Data Harvest 1200 Bedienungsanleitung
© Copyright Data Harvest Group Ltd - All Rights Reserved - Freely photocopiable for use within the purchaser’s
establishment
1200 - Wireless Light Gate Sensor
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Table of contents
Introduction ...................................................................................................... 3
Pack Contents .................................................................................................... 4
Operational Overview ......................................................................................... 5
Connectivity ...................................................................................................... 8
Charging the Sensor ........................................................................................... 9
Firmware Updates ............................................................................................
10
Usage Information ............................................................................................
11
Practical Investigations .....................................................................................
13
Sensor Specifications ........................................................................................
15
Limited Warranty .............................................................................................
16
Compliance .....................................................................................................
17
Troubleshooting ...............................................................................................
18
Notices ............................................................................................................
19
Contact Information ..........................................................................................
20
PDF Translations ..............................................................................................
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Introduction
Thank you for purchasing the Smart Wireless Light Gate Sensor. We pride ourselves on producing
high quality products that meet with the demands of the busy classroom environment. If you have any
problems using this sensor, please read this documentation in full before contacting the Data Harvest
support team.
Overview
The Wireless Smart Dual Light Gate has a pair of light gates spaced at 1.5 cm to accurately measure
velocity. The smart wireless light gate also has a wide gate auxiliary infra-red port and a
synchronisation socket to link to another gate. The wide gate auxiliary port allows you to time the
movement of items that would not fit through the arms of the gate.
The nature of wireless communications means that there is a latency between devices. The latency is
in the region of 2 ms and makes the wireless synchronisation of two light gates unrealistic for accurate
data. If work requires a dual light gate set up, we recommend the use of a second dual light gate set
connected by a sync link cable to reduce latency to zero.
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Pack Contents
This product is supplied with the following items:
·
1 x Smart Wireless Light Gate Sensor
·
1 x USB Connecting Lead
·
1 x Link Cable
·
1 x Mounting rod
Additional Accessories
To get the most from your Smart Wireless Light Gate Sensor, the following items should be considered:
·
Interrupt card set
·
Data Harvest - Wireless Dynamics System
·
Data Harvest - Spoked Pulley
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Operational Overview
The diagram below shows the specific parts of the sensor. Read further to explore the functionality of
each part of the sensor.
1.On/Off Switch
2.USB Port
3.Connection socket to attach Light Gates together
4.Unique ID Number
5.Status Indicator
6.Laser Gate
7.Laser Gate Indicator
8.A – Transmitter
9.B – Transmitter
10.A – Receiver and indicator
11.B – Receiver and indicator
12.Mounting Rod connection
13.Spoked Pulley Wheel Connection
On/Off Switch (1)
The sensor's on/off switch allows you to turn the sensor on, off or perform a hard reset.
USB Port (2)
Use to connect to a computer or a charging unit.
For specific USB or Bluetooth connectivity instructions, please see the 'Connectivity' section of this
documentation.
For instructions on charging your device, see the section on 'Charging the Sensor'.
Connection socket to attach Light Gates together (3)
A Jack plug connection lead is supplied with each Light Gate, this is used to connect two Light Gates
together when you want a physical separation using two Light Gates.
Unique ID Number (4)
All Smart Wireless Sensors are labelled with a unique ID number. This number is used in the
EasySense2 app, so that you can identify each sensor when making a connection wirelessly.
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The Status Indicators (5)
The sensor features a single status indicator that changes colour and flashes. See the table below for
further information.
Status Light
Indicates
No light
Sensor is Off. Short press the On/Off switch
Blue flashing Sensor On and Bluetooth advertising
White flashing Charging via USB mains charger or USB port
Green flashing Communication with the EasySense2 app (via USB
or Bluetooth) has been established
Orange flashing Recording data
Red flashing Battery is low
Laser Guide (6)
This can be used with any laser, when using a larger object that will not fit between the Light Gate
transmitter and receiver (a laser is not supplied with the light gate).
Laser Gate Indicator (7)
This will show a green light when the laser has been detected and will turn red when an object breaks
the laser beam.
A – Transmitter (8)
This is where the infrared beam for A starts. A measurement should be taken if needed for distance.
B – Transmitter (9)
This is where the infrared beam for B starts. A measurement should be taken if needed for distance.
A – Receiver and Indicator (10)
This is where the infrared beam for A ends. A red light will appear when the beam has been broken.
B – Receiver and Indicator (11)
This is where the infrared beam for B ends. A red light will appear when the beam has been broken.
Mounting Rod Connection (12)
This is used to secure the metal mounting rod bar which can then be used in the boss on a retort
stand.
Spoked Pulley Connection (13)
A spoked pulley can be purchased separately (product number 3177) and secured here. The spoked
pulley will block the infrared beam of the Light Gate as it rotates and can therefore be used for
continuous recording of time/distance, time/velocity and time/acceleration relationships. (A spoked
pulley is not supplied with a Light Gate)
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To switch the sensor off
·
Press and hold down the On/Off switch until the white light shows, then release.
·
If not communicating with the EasySense2 app, the sensor will turn off after a period of one hour of
inactivity.
Hard resetting the sensor
·
If necessary, attach the sensor to power.
·
Press and hold down the On/Off button for at least 8 seconds until the status LED gives a flash of
blue light, then release.
·
If the sensor fails to respond, contact Product Support at Data Harvest. Please provide details of:
oThe computer platform it is being used with and the EasySense2 app’s version number.
oA description of the problem being encountered.
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Connectivity
The sensor is both USB and Bluetooth compatible. Install the EasySense2 app, if it is not already on
your device. For details of how to operate the EasySense2 app, please refer to the EasySense2
documentation.
USB Connectivity
Quick Steps
1.Connect the sensor to the computer’s USB port using the USB cable supplied.
2.The computer will automatically detect a new device and depending on your operating system, will
install any applicable device drivers.
3.Start EasySense 2 app.
4.Within the EasySense2 app, the Devices icon will change to green to show that the sensor is
connected, and the status light on the sensor will also turn green.
5.Begin your practical investigations.
Bluetooth Connectivity
Using Bluetooth, the sensor can wirelessly connect to mobile devices such tablets and mobile phones,
as well as desktop or laptop computers, giving students the ability to run experiments independently
without being tethered to a device.
See the EasySense2 app user manual system requirements for further details.
Quick Notes on Bluetooth Connectivity
Only use with the EasySense2 app, you do not need to pair the device. If paired, the sensor will not be
available to the EasySense2 app.
Computers or devices will need to support Bluetooth Low Energy (BLE). For further information refer to
the instructions provided for the EasySense2 app.
Quick Steps
1.
Short press the on/off switch to turn the sensor on, blue LED will flash.
2.Open the EasySense2 app.
3.Select the Devices icon.
4.
Select your sensor from the list of available sensors to connect to the device. Your sensor is
identified by its unique ID in the list.
5.Click on connect at the side of your sensor in the list.
6.
The Devices icon will change to green and the status light on the sensor will flash green to indicate a
connection has been established.
7.Begin your practical investigations.
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Charging the Sensor
The Smart Wireless sensors are fitted with a rechargeable lithium-ion battery and can be charged via
the USB port. Use the supplied USB lead to connect the sensor either directly to a USB port on your
computer, a powered USB hub or a USB mains charger that outputs 5 V at 500 mA or more.
A full charge can take up to 4 hours.
Additional Information
Whenever the sensor is connected to the USB port on the computer or to a USB mains charger (output
5 V at 500 mA or more), it will automatically recharge the battery (LED status flashing white).
When connected to a computer, the computer should be turned on and not in sleep or standby mode,
as the battery may drain instead of charge.
The sensor will stay awake for 60 mins when Bluetooth advertising (LED status flashing blue).
Lithium-ion batteries are ‘memory-free’ and prefer a partial rather than a full discharge. Constant partial
discharges with frequent recharges will not cause any harm. Frequent full discharges should be
avoided whenever possible. Ideally the sensor should be stored at about 40% or more charge.
The speed at which a lithium-ion battery will age is governed by both its storage temperature
(preferably less than 40 C) and state-of-charge.
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Firmware Updates
Occasionally Data Harvest may release updated firmware which will contain improvements or new
features.
Updates will take place when you connect your sensor to the EasySense2 app. You will be given the
option to decline an update.
Updates can be performed over USB or Bluetooth and will typically take less than one minute. Updating
firmware over USB will be quicker than Bluetooth.
Do not disconnect the sensor, or power off during the update.
If you have a wireless connection to the EasySense2 app, the sensor will have to be reconnected after
performing the update.
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