Power Studio PWM-14000, Инструкция пользователя

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10
Precautions Introduction Front Panel Rear Panel
Operation and Performance
Figure 9
V peak to Vrms table
The values for VPL are displayed as maximum Voltage
Peak. To translate Voltage Peak into Vrms, you must
divide the Voltage Peak values by 1.41(see table). The
VPL allows you to set the correct maximum output peak
power for optimum performance with the connected
speakers. The correct setting depends on the system
type and the specific load connected to the channel.
Since each channel can be configured to deliver either
very high voltage peak power or high current draw at low-
impendances, it is important to set the VPL correctly.
If you choose a lower VPL setting, you only reduce the
maximum output voltage. At the same time, this allows
more current headroom for low-impedance loads. The
amplifier thus runs at higher efficiency, with a
significantly reduced risk of going into thermal
protection.
The Current Peak Limiter (CPL) ensures that the amplifier will not be damaged by forcing
the amplifier to deliver current levels to the outputs that exceed the physical limits of the
transistors. The CPL keeps the amplifier within the Safe Operating Area (SOA).
The CPL is non-adjustable and has different limit values depending on model type.
CPL activity is indicated by illumination of an red LED for each channel on the front panel.
A steadily illuminated red CPL LED (with MUTE illuminated) indicates a short circuit
situation (or very low-impedance ). The output will mute for 6 seconds before measuring
the output impedance again. This will continue until the short circuit is fixed, at the same
time the output will automatically un-mute. An input signal must be present to allow
detection of short circuit or low-impedance conditions.

NOTE

The problem can be solved by checking input and output cables and
examining the state of the loudspeaker load. If there is no short circuit
present, then the condition may be rectified by lowering the VPL or input
levels.
Protection, faults and warnings
The PWM-14000 amplifier incorporates a sophisticated and comprehensive set of
protection features. Faults and warnings are indicated on the front panel.
PWM-14000
V peak V rms
195
170
140
116
100
80
66
54
138
121
99
82
71
57
47
38
Output Current Peak Limiter (CPL)
AMPLIFIER
PWM
-
14000