Door video camera,any help please

[hennity 0]

Hallo,i am new to the cctv field.

 

i have been given a door entry board camera but it has a 4 pin connection.i have not come across this efore and ask in anyone familiar with these can help me wire it up ?

 

it has v+,v-,video+,video-

 

i`m ok with v+ and v- as they are the normal inputs at pins 1 and pin 2.

 

at pin 3 is video + and pin 4 is video -

 

i am not sure how to wire the connections.can i connect pin 3 video+ with pin 1 v+ ?

 

and the same with pin 2 v- and pin 4 video- ?

 

or can a person familiar with the wiring or door entry systems give an explanation please ?

 

i dont want to wire it wrong and end up causing electrical damage to it.

[the toss 0]

v- and video - are usually both "earths". One is your voltage earth & the other is your video signal earth

[hennity 0]

v- and video - are usually both "earths". One is your voltage earth & the other is your video signal earth

 

 

 

from how i understand this it means the v+ and v- from the power connector to pins 1 and 2 and the video+ (pin 3) and video-(pin 4) connected to the bnc ?

 

do i need to unite the earths ?

 

i am using this in a cctv dvr

[vector18 1]

Most of the new ones are just 2 wires from the door box to the base unit and than the base gets plugged

into an outlet. Do you have the make and model? It should have come with a schematic for wiring?

[hennity 0]

Most of the new ones are just 2 wires from the door box to the base unit and than the base gets plugged

into an outlet. Do you have the make and model? It should have come with a schematic for wiring?

 

 

it was from a system taken out before demolition of a building by a friend who knows i use cctv and have a pcb camera but its not the same.it just came with diagram of the 4 pin and what the assigned pin are 1 v+, 2v-, 3vid+, 4vid-. on my other pcb camera i just plug it in with 3 pin connectr and then to cctv lead.with 4 pins im not sure just dont want damage it