8 Chadwick-Helmuth Company, Inc.
Chapter 2 - System Overview
2.2.1.2 System Benefits
The Vibrex 2000 system offers the user the following benefits:
• Reduced aircraft operating costs and down time
• Reduced propeller and rotor vibration that translates into increased
reliability, increased mean time before failure (MTBF) for avionics,
as well as mechanical and aerodynamic structures
• Better ride comfort for pilots and passengers
• Federal Aviation Association (FAA)-approved propeller balance,
when used with Chadwick-Helmuth’s The Smooth Propeller manual
publication
• Balance jobs that are stored in memory and can be archived on a PC
• A 32-bit microprocessor for rapid-balance computations and FFT
calculations
• Use of common rechargeable or disposable D-cell batteries
• Chadwick-Helmuth's legendary worldwide customer support
2.2.1.3 Self-Test Feature
Each time Vibrex 2000 or the Vibrex 2000 Plus unit is powered up, it
checks its memory and characterizes its analog filters to compensate for
aging components, temperature drifts, and so on. The unit then reports the
total amount of time the batteries have been used since installation.
Press the unit’s
STATUS
key to display checked battery and sensor
voltages, along with the date, time, and firmware version. Using this key,
you may print the fault log for easy troubleshooting. See Section 6.4.1
“Fault Logs” on page 145 for details.
Self-Test Modes -
The power-up self test has the following modes:
Comprehensive Test - Performed if the unit has been turned off for more
than 2 hr and takes approximately 20 sec, that is, the unit’s full built-
in test (BIT). Such timing allows this test to be done sufficiently to
ensure that all the unit’s functions are tested at reasonable intervals.
Abbreviated Test - Takes only a few seconds. The unit does this test if it
has been in use during the last 2 hr. The comprehensive test (or BIT)
is unnecessary each time the unit is powered up, so the unit only does
an abbreviated test for short-term power-down/power-up cycles.
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