Care and Maintenance
4-34 Ultrasound System – Common Service Information
Direction 5444964-100 English
 Rev. 5
Isolated lead (sink) leakage test record  (continued)
Keep a record of the results with other hard copies of 
maintenance data using Table 4-14.
NOTE:  Not all test procedures are applicable to all areas of the world. 
Reversed Polarity testing content satisfies regions following IEC 
62353:2007 and IEC 60601-1:2005. 
NOTE:  Values in italics font are given as examples only. 
Table 4-14:  Typical data format for recording isolated patient lead (sink) leakage
Unit under test_________________________________ Date of test:___________
Test Conditions Patient Lead
System Power Grounding/PE RA+LA+LL
on closed
off closed
Table 4-15:  Typical data format for recording isolated patient lead (sink) leakage 
Unit under test____________________________________      Date of test:_____________
Test Conditions Patient Lead
System Power Grounding/PE Limit µA RA+LA+LL
off closed 50
on closed 50
off closed (reversed polarity) 50
on closed (reversed polarity) 50