Diagnostic Tests
2
-
24
Performance Verification and Safety Tests
To test amplifier gain:
1. Connect the ECG simulator to the pads cable. Set the simulator output for
sine wave, 2 Hz or 10 Hz, 1 mV peak-to-peak.
2. Following the instructions under "Changing settings" on page 2-23, set
Selected lead
to
Pads
. Only the
Monitor
frequency response will be avail-
able.
3. Wait for the displayed value under
Monitor
to stabilize.
4. The displayed value should be 1000 +10% (+100). Record this as "aaaa".
5. Connect the ECG simulator to the ECG leads cable.
6. Following the instructions under "Changing settings", set
Selected lead
to
Lead II
.
7. Wait for the displayed value under
Diagnostic
to stabilize.
8. The displayed value should be 1000 +10% (+100). Record this as "bbbb".
To test amplifier noise:
1. Turn the simulator off. Leave it connected to the ECG cable, and leave
Selected lead
set to
Lead II
.
2. Wait for the displayed value under
Diagnostic
to stabilize.
3. The displayed value should be 0 + 30 uV. Record this as "cc".
If the unit exhibits more than 30 uV of noise, try repositioning the cable
or unit to minimize external interference. See "Reducing Electromagnetic
Interference" on page 7-18. Also try various combinations of having the
ECG simulator turned on or off, and (if applicable) whether the simulator
is plugged into the AC mains.
4. Following the instructions under "Changing settings", set
Selected lead
to
Pads
.
5. Connect the simulator to the pads cable.
6. Wait for the displayed value under
Monitor
to stabilize.
7. The displayed value should be 0 + 30 uV. Record this as "dd".
PCI function
This test checks the PCI (Patient Contact Impedance) function. The PCI mea-
surement is used to detect
Pads Off
.
1. Connect the test load to the pads cable.
2. The PCI setting should always be
Off
(factory set default). If it is
On
, press
the Volume Up and Down arrow keys simultaneously to turn it
Off
. (See
Figure 2-1 on page 2-11.) The software feature this setting controls is not
used in the M3500B/M5500B.
3. The PCI measurement should read 50 ohms +30 ohms. Record this
as "ee".
4. Disconnect the test load and leave the end of the cable open. The PCI
measurement should read > 2000 ohms (full scale). Record this
as "ffff".
Summary of Contents for Heartstart XLT
Page 1: ...H E A R T S TA R T X LT S e r v i c e M a n u a l M 3 5 0 0 B M 5 5 0 0 B ...
Page 2: ......
Page 3: ...Service Manual M3500B HeartStart XLT M5500B Heartstart 4000 Defibrillator Monitor ...
Page 6: ......
Page 16: ......
Page 20: ......
Page 52: ......
Page 216: ......
Page 223: ......
Page 224: ...M3500 90900 Printed in USA February 2003 Second Edition M3500 90900 2 ...