120 Display Test
a. Push the START/STOP switch to start the test.
b. Half of all the display segments will operate. Push the START/STOP switch again to check the
remaining display segments.
c. After completing this test, select another test by pushing the INTERVAL UP key.
180 Calibration Mode Test
(Use apparatus shown in Figure 7.3)
In this test, the user can verify the accuracy of the internal pressure sensor by introducing a known air pressure
valve into the Press-Mate then comparing the pressure value from the display to that of the connected calibrated
manometer.
a. Make sure that there is nothing connected to the cuff connector.
b. Press the START/STOP switch to start the test.
c. The unit will begin to pump air out of the cuff connector.
d. Use a finger to completely cover the cuff connector opening, then release. This will reset all
displayed values to zero.
e. Connect a hand pump and a calibrated manometer to the cuff connector.
f.
Use the hand pump to change the pressure within the system while comparing the values from the
manometer to the display.
g. The input pressure and the tolerances are as follows:
Input Pressure
Acceptable Pressure
0 mmHg
0 mmHg
100 mmHg
100 ± 1 mmHg
150 mmHg
150 ± 2 mmHg
300 mmHg
300 ± 3 mmHg
Calibration Mode
Press-Mate Model 8800 configuration for Calibration Test
Figure 7.3
7-7