Seintek S2800 - Power Circuit; VREF Circuit

10-24
10.3.7. Power Circuit
Measures and compares the + 12V battery voltage of a device.
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Power Circuit
POWER CIRCUIT
BLACK TO BATTERY –(NEG)
RED TO POWER
CONNECTION
To sensor body or engine
To sensor output
Monitor the +12V battery voltage
of a device.
Normal Power Circuit waveform
10.3.8. VREF Circuit
Measures and compares the reference voltage of a device.
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Vref Circuit
VREF CIRCUIT
BLACK TO ENGINE CHASSIS
RED TO TEST POINT
To engine (chassis)
To test point
Level should not change more
than 200 mV under the regular
operation.
Normal Vref Circuit waveform