Basic Diagnostic Functions - VTL S-400 II series Owner's Manual

Basic Diagnostic functions

The following basic diagnostic functions are for checking some operating parameters of the amplifier, if
desired. These parameters do not need to be checked for the proper operation of the amplifier, as the
amplifier continuously self-monitors and shuts down automatically in the event of any fault condition.
Diagnostic Function
Display Total time
The total operating time
of the amplifier, in
hours.
This function
accessible either
Standby mode
operating mode.
Total Time cannot be
cleared or reset by the
user.
Display Tube Time
A resettable time log that
the user can use to tell
the amount of time that
a set of tubes has been in
the amplifier.
This function
accessible either
Standby mode
operate mode.
Clear Tube Time
S-400 Amplifier Owner's Manual
VTL
Procedure
When user presses the TOTAL
TIME button, the LED above
the button turns on and the
Display Window indicates the total
powered on running time of the
amplifier, in hours. A decimal
is
point is added to the first display
in
digit when the total time becomes
or
five digits. For instance at 10,000
hours, the display indicates 1.000
A decimal in the second digit
indicates 6 digits, ie 100,000
hours, and so on.
RS-232 command:
>TOTLTIME
When user presses this button,
the LED above the button turns
on and the Front panel display
indicates the time since last reset,
in hours.
A decimal point is added to the
display when the Tube Time
is
becomes greater than four digits.
in
For instance at 10,000 hours, the
or
display indicates 1.000
RS-232 command:
>TUBETIME
The user can reset the TUBE
timer to track component usage,
usually after each retubing, by
holding down Tube time +
Temp/Reset
simultaneously for 15 seconds,
until the Display Window shows
(--) to indicate that the clear
command has been received.
Indication
button
34