---
title: "SAM 940+ | (Plus) Hand-Held Radioisotope Identifier"
date: 2024-11-04T05:05:37Z
modified: 2026-02-26T02:40:38Z
permalink: "https://www.berkeleynucleonics.com/sam-940-plus/"
type: page
status: publish
excerpt: ""
wpid: 17851
---

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####  Model 765 | Can I obtain negative pulses? 

 



 ](#) 

Yes. The Model 765 allows you to set the [pulse top](https://en.wikipedia.org/wiki/Pulse_generator) and pulse baseline from -2.5V to +2.5V.