NARDA 8718B, User Manual

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99 Chapter 17 Operation with a Data Recorder
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 full-scale
measurement range of 100 mW/cm, such as the Model 8723D,
would follow the table on the next page.