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2.1

Box installation

Choose a plain surface to prevent the box from being twisted and thereby becoming leaky while
mounted. When mounted out-door the box should be oriented with the cable glands pointing
downwards.
Screws and wall plugs are supplied in the mounting kit. Drilling dimensions are shown on the
figures at the end of this manual.

2.2

Mains installation

The BVT-225, BVR-225 and the BVX-225 can be supplied with either 115 VAC or 230 VAC mains
voltage. The mains voltage is selected by the mains voltage change-over switch, refer to the
figures. The connection of the mains cable is also shown on the figures.
Terminals marked with hazardous live symbol requires installation by an instructed person.
The BVT/R/X-225 must be used with a 3-wire mains connection (2W+PE @ min. 0,75mm2).
Details on the mains supply can also be found on a label fitted inside the lid of the BVT/R/X-225.
Terminals marked with hazardous live symbol requires installation by an instructed person.
If permanently connected to mains, a readily accessible disconnect device shall be incorporated in
the building installation wiring.
If pluggable connection to mains, the socket-outlet shall be installed near the equipment and shall
be easily accessible .
In order to fulfil the safety standard (IEC 60950), the mains cable must be routed via the provided
cable clip inside the Series 225 box. Figure below shows how the mains cable should be routed.

Warning:

 Before connecting the unit to the mains outlet make sure that the mains voltage

change-over switch is set for correct mains voltage in order to avoid damage on the equipment.

Warning:

 Make sure the equipment is earthed; otherwise the over voltage protection will not

work!

 

Although both the transmitter and the receiver are earthed no ground loop problems will

occur due to the galvanic separation of the video signal introduced in the transmitter.

2.3

Video cable connections

Connect the cables exactly as shown on the figure. The unbalanced outputs on all three units can
be used simultaneously.

Note:

 If any of the unbalanced outputs are unused make sure to leave the factory fitted

termination load in position for optimum performance.

Warning

: At the transmitter end do not in any way connect the twisted pair shield. If the shield is

connected to the transmitter the galvanic separation will not work!
The shield should be connected at the receiver end only.

Twisted pair video equipment Series 225

2800-00054

Mains terminal block

Cable clip

Mains cable

Mains cable

Содержание 225 Stries

Страница 1: ...ables housed in an IP 65 rated ABS box Two unbalanced video outputs for 75 coaxial cables are available both outputs can be used simultaneously if the video needs to be supervised from two locations T...

Страница 2: ...ocket outlet shall be installed near the equipment and shall be easily accessible In order to fulfil the safety standard IEC 60950 the mains cable must be routed via the provided cable clip inside the...

Страница 3: ...the picture Cable impedance BVT 225 BVX 225 switch S1 Cable impedance BVR 225 BVX 225 jumper W1 Pos Description Position Description H 124 for 90 140 cables 124 pins 1 2 124 for 90 140 cables L 62 for...

Страница 4: ...ddle and high frequency Fine adjust Needs to be adjusted only at cable lengths beyond 1500 meters RV6 High frequency 4 th 3 4 1 Adjusting with cable lengths up to approx 1000 meters 1 Turn all adjustm...

Страница 5: ...mission distance and immunity towards noise and crosstalk Description Min Typ Max Unit Solid conductors diameter 0 5 0 6 0 8 1 mm Characteristic impedance 1 MHz 90 124 140 Capacitance 90 nF km Capacit...

Страница 6: ...MARK TELEPHONE 45 44 50 33 00 TELEFAX 45 44 50 33 33 HOMEPAGE http www ernitec dk E MAIL ernitec ernitec dk UK OFFICE ERNITEC UK GERRARD HOUSE WORTHING ROAD EAST PRESTON WEST SUSSEX BN16 1AW ENGLAND T...

Страница 7: ...0 dB 5MHz Unbalanced video output X2 X3 Voltage adjustable 0 7 1 1 5 Vpp Unbalanced 75 Frequency response 20 15 M Hz 1 5 dB Signal noise ratio 56 dB Unweighted CMMR 60 dB 20 Hz 10 MHz BVT 225 BVR 225...

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