C D

 

 

Y/C OUT

 

SYNC IN

VIDEO OUT

 

 

SEE INST-

 

POWER

RUCTION

 

MANUAL

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.

 

 

Maximum extension

100 m

260 m

410 m

500 m

(reference)

 

 

 

 

Conductor

1.0mm

1.6mm

2.0mm

2.6mm

diameter

and more

and more

and more

and more

 

 

Connect to the other

MEMO

A

TX+

• Genlocking is not possible with a signal con-

B

TX-

side in pairs like this.

taining too much jitter, such as a VCR or

 

 

 

 

 

 

videodisc playback signal.

C

RX+

Connect to the other

D

RX-

side in pairs like this.

• For details, consult a JVC authorized dealer.

E-16

E-17

Page 9
Image 9
JVC TK-C1460B instruction manual Installing the ferrite core,  Control signal cables,  Genlock connection