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Percussionaire® Digital Multimeter (PDM)
The PDM has six dierent operating
modes: POST, Wake, Active, Report,
Sleep and Fault.
NOTE: Do not install PDM until the POST check is complete and the screen is blank,
indicating Sleep mode.
Power-On Self-Test (POST) Mode
When batteries are installed in a system, the PDM software displays the software
revision, battery voltage, total usage time and serial number for 15 seconds. This Start-
Up mode allows the software to perform additional tests on the hardware that are part
of the Power-On Self-Test. If any errors are detected the PDM enters the Fault mode.
It is required that the measurement port be left disconnected and exposed to the
atmosphere for the entire duration of the Power-On Self-Test.
Measuring port
connection
CAUTION:
(Do not touch or
insert any object
into this port)
Reset button
(only used
for rmware
upgrades)
Rear view of PDM
System Information Display
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