The M520 Oscilloscope Series is part the ETC Measuring Lab 3 (EML3) line. The series consists of three dual-channel USB oscilloscopes compatible with USB 2.0 and USB 1.1 interface. Each scope is connected to a computer using standard USB 2.0 cable and is powered through USB, so no external power supply is needed. That makes an M520-series scope extremely portable, given their size of just 106 x 163 x 35 mm (excluding connectors and feet). Their maximum power consumption of only 2.25W makes them usable with battery-powered notebooks.

M520 Oscilloscopes are available with 60, 120 or 150 MHz bandwidth and 8K per channel internal storage. A detailed table of the differences between the three models is found below.

All devices of the M520 Oscilloscope Series offer simple and intuitive installation and operation, and they can adapt to any screen resolution from 800 x 600 upwards. They have two vertical channels with 8-bit resolution and offer a deflection factor from 10mV/div to 5V/div in 1-2-5 steps. The device inputs are accessible via BNC connectors and are compatible with standard probes (with minimum of 32 pF compensation range).

Four standard acquisition modes (AUTO, NORMAL, SINGLE, MANUAL) are available. The trigger event is created by a dual-level triggering system equipped with a digital pulse length filter and event counter on each level. The channel A, channel B and external trigger input can be activated as a triggering system source. The threshold of the channel A and channel B triggers is settable for the whole range of the scope screen. The threshold of the external trigger is fixed to about 1.5V and is TTL and CMOS compatible. This sophisticated triggering system allows displaying waveforms with very complicated trigger events (e.g. selected row of the video signal).

M520 Series Oscilloscope Features

• Dual-level triggering system with digital pulse length filter and event counter on each level. This allows displaying of very complicated events (e.g. displaying the selected row of a video signal).
• Virtual storage with size of 63000 samples. This feature allows you to delay data acquisition from the trigger event by a maximum of 63000 samples.
• Simple and complex triggering modes. Simple triggering mode is very easy to use; using the complex mode, you can utilize the triggering possibilities to the fullest extent.

The vertical deflection system is equipped with all standard features, such as AC/DC switch, GND switch or probe input ratio selector (1:1, 1:10, 1:100). The measuring channel inputs withstand the voltage of +/-200 V with no respect to the selected deflection factor.

A very useful feature of the vertical deflection system is Digital Shielding. When turned on, it removes asynchronous noise from the measured waveform without any influence to the frequency response.

Using the random sampling method is the horizontal deflection system, capable of reaching the equivalent sampling frequency of up to 20GS/s. It also provides zoom functionality with factors from 10:1 to 1:16. The fastest timebase setting is 200ps/div with zoom factor set to 10:1 or 2ns/div with zoom ratio 1:1. See the tables below for actual figures per model.

M520 Series Oscilloscope Software and Documentation

The scopes come with a printed installation guide. A detailed manual is provided on CD. In addition, the software includes tooltip help that can keep you up and running instead of stopping to go back into the manual.

M520 Series Oscilloscope Add-Ons

The Development Kit is an API allowing you to add control functions for the scope in your own software applications. It works in Windows 98SE, Me, 2000 and XP. It comes with descriptions and examples of all libraries written in Inprise Delphi, Borland C++ and Microsoft Visual Basic.

The Roll Mode optional software package will turn the oscilloscope into datalogger with sampling rate from 50S/s to 5Ms/s in USB 2.0, or 50S/s to 250kS/s in USB 1.1. Measurements are written to your hard disk automatically, so the amount of data measured is limited only by your drive's capacity. Measurements are displayed in real time in the Acquisition window; stored data can be viewed with the Roll Mode Viewer application.

M520 Series Oscilloscope Versions

M520 Series Oscilloscope Specifications

Triggering

System type	Dual level
Trigger source for primary level	selectable Channel A, Channel B or external trigger input
Trigger source for secondary level	selectable Channel A, Channel B or external trigger input
Threshold setting	Channel A and Channel B on the whole display range. External fixed on about 1.5V
Slope selection	Leading or trailing edge independently on each source
Minimum trigger pulse period	5 ns
Minimum trigger pulse length	2.5 ns
Maximum voltage on external trigger input	–10V to +13V at 20 kHz or less
Adjustments	Digital filter with ability of setting the valid pulse length up to 131072*Ts for each level and counter of valid triggering events settable from 1 to 32768 for each level. HOLD-OFF settable up to 131072*Ts with selectable AUTO mode, to sample proper amount of data before trigger. (Ts – actual real time sampling period)

Data acquisition system

No. of divisions	10
No. of pixels per division	M522: 50. All others: 32.
Mode of operation	Sampling before and after trigger with continual selection of the trigger position
Record length	8192 samples per channel.
Time base range in 1:1 mode	M522: 10 ns/d to 100 ms/d in 1-2-5 sequence. M524: 5 ns/d to 100 ms/d in 1-2-5 sequence. M526: 2 ns/d to 100 ms/d in 1-2-5 sequence.
Time base range using different zoom modes	M522: 1 ns/d to 1.6 s/d. M524: 500 ps/d to 1.6 s/d. M526: 200 ps/d to 1.6 s/d.
Time base accuracy	0.01% for 100 ns/d; 0.5% for 50 ns/d to 5 ns/d
Real-time sampling frequency	M522: 1 kHz to 50 MHz. M524: 1 kHz to 100 MHz. M526: 1 kHz to 200 MHz.
Equivalent sampling frequency	M522: 1 kHz to 5 GHz. M524: 1 kHz to 10 GHz. M526: 1 kHz to 20 GHz.
Display range with respect to trigger event	M522, M524 & M526: 8190 samples before to 63000 samples after event (8192 samples max).

Probe compensation generator

Output connector	BNC, together with External trigger input
Output impedance	1 kOhm to parallel with 10nF and approx. 50 Ohm serial
Output waveform	Pulse with 1:1 duty cycle
Frequency	1465 Hz
Output voltage (no load)	3.3V +/- 5%

Power

Power source	USB interface via USB cable
Max current	350mA in USB 1.1; 450mA in USB 2.0

Mechanical characteristics

Dimensions without feet and connectors	165 x 111 x 35 mm
Dimensions with feet and connectors	182 x 111 x 39 mm
Weight	520 g

Country of Origin: Slovak Republic
Leadtime: in stock