Ya i have three omani antenna at 1 feet to each other in a triangle and my power adapter is 24 volts onlyCheckout the volts of ur power adapter. 433ah should be powered with 24volts.
there can be surge which ur APC UPS is not handling. R U sure u have 3 omni antenna. mounted so close.
Change them with 3 sectors. 120 degree each.
I am using RB433AH with three Wireless (Atheros AR5413) cardsCheck the power output (watts) of your power supply. If you can't find that then tell us the amps.
Power is much more important than volts when using multiple radio cards.
To use the water analogy: volts is like water pressure, amps is like hose diameter, watts is like gallons (or liters) per minute. If you are trying to put out a fire, gallons per minute is much more important than water pressure. The water pressure along with hose diameter allow you to figure out gallons per minute.
Also, what model radio cards are you using?
Tom
To use the water analogy: volts is like water pressure, amps is like hose diameter, watts is like gallons (or liters) per minute. If you are trying to put out a fire, gallons per minute is much more important than water pressure. The water pressure along with hose diameter allow you to figure out gallons per minute.
I normis do you have any suggestion why my RB433AH is restating very 10 to 20 minutes...very cool analogy
To use the water analogy: volts is like water pressure, amps is like hose diameter, watts is like gallons (or liters) per minute. If you are trying to put out a fire, gallons per minute is much more important than water pressure. The water pressure along with hose diameter allow you to figure out gallons per minute.
Ya i know that when i check the voltage it shows 16 to 18 volts...Are you aware the RB433AH has a built-in voltmeter?
/system health print
What will be power supply requirements...Is there any entries in the log after the reboot? If it is a 24v power supply, and the output is only 16v, it could be shutting down due to overheating. What is the current rating on the power supply?
in my case power to Router is through PoE injector and cat cable is around 25 meters and the error same as your...There is a problem somewhere. None of those are around 16 volts. Don't use any of the 48 volt units on that board. Are these regulated supplies? How long is the run from the power supply to the router?
Did you look at the log for any entries after the reboot? Do you see an entry like this?
18:00:12 system,error,critical router rebooted without proper shutdown, probably power outage
ADD: With your setup, I would use at least 12 watt power supply. That is 12v@1A or 24v@.5A. Your should provide plenty if they are working ok. And if PoE, NO POWER OVER DATA LINES!
I got it when i purchase the router from the vender in indiaWhat make/model of PoE injector are you using? It doesn't send any power over the data lines, does it?
The power supplies don't have a minimum current, do they? Some of my switching power supplies require a current draw of 10% to 20% of the rating to properly regulate the voltage.
Dear friend at presently i am not near to power supply i am at remote place our tower construction is going on... i will mention you all details within few hours...The vendor is one thing. The manufacturer is what I wanted. I am not perfect, and I do stupid things now and then. Your vendor may not be perfect either. Maybe he gave you the incorrect PoE injector. Just checking.
can i check it with multimeter the output of the adapter and its amp amp meter i have digital multimeter today i check it and i will post the same for your reference....I see your edit. That voltage is too high (12v ps) or too low (24v ps) for any of the power supplies you listed with the line length you have.
My adapter is 24 volts 1 Amps and it is on PoE with 25 meter cable and showing 16 volts.The ideal voltage and amps should be 24 volts and 1 amp or 2 amps. Why go for 10 amps or 25 amps they can power up 10 numbers of 433ah. check if your routerboard is properly grounded. Why need a 275KVA data centre UPS for a small device like 433AH. i have powered mine with a 600 VA UPS and adapter is 24 volts 2 amps. Works absolutely fine.
I have checked with multimeter also its shows 24.7 voltsI have been trying to tell u that although ur adapter shows 24Volts (it is marked 24 volts) but actually it is 18 Volts. It happens many times with Mikrotik vendors in India. check the voltage u r getting with a multimeter before u insert in the POE. I am sure it is not 24 volts.
When i activate my one card out of three its showing 16 to 18 volts and when i activate all cards three still showing same volts 16 to 18 volts in system-health.There should be power on only two of the CAT5 lines. Two ground, two power and the data lines.
Here are all the different types of PoE units with the pinouts:
http://www.allpinouts.org/index.php/Pow ... _%28PoE%29
You want the type that uses only spare pairs, not data pairs.
ADD: Check both end connectors on the CAT5 carefully. Maybe one or more wires are not making contact in the connector, or connected to the wrong pin. The voltage drop you show is consistent with a power line or ground line not connected properly.
Here is the mathematics: If you have a voltage drop of 8 volts in a quiescent state, when those radios start to transmit, the power requirement will at least double. That translates mathematically to another 8 volt drop. That is now a 16 volt drop when all radios transmit.
24 - 16 = 8
Minimum is 10v.
When i checked at cat ending at router side its showing 23.6 volts i checked with multimeterYou did verify when the router is operating:
1) the power supply is producing 24 volts at the power supply end of the CAT5.
2) the router end has only 16 volts.
Then you tell me. How do you get the 8 volt drop at about a half amp when it is idling, and don't expect the voltage to drop at twice the current when running full speed? There is resistance in the power line (CAT5) if all you told me is correct. It is Ohm's Law!
E = I * R
P = I * E
ADD: The only alternative I can see is if one of the power supply lines in the CAT5 is connected to the wrong pin, and the data line (or ground line) is dragging down the voltage. But that does not seem reasonable by the size of your power supplies. That would have burned out that input or the wire in no time at all.
Let me try this also but during router connected how can i check adapter jack is injected into PoE and other end is in touter sealed boxIs that 23.6v reading with the CAT5 connected to the router? If you have just the load of the multimeter on the CAT5, even with a resistive power connection, it will show almost 24v. But add a 6 watt load to a resistive power connection and you have a voltage drop!
Maybe I wasn't clear. You need to check the voltages on each end of the CAT5 while the router is connected and working!
ADD: By "resistive", I am talking just a few ohms here (less than 10) to cause this much drop. 24ga wire has a resistance of 3 ohms per 100'. If, for some reason, you have only one power and one ground wire connected, the circuit resistance would be about 6 ohms. Enough to cause that voltage drop.