10 Operating and Measurements
Chart Recording/Datalogging
056-652, Rev.D 1100/2100 SLM models
Chart Recording/Datalogging
The model 1100 has a DC output that is linearly related to the decibel reading on
the LCD display by 16.7mV/dB (1V/60dB).
This output, capable of driving up to 100 feet of shielded or twisted pair cable, is
intended for use with a 0 to 1 volt DC input chart recorder or data acquisition
device that has a high input impedance. The output impedance is 1000 ohms.
Chart recorder input impedance may cause loading of this output, which should
be taken into account. Multiplication factors for the above numbers are given
below for various chart recorder input impedances.
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