Microphone Box (230 V, 50/60 Hz)

Description All-purpose dual-channel amplifier for long or short microphone probes. Particularly suitable for use with microsecond counters in experiments for determining speed of sound, including 12 V AC plug-in power supply. Both channels can be individually switched between the perating modes, “Signal” for connecting an oscilloscope, “Level” for connecting a voltmeters and “Pulse” for connecting a microsecond counter. The trigger threshold for the pulse depends on the gain of the pre-amp, which is adjustable. Band width: 10 Hz to 42 kHz Gain: 20 to 70x Output impedance: 1 k? Output signal: Switchable between Signal, Level and Pulse Signal: 0 – 14 Vpp Level: 0 – 7 V DC Pulse: Low: 0 V, high: 8 V DC, length: 150 ms Inputs: 3.5 mm jack plugs Outputs: BNC socket Power supply: Via 12 V AC, 500 mA plug-in power supply Dimensions: 100 x 75 x 35 mm Weight, including power supply: 450 g approx. Required: 1017342 Microphone probe, long 4008308 Mikrofonní sonda, krátká