ETS-Lindgren HI-1710 Microwave Measurement System (Archived) - Manual (Page 16)

HI n 1710 Manual Page — 11
Default Settings:
Peak Hold - OFF
Filter - FILTER 1 (Slow)
Range - 0-1 mW/cm²
Display - Two Decimal Places
Range
The HI-1710 can be set to any one of four ranges by
pressing either of the range select switches. The range
affects only the Bar Graph Display and the Analog
Output; the digital display will always indicate any value
between zero and 10 mW/cm
2 . Pressing the right range
switch (>) changes the instrument to the next higher
range; each depression of the switch moves one range.
Pressing the left range switch moves the range
downward.
Moving one step beyond range four (10 mW/cm 2 full
scale), sets the instrument to AUTO-RANGE. In this
mode, the instrument adjusts the range automatically for
the best reading. With no RF input, the instrument will
shift to the 0-1 mW/cm
2 scale. When the displayed value
exceeds 95% of full scale, the instrument automatically
selects the next higher scale. While the digital reading
will always indicate any value up to 10 mW/cm
2 , the Bar
Graph display will change to reflect the correct
percentage of the newly selected range. In auto-range,
when the displayed value drops below 30% of full scale,
the instrument selects the next lower range.
Note: When using the Auto-Range feature and Peak Hold
together, the highest range selected is locked in. This is
because the peak segment on the Bar Graph display is
located as a proportion of the highest auto-selected
range. When the instrument is zeroed, the auto-range
Archived 4/2/10