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3. OPERATION

Page 43

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Test increment in % FS (Quick AutoTest) or number of test increments and the value of each
increment in the pressure unit of measure (File AutoTest).

•

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 4):

•

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).

•

Pressure unit of measure: As specified in the AutoTest initialization.

•

Display resolution: The DUT tolerance divided by 10 and rounded to the nearest digit, or 1
ppm of Q-RPT span, whichever is greater.

•

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.

•

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.

•

<Pressure units of measure>:

The units of measure screen from the [UNIT]

function key is presented (see Section 3.7.3). Select the desired pressure unit of
measure. The choice of units may be modified (see Section 3.9.6).