Menu Reference 3
E4418B Power Meter User’s Guide 137
Press this softkey to verify that the keys are functioning correctly.
Once you enter this test, you are prompted to press all the keys and
verify the correct descriptions are displayed on the screen.
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Press this softkey to run a test on the internal cooling fan.
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Press this softkey to access a menu of various front panel display
patterns.
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Press this softkey to make internal measurements on the display.
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Press this softkey to perform a display RAM read or write test.
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Press this softkey to display test patterns. Instructions appear on
the screen detailing the use of to cycle through the various
bitmaps and to end the displays.
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Press this softkey to access a menu which gives you a selection of
serial interface tests to perform.
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Press this softkey to initiate a test which writes to the scratch
register and reads back. The test also sets the baud rate, word
length, stop bits and parity; then reads back from the UART to
check that the settings are correct.
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Press this softkey to initiate a UART local loop back diagnostic
with the transmitter (Tx) internally connected to the receiver
(Rx).
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Press this softkey to initiate an RS232 loop back test on the serial
interface port. A pop- up message appears stating that a test
connector must be in place. The test connector must have the
following pins jumpered: Tx (3) and Rx (2), RTS (7) and CTS (8),
DTR (4) and DSR (6).
This test will only run if the RS232 interface is currently selected.
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