Monitor Self-Test - GE Corometrics 126 Service Manual

Monitor Self-Test

Revision B
Self-Tests: Monitor Self-Test
The 120 Series Monitor contains test routines which verify the unit's calibration
and internal circuitry. These routines are initiated by depressing the front panel
pushbutton. The test results are printed on the strip chart recorder paper, verifying
the integrity of the unit.
It is recommended practice to initiate the self-test feature at the beginning of each
monitoring session.
1. Check the
Voltage Selection
and ensure it matches the line voltage of the receptacle to be used. Connect the
detachable line cord to the rear panel power entry module; plug the other end
into a hospital grade, grounded wall outlet of appropriate voltage.
2. Place the front panel
Power
first turned on, verify that three tones are emitted from the rear panel speaker
and the green power on indicator is lit.
3. Depress the front panel
All display pixels illuminate for one second and then all are extinguished
for one second. Afterwards, a vertical line moves across the screen from
left to right, followed by a horizontal line moving from top to bottom. The
display then remains black.
The yellow
Record
The message TEST: ARE ALL DOTS PRINTED?
vertical lines which should appear continuous. Discontinuous lines may be
an indication of damaged printhead elements if gaps occur in the same
place on both lines. Simulated trends of 30 and 240 BPM (or 50 and 210
BPM, depending on the paper installed) are printed on the top grid.
Simulated pressure trends at 0 and 100 mmHg are printed on the bottom
grid. The values are also printed in the center margin of the strip chart.
Refer to Figure 8-1.
After the recorder test above, the display returns to the main screen; then
the software generates a 120 BPM rate in the FHR1 area and a 180 BPM
rate in the FHR2 area, with both mode titles displaying
The monitor adds 50 mmHg to the present pressure level and displays this
value in the UA display area; the mode title displays
NOTE: The monitor will add 50 mmHg to raw pressure data. In other words, the
value is always referenced to 0 mmHg regardless of any UA referencing
attempt.
120 Series Maternal/Fetal Monitor
2015590-001
switch on the rear panel of the 120 Series Monitor
switch in the on ( ) position. When the power is
I
Test pushbutton and verify the following:
indicator illuminates.
Test
is printed followed by two
TEST .
.
TEST
8-3