Teledyne LeCroy WaveExpert 100H Operators Manual - Manual (Page 40)

Operator’s Manual
38
WE-OM-E Rev A
Standby (Power) Switch and Scope Operational States
The front Standby (Power) switch controls the operational state of the scope. This toggle switch is
activated by momentarily pressing and releasing it. The color of the LED below the switch indicates
the status of the scope as follows:
On (LED Green)* scope is fully powered and operational
Standby (LED Off)* scope is powered off (except for some “housekeeping” circuits)
Standby (LED Red) scope’s computer subsystems (hard drive, etc.) are in Standby (reduced
Power mode). All other scope subsystems are fully powered.
* Factory Settings
The scope’s factory settings result in only two basic scope states: On (LED Green) or Standby
(LED Off). In this case of Standby (LED Off), the scope is powered off with the exception of some
“housekeeping” circuitry (approximately 12 watts dissipation). The scope can only be placed in a
complete power off state by unplugging the scope’s power cord from the primary power source (AC
outlet). It is recommended that the power cord be unplugged from the AC outlet if the scope is not
being used for an extended period of time.
You have the option to change the scope's original factory settings via the “Power Options
Properties” menu in Windows by following the path: Settings Power Options. It is important to note
that the Windows Power Option named “Standby” provides control of only the scope’s computer
subsystems (CPU, hard drive, etc.) and does not affect the other subsystems within the scope. In
general, these other subsystems remain fully powered. For additional information on setting these
Power Options, see the Windows Help menu or other related technical documentation. In terms of
control buttons, this scope uses only a power button/switch and therefore references to a sleep
button are not applicable.
The scope can always be placed in the Standby state (LED Off) Power Off (except for some
“housekeeping” circuits) by pressing and holding in the Standby toggle switch for approximately 5
seconds.
Fuse Replacement
Set the scope Standby (power) switch to
Standby mode (LED off) and disconnect the
power cord before inspecting or replacing the
fuse. Open the black fuse holder (located at
the rear of the scope directly to the right of the
AC inlet) using a small, flat-bladed
screwdriver. Remove the old fuse, replace it
with a new 5x20 mm “T” rated 6.3 A/250 V
fuse, and reinstall the fuse holder.
WARNING
For continued fire protection at all line voltages,
replace fuse with the specified type and rating only.
Disconnect the power cord before replacing fuse.