User manual

Page 32 of 128 E-PAC Version 3, User Manual
Power Supply monitor
Frequency Generator menu
Buzzer Function
IMPORTANT!
ImpErrHF
A numerical value indicating the number of impedance faults in the
HF section of the connected loudspeaker (Load Monitoring).
Proportionate temperature ranges
These display the proportion of 'On Time' the E-PAC has been
operated within the temperature ranges listed.
Power Supply
The firmware version of the switched mode power supplys micro
controller is listed on the right hand side of the top line.
Mains
The value of the mains voltage power supply to which the E-PAC is
connected in volts. The typical accuracy is 2 %, however the value
is dependent on the quality of the mains voltage. (see section 2.5.
protection circuits/mains voltage supervision, on page 15,
paragraph 4).
Power
Power consumption in watts. The typical accuracy is 5 %.
Frequency Generator
The frequency generator is a sweepable sine wave or pink noise
generator. The generator serves as a simple test of the
functionality of loudspeakers or for finding room resonances. The
generator is in the signal path after the delay and before the
loudspeaker equalization (refer to chap. 2.1 on page 11). The test
tone will sum with any input signal present.
NOTE:
The frequency generator is used to provide the Pilot
Signals for the load monitoring function. When using 'Load
Monitoring' with Pilot Signals the frequency generator function is
not available.
Mode
off:
Generator function is switched off.
Sin:
Selects the sine-wave generator.
Pink:
Selects the pink noise generator.
Level
Level of the frequency generator in dBu, covering a 63.5 dB range
from 57.5 dB to +6 dB in 0.5 dB steps. The level value
corresponds to the output level of typical signal generators needed
to produce an equal output level from the E-PAC.
Frequency
Frequency adjustable over the range 10 Hz to 20 kHz in 1 Hz
steps.
Buzzer
Acoustical signal for error messages in conjunction with the 'OVL'
display [7] ('Error-LED' - see section 2.9.7, on page 22).
on/off
Master switch for turning the buzzer on or off.