Revision B4-22
Troubleshooting: Diagnostic Tests
MAC 5000 resting ECG analysis system
2000657-002
Modem Test
Connect a modem to COM 2 and select the test. The test returns the
modem ID number, firmware rev, and current parameter settings. If
communication with the modem is unsuccessful, the ID and firmware
rev display N/A.
Acq. Module Tests
Follow the instructions on screen.
■ Tests if the front end is powered
■ Tests if the front end is communicating
■ Displays the front end noise floor
■ Indicates when one of the three front end buttons is pressed
Analog I/O Tests
Analog Output Test
Follow the instructions on screen to monitor the analog outputs using
an oscilloscope. The outputs monitored are:
◆ +12V
◆ DC Output 1
◆ DC Output 2
◆ ECG Output
◆ TTL Trigger Output
Four sets of outputs are possible. Select the output sets using the arrow
pad.
Analog Input Test
Follow the instructions on screen to connect a DC voltage to the DC
input pins of the ANA/TTL connector. The voltage of the DC input
displays.
DCOut Loopback Test
Follow the instructions on screen to connect the DC Outputs to the DC
Inputs. The test sends all possible values out the DC Outputs and
confirms that the correct values are read from the DC Inputs. A pass/fail
result displays.
ECGOut/QRSTrigger Loopback
Test
Follow the instructions on screen to connect the ECG Output and TTL
Trigger Output to the DC Inputs. The test sends all possible values out
the ECG Output and a square wave out the TTL Trigger Output. It
confirms that the correct values are read from the DC Inputs. A pass/fail
result displays.
Floppy Drive Tests
Follow the instructions on screen. A read/write test is performed on a
formatted floppy disk. A pass/fail test result displays.
A head radial alignment and Azimuth alignment test is performed using
an Accurite test disk. Test values display.