GE Corometrics 250cx Series Service Manual page 63

3.3.4.7 FECG Input Check
NOTE: The instructions in this procedure are based on the use of Fluke
for Corometrics
TM
1. Make sure the monitor unit and the PS320 simulator are both turned off.
2. Connect a Y adapter cable (GE Part number: 1442AAO) to the monitor and then connect the 3-Lead FECG
cable (orderable through GE part number: 2025177-055) to the FECG connector of the Y adapter and the
left panel terminals of the PS320 simulator as per below connection diagram:
3-Lead ECG Cable Terminal Name
Left Leg (LL)
Right Arm (RA)
Left Arm (LA)
3. Turn on the PS320 simulator and the monitor unit.
4. Use the PS320 simulator front panel to set the Fetal ECG parameters, Fetal(Rate) to 60 BPM and Amplitude
to 0.5mV.
NOTE: For PS320 simulator setup information, see Appendix D .
5. Look at the monitor display until the monitor displays a value of 60 BPM and confirm that:
a. The MHR/P mode shows MECG.
b. The MHR heartbeat indicator (
6. Change the Fetal rate to 80BPM in the PS320 simulator. Confirm the following on the monitor display and
the recorder:
a. The MHR Value shows 80 ± 1.
b. The MHR heartbeat indicator (
c. The ECG "beep" volume is generated from the rear panel speaker. The volume can be adjusted on the
MHR/P Setup screen.
d. The recorder prints a continuous line at 80 BPM on the top grid of the strip chart paper. (Set HR/PR
Trace to On in the MHR/P Setup screen.)
7. Repeat step 6 for each of the following rates: 100, 120, 140 and 160 BPM.
© 2013 by General Electric Company. All rights reserved.
325 simulator use instructions.
shall be connected to
shall be connected to
shall be connected to
) flashes at a rate of 60 times per minute (1 per second).
♥
) flashes at a rate of 80 times per minute.
♥
Chapter 3: Maintenance and Checkout
®
PS320 simulator. Refer to Appendix G
PS320 Simulator - Left Panel Terminal
Fet/Mat
Fetal
Reference
2036947-001
45