Smart Timer • ME-8930

TEACHER FAVORITE

Rotary motion—In Acceleration: Linear Pulley mode; the Smart Timer measures the acceleration of the string over the Smart Pulley.

Two Photogate Ports

Speed of projectile—In Time: Two Gates mode; determine the speed of a ball fired by a Projectile Launcher through two photogates.

Speed before and after collision—In Speed: Collision mode; use two carts and two photogates with a single Smart Timer to measure initial and final speeds of both carts.

Speed of object through one gate—In Time: One Gate mode; timing begins when the photogate beam is first blocked and continues until the beam is blocked again. Use the fence supplied with the Smart Timer.

Double Positive-click Buttons

U.S. Educator Price

$285

A versatile cost-effective, portable way for making accurate time, speed, acceleration, and count measurements.

What's Included

1x Smart Timer
2x Picket Fences
1x 9 VAC Adapter
1x Lab Manual

What to Consider

See the Buying Guide for this item's required, recommended, and additional accessories.

Product Summary

The ME-8930 Smart Timer works with all PASCO timing devices:

Accessory Photogate
Photogate/Pulley System
Time-of-Flight Accessory
Freefall Adapter
Laser Switch
G-M Tube

Features

Works With 2 Photogates
More Than Just a Timer: Calculates speed and acceleration as well as measuring time.
Intuitive Operation: The menu-driven display mirrors the easy-to-follow flowchart on the Smart Timer label.
Quick Setup:Turn on the switch, plug in the photogates, and it’s ready to use.
Increased Timing Accuracy: The redesigned 3-section fence (2 included) uses more accurate method of measurement from leading edge to leading edge.
Portable or Plug-in:The battery-operated (4 AA cells) Smart Timer can be used anywhere. It can also be operated on the 9 V AC adapter (included).
Calculation Lock-out Switch: A switch inside the battery compartment disables the speed and acceleration modes. Timing modes are unaffected, and students are required to do their own calculations.

Typical Experiments

Acceleration Due to Gravity*
Newton’s Second Law*
Conservation of Momentum in Collisions*
Rotational Inertia of a Disk & Ring*
Acceleration Down an Incline
Simple Harmonic Oscillator
Oscillations on an Incline
Springs in Series and Parallel
Projectile Motion Using Photogates
Time-of-Flight and Initial Velocity
Determining the Acceleration Due to Gravity
Counting Radiation with the G-M Tube

What's Included

1x Smart Timer
2x Picket Fences
1x 9 VAC Adapter
1x Lab Manual

WARNING: CHOKING HAZARD!

Small parts. Not for children under 3 years.

Product Specifications

Resolution	100 μs
Accuracy	0.01% of full range of the measured time
Display	2-line, 16-character, alphanumeric LCD
Inputs	Two 1/4” stereo phone jacks on side panel— TTL compatible
Power Requirements	Four “AA” batteries (not included) or AC adapter (9 VDC, 500 mA) included

Buying Guide

Recommended Accessories	P/N	Price
Accessory Photogate	ME-9204B	$72
Picket Fences (Smart Timer)	ME-8933	$27
Freefall Adapter	ME-9207B	$239
Photogate & Pulley System	ME-6838A	$72
Time-of-Flight Accessory	ME-6810A	$75
G-M Tube/Power Supply	SN-7927A	$185
Phone Jack Extender Cable	PI-8117	$21

Product Guides

Photogates, Fences, and Timers

Photogates, fences, and timers are a staple of every physics lab. We’ve developed two standalone photogates, as well as two software-dependent options with varying capabilities and applications. This page compares our products’ functions, applications, and connectivity to help you select the perfect fit for your lab.