Time Axis; Display; Function - YOKOGAWA DL7440 User Manual

17.4 Time Axis

Item
Time axis range
1
Time base accuracy
1
Time axis precision
External clock input
(EXT CLOCK IN)
1 Under standard operating conditions (see section 17.12) after the warm-up.
2 1 digit is the amount of time that cannot be determined due to sampling error.

17.5 Display

Item
Display
Display screen size
Total number of pixels*
Display resolution of the
waveform display
* Liquid crystal display may include few defective pixels (within 20 ppm with respect to the total number of pixels including RGB).
There may be few pixels on the liquid crystal display that do not turn ON all the time or remains ON all the time. Note that
these are not malfunctions.

17.6 Function

Acquisition and Display
Item
Acquisition mode
Sampling mode
Record length
Zoom
Display format
Display interpolation
Graticule
Auxiliary display ON/OFF
X-Y display
Accumulation
Snapshot
Clearing traces
17-4
Specifications
1 ns/div to 50 s/div (when the record length is greater than or equal to 10 kW)
1 ns/div to 5 s/div (when the record length is equal to 1 kW)
±(0.005%)
±(0.005% + 50 ps + 1 digit)
Connector type
Maximum input voltage
Input frequency range
Sampling jitter
Minimum input amplitude
Threshold level
Input impedance
Minimum pulse width
Specifications
8.4" color TFT LCD monitor
170.9 mm (width) × 129.6 mm (height)
640×480
500×384
Specifications
Select from 4 acquisition modes: normal, envelope, averaging, and box average.
Switch between realtime sampling and repetitive sampling at some of the time axis settings.
1 kW, 10 kW, 50 kW, 100 kW, 250 kW, 500 kW, 1 MW, 2 MW, 4 MW, 8 MW, and 16 MW (8
MW and 16 MW are available only on the 16 MW memory model.)
Expand the displayed waveform along the time axis (up two locations using separate zoom rates)
Split display of analog waveforms (1, 2, 3, 4, 6, and 8 windows (1, 2, 3, 4, and 6 windows on
the 4-channel model) and a logic window for logic waveforms (optional).
Select interpolation OFF (dot display of sample points), sine interpolation display, linear
interpolation display, or pulse interpolation display.
Select from three graticule types.
Turn ON/OFF the scaled values and waveform labels.
Displays two X-Y waveforms of XY1 and XY2.
Accumulates waveforms on the display. Select persistence mode or color grade mode.
Retains the current displayed waveform on the screen. Snapshot waveforms can be saved
and loaded.
Clears the displayed waveform.
2
BNC
±40 V (DC+ACpeak) or 28 Vrms when the frequency is 10 kHz
or less.
40 Hz to 20 MHz (continuous clock only)
±1.25 ns or less
0.1 V
P-P
±2 V (resolution is 5 mV)
Approx. 1 MΩ and 22 pF
10 ns or more for high and low.
IM 701450-01E