Lab Test Equipments

Multimeter

A Multimeter is basically a Paramter measuring tool, which can measure a wide range of parameters, Principally : Voltage (AC/DC), Resistance, Capacitance, Conductivity etc.

Its the most common diagnostic tool technicians have, through multimeter debugging comes handy.

I used Multimeter to check the continuity of the tracks and make sure everything is connected according to the Board Layout

Power Supply

In our lab we have Scientific PSD3005 0-30V 5 Amps Power supply.

Features :
DC 0 to 30V, 5A
Constant voltage & constant current operation
Digital displays for voltage ¤t
Adjustable current limiter
Protection against overload & short circuit

I used this power supply to power up my board via Vcc=5v and GND.

Digital Oscilloscope

While working with electronics, for debugging and testing behavior, we need to understand the circuits on signal level, which multimeters fails to do...... In this case Oscilloscopes come in picture. A digital oscilloscope measures the signal, and then converts that measurement into a digital format using an ADC converter, after which the data measured is depicted as a digital waveform representation. From this representation various paramters can be evaluated.

In our lab we have Keysight DSO1052B which has the following capablities.

> Bandwidth = 50 MHz

> Channels = 2

> Max Memory Depth = 16 kpts

> Max Sample Rate = 1 GSa/s

> Display Size = 5.7 inch

> ADC Bits = 8 bits

> USB storage, RS232C and J45 interface

> Multi-waveforms math, FFT Function

> Built-in delay sweep function

> Waveform Record and Recall, Trigger Mode for Edge, Video, Pulse Width, Slope and Alternate

I tested the clock frequecy of my board

Also I tested the same for FABISP

Observation

The Oscillator which was soldered on the board was 16Mhz, But the DSO was measuring 13-14Mhz (In case of RaKit), I dont know why it was happening, May be because of temperature or voltage.

The Oscillator which was soldered on FABISP was 20Mhz, and the observed reading was about 19.98Mhz, that seems perfect.