MZ-RD – Multi-Zone Remote Display
Instruction 3015-5157 19
The trend graph opens with the cursor located over the most recent data point. Use the
LEFT/RIGHT cursor keys to move the cursor to different data points. Holding a key down will
cause the cursor to move rapidly across the screen. As you move the cursor position, the date
and time of that reading, along with the ppm value, are displayed at the top of the screen above
the graph. The trend graph is
automatically scaled to accommodate the largest ppm value
displayed. The ZOOM OUT and ZOOM IN options allow you to adjust the vertical scale of the
graph.
The trend data is stored on a first-in, first-out basis. After 100 trend values have been stored the
101
st
value will replace the first value stored. Therefore, in normal operation, when entering trend
mode the cursor will be located at the most recent data point. The data points to the left of the
initial cursor location will be the next most recent. The data point to the right will be the ol
dest
data point in the buffer and will be over written by the next data point.
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