In the base band design stage of the cellular phone, it is necessary to control the complex timing to reduce power consumption and observe multi-channel input/output of mixed analog and logic.

The cellular phone controls the complex timing in the base band. To test if the internal control works as designed, the long memory Digital Oscilloscope DL7440/DL7480 uses long duration high-speed sampling to measure the displacement waveform of analog signals such as receiving signal electric field levels, logic control signals such as timing, and current during waiting. Color display makes it easier to distinguish mixed analog and digital data. The History memory enables capturing of rare phenomena, and the ZOOM function enables observation of details in long data and printing of the zoomed image. Also data saving on FD and PC card is available.

- Pattern search
- Eight analog input channels (DL7480)
- 16-bit logic input
- History search
- Data saving(3.5 FDD, Zip^® or PC card)
- Zoom function
- Color display

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