Multimeter and oscilloscope car diagnosis - KKM828 review
Checking out what can be diagnosed in car using a multimeter, and reviewing at the same time KKmoon KKM828 graphical #multimeter with oscilloscope. Starting with simple measurements like car battery voltage, voltage drop at crank, voltage peak with engine running, then checking glow plug resistance, watching up close N75 vacuum valve power signal and footwell LED PWM control signal, checking current consumption by the 12V power outlet, and looking for ground connection for 3rd party accessories hardwiring.
👍 In my opinion it's a great device for testing and diagnostic various things around a #car. I've used it when I was retrofitting rear warning lights in VW Golf MK7 and it was a huge help. I'm not a professional mechanic, diagnostician, electrician, or electronic, but I find KM828 extremely useful. It will find a place in my toolbox.
⬆️ Pros
#Oscilloscope function and graphical data display
Small form factor (for something with oscilloscope)
Readout database with 100 inputs memory
Auto range for measurements
Automatic sleep function to preserve battery
Safety reminder (sound + graphical) when working on high voltage
⬇️ Cons
Would prefer a device with USB battery charing option rather than 3xAA battery setup.
🛠 KKmoon KKM828 Tech Specs
2.4'' Display with backlight and 320 by 240 resolution
Input resistance: 10MΩ
Powered by 3xAA battery, consumption ~80mA (about 5 hours)
Bandwidth: ACV/1MHz ACA/5KHz
Max. real-time sampling rate of 2.5Msps
Automatic and manual range settings
Storage for 100 data/10 waveforms
Oscilloscope bottom display: VP-P, average value, effective value, frequency, time base, amplitude
Diode test voltage ~ 5V, test current ~1.5mA
Continuity test judgment resistance ~50Ω beep
Fuses 500mA@250V and 10A@250V
🛒 Buy KKmoon KKM828 multimeter here: https://www.tomtop.com/p-e12592.html?...
0:00 KKM828 multimeter
1:35 Voltage
3:03 Minimum/Maximum voltage
4:27 N75 valve control signal
6:40 Frequency/duty-cycle of PWM signal
7:52 Glow plug resistance
9:32 Circuit continuity
10:42 Amps consumption
12:27 Readout database
13:18 Pros and cons
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