User manual

921445-00 Rev A

SET UP

Powering On/Off

The Power button controls the operational state of the oscilloscope. Press

the button to switch on the instrument; press it again to switch “off” (i.e.,

Standby power).

Always use the Power button or the File > Shutdown menu option to

execute a proper shut down process and preserve settings. Pressing

and holding the button will execute a “hard” shutdown, the same as on

a computer, but we do not recommend doing this because it does not

allow the Windows operating system to shut down properly.

The Power button does not disconnect the oscilloscope from the AC

power supply; some “housekeeping” circuitry continues to draw power.

The only way to fully power down the instrument is to use the Power

button or the File > Shutdown command, then unplug the AC line cord

from the outlet.

We recommend unplugging the instrument if it will remain unused for a

long period of time.

Probes

HDO4000 Oscilloscopes are compatible with the included passive probes

and all Teledyne LeCroy ProBus active probes that are rated for the

oscilloscope’s bandwidth. Probe specifications and documentation are

available at teledynelecroy.com/hdo4000.

CAUTION. Do not change the instrument’s Windows

Power Options from the default Never to System Standby

or System Hibernate modes.

CAUTION. Do not place the instrument so that it is difficult

to reach the power cord in case you need to disconnect

from power.