Connecting Uniphone ACO INS-UP720M: 2-Wire Digital Camera for PROEL HQ, Troubleshooting Tips

Hello,

I started replacing the intercom. After contacting the service provider, I learned that a two-wire digital camera was required for the PROEL company headquarters.

The choice fell on the ACO handset recommended by the service technician - ACO DIGITAL HEADSET INS-UP720M.

In my opinion, I connected the intercom well. Unfortunately, the device does not work - no signal, no ringing.

In the attachment I put the diagram - the jumper set to 2 - apartment No. 2.

Another jumper on the first two rungs - two-wire operation - J2 jumper in 2 wires position, terminal 1 shorted to GND line.

Picture attached.

Moderated By Tracer2:

We don't shout in the title! Fixed.

Voltage on the line checked and polarity of the wires determined?

best regards

The proel and uniphone exchange should be of the same manufacturer. But probably the visual aspect has won.

Terminal 1 is not factory-connected to the GND terminal. I can't see the bridge in the picture. (don't be beat if I'm wrong)

Check the voltage on the line.

Gentlemen, thanks for the reply.

In general, I chose ACO, because such intercom was recommended by phone to a serviceman in the block - he said that they assemble these headphones to PROEL and work well.

When it comes to voltage, I can't honestly read the measurement result:

- I set the alternating current when I put the red meter cable to the red wire - black to blue it shows the value: .009 - .010

- red to blue / black to red - value: .038 - .040

Generally, before I tried without alternation to connect - red instead of plus and vice versa, so it seems to me that the way of deduction is quite simple.

How does it look like ?

Measure the DC voltage. (= DC)

I give constant voltage:

- red to red - black to blue - 140.1
- red to blue, black to red - 20.0

What conclusions?

Place the receiver to your ear and press the door release button. You should hear "popping".

Take a measurement simulating the handset being hung up.

borell wrote:

I give constant voltage:

- red to red - black to blue - 140.1
- red to blue, black to red - 20.0

What conclusions?

SHOCK !!! if you give it in Volts - run away from this cable
Seriously, this is probably something you do not measure well, take a regular battery, e.g. 9V, and try to measure the voltage with it.

best regards

I have a 1.5V AAA battery on hand, voltage 1.528, so ok?

Such strange values come out in this cable and I do the measurement in the same way as with a battery. In a moment I will shoot a video and throw the link.

However, I suggest you ask a technician for help .....

It was not without the help of a service technician - I was cut off from the control panel - due to short circuits.

Thank you for your help!

borell wrote:

I was cut off from the headquarters

and on this line you had 140V ...

best regards