Edgetech PPM1, Руководство оператора, Страница: 21 / 29

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Next, read the low end output current. It should be about 4 mA.
Type it in as shown above. The system then will
show you the predicted midpoint reading, which in
this case should be within the range of between
11.975 and 12.025 mA. This takes the cumulative
system errors in account.
As shown here the reading is exactly 12 mA,
and the system is within specifications.
Finally, press “X” for E)xit, and the
Hyperterminal window will return to the
default mode, showing continuous updates.
5.4.6 MODIFYING THE RS-232 PORT PARAMETERS
Two RS-232 Port parameters may be
changed in the field. You can enable the
Elapsed Time Stamp, and you can modify the
Update Rate. To start, proceed as follows:
From the
normal
updating
mode as
shown here, press “R” for Rs232. You can
then press “T” to select the Elapsed T)ime
Stamp, or press “R” to select the Update
R)ate. In this example we will leave the
Elapsed Time Stamp disabled, but we will change the Update Rate. See the
Windows shown below.