VTL S-400 II series Owner's Manual page 25

4. Locate the Power rocker switch on the lower right hand corner of the amplifier's rear AC/Fuse panel and
press the rocker power switch up to the On position. After a 10 second waiting period as indicated by the
scrolling periods on the display window, the front panel displays a steady ----, indicating that the unit is now
in Standby mode and ready to receive the power on command.
At this point the amplifier is also ready to receive and process ASCII text commands through the rear RS-
232 port. The RS-232 commands are listed next to the front panel commands in this manual, and for further
explanation and a summary of all of the RS-232 commands available and the expected responses see the
section in this chapter on Remote Control options.
If the Display Window shows either a flashing ---- or a numeric value and one of the red back-lit text
indicators is turned on indicating some type of fault in the system, the amplifier cannot be powered on. In
this case please refer to the Fault Indications section in this chapter and contact your authorized VTL dealer
or the factory for assistance.
Front Panel indication: Standby mode
5. If the display shows the steady ----, the amplifier can be powered on via one of the following methods:
The red POWER button on the front panel
An external trigger source, (such as one of the ones on the VTL TL7.5 Reference Line preamplifier)
connected to the amplifier's 12V TRIGGER connector on the rear panel
Remote turn on via the IR receiver port. (There is no remote wand supplied with this unit, so please
consult with your authorized VTL dealer on the installation and programming of an appropriate IR
emitter device.)
Power on command issued by a computer or other remote control system connected to the RS-232
port of the amplifier. (Please consult with your authorized VTL dealer on the installation and
programming of the RS-232 interface to this amplifier.)
S-400 Amplifier Owner's Manual
VTL
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