Concorde BC-8000 Процедура польового калібрування - Сторінка 3
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Також для Concorde BC-8000: Посібник (14 сторінок)
Друкувати сторінку8. Verify the Fluke 87 DMM frequency is 449.8 Hz to 450.2 Hz (450 Hz
±0.2 Hz).
9. Write the Frequency measurement reading into the calibration work
sheet. (450 Hz) If the frequency is not 449.8 Hz to 450.2 Hz, the unit
must be sent in for repair. The crystal oscillator should provide an
accurate time base for the entire life of the BC-8000. If the unit fails
this test, it is an indication that the crystal time base may have been
damaged.
10. Turn OFF the BC-8000 power.
ADJUST 10.00 and 20.00 VOLT CUTOFF:
1. Set DMM to a voltage range of 0-200 Volts.
2. Connect DMM minus - to VOLT minus - test point on the CF1 test
device.
3. Connect DMM plus + to VOLT plus + test point on the CF1 test device.
4. Turn ON the BC-8000 power switch.
5. After the sign on message the unit will display "Code:". The UP and
DOWN buttons will increase or decrease the digit's number value. The
NEXT button will advance to the next digit. Using the UP, DOWN, and
NEXT buttons, enter the code of "1234". Press NEXT.
6. On the CF1 test device, select the 10 Volt range and turn the voltage
adjustment knob to obtain a voltage of 10 volts ±0.010 volts on your
DMM.
7. The unit will display: "CAL VOLTS". Press NEXT. The unit will display
"CAL Volts? 10", press NEXT. The unit will display the voltage on the
right and the word "ADJUST".
8. Use the UP and DOWN buttons to make the display read "10.00".
Press NEXT to save the calibration data. Wait for the word "SAVED"
to appear then disappear.
9. Write the DMM Voltage reading into the calibration work sheet. (10 volt
cutoff)
10. On the CF1, select the 20 Volt range and turn the voltage adjustment
knob to obtain a voltage of 20 volts ±0.010 volts on your DMM.
11. The unit will display: "CAL VOLTS". Press NEXT. Press UP. The unit
will display "CAL Volts? 20", press NEXT. The unit will display the
voltage on the right and the word "ADJUST".
12. Use the UP and DOWN buttons to make the display read "20.00".
Press NEXT to save the calibration data. Wait for the word "SAVED"
to appear then disappear.
13. Write the DMM Voltage reading into the calibration work sheet. (20 volt
cutoff)
14. Turn OFF the BC-8000 power.
15. Unplug the BC-8000 from the CF1 VOLTAGE OUTPUT
CONNECTOR.
16. Disconnect the CF1 test device ring terminals from the 24 volt power
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