9 DC Line Voltage Calibration
9-2 FLO-GARD 6301 DUAL CHANNEL VOLUMETRIC INFUSION PUMP SERVICE MANUAL 07-19-B1-729
4. Connect an oscilloscope to Vmain (pin 6) or using a 0.1 mF capacitor
with the lead connected in series and the voltmeter set to AC verify the
ripple voltage:
Q The ripple voltage should be ≤100 mVp-p at 105 VAC.
5. Connect the voltmeter to Vref (pin 1).
6. Power up the pump.
7. While both pumps are in STOP mode, the voltage should be 5.000
±0.050 VDC.
8. Measure the Vcpu voltage at pin 3. The voltage should be 5.00
±0.30 VDC.
9. Measure the Voth voltage at pin 4. The voltage should be 12.90 to
13.90 VDC.
10. Measure the Vkey voltage at pin 5. The voltage should be 5.00
±0.30 VDC.
11. Measure the lithium backup battery voltage at pin 7. It should be 3.0 to
3.4 VDC.
12. Press the ON-OFF/CHARGE key to turn off the pump. Disconnect all
test equipment.
13. Replace the battery cover.
14. Calibration is not required when Vcpu voltage is within specifications.
Q If the values are within specification, proceed to step 15.
Q If the values are out of specification, calibrate the voltages using the
following procedure.
14.1 Connect the calibration circuit shown in Figure 9-1.
• Variable transformer; 100 - 135 VAC, minimum 50 VA.
• Digital voltmeter: 4.5 digits with ±0.1% accuracy at 20 VDC
range and ±3% accuracy at 100 - 135 VAC range.
• DC ammeter: 2 ADC in 0.01 A increments.
• Resistive load as shown in Figure 9-1
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