Klein + Hummel
Operating Manual KPA Series
English
16
Idle Mode
The idle mode function is a power saving feature. By activating it, if the amplifier doesn’t detect the signal for the
user defined amount of time, the output stage is turned off, saving about 40 W of power per channel. This means
reduced heating, longer amplifier and fans life, and, especially for fixed installation permanently turned on, a lower
electricity bill.
DSP Settings
This sections is implemented if optional DSP board is present.
Bar meters
In the Bar meters screen you can choose if the LED bars operate as output voltage meter and LCD bar in the main
screen as output current meter (by selecting ”LED Volt, LCD Curr), or vice versa (by selecting the other item).
Output meters
In the Output meters screen you can view the values of the output signal for CH1 and CH2. Furthermore, the
impedance of the load is showed in the bottom line of the screen (see
figure 19
). Minimum of output voltage for
impedance measurements is 10 Vrms, measurements values are stored into logbook. Time between single
impedance measurements can be up to several minutes depending on program signal. Output power is shown as
maximum value every 200 ms. In "C1+2" mode the screen shows the output values in bridge connection.
figure 19
Temperature
In the Temperature screen you can view the historic temperature diagram of the last four hours of the final current
use in the range from 10 to 90°C; in the bottom-right side of the screen there is the present value
(see
figure 20
).
figure 20
Mains meters
In the Mains meters screen you can view the voltage and the current of the mains (see
figure 21
).
figure 21
0 Arms
0 Vrms
0 Watt
Ma ins meters
170 Vrms
20 Arms
