Peak Atlas ESR70 User Manual

ESR60/ESR70 User Guide April 2012 – Rev 8
Page 8
Analysing Capacitors continued
In the event that ESR exceeds the maximum that can be measured, the display
may show:
The ESR measurement range is automatically determined during the analysis.
Typically, the resolution for ESR measurement is as shown in the table below:
ESR Value Automatically
selected test current
Nominal measured
resolution
0.00 Ω – 2.00 Ω 20mA 0.01 Ω
2.0 Ω – 20.0 Ω* 2mA 0.1 Ω
20.0 Ω – 40.0 Ω* 1mA 0.2 Ω
Although the measurement resolution is generally determined by the absolute
value of the ESR (as shown in the above table), low capacitance values can
result in a poorer ESR measurement resolution.
* The maximum ESR measurement is limited to 20Ω for the model ESR60
and 40Ω for the model ESR70.
If measuring capacitors connected in parallel, the ESR reading will
effectively be the value of all the ESRs in parallel, not just the ESR of the
capacitor in contact with the probes.
Cap =
Cap = Cap =
Cap = 476.6µF
476.6µF476.6µF
476.6µF
ESR = >20.0
ESR = >20.0 ESR = >20.0
ESR = >20.0
In
InIn
In-
--
-Circuit/Lea
Circuit/LeaCircuit/Lea
Circuit/Leaky
kyky
ky
ESR = >20.0
ESR = >20.0 ESR = >20.0
ESR = >20.0
or

Peak Atlas ESR70 Specifications

General

Brand	Peak
Model	Atlas ESR70
Category	Measuring Instruments
Language	English