Help with audio on AVTECH's AVC760

[Wodger 0]

Good day,

 

I am in a bit of a bind, and I'm hoping someone might be able to help me.

 

I own 2 AVC760's fitted to each of of my stores, and have had relatively no problems with them. I run non-audio cameras, and following a recent incident in one of the stores, I decided to use the single channel audio input to record the audio onto one channel.

I visited a CCTV store and they recommended either a camera with audio or a separate standalone microphone with power supply - I ended up going with the microphone which I have installed on the ceilings.

One thing I found odd, was the connection for the GRND on the RCA connector is connected to the power supply GRND for this microphone has only 3 lines coming out.

 

Anyway, problem is, the DVR doesn't detect the signal (the audio icon along the top bar remains grey with a cross on). I tested the microphone by connecting to my laptop pc - and although a little quiet, picks up sound with no problems.

If I connect the RCA to the DVR, and then another RCA to the Audio out to a TV, it also picks up nothing.

Both units do the same - according to the manual, the audio is detected on startup, and that to connect the camera with audio to channel 1 first. I have done this repeatedly and am now at a loss.

 

Could the microphone not be providing enough power for the DVR to pick up?

Anyone had any experience with connecting a microphone up to the AVC760?

Is there something I need to do inside the unit?

 

Regards,

 

Pete

[cctvindo 0]

see in front of panel there is a word audio.u must pust 2 button to activate it.

[Wodger 0]

see in front of panel there is a word audio.u must pust 2 button to activate it.

 

So by your explanation, I push both buttons at the same time to activate the audio recording - is that correct?

 

Pete

[Wodger 0]

Thanks ever so much! - I was at the end of my tether regarding this - audio working great without any problems

 

Pete