407738

      The 407738 measures and displays sound pressure levels in dB (decibels) from 26 to 130dB in six measurement ranges. The microphone can be removed and remotely stationed for convenience. In addition to the LCD numerical displays, a bargraph is included for quick and easy viewing of sound level changes. 407738 features include selectable Frequency Weighting ('A' and 'C'), selectable Response Time (Fast and Slow), Max Hold, and a 99 reading storage utility.
      Next , 407738 meter description gives you for better knowing. Microphone is electret condenser. Microphone collar is unscrew to remove microphone. It has LCD display. Push-buttons of 407738 includes power button, A,C buttons(which are used to set the frequency weighting), FAST, SLOW buttons ( which is used to set the response time), MAX button whic hsi uesd to  selects MAX, MIN or current measurement and also used to test the FAST/SLOW characteristics), MEM button ( Pressing to store a data set in memory),READ button(Pressing to read the stored data sets), Up and Down Arrow buttons(which is Used to select measurement ranges; also used to scroll through the stored data sets in the MEM (memory) mode). CAL potentiometer is uesd For calibration, etc.
      The meter 407738 can be powered by one 9V battery or by the specified optional AC power adaptor. Before inserting or replacing the battery and before connecting the AC adaptor, be sure to turn off the meter.The Model 407738 is equipped with an analog output feature. The analog output jack is located on the meter's right side. AC and DC analog signals are available from the provided jack (refer to the 3.5mm stereo phono plug diagram for wiring).
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