Revision B 120 Series Maternal/Fetal Monitor 6-25
2015590-001
Functional Checkout Procedure: Tocotransducer Test
Tocotransducer Test
1. Inspect a Nautilus Tocotransducer as follows:
îš‹ Check for any cracks or contaminants on the tocotransducer especially on
the diaphragm located on the bottom of the tocotransducer.
îš‹ Visibly assess the condition of the cable, strain relief, and connector pins.
12. Connect the tocotransducer to the
UA input receptacle on the front panel of the
120 Series Monitor.
IMPORTANT
TRIMLINE TOCOTRANSDUCER—If you are using an older
Trimline tocotransducer for this test, be advised of the following.
If the monitor is on when you connect or re-connect a Trimline
Tocotransducer to the
UA connector, you must wait at least 10
seconds before pressing the
UA Reference pushbutton. If the
monitor is off, you must wait at least 10 seconds from the time the
monitor is powered on.
13. Access the Install Options service mode screen and note the default TOCO
reference setting.
14. Momentarily depress the monitor’s
UA Reference pushbutton. Verify the
following:
îš‹ The UA value shows the default setting.
îš‹ The UA mode shows TOCO.
îš‹ The recorder prints the messages UA REF and TOCO on the strip chart
paper.
15. Apply gentle pressure to the tocotransducer diaphragm and verify that the UA
value responds to the pressure input. Increasing force should produce an
increasing value and vice versa.
16. Remove the tocotransducer from the monitor’s
UA input receptacle. Verify the
following on the monitor:
îš‹ The UA value and mode are both blank.
îš‹ The recorder stops printing the uterine activity trace.
îš‹ The recorder prints the message UA INOP on the center margin of the strip
chart paper after approximately 20 seconds.
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