Front Panel Controls And Indicators - Crown I-T5000 HD Operation Manual

3 Operation

3.4 Front Panel Controls and Indicators

Many of these functions can be disabled using
Blackout Mode (a selection in the Advanced
Menu, Section 4.2.3).
A. Cooling Vents
Front-to-rear forced airflow through foam dust filter
B. LCD Control Screen
Integrated LCD with white backlight, controls
ampli fier setup and operation.
The LCD Control Screen and its controls let the user
adjust the amplifier's attenuation and muting,
con figure the amp, set up and view error monitoring
(such as temperature and load supervision), and
recall DSP presets. The presets allow the user to
quickly reconfigure the amp for various applica tions.
C. Power Switch
Push-on/push-off switch glows green when AC
power is present at the power cord and the amplifier
circuit breaker is in the "on" position.
page 12
D. USB 2.0 Connector
Accepts a USB drive to transfer presets from the
drive to the amplifier DSP, and vice versa.
E. Fault Indicator
Red LED, one per channel, flashes when the
ampli fier output channel has stopped operating.
Usually this means that the amplifier must be
serviced.
F. Thermal Indicator
Red LED, one per channel, illuminates when the
channel has shut down due to thermal stress or
overload.
G. Clip Indicator
Red LED, one per channel, illuminates when the
channel's output signal reaches the onset of audible
clipping. The Clip Indicator also will illuminate
dur ing Thermal Level Control (TLC) limiting. The
Clip Indicator can be turned of during Blackout
mode.
Figure 3.1 Front Panel Controls and Indicators
H. Level Controls (Encoders)
Speed-sensitive, 0.5 dB steps, range 0 to –100 dB.
These two knobs affect the Channel-1 and
Channel-2 output levels. They also select Menu
items and adjust parameter values that are displayed
on the LCD control screen.
I. Menu/Exit Button
"Menu" enters the main menu. "Exit" leaves the
menu.
J. Prev Button
Selects the previous item in the menu.
K. Next Button
Selects the next item in the menu.
L. Signal Indicators
These can be disabled during Blackout mode. Three
green LEDS per channel indicate the ampli fier's input
and output signal levels. From top to bot tom the
LEDs are
–10 dB: amplifier output is 10 dB below clipping.
–20 dB: amplifier output is 20 dB below clipping.
Signal: selected input signal is above –40 dBu.
I-Tech HD Series Power Amplifiers
M. Ready Indicator
Green LED, one per channel, illuminates when the
channel is initialized and ready to produce audio
out put. Indicator is off when the channel is set to
standby mode via System Architect or in Blackout
mode.
N. Power Indicator
Blue LED indicates amplifier has been turned on and
AC power is available. The LED will flash when the AC
line voltage is 15% above or below the nominal rated
range. This indicator can be turned off in Blackout
mode.
O. Data Indicator
Yellow LED indicates network data activity. Data
indicator flashes only when the amplifier is polled for
data, or is polled to see whether it is online. This
indicator can be turned off in Blackout mode.
P Bridge Mode Indicator
Yellow LED illuminates when the amplifier is set to
Bridge-Mono mode.
Operation Manual