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Reading Hold
When the [HOLD/TRIGGER] button is pressed, the most current reading may be latched and held on
the LCD until the [HOLD/TRIGGER] button is pressed again. The status of the reading hold feature
is indicated on the lower left hand corner of the LCD. An “h” indicates a hold condition. This feature
is only functional in the Continuous Trigger Modes.
One Shot Trigger
When the 1750 microohmmeter is operated in the One-Shot Trigger Mode, an “S” will appear in place
of the “h” in the LCD lower right hand corner. This symbol notates that the instrument is in the One
Shot mode and requires external triggering from the front panel, communications interface or the
BNC TTL trigger input on the rear panel.
Resistance Range and Reference Current
There are 19 possible resistance and reference current range combinations that the 1750 will operate
under. The present reference current level is displayed on the bottom of the LCD. Once the user
becomes more familiar with the display, the actual resistance and reference current combination can
be determined by observing the placement of the decimal point on the reading and the indicated
reference current level. When the 1750 is in AUTO RANGE mode, then the AUTO RANGE LED on the
right hand side of the front panel will be illuminated.
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