Powering-Up the 248
1. Connect the power supply cord to the power supply. The 248 begins the
power-up sequence:
a. The 248 checks the RAM, ADC, voltage reference buffer, voltage
offset DAC, motor DACs, comparitor port, RTC, battery backed
RAM, probe, printer hardware and fluid detectors and then displays
Warming Up.
2. While the 248 is warming up you can:
a. Prime the 248 to remove bubbles from the calibrant lines:
1. Press # for menu, 2 for Maintenance and 3 for Prime.
2. If necessary, repeat the routine to thoroughly prime the system.
b. Condition the sensors:
1. From Maintenance press 2 for Condition.
c. Initiate a 2-point calibration:
1. From Maintenance press 1 for Calibration and 2 for Full 2 Point.
The data from this calibration will not be used.
d. Configure the 248:
1. Refer to Section 5, Configuring the System.
3. When the 248 reaches operating temperature it will carry out two
full 2 point calibrations 10 minutes apart.
4. When the 248 displays Ready perform the appropriate quality control
procedures.
5. Your 248 installation is complete.
Page F-6 248 Operator’s Manual
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