Parameters for Impedance Measurement
Element
Default
Range
Description
LO
LO, HI
GEN. LEVEL sets the generator level for speaker impedance
testing. The generator level LO corresponds to -10dBu (245
mV), the generator level HI corresponds to 0dBu (775 mV).
CAUTION: Extremely high levels during measurement may
result in seriously damaging connected components.
20 Hz
20 Hz...20
kHz
SWEEP START sets the start frequency of the sine-sweep
signal for speaker impedance testing.
20 kHz
20 Hz...20
kHz
SWEEP STOP sets the stop frequency of the sine-sweep
signal for speaker impedance testing.
Clicking the START TEST soft-key launches the speaker
impedance test. The generated sine-sweep signal sweeps
over the previously defined frequency range. The graph of the
measured impedance values is indicated in the Load plot
display. Clicking this soft-key again cancels the test at any
time.
10%
5%...50%
Clicking the SET REF. CH. A and/or SET REF. CH. B soft-key
saves the last test as reference. Clicking the CLEAR REF. CH.
A and/or CLEAR REF. CH. B soft-key clears the corresponding
reference. TOLERANCE defines the allowable deviation of the
impedance graph. Actual measured test results and saved
tolerance ranges are being compared during system check. A
fault message is displayed if any point of the actual
measurement falls outside of this tolerance range. The
tolerance range is graphically displayed as spread in the
corresponding color that surrounds the reference graph.
Supervision & Test
The Supervision & Test Dialog integrates functions for testing and monitoring power amps.
You can check control input states and trigger control outputs. A testing generator that provides sine, pink noise and
white noise signal output allows acoustical testing. Status indicators for general power amp operation, the two
amplifier channels and the load connected, indicate whether everything is okay or where failures occurred. You have
the option to choose, which errors are combined and indicated in a general fault message.
A click on the Supervision & Test tab selects the page while in the Setup & Control Window.
IRIS-Net
REMOTE AMPLIFIER | en 141
Bosch Security Systems B.V.
User Manual
2017.05 | 3.20 | F.01U.119.956