Full Product Manual

15
Capacitance
Most capacitance measurements will obtain best results with parallel mode
selected. The majority of capacitors have a very low dissipation factor
(high internal resistance) compared to the impedance of the capacitance. In
these cases, the paralleled internal resistance has negligible impact on the
measurement. There will be some cases where series mode would be used
for a capacitance measurement, or the readings will appear inaccurate.
Series mode is useful when large capacitors have higher dissipation factor
and lower internal resistance.
Inductance
Most inductance measurements will obtain best results with series mode
selected. In series mode, accurate Q (quality factor) readings can be
obtained from reading low Q inductors and ohmic losses are signicant.
There will be some cases where parallel mode would be used for an
inductance measurement, for example iron core inductors operating at
higher frequencies where hysteresis and eddy currents become signicant.
Series/Parallel Measurements
When any L/C/R function is selected, the default measurement will be
automatically selected. If the impedance is greater than 10kΩ, parallel
mode will be selected, and "Lp/Cp/Rp" will display on the LCD screen. If
the impedance is less than 10kΩ, series mode will be selected, and
"Ls/Cs/Rs" will display on the LCD. When the Parallel/Series/Right Button
is pressed, the impedance measurement will be set in series mode or in
parallel mode sequentially.
Data Hold
1. While taking a measurement, press the HOLD button to freeze the
current readings on the display.
2. While in this mode a "HOLD" symbol will appear.
3. Press the button again to resume normal operation.
Note: When the Data Hold feature is active all buttons except the power &
backlight buttons are disabled.
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REED Instruments
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