Power Monitor 8 (PM 8)
Power Monitor 8 is a special hardware platform for the simultaneous long-term testing of up to 8 speakers. The hardware hosts a high performance digital signal processor for demanding calculations and accurate 24 Bit AD/DA converters with a sampling frequency of up to 96 kHz. The Power Monitor 8 can be operated as a stand-alone unit by using the key pad and the display. Connecting a computer via the USB interface, the computer software dB-Lab and several measurement modules can be used to control the unit and to visualize the results. In addition to the 8 channel speaker monitoring, the hardware provides a two channel line (XLR) in- and output.
- Special hardware for power testing
- Eight channel speaker monitoring
- Voltage (< 240 V)
- Current sensor (< 50 A) without additional serial resistor
- Sampling rate up to 96 kHz
- Stand-alone and PC-controlled operation
- Fast, hot plug USB interface
- Large internal memory for long term tests
- 19” / 2U rack mountable
Specification
Measurement Modules running with PM8 hardware:
Standard Measurements
- Accelerated life and power testing
- Voice coil temperature
- Thermal parameter measurements
- Thermal analysis and heat transfer
- Voltage and current
- Electrical input power
- Transducer nonlinearities (curve shape)
- Small signal lumped parameters
- Transducer nonlinearities (curve shape)
- Single-valued nonlinear parameters
Components included in the PM8 package
- Power Monitor hardware
- 8 High Precision Speaker Cable (true 4 wire)
- 1 Amplifier Cable
- 1 USB Cable
- 1 power supply with power cable
- user manual in English language
The figure illustrates the power testing of 8 devices under test by using a Power Monitor 8 in stand-alone operation.
