Four-channel digital scope sends its own e-mails

The Yokogawa DL1740 SignalExplorer is a compact 4-channel digital oscilloscope that combines a sampling rate of 1Gsample/s, an analogue bandwidth of 500MHz and a memory length of 1Mword.

New from Yokogawa Martron, the Yokogawa DL1740 SignalExplorer is a compact 4-channel digital oscilloscope that combines a sampling rate of 1Gsample/s, an analogue bandwidth of 500MHz and an exceptional memory length of 1Mword.

Despite its high-range performance the new instrument, which is small enough to occupy an A4 size footprint on a test bench and weighs only 5.5kg, is priced as a mid-range model.

The 500MHz bandwidth is achieved using a dedicated single-chip input amplifier, and the very fast screen update rate of 30 times per second (even at 1MW record length) results from the use of a dedicated high-speed data-processor set known as the Data Stream Engine.

Both these innovations are based on components designed in-house by Yokogawa, as are the high performance A/D convertors.

The combined effect of these new circuits is a big reduction in component count, very low power consumption, minimal heatsink requirements and therefore significant cost savings.

The DL1740 uses a 6.4in colour TFT liquid crystal display.

The repetition frequency of waveform data can be determined by using brightness, thus emulating analogue oscilloscopes, but with the additional capability of frequency of occurrence distinguished by colour.

The instrument is equipped with USB compliant interfaces as standard, allowing keyboards and USB printers to be connected.

The ability to use a keyboard has greatly improved the instrument's ease of use and screen images from the colour display can be easily output to a colour printer.

The Waveform Viewer software provided allows the user to exchange waveform data and screen images between the oscilloscope and a PC.

Other interfaces include GP-IB, RS-232 and an optional SCSI link.

A 100BaseTX Ethernet interface is available for LAN compatibility, and an e-mail transmission function will provide 'go/no-go' determination results and error messages, as well as measurement data at designated time intervals sent to a specified e-mail address.

A 250Mbyte Zip drive meets the need for large-capacity built-in storage, necessary to take full advantage of the long memory capability of the oscilloscope.

Other facilities include: history memory; history search; 'search and zoom'; dual-zoom; auto-measure; and statistical measurements.

One novel function allows the user to designate two areas of the waveform for waveform parameter measurement and calculate both together.

An image save key allows screen image data to be saved with one-touch operation to the internal floppy disk or Zip drive, via SCSI to an external media, or via LAN to a network drive.

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