CMRR 3.0E | User Manual
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As the stray capacitance of patient cable affects the 100 pF capacitance value in CMRR 3.0E, Vc should be
tuned after detaching patient cable.
6.2.2.4
Test Parameter Setting
Choose [Manual] of [Automatic] test. If manual test is chosen and [Test Sequence] is opened, the right
window in figure 6-9 will appear after clicking [Run] button. According to test sequence of IEC-2-26
standard, [Electrode with Impedance] will automatically choose [None] for balanced test. The test time
will be automatically counted in second and shown at the upper right corner, with total test time shown
below it. After recording the test result, please click [Next]. The setting will be automatically switched to
[Electrode with Impedance RA] and the time at the upper right corner will be returned to zero and
counted in second again.
Figure 6-9, Software interface and run test windows of CMRR 3.0E Assistant
The display of [Test Sequence] is shown as the highlighted 1) step in figure 6-10, which indicates a
balanced test when setting [Electrode with Impedance: None]. As [Next] button being selected, [Test
Sequence] automatically highlights 1)~13) step by step. This explains the complete steps in IEC-2-26 test
(refer to 6.1.2.1 showing detailed steps for IEC80601-2-26: 2019 as the example).
