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Rs485 Termination

J_G
in CCTV & Access Control

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Say you have a line of PTZs... And I do not terminate the rs485 with the termination switch, will the telemetry not work? As this is all i can think of what I haven't done on site... Telemetry isn't working... Cameras addressed correctly etc

Doubtful but possible especially if long runs

The opinions I express are mine and are usually correct!

(Except when I'm wrong)(which I'm not)

The majority of RS 485 does require a balanced line / resistors at each end. Some manufacturers deal with it themselves through their kit and some require installer to fit.

What kit are you using?.
  • Author

Dedicated micros 2050 PTZs x2 wired from the dvr to cam02 then to cam01.... Cam01 being EOL

what dvr?

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what protocol did you select and did you reboot the dvr?

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  • Author

Dennard and yes I'm back on site tommorow so any suggestions would be great

The data line run to the cameras, (cant be run as star), same grade of cable? :hmm: Mmm..

Both same baud rate? and DVR?
  • Author

It is daisy chained, but it does go to cam address 02 first, does this matter? And it is cat 5 twisted pair... Also the baud rate I will be checking as i havent been into the settings on the camera direct

Edited by J_G

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