YOKOGAWA DL750 User Manual

5-53
IM 701210-05E
Horizontal and Vertical Axes
5
Setup Items for Each Measurement Item
When the Measuring Rotation
• Pulse/Rotate
Set the number of pulses per rotation in the range of 1 to 99999 pulses.
When Measuring the Duty Cycle or Pulse Width
• Measure Pulse
Set the measurement pulse to Positive or Negative.
• When Measuring the Duty Cycle
Positive: Measures the ratio of the positive pulses.
Negative: Measures the ratio of the negative pulses.
• When Measuring the Pulse Width
Positive: Measures the width of the positive pulse.
Negative: Measures the width of the negative pulse.
Tp
Ta
Tb
Tp
Ta
Tb
• When Positive is selected
• When Negative is selected
Pulse width:
Measures the width of Tp
Duty:
Measures Ta/Tb
Pulse width:
Measures the width of Tp
Duty:
Measures Ta/Tb
Precautions to Be Taken When Measuring the Duty Cycle
The output is set to 0% or 100% when either of the conditions below is met when
measuring the duty cycle.
• When there is no pulse input after a time equal to 4 times the period of the pulse
that was input immediately before.
• When there is no pulse input for 20 s.
When the measurement pulse is set to Positive, the output is set to 0% when the
pulse input is low when the condition is met and 100% when the pulse input is high.
When the measurement pulse is set to Negative, the output is set to 0% when the
pulse input is high when the condition is met and 100% when the pulse input is low.
T: pulse period
The output is set to 0% when a time equal to
T×4 or 20 s elapses after the last pulse was input.
0% (when the measurement pulse is set to Positive)
Status when the condition is met: Low
When Measuring the Power Supply Frequency
• Center Frequency
Set the center frequency to 50 Hz, 60 Hz, or 400 Hz.
When Measuring the Pulse Integration
• Unit/Pulse
Set the physical amount per pulse in the range of –9.9999E+30 to 9.9999E+30.
• Unit
As necessary, enter the unit of pulse integration to be displayed on the screen using
up to 4 characters.
• Over Limit Reset
Select ON to reset the pulse count automatically when the range is exceeded. Select
OFF to not reset the pulse count. The default setting is OFF.
• Reset
To reset the pulse count manually, select Exec.
5.19 Setting the Frequency (Number of Rotations, Period, Duty Cycle, Power Supply Frequency,
Pulse Width, Pulse Integration, and Velocity) Measurement

YOKOGAWA DL750 Specifications

General

Brand	YOKOGAWA
Model	DL750
Category	Measuring Instruments
Language	English