aioscilloscope / Bench / Leo Bodnar LBE-1322 Fast-Edge Pulser

Leo Bodnar LBE-1322 Fast-Edge Pulser

Name: Leo Bodnar LBE-1322 Fast-Edge Pulser
Brand: Leo Bodnar

On the benchFast-edge pulse generator

The Leo Bodnar LBE-1322 fast-edge pulser (30 ps rise time, 30 kHz to 300 MHz): its specifications and how we use it to measure the step and frequency response of Rigol scopes running NovaOS.

CH1 Specifications

Rise and fall time	30±2 picosecondsProduct page
Frequency	30kHz to 300MHz with 50% duty ratio and 1Hz resolutionProduct page
Output amplitude	50mVpp to 1.2Vpp (set via USB); DC coupled, negative goingProduct page
Trigger output	1.5Vpp amplitude into 50R load; AC coupledProduct page
Synchronisation input	external reference from 1MHz to 250MHz, 3.3V max; AC coupledProduct page
Pulse output connector	high speed SMA (BNC adaptor is included)Product page
Power	USB powered - requires 200mA at 5VProduct page
Sample unit, as tested	Risetime 29.8ps, Falltime 28.7ps, Amplitude 1.10V, Overshoot 2.1%, Undershoot 3.1%Test report, p. 1

Leo Bodnar's own figures, as its documents state them; each links to the page it is on.

CH2 What it does

Makes a voltage step that rises extremely fast, so how the scope draws it shows how fast a signal the scope can follow.

What we use it for

One capture of a very fast edge gives a channel's step response, and from it the whole frequency response: a cross-check of every band-limit filter and of the rise time.

A 30 ps edge is far faster than any of these scopes, so what a channel draws is its own step response: its rise time, its overshoot and, through the step's derivative, its whole frequency response. NovaOS's band limits were measured relative to each channel's widest setting; the pulser gives the absolute check of every band limit and of each channel's bandwidth, on the DHO924S and the MHO934.

CH3 What we will measure

The tests we will run with it next; the results will appear here.

Step response of every channel: Each channel at 50 Ω (the DHO924S through a 50 Ω feed-through): rise time and overshoot, and the frequency response from the edge, at every band limit.
A 200 MHz band limit: Whether the front end's 200 MHz setting cuts within 10 % of 200 MHz on every channel, before it is offered.

CH4 Discussions

Forum threads worth reading before you buy one.

Yet another fast edge pulse generatorThe maker's own thread on his fast-edge pulsers, since 2017; the LBE-1322 comes in near the end, with owners measuring scope rise times with it.

Datasheets and manuals

LBE-1322 Fast Risetime Variable Frequency Pulser (product page) (web page, from Leo Bodnar)Retrieved 11 October 2026
LBE-1322 sample test report (PDF, 52 kB)Official copy from Leo Bodnar, retrieved 11 October 2026

Where to buy

Back to the bench: everything NovaOS is developed and measured with.