Fluke 99B Telescope User Manual


 
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HOLDING A STABLE MEASUREMENT
(TOUCH HOLD
)
The Touch Hold function captures the next stable
measurement and a beep indicates that a stable
measurement has been made. When the Touch Hold
function is turned on, the numeric display is frozen (held)
until a stable measurement is detected. Stable
measurements are defined as:
Within +/-100 display counts for 1s.
Above 200 display counts for dc signals.
Above 300 display counts for ac signals.
Below overload (OL) in and diode test.
TOUCH HOLD appears in the top right of the display when
the function is active.
NOTE
The Touch Hold function is not available in Min Max.
Figure 4-2. The Touch Hold function
The following procedure can be used for Touch Hold:
1. Press and measure the signal.
2. Wait until the ScopeMeter test tool produces a beeper
signal to indicate a stable signal.
3. Remove the measuring leads and read the result from
the display.
4. Measure a new signal, wait for the beeper, remove the
leads, and read again.
5. Press to return to normal measurement mode.