Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW1993740IL (E32/2) V8-3982CC 4.0L DOHC (M60)REPAIR AND DIAGNOSISTESTING AND INSPECTIONLABSCOPE QUICK REFERENCE APPENDIXQUICK REFERENCE LABSCOPE GLOSSARY
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)
Quick Reference Labscope Glossary
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)SECTION Quick Reference Labscope Glossary
Trigger Level: The voltage level the Digital Storage Oscilloscope (DSO) looks for to begin drawing a trace.
Trigger Source: The channel (CH1, CH2) that the DSO is looking at for the trigger level.
Trigger Slope: Determines if the trace begins when the voltage is rising or falling as it crosses the trigger level.
Voltage Scale: The amount of voltage each vertical division represents.
Time base: The amount of time each horizontal division represents.
DC coupling: Allows both AC and DC voltages to be displayed.
AC coupling: Allows only the AC voltage component of a signal to be displayed. It filters out DC voltage (a capacitor is used to filter out the DC voltage).
Ground coupling: Allows you to set the zero voltage position on the DSO.
Auto trigger: Allows a scope to begin drawing its trace even if there isn't a trigger set manually.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.