Ultrasound Test - GE Corometrics 170 Series Service Manual

Ultrasound Test

Revision C
Functional Checkout Procedure: Ultrasound Test
This portion of the functional checkout procedure ensures the integrity of the
ultrasound circuitry and the heart rate channel of the recorder.
1. Connect the simulator's US sub-cable to the
2. Set the switches on the Model 325 Input Simulator according to
3. If not already on, press the monitor's
4. Turn the simulator's
approximately 120 BPM. Verify the following on the monitor:
The FHR1 value is 120 BPM.
The FHR1 heartbeat indicator (
minute.
Ultrasound audio volume from the rear panel speaker can be increased or
decreased using the left pair of
the desired level.)
The recorder prints a continuous line at 120 BPM on the top grid of the
strip chart paper.
The recorder prints the message
paper after approximately 20 seconds.
5. Use the simulator's
Manual Adjustment knob
by less than 13 BPM from the 120 BPM baseline. Verify the following on the
monitor:
The FHR1 value immediately reflects this new input rate.
The strip chart recorder immediately reflects this new input rate.
Use the simulator's
value by more than 13 BPM from the 120 BPM baseline. Verify the
following on the monitor:
The FHR1 value immediately reflects this new input rate.
The strip chart recorder prints at the last input rate for an additional 3
seconds before blanking the heart rate data and printing a continuous line at
the new input rate.
6. Set the simulator's
US Rate
FHR1 value counts between approximately 50 and 210 BPM and that the
recorder prints a ramp between the same values. (Refer to
Table 6-3. Ultrasound Test Simulator Settings
Section
US/FMD
170 Series Monitor
2000947-004
US
pushbutton.
Record
knob to input an ultrasound signal of
Manual Adjustment
) flashes at a rate of 120 times per
pushbuttons. (Set the volume to
Volume
on the center margin of the strip chart
US
to increase the heart rate value
knob to decrease the heart rate
Manual Adjustment
switch to the RAMP position. Verify that the
Switch
Mode
Signal Level
Rate
receptacle on the monitor.
Table 6-3.
Figure 6-3.)
Setting
US
MED
MANUAL
6-13