Bench power

[rwarre]

I have a 13 volt 3 amp power supply. Is that sufficient to run the g3x on the bench prior to hooking anything else to it?

 

[tass]

I don't use Garmin, but their installation manual lists power requirements for all the components in table 2-2.

https://static.garmin.com/pumac/190-01115-01_au.pdf

So, you should be able to calculate from there. The GDU46X draws 2 amps alone, I'd be wary of how long long a 3A supply can keep up with supplying 2A.

 

[Walt]

Better off just using a battery than a cheap noisy switching PS.

 

[N804RV]

I have occasionally power up avionics on the bench to update firmware or just to do a quick bench check. The power supply that I use is specifically made for Ham radio enthusiast and electronics repair benches. Its not terribly expensive. But, it does cost a bit more than those cheap power supplies sold on Amazon.

But, if you've arleady got a 12 vdc deep cycle battery sitting on the shelf, why spend more money on something you're only gonna use a few times?

 

[RViator60]

I have a 13 volt 3 amp power supply. Is that sufficient to run the g3x on the bench prior to hooking anything else to it?

Personally, I would be very cautious about supplying any power to the G3X if if hasn't been properly configured so not to damage it and void the warranty. I purchase my avionics from SteinAir and I know they bench tested the system with all LRUs connected with their harnesses before shipment.

 

[JonJay]

Regardless of what you use, make sure it is fused to the wire size feeding the device being tested. If that’s a bare battery, it is especially important or you could turn the wire into a very impressive, and fiery, fusible link.