Crown XTi 1002A, Operation Manual

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XTi 2 . 5
系列功率放大器
XTi 2 . 5 Series Power Amplifier
17
Operation Manual
操作手册
延时
在信号处理的过程中需要使用
50 msec
的延时来调整扬声器的时间。您还可以在软件中以各种计算格
式来设定延时，例如秒、英尺、米等。
峰值压限器
带用户可调节启动、释放和阈值
( 0 . 1 dB
分辨率
)
的前反馈输出压限器，和集成反馈压限器，用来减少
功放削波。
高级温度控制
能可让您根据现场应用调节风扇转速。有如下选择：
• 常规
•
提前
•
全速
用户可使用前面板的按键或软件来改变风扇模式。默认模式是常规，此模式适用于大多数应用场
合。提前模式可使风扇在较低温度下就运行，全速模式可使风扇全速转动。在较浑浊的空气环境
中，我们不推荐您使用全速模式。
高级监控
此功能可让您透过软件看到电源温度和交流线路电压。交流线路电源是从功放轨道电压而来，几乎
相当于交流线路电压。这样可让您监控功放的健康状态状态，提供故障显征。
前面板锁止
如需锁止前面板上的按键，同时按下 Prev 和 Next 按键，直到显示屏显示“ locked （锁止）”。此时旋钮
（衰减器）仍工作。如需解锁，再次同时按下 Prev 和 Next 按键，直到显示“ unlocked （解锁）”。
前面板也可以通过软件的主菜单来锁止和解锁。然后一旦使用软件来锁止，也只能使用软件来解
锁。您无法从前面板上来解锁。旋钮（衰减器）仍工作。
7 .
集成处理功能
（接上一页）
Delay
There is up to 50 msec of delay available in the signal processing for time aligning your speakers. The software allows you to
enter the amount of delay needed in the form of seconds, feet, or meters and does the calculation for you.
PeakX Plus Limiter
Feed-forward output limiter with user-adjustable attack, release and threshold ( 0 . 1 dB resolution), plus integrated feedback
limiter to minimize amplifier clipping.
Advanced Thermal Control
In this section, you can tailor the fan speed to specific applications. You have the choice of the following modes:
• Normal
• Early
• Full-Speed
The fan mode can be changed using the front panel buttons at start-up or in the software. The default mode is normal and
should work fine for most applications. Early mode turns the fan on sooner at a
“
lower
”
temperature, and Full-speed
mode turns the fan on full-speed full-time. Full-speed mode is not recommended for
“
dirty
”
environments.
Advanced Monitoring
This feature allows you to have software visibility of both the Power Supply Temperature and AC Line voltage. AC Line
voltage is
“
derived
”
from the amplifier rail voltage and is an approximation of the AC line voltage. This allows you to
monitor the health of your amplifiers and provides for troubleshooting.
Front Panel Lock-Out
To disable or lock the buttons from the front panel, hold the Prev and Next at the same time until the screen says
“
locked
”
. The rotary knobs (attenuators) will still operate. To unlock, hold Prev and Next until the screen says
“ unlocked ” .
The front panel can also be locked out from the software as well from the main panel. However once it is locked in the
software, it can only be unlocked from the software. You cannot unlock from the front panel. The rotary knobs (attenuators)
will still operate.
7. Integrated Processing Features
(continued)