17 Operation with a Data Recorder
Description
The Model 8718B provides an output signal that can be connected to a data recorder to provide a continuous record of measurement over an extended period of time. The recorder output is available via the smaller of the two jacks located on the left side of the meter. The output is always on.
Output Level
The recorder output ranges from 0.0 volts to 3.0 volts. The level corresponds directly with the indication on the bar graph of the display. Under normal conditions, the bar graph is in the AUTO mode which results in the bar graph using three 10 dB ranges to cover the entire dynamic range of the probe, which is typically 30 dB. Thus, the recorder output would produce a sawtooth pattern if the measured field strength was slowly increased in a linear fashion over the entire dynamic range of the probe. For example, the recorder output level with the 8718B bar graph range set to AUTO used with a probe with a
Chapter 17 Operation with a Data Recorder | 99 |