Fluke NetDAQ 2640A, Руководство по обслуживанию

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Performance Testing and Calibration
Performance Test
4
4-11
3. Verify Accuracy Configure the 5700A for the output values below and verify the
Spy window measurement is between the minimum and maximum values. Change
the channel 1 range as required (see Step 1).
Frequency Range 5700A Output Minimum Reading Maximum Reading
Autorange Only 1V@10 kHz 9.994 kHz 10.006 kHz
4. Close Spy Window To close the Spy window, double-click the upper left-hand
corner control-menu box.
Analog Channel Integrity Test 4-10.
Complete the following procedure to test the integrity of each analog channel (2 to 20) to
verify each analog channel is capable of making measurements.
1. Configure Channel for Ohms In NetDAQ Logger for Windows, configure
channels 2 (then 3, then 4, etc. because this step is repeated) to 20 for ohms-2T, 300
range [2640A] or 30K range [2645A].
2. Connect Test Leads Remove the Universal Input Module from the instrument,
disconnect the test leads, and connect them to the channel under test (starting with
channel 2). Reinstall the Universal Input Module in the instrument.
3. Open Spy Window Select the Spy command from the Utilities menu. Select the
analog channel under test. Click OK to open the Spy window.
4. Verify Reading Alternately open and short the test leads. Observe the measurement
for the analog channel under test in the Spy window shows Overload for opened
leads and very low resistance for shorted leads (less than 10 ohms for the 2640A, or
less than 1k
Ω
for the 2645A).
5. Repeat Test for each Channel Repeat steps 2 to 4 for each channels (3, 4, 5, and so
forth to channel 20).
Computed Channel Integrity Test 4-11.
Complete the following procedure to test the integrity of each computed channel (21 to
30) to verify each computed channel is capable of making measurements.
1. Configure Channels 1 and 2 for Ohms In NetDAQ Logger for Windows,
configure channels 1 and 2 for Ohms-2T, 30k range.
2. Configure Channel for Average In NetDAQ Logger for Windows, configure
channels 21 to 30 for ChanA - ChanB (Difference) with the difference channels
being analog channel 1 and analog channel 2.
3. Connect Test Leads Remove the Universal Input Module from the instrument and
connect test leads to channels 1 and 2. Reinstall the Universal Input Module in the
instrument.
4. Open Spy Window Select the Spy command from the Utilities menu. Select the
computed channels 21 to 28. Click OK to open the Spy window.