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Service manual Functional verification 29
The patient isolation test requires an AC Withstand voltage high potential (hi-pot) tester,
such as the AR 3605 or equivalent. If this equipment is not available, Welch Allyn can
perform the patient isolation test for you quickly, for a nominal fee.
Patient isolation test - procedure
1. Set up the test parameters on the AC Withstand Voltage Tester as follows:
WARNING The patient isolation test involves exposure to extremely high
voltages, and is therefore extremely hazardous.
WARNING Always follow the tester manufacturer’s operation instructions
exactly. Failure to perform this test properly can result in serious injury or death.
WARNING This test must be performed by qualified service personnel only.
WARNING Run this test only on an insulated table top, and away from other
people and equipment.
Test connections
Cable Monitor connection Hi-pot tester connection
Connector/cable Connect to Wiring Connect to
DC Input Switchcraft 760
0.100” ID
0.218” OD
DC Input Connector Both wires connected together
and terminated appropriately
for your hi-pot tester
Return
SpO
2
(Nellcor)
NellcorD-connector(DEC-8
or other
OXI-MAX equivalent)
SpO
2
Input Connector All wires connected together
and terminated appropriately
for your hi-pot tester
High Voltage
SpO
2
(Masimo)
Masimo 14-pin mini
D-connector
SpO
2
Input Connector All wires connected together
and terminated appropriately
for your hi-pot tester
High Voltage
RS232 RJ45/standard patch cable Communication
Connector
All wires connected together
and terminated appropriately
for your hi-pot tester
High Voltage
Nurse Call Welch Allyn Nurse Call
cable 008-0634-XX (Uses
Lemo connector
PAB.MO.4GLAC397.)
Nurse Call Connector All wires connected together
and terminated appropriately
for your hi-pot tester
High Voltage
Note
Refer to the tester manufacturer’s operation manual for complete details on
setup and use.
Parameter Specification Parameter Specification
Voltage 1500Vac Ramp Down 0
Maximum Limit 2.50 mA ArcSense 0
Minimum Limit 0.038 mA Frequency local line (50 Hz or 60 Hz)
Ramp Up 5.0 S Continuity Off
Dwell 5.0 S Connect Off
Delay 0
Note
To create test cables for this procedure, see the previous table.