Triplett 9320-A - Manual (Page 32)

31 Triplett Model 9320-A
If the V position is selected, set the meter to AC volts by pressing the SELECT
button, then connect the test leads to the signal to be measured. Allow the meter
to autorange and measure the voltage of the input signal, and then press the Hz/
DUTY button to select Frequency measurement or Duty Cycle measurement. The
Hz annunciator will display on the LCD in the Frequency measurement mode , or
the % annunciator will display in the Duty Cycle mode.
In the Frequency mode, with the leads open, the display usually displays “0.000Hz”.
In the Duty Cycle mode, the meter usually displays “000.0%”.
Notes:
Due to the high sensitivity of the Frequency and Duty Cycle measurement mode,
signals containing “noise” may produce erroneous readings on the meter. For
example, while a “clean” 120VAC power line will typically measure 59.99 or
60.00Hz, and 50.0% Duty Cycle, a “noisy” 120VAC power line may produce er-
ratic readings as high as several kHz.
9.7.2 Measuring Frequency and Duty Cycle with the Clamp-On
Remove test leads from the meter. Make certain that the annunciator on the
display is not visible. If it is visible, press the D-HOLD button to turn it off.
Set the FUNCTION switch to the Hz Clamp-On position. The Hz annunciator will
be displayed on the LCD, indicating that the meter is in the Frequency measurernent
mode. Following the proper precautions, clamp the jaws of the 9320-A around the
current carrying conductor whose frequency is to be measured. The current to be
measured must be at least 3 Amps (lower currents will not be measured). Read
the Frequency on the LCD. To measure the Duty Cycle, press the Hz/DUTY but-
ton. The % annunciator will display on the LCD
9.8 Measuring Temperature
WARNING!!!
Do not apply voltage or current to the meter when it is set to °C / °F
Do not attempt to measure the temperature of electrically “live” surfaces.
Doing so may result in damage to the meter or injury to the user.
Set the FUNCTION switch to ° C / ° F. Make certain that the annunciator on the
display is not visible. If it is visible, press the D-HOLD button to turn it off.