1. Meter Accuracy DC Volts ±(0.1% of the reading + 1 digit) DC Amps
Resistance
±(0.2% of the reading + 1 digit)

2. What does this +1 digit mean ?
Display
Range
200mV
00.0 2V
0.000
20V
0.00
200V
Lets say, in a circuit, we are reading a volts using the 2V range setting
The accuracy is ±(0.1% of the reading + 1 digit)
But the meter can only display 3 digits
beyond the decimal point (2V range)
So the accuracy is ± V
Therefore actual reading accuracy is ± V
0.813 V
0.811 V
For this measurement the value is [0.812 ± 0.001] V

3. How to set-up Power Supply
Flick this
Switch to
measure
voltage
Flick this
Switch to
measure
current
Single Supply (source)
This LED lights-up
This LED lights-up
Make sure
this switch
is off
Rotate the voltage knob
clockwise and set the desired
voltage
Turn on
the switch
Connect wires to
terminals and short
the free end
Rotate the current knob
clockwise and set the desired
max current
Rotate the voltage knob
slightly clock wise
Rotate these two knobs
Anticlockwise one turn
Remove this short

4. both the supplies to have
How to set-up Power Supply
Dual Supply
Set current limit for both sides as described before.
Set this switch for
tracking when you want
both the supplies to have
equal magnitide +
Gnd -

5. A Sample Experiment
Design I
What is the
Value of I
470 Ohm
0.5V
Theoretical Value
0.5V
= mA
470 Ohm

6. First Level Experiment/Calculation
Measure the resistance using an Ohm-Meter
2K Ohm Range, therefore the value is ± KOhms
Max value = 471 Ohms, Min value = 469 Ohms

7. First Level Experiment/Calculation…… continued
Measure the voltage of the supply
2V Range, therefore the value is ± V
Max value = V, Min value = V

8. Measure Current
2mA Range, therefore the value is ± mA
Max value = 0.88 mA, Min value = mA
Our theoretical value is = mA
Something weird
going on here !

9. Internal Resistance of the Meter (Shunt)
2mA
100 Ohm
20mA
10 Ohm
200mA
1 Ohm
Real Circuit
0.500 ± V
0.470 ± K Ohms
100 Ohm
(meter shunt)

10. Reconcile measurement results with expected values
Voltage Measurement:
Max value = V, Min value = V
Resistance Measurement:
(Max value = 471 Ohms, Min value = 469 Ohms)
Plus 100 Ohms
Calculated Current:
We have excellent reconciliation when the calculated
And measured values match well within the meter’s accuracy
Measured Current
0.501 V
569 Ohms
Max value =
= mA
Max value = mA
0.499 V
571 Ohms
Min value =
= mA
Min value = mA