Front Panel Control And Indicators - XTE Electronic Digital Technology XTDT3200 User Manual

Front panel control and indicators

1. Holes for the assembly
2. Standard rack handles
3. Input attenuators
A precision attenuator for every channel with 21
positions allows you to tune the amplifiers level for
every channel.
Attention: when using a mono in bridge
both level attenuators A-B (C-D) should
be set to the same position. Please set
them to position 0 dB.
4. Signal bar LED
Every channel has a LED bar that shows the input
signal level.
Green LED shows the presence of a signal and
level -20dB, yellow – 10dB. Respectively: 0.1%,
1%, and 10% of maximum power.
5. Clip/Limiter LED
Every channel has a LED that lightens at clip point
and at the limiter intervention.
6. Protection LED
Protection LED that lightens when the load
voltage is under 1 Ohm or the amplifier output
has been short-circuited.
Fig.2a Front panel XTDT3200 XTDT3800
Fig.2b Front panel XTDT4800F XTDT6000F
7. Exp LED
It indicates that an optional expansion board has
been inserted.
8. Hi-Temp LED
It will start flashing
temperature starts increasing. At 60ºC the Hi-
Temp LED will start flashing and the output power
will be gradually reduced. At 75ºC the Hi Temp
LED will remain lit and A-B (C-D) channels will go
into mute until the temperature reaches normal
level, resetting is automatic.
Attention::
occurs due to inadequate ventilation
clearance, please check thoroughly the
amplifier installation.
9. Active LED
It lights to show that the amplifier is on and runs
properly.
10. Starting up push button
A soft-start system limits absorption when starting
up.
11. Ventilation grid
Grid with sponge filters for proper ventilation of
the amplifier and to prevent dust infiltration.
Attention: Do not block the ventilation
entries.
when the dissipator
this condition usually