Instrument Control (GPIB, Serial, VISA, IVI)

cancel
Showing results for 
Search instead for 
Did you mean: 

5-volt output usb-8451 vs 8452

Solved!
Go to solution

I'm trying to clarify the specs for the 5-volt out on the usb-8452.  The 845x hardware/software manual says the module can only supply up to 20 mA.  Yet, the USB-8451 has a maximum of 230 mA. 

 

Is there a mistake in the 8452 manual or did NI cut the available current to 1/10 of the original SPI module? 

 

I ask because we have several 8451 in our testers using the +5v out with a draw of under 100 mA.  Future testers and replacements of the 8451 would mean adding another power supply to the system.

 

Just thought I'd better check.  Thanks!

0 Kudos
Message 1 of 2
(1,010 Views)
Solution
Accepted by topic author mysticfree

On pages 3-11 and 3-21 of this  manual, compare the "+5 V Power Source" indications for both modules.

The 20mA limitation of the USB-8452 is unfortunately not a mistake.

Message 2 of 2
(974 Views)