Fluke NetDAQ 2640A, Service Manual

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Performance Testing and Calibration
Performance Test
4
4-7
7. Configure Icon Note the Icon Bar in the Main Window. If the Icon Bar shows
instrument 01, complete Reset Instrument Icon below. If the Icon Bar does not show
instrument 01, complete Create Instrument Icon below.
Reset Instrument Icon Select the Delete Instrument Icon form the Setup menu. If the
command is dimmed, Configuration Lockout is checked in the Options menu. Click
Yes in warning message. Complete Create Instrument Icon below. (This sequence
clears all configuration data from the instrument.)
Create Instrument Icon Select the Create Instrument Icon from the Setup menu. If
the command is dimmed, Configuration Lockout is checked in the Options menu.
Select instrument 01 on the Available Instruments List. Click OK.
8. Select Reading Rate and Trigger Out Click the Instrument Config button on the
Button Bar, opening the Instrument Configuration dialog box. Select Reading Rate =
Slow, and check the Trigger Out box. Click OK to return to the Main Window.
9. Connect DIGITAL I/O Test Leads Remove the 10-position DIGITAL I/O
connector from the instrument rear panel or from the connector kit supplied with the
instrument. Connect a test lead to each DIO line 0 to 7, plus a test lead to the
Σ
(Totalizer) input and the common GND line. Reinstall the DIGITAL I/O connector.
10. Connect ALARM/TRIGGER I/O Test Leads Remove the 8-position
ALARM/TRIGGER I/O connector from the instrument rear panel or from the
connector kit supplied with the instrument. Connect a test lead to each line, MA
(Master Alarm), TO (Trigger Output), TI (Trigger Input), plus a test lead to the
common GND line.
Accuracy Performance Tests 4-5.
This accuracy performance test assumes you have completed "Initializing the
Performance Test Setup" above. Do not begin this test until the instrument has
temperature stabilized for a minimum of 30 minutes. Do not use the instrument front
panel monitor function for performance testing; use the higher resolution Spy window at
the host computer as specified in the procedures. The Accuracy Performance Tests
include the following:
• Volts DC Accuracy Test
• Volts AC Accuracy Test
• Frequency Accuracy Test
• Analog Channel Integrity Test
• Computed Channel Integrity Test
• Thermocouple Temperature Accuracy Test
• Open Thermocouple Response Test
• Two-Terminal Resistance Accuracy Test
• Four-Terminal Resistance Accuracy Test
• RTD Temperature Accuracy Test (Resistance Source)
• RTD Temperature Accuracy Test (DIN/IEC 751 RTD Source)
Tests for current dc are not included since these functions are derived from volts dc.