User's Manual

M2540-92000-01 A M2540 Ultrasound System Field Service Manual Page 95
Performance Tests: Electrical Safety Tests
Figure 6-3 ECG Lead Leakage Current Test Diagram
➤ ECG Lead Leakage Current Test Procedure
1. Set the analyzer to test ECG leads.
2. Plug the analyzer into an available AC wall outlet. Plug the ultrasound system power plug into
the test receptacle on the analyzer.
3. Power the ultrasound system by starting its internal PC.
4. Connect all ECG leads to the ultrasound system and to the appropriate jacks on the analyzer.
7ASW026
ECG
cable
AC microammeter
I
(current)
Ground wire:
Ground wire closed for Normal condition,
Neutral wire open (ground closed) for second Single Fault condition
Hot -
Powered on
Neutral -
System
under
test
Power cord connected to AC power.
(open neutral)
(open ground)
Green or Green/Yellow
Ground wire open for first Single Fault condition,
For
ECG input (defibrillator proof):
LIMITS:
UL, IEC, and CSA:
I
= 10 microamperes Normal condition
50 microamperes Single Fault condition