4-24 MAC™ 3500 Resting ECG Analysis System Revision L
2021337-036
Troubleshooting: Diagnostic Tests
To run test, connect ECGOut1 (pin 8) to Analog Input (pin 7) and QRSTrigger
(pin 3) to Analog Input (pin 9).
NOTE
If test fails you may need to replace
the CPU board. (See “Main CPU
Board Replacement” on
page 5-22.)
Floppy Drive Tests
This option does not apply to the MAC 3500 system.
PIN Name Pin Name
1 +12v 6 DC Output 2
2 DC Output 1 7 DC Input 1
3
*
TTL Trigger Output
* also called “QRS Trigger”
8
ECG Output
4 Ground 9 DC Input 2
5Ground
1
6
5
9
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