Practical Instrument Electronics 541 - Manual (Page 5)

Practical Instrument Electronics
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Page 5
Choose this function to provide a number of pulses for a set time into parts counters or totalizers.
1) Disconnect the input signal from the device to be calibrated.
2) Press and release the SOURCE/AMPLITUDE Key until TOTALIZER appears on the display.
3) Press and hold the READ/GATE TIME key to enable time adjustment. Turn the EZ-Dial knob
u to
adjust the totalize time from 1 to 100 minutes. Press and release the READ/GATE TIME or STORE/CLEAR
button to save your selection.
4) Turn the EZ-Dial knob u to select the number of pulses you would like to output with increments of 1 count.
Push down and turn for faster dialing with increments of 100 counts.
5) Connect the 541 to the input of the device to be calibrated.
5) Press the EZ-Step push-button
q like a stop watch to start outputting pulses.
The word RUN will appear on the display and the 541 display increments with each pulse while the
totalizer is running. When the selected number of seconds has elapsed the word STOP appears on
the display and the total number of pulses sourced during the time appears on the display.
Press the EZ-Step push-button q like a stop watch to stop or re-start totalizing.
Note: If you are using the Totalizer functions for over 30 minutes you should set AUTO OFF to OFF
(see Configure the Calibrator on page 3).
Calibrating Totalizers
To Convert From: To: Divide By: To Convert From: To: Multiply By:
CPM Hz 60 Hz CPM 60
CPH Hz 3600 Hz CPH 3600
CPM/CPH CONVERSIONS