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Block 4 > Electrical > Flashcards

Electrical Flashcards

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1
Q

What is multiplexing

A

A concept where transmission of more than one electrical signal or message takes place over a single or pair of wires.

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2
Q

What is typology

A

Describes how modules are connected to one another.
Bus
Star
Ring

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3
Q

What is network protocol

A

Refers to the rules or standards used to communicate over the networks. Device naming fault code structure and physical layer are examples of this

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4
Q

What is time division multiplexing

A

Requires the modules and other devices to take turns, sharing the data bus communication pathway

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5
Q

What is MID (message identifier)

A

Identifies which module is reporting the fault

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6
Q

What is SID

A

Identifies a specific failed component or replaceable subsystem

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7
Q

What is a parameter identifier (PID)

A

A value being reported

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8
Q

What is FMI

A

Fault mode identifier
Type of failure detected in the system

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9
Q

What is a customer programmable parameter

A

Seat memory, radio station, cruise control, idle time

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10
Q

Where does 5v reference come from

A

From voltage regulator in ecm

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11
Q

What is an anolog signal

A

An electric current that is proportional to a continuously changing variable, looks like a heart monitor

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12
Q

What is a digital signal

A

Signals that represent 1-0 yes or no, on or off

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13
Q

What is a bit (binary digit)

A

Smallest piece of digital or binary info represented by a 1 or 0

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14
Q

What is a byte

A

A combination of 8 bits

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15
Q

What is serial data

A

Data transmitted in series one bit after another along a single or pair of wires

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16
Q

Anolog to digital conversion

A

To covert anolog signals to digital binary info, buffers or anolog to digital converters are used

17
Q

What is pulse width modulation

A

Refers to a signal that varies on or off

18
Q

What is duty cycle

A

Another unit for measurement for PWM signals, duty cycles is measured as a percentage, on time versus off time

19
Q

What is ROM (read only memory)

A

Permanent storage of instructions and fixed values such as overheat temp type of trans ecm can only read and cannot change instructions in the ROM

20
Q

What is RAM (random access memory)

A

Temp storage for info that needs to be accessed quickly, ram memory is bith readable and writable

21
Q

What output sigbal does a magnetic pulse generator produce

A

A/C low voltage

22
Q

What output sugnal does a hall effect switch produce

A

Digital over 5v

23
Q

What output does a decent and ptc produce

A

Conditioned DC voltage

Block 4 (11 decks)

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