DH Instruments E-DWT-H, Руководство по эксплуатации и обслуживанию

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E-DWT-H OPERATION AND MAINTENANCE MANUAL
© 2009 DH Instruments, a Fluke Company Page 46
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Test point sequence: ascending, descending or both (Quick AutoTest only).
The initialization data is used to AutoRange the RPM4-E-DWT appropriately for the DUT and test
to be run. At the end of the AutoTest initialization, the RPM4-E-DWT is AutoRanged as follows
(see Section 3.7.5, Table 5):
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RPT: The Lo Q-RPT is active if the maximum pressure in the AutoTest is equal to or less
than 1 000 psi (7 MPa), the Hi Q-RPT is active if the maximum pressure in the AutoTest
is greater than 1 000 psi (7 MPa).
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Pressure unit of measure: As specified in the AutoTest initialization.
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Display resolution: The DUT tolerance divided by 10 and rounded to the nearest digit, or
1 ppm of Q-RPT span, whichever is greater.
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Stability test for
Ready/Not Ready
indication (see Section 3.1.2): The DUT tolerance
divided by 10, or 2 ppm of Q-RPT span, whichever is greater.
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Upper limit (UL): The DUT full scale plus 5 %, or the Q-RPT’s maximum UL, whichever is
less (see Section 3.8.4).
To AutoRange the RPM4-E-DWT based on DUT characteristics but not execute an AutoTest, the
AutoTest can be aborted just after the initialization. Then the RPM4-E-DWT is set up
appropriately for the DUT to be tested but the AutoTest increments don’t execute.
See OPERATION in this Section for information on running a Quick or File AutoTest.
See Section 3.8.5.2 for information on setting up File AutoTest files.
See Section 3.8.5.1 for information on viewing the data files that result from running a File
AutoTest.
 OPERATION
To run an AutoTest, press [ENT] from the Rate, RPT
or Clean run screen (DISPLAY modes that do not use
[ENT] (see Section 3.7.7)). The display is:
Run AutoTest:
1Quick 2File
Select <1Quick> to run a Quick AutoTest or <2File> to run a File AutoTest (see PRINCIPLE
above in this Section) and operation proceeds to test initialization.
3.7.11.1 AutoTest Initialization
When <2File> is selected to run a File AutoTest, the test initialization information
is obtained from the file selected. Operation proceeds directly to the test
confirmation. The RPM4-E-DWT asks the operator to confirm the range of the
AutoTest (<ENTER to run…>), AutoRanges (see Section 3.7.5) and operation
proceeds directly to test execution (see Section 3.7.11.2).
When
<1Quick> is selected to run a
Quick AutoTest, the display is:
Run current Quick
AutoTest: 1yes 2no
Select <1yes> to rerun the last Quick AutoTest (see below in this Section).
Select <2no> to define a new Quick AutoTest.
When <2no> is selected from the <Run current Quick AutoTest> screen, the
AutoTest set-up/edit routine is accessed. The information needed to AutoRange
RPM4-E-DWT based on the DUT characteristics is then collected in successive
screens as follows.