Hi,
I have purchased a Ranger and I can't wait for it to arrive, and to start working with it. It seems like a great product!
However, I have a couple of questions and topics I'd like to understand, to see if I understand the operation of the device:
1) Is there a maximum voltage for the DUT (i.e. SOURCE & LOAD terminals)?
- I would like to test a Product that is powered from 8.4V (two Li-Po bat-cells in series)
2) It seems that all the Transistors in the analog part are p-channel - is that true?
3) I believe I do understand the power and sensing current paths of all the currents ranges (nA, uA, mA), but and I don't understand the NMA signal (Not mili-Amp??). It seems that 'D38_ATN_MA can control all the transistors, correct? Is 'NMA' an input to the micro-controller?
4) Is there a reason to use split (two resistors) in the amplifiers' gain resistors? i.e. 6.8K+2.2K instead of the a simple 9K 0.05% resistor?
Thanks in advance!
Chagai