Problem with Philips PM2811 & Fluke 45

[Mr. Robert]

Hello all,

I want to write a program to check the Philips PM2811 With Fluke 45.

My Problem is that :

1. I set the PM2811 Output Current by LV (3V, 300mA)

2.  I use the same LV to read the current by Fluke 45, but the output is 4.5mA.

After read current stage, the power supply go to nearest correct current.

How can I write the LV to sync. check and send current??

Thank you!!

i'm using LV7.1

[Dennis_Knutson]

I'm trying to understand what your problem is. You have some load connected to a power supply and you are measuring the current through the load. The power supply is set to output 5 volts and the max current you want to draw is 300mA. The current measured is 4.5 mA. What type of load do you have connected and what do you expect the current to be? The power supply can also be queried as to the actual current draw. Have you run that function in the driver and does that match what the DMM says? What do you mean by 'the power supply go to nearest correct current'?

[Mr. Robert]

i connect the Power Source (PM2811) directly to the DMM (Fluke 45)

Before reading the Current, the DMM Reading( 290mA)

At reading Time, it drop to 5mA

after reading it go to 290mA

[Dennis_Knutson]

Something must be changing with your three different DMM reads. Are you changing ranges between one read to the next? Are you changing functions? Are your three reads done in a loop where you are just calling the measure function?