User Manual

Application examples
Figure 5 3: Custom Limits
To set custom limits, either right-click the desired measurement parameter or
click th
e Limits Setup icon on the menu bar. Stop the measurement update to
set u p custom limits.
Custom
limits will appear as a separate tab on the measurement grid. The
result column will display red fonts if the limits are failing. Hovering over the
results will display the limit function, limit value, and relative value.
Example 4: Standby power measurements (IEC 62301 Ed. 2.0)
Power supplies, adapters and common e lectrical and electronic goods often
operate in standby mode. Examples are a TV switched off by a remote control
but consuming power while waiting for further remote control, a microwave oven
displaying its clock, or a cell phone charger that has finished charging.
The cumulative power drawn by these and other common loads is significant and
programs such as ENERGY STAR
®
and the European Eco-Directives seek to
li
mit the power drawn by equipment when in standby mode. The typical standby
power levels continue to decrease from the 1 Watt initiative of 2010 towards the
level VI efficiency standards of 2016.
Measurement challenges
The standby power and the measured current are low compared to the normal
operating point of the DUT. The PA3000 should accurately measure currents as
low as 100 μA, along with the full-load current. The PA3000 offers low current
measurement ranges and very low noise to accurately measure the standby current
and power.
PA3000 Power Analyzer User Manual 127