I need to test how software responds to an alarm condition. So I need to cause (
ID: 2083968 • Letter: I
Question
I need to test how software responds to an alarm condition. So I need to cause (inject) a drive fault on connector P12.
What connector pin do I use for the signal? What connector pin for ground?
What type of signal would I use (digital, analog, totem pole, open collector, etc.)?
What voltage would I use?
If I used a function generator and a square wave, what components would limit my maximum frequency and/or duty cycle?
V Chan 11 CH12 ENB +3.3V R75 2.2K P12 V Chan 12 AGND R86 CH12 DRV FLT 10K C327 0.022 uF need to test how software responds to an alarm condition. So l need to cause (inject) a drive fault on connector P12. what connector pin do I use for signal? What connector pin for ground? What type of signal would l use (digital, analog, totem pole, open collector, etc.)? What voltages would l use? If I used a function generator and a square wave, what components would limit my maximum frequency and/or duty cycle?Explanation / Answer
Solution:
A) Connect input signal between pin 1 and pin 3, make sure one pin at the positive signal and other to the signal ground.
B) Analog signal can be used as an input signal which compares the signal input with +3.3 V supply and it divides voltage signal between resistor and capacitor at the output divider and turns LED (Alarm) on according to the supply voltage that charges the capacitor.
C) The voltage greater than 3.3 V is used as an input signal so that the difference of these voltages used to charge the capacitor.
D) The output divider circuitry limits the frequency and delay of this design.
the RC delay is = R86 x C327