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ChrisB

PTZ communication help

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Hi Guys, first time to this forum. Could anyone help me to have my JE900BN PTZ dome communicate with my PC DVR system!! My software is the Shenzhen Wave-P and Ether 10104 DVR card.

The dome suports several protocols. I have set up the dome to have the same as the PC,I think, but nothing!!! I've done what it says in the manual but nothing happens. The camera works through the card but no movement. Does anyone have any Ideas please.

Chris B

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How do you have the camera connected? What serial communication protocol are you using (RS-232/422/485)? What command protocol are you using (Pelco P/D/etc.)?

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Sorry nipped away from PC. I have a RS232-RS485 converter 2 wires to dome

Pelco-D

2400 Baud

Address 4 because set up on number 4 camera on DVR

Also checked Com on PC and made sure its running 2400 as well.

 

Is there something I have forgoten??

 

Chris B

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Polarity of the wiring is correct, I assume? Same address set on both camera and DVR? Sure the proper serial port is selected? If it's one of the PC's onboard ports, is it enabled in the BIOS?

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Hi there,

yes polarity of the two wires from dome to converter are correct. I have used a nul lead from my PC so I know that there is communication. I'm just loosing the will to live now as I run out of ideas!!

Any more ideas I can try?

 

Chris B

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Might be a silly question, but are you sure the dome works properly? I don't suppose you have a joystick controller or something to test it with? Have you tried another protocol, like Pelco P? Ummm.... what else?

 

Hmmm... have you tried foregoing the 232/485 converter and just wired a straight RS-232 connection to the dome? Get a female DB-9 connector (or hack the end off a serial cable), and connect pin 5 to ground and pin 3 (TX on the sending end) to the RX connector at the camera.

 

Oh yeah, and that's the other thing... you probably already know this, but it's one of those silly little things that we sometimes just don't think of: you don't connect TX-to-TX, you have to connect the TX at the DVR to the RX on the camera (even I've done it a couple times, just working in brain-fart mode and not really thinking about it).

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