Mindray DP-9900Plus - Page 103

Electrical Safety Inspection
A-6
ELECTRICAL SAFETY INSPECTION
4- Protective Earth Resistance
3) Pressshortcutkey3.TheProtectiveEarthResistancetestisdisplayed.
4) Press SOFT KEY 3 to select a test current (1AMP, 10AMP, or 25AMP). The selected test
currentisdisplayedintheupperrightcornerofthedisplay.

5) Press START TEST to start the test. The test currentis applied while resistance and current
readingsaretaken.Thistak esapproximately5seconds.
6) Presstheprintdatakeyatanytimetogenerateaprintoutofthelatestmeasurement(s).
 Note
When"Over"isdisplayedforOhms,thissignifiesthatavalidmeasurementwasnot
obtainedbecauseeitheranopenconnectionwasdetectedorthatthemeasurementwasnot
withinrange.Readingsgreaterthan9.999OhmswillbedisplayedasOver.
 Failure
Onceitreachesthelimitation,stopusingandinformtheCustomer ServiceEngineerforanalysis
anddisposal.
LIMITS
ALLCOUNTRIESR=0.2ΩMaximum