Nurse Call Relay Test
Performance Verification Testing
3-30 Efficia CM Series Service Guide
• Tip — Relay normally open, closed for alarm
• Ring — Relay normally closed, open for alarm
• Sleeve — Common
To perform this test, you need:
• A patient simulator
• An ohmmeter
• A phono connector
To perform the nurse call relay test:
Step
1
Plug the phono connector into the Nurse Call connector on the back of
the monitor.
2
Use the ohmmeter and simulator to verify relay operation as follows:
3
If the nurse call function does not work as expected, see “Nurse Call
Problems” on page 4-12
Note — Philips employees record this value as NC:P or NC:F.
Tip
Ring
Sleeve
Condition
Phone Jack Connector Tip
(Relay Normally Open)
Phone Jack Connector Ring
(Relay Normally Closed)
Alarm Closed Open
No alarm Open Closed