METRON QA-45 User Manual

19. Measure the resistance between TP102 and TP107.
Requirement 10 kOhm (±10 ohm).
Measure the resistance between TP104 and TP110.
Requirement 10 kOhm (±10 ohm).
20. Set power switch to ON. Connect a frequency counter to pin 3
on IC106 and measure the frequency.
Requirement: 1.9 MHz (±200 kHz).
21. Measure the voltage between TPl12 and TP100. Adjust P104
until the voltage is 5V (±0.0005v).
22. Go to the System Test Menu and choose A/D-read by moving
the cursor and pressing SELECT (F4). The input voltage at the
A/D converter should be displayed on the screen. The value is
updated once every second. Adjust P103 until the value is as
close to 0 as possible.
23. Connect a 10V (±0.01v) power source between TP107 and
TP110. Check that the Mode switch is set to High. Adjust P102
until the displayed value is 1997.5 mV and 2000 mV. Change
the polarity on the power source and re-measure the voltage.
Adjust P102 and P103 until the value displayed is between
1997.5 and 2000 mV regardless of the polarity status. Check
that the scope output is +2000 mV (±20 mV) or -2000 mV (±20
mV). Remove the power source and secure P102, P103 and
P104. Switch Off the power.
24. Connect a printer to the printer port. Switch on the power. heck
that the Mode switch is set to High. Go to the System Test
Menu and activate TEST PULSE (F1). Check that QA-45
gives a correct printout, that the energy measurement on the
display and printer is 125 Joules (±20 %), and that the measured
voltage is approx. 2500 V. Set the Mode switch to Low and ac-
tivate TEST PULSE (F1). Check that the measured energy
value is approx. 5 Joules (±20 %), and that the measured volt-
age is approx. 500V.
25. Connect a PC to the serial port and try to control QA-45 re-
motely. Check that communication functions in both directions.
26. Go to the System Test Menu and choose ECG +. (Last setting
for pacer should be default setting: 500 ohm). Measure the volt-
ages In pacer module with the multimeter. The following values
are acceptable:
Test point
- +
Level Maximum
Deviation
TP1 - TP5 -2.378V
±23 mV
TP1 - TP6 +2.378V
±23 mV
4

METRON QA-45 Specifications

General

Brand	METRON
Model	QA-45
Category	Measuring Instruments
Language	English