Microphone Power Supply--Type PM2000
1. Uses and Features
◆ The PM2000 is a single channel power supply for preamplifiers used with externally polarized microphones. It is for general use in acoustic measurements and vibration measurements, both in the laboratory and in the productions.
◆ It can supply the preamplifier with power as well as 0, 28 and 200V polarization. It has a wide operating frequency range from about 1Hz to 50kHz. It can provide a high signal/noise ration and the special low distortion for the input analogue signal.
◆ Preamplifier Input channels: Traditional7-pin LEMO and BNC coaxial input connector for microphone preamplifier (BNC isdirectly connecting to output BNC without Polarization power)
◆ Output channels: BNC coaxial socket for theoutput signal via the power supply.
◆ Gain switches: Adjust the gain individuallyto suit for requirements and give the overload indication. Selectable gain are 0,20 and 40 dB
◆ LEDs indication: a series LEDs will indicatethe different condition, yellow for power OK, green for signal optimum and red for signal overloading
◆ Selectable gain: 0, 20 and 40dB±0.2dB
◆ Input Impedance: over than 100kΩ
◆ Output Impedance: less than 30Ω
◆ Microphone preamplifier input: 0, 28 or 200v polarization voltage
◆ Frequency response: 1Hz – 50KHz
◆ Noise: Less than －100dBV
◆ Power supply: 220V AC
◆ LED indicators:
Power OK: yellow
Signal optimum: green
◆ Dimensions: 165mm*120mm*45mm
◆ Weight: 600g