Radian RM-111 Operation Manual page 27

SER#3 – Enter a serial number for standard 3, if applicable.
*The "Test By:" parameter input allows the user to select the type of test – TIME, PULSE,
MANUAL, or ENERGY. If ENERGY is selected, the "Time:" parameter input dynamically changes
to "Energy:". This allows a test to be stopped after a pre-set amount of energy has been accumulated
by the DUT. standard.
**When testing a standard by counting output pulses, the RM-111 will count the output pulses of
both the reference standard (REF) and the standard under test (DUT), until the selected number
of pulses are achieved. The "Input A:" parameter input allows the user to select either "REF" or
"DUT". If "REF" is selected, the test will stop after the RM-111 counts the specifi ed number of
pulses from the reference standard. If "DUT" is selected, the test will stop after the RM-111 counts
the specifi ed number of pulses from the standard under test. To reduce errors associated with testing
standards with different pulse output constants, the "Input A:" parameter should be set to "DUT"
whenever the DUT has a lower pulse resolution than the reference standard. If "DUT" is selected, the
DUT must be connected to PORT A. Follow the prompts on the RM-111 for connection details.
4. Press ENTER to exit the Test Setup screen.
5. From the Main Menu select RUN TESTS.
6. Select Test Standard.
7. Select the previously confi gured test setup.
8. If not already completed, follow the prompts on the RM-111 to make the appropriate connections.
If using three inputs, see Figure 3.0 "Testing a Radian Standard Using the Average of Three Inputs
(Counting Pulses)" or see Figure 4.0 "Testing a Radian Standard (Counting Pulses)" for testing with
only one reference standard. The number of reference standards defi ned in the test setup determine
how the ports are confi gured. If three reference standards are used, then ports A, B, and C will be
confi gured and their results averaged. This confi guration will allow only one standard under test,
which will connect to port D. For one reference standard, only port A will be confi gured. This option
will allow for up to three standards to be tested.
9. Once connections are complete press ENTER to start the test.
10. The RM-111 counts the number of pulses from both the reference standard(s) and the standard(s)
under test. The watthour count will be displayed when the specifi ed number of pulses have been
counted. The RM-111 averages the multiple reference standards internally then calculates the
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Application 1 Application 1
RM-111 Operations Manual