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5-27
IM 701210-05E
Horizontal and Vertical Axes
5
5.14 Setting the Time Base (Internal Clock/External Clock)
CAUTION
Applying a voltage exceeding the maximum allowable input voltage to the TRIG
OUT/EXT CLK IN terminal may damage the input section.
Setting Pulse/Rotate
You can specify the number of pulses of the external signal that is to correspond to one
mechanical rotation (one cycle).
Range of the number of pulses: 1 to 24000
Notes When Sampling Using the External Clock Signal
• You cannot set the acquisition mode to envelope or box average.
• You cannot display waveforms in roll mode.
• No function is provided for frequency-dividing the clock signal.
• Since the time axis setting cannot be changed, change the record length setting or
zoom in on the time axis if you want to change the display range of the time axis.
• The time measured by the cursor measurement or automated measurement of
waveform parameters is expressed in terms of the number of pulses of the clock
signal. No unit is displayed.
• Realtime recording to the internal hard disk cannot be selected.
• Saving data using the dual capture function is not possible.
• The following trigger settings are invalid.
• Trigger delay
• Hold off
• B > Time, B < Time, and B Time Out trigger
• Period trigger
Maximum Sample Rate of Each Module
If the sample rate of the DL750/DL750P is set higher than the maximum sample rate of
the module, the data is updated only at the maximum sample rate of the module.
Consequently, all of the data within the data update interval of the module are the same
data.The maximum sample rate of each module is as follows:
Maximum Sample Rate of Each Module
Module
During Internal Clock
During External Clock
701250/701255:
10 MHz
1 MHz
701251:
1 MHz
1 MHz
701260/701270/701271/
100 kHz
100 kHz
701275/:
701261/701262 (measuring voltage):
100 kHz
100 kHz
(measuring temperature): 500 Hz
500Hz
701280:
25 kHz
25 kHz
701265:
500 Hz
500 Hz
DSP channel:
100 kHz
100 kHz