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BIT SYSTEM TESTS
BIT SYSTEM TESTS
Utilized to improve the reliability, safety, and security of mission-critical applications, Built-
in-test (BIT) applications offer the ability to quickly and easily identify a specific component
when a fault is detected. This is the fundamental promise of an effective Built-in-tests (BIT)
system. BITs are self-test processes supporting display maintenance in that they monitor the
display, as well as detect and isolate faults of the display.
BIT applications also offer tools to identify operational readiness, or where necessary, iden-
tify specific degraded or failed conditions relative to the display. The PSM supports three (3)
Built-In-Test (BIT) components: Power-UP BIT (P-BIT) Initiated BIT (I-BIT), and Continuous
BIT (C-BIT). P-BIT runs at Power ON; I-BIT confirms all systems are functioning, and C-BIT
runs in the background.
All BIT results are stored in memory with time and date stamping, and failures are listed in
the Test Log Box as shown on the display screen.
DVR SYSTEM TESTS
BIT system tests present the ability to know that a fault exists.
Table 7 (Page 37) provides the
DVR BIT System Test Summary with brief definitions of the BIT available for the DVR. Tests are de-
signed to assess the health of the display and to improve diagnostics, minimize maintenance, and
reduced debugging time.
Running Initiated BIT (I-BIT) allows the user to confirm specific monitor systems are function-
ing. I-BIT results are shown in the test log box in the center of the display screen. Table 7
explains System Tests Error Codes, and Table 8 lists System Tests.
P-BIT searches for er-
Power-UP BIT (P-BIT), is a series of BITs the display initiates at Power ON.
rors, and provides confirmation that specific systems are functioning at Power ON. Systems
tested are: RAM, ROM, EEP, DVR, Key, and PWR (Power).
For the purpose of detecting an external communications error from an incoming signal, Con-
tinuous BIT (C-BIT) runs in the background. C-BIT verifies the input connector is operative by
verifying data integrity through the external communications port.
All BIT results are stored in memory with time and date stamping, and failures are listed in
the Test Log Box as shown on the display screen.
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MPC-ML2DVR-UM(B) 3/2019
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