Ok, I'm trying to get an idea of how much run-time I'll get with my new Tascam HD-P2. I'm using an external 12 V battery, with 4.2 AH.
The manual states the following specs:
Rash Current = 600 mA
Power Consumption = 6 W
ok, now, if we believe the total power consumption of 6W, at 12 V this equates to a current draw 500 mA, not 600mA.
So, what is "rash current" anyway? what are they talking about?
In either case, I think I'm being quite conservative if I use 600mA in my calcs, because I'm running S/PDIF into the HD-P2 (i.e. I'm not using phantom power, I'm not using the internal pre-amps, and I'm not using the internal A/D converter). so overall, I think the actual current that I'd be using is a good deal less than the stated specs. how much less, I don't know. which is why I'll use 600mA in my calcs, unless someone can tell me what "rash current" actually means.
assuming 600mA of current, in theory, I'd get 7 hours with my 4.2 AH battery. I ran it for 5 hours last night, while transferring DATs, with no problems from the battery at all. so I'm not too worried about it. but still, I'd like to know what they mean when they say "rash current".
thanks for any help,
Jason