Standby (Power) Switch And Scope Operational States; Fuse Replacement - LeCroy SDA Operator's Manual

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 two basic scope states: On (LED Green) or Standby (LED
Off). In Standby (LED Off), the scope is powered off with the exception of some "housekeeping"
circuitry (approximately 12 watts of dissipation). The scope can only be placed in a complete
power off state by unplugging the instrument's power cord from the primary power source (AC
outlet). It is recommended that the power cord be unplugged from the AC outlet when the scope
is not used for extended periods of time.
The scope can be changed back to the original factory settings using the "Power Options
Properties" menu in Windows at the following the path: Settings
important to note that the Windows Power Option named "Standby" only provides control of 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.
Therefore, sleep button references are not applicable.
The scope can always be put in the Standby state (LED Off) Power Off (except for some
"housekeeping" circuits) by pressing and holding the Standby toggle switch for approximately 5
seconds.

Fuse Replacement

Set the scope's 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 instrument 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 10.0 A/250 V fuse, and reinstall the
fuse holder.
46
Power
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.
Options. It is
SDA-OM-E Rev H