Netscout aircheck G2 User manual
Released 03/2016, Revision 09/2017
Copyright ©2017 NETSCOUT SYSTEMS, INC. All rights reserved.
All product names are trademarks of their respective companies.
Wi-Fi®is a registered trademark of the Wi-Fi Alliance.
AirCheck™ G2
Wireless Tester
User Manual
LEGAL NOTIFICATION
Use of this product is subject to the End User License Agreement available at http://www.netscout.com/legal/terms-and-conditions/
or which accompanies the product at the time of shipment or, if applicable, the legal agreement executed by and between NETSCOUT
SYSTEMS, INC., and the purchaser of this product ("Agreement").
Government Use and Notice of Restricted Rights: In U.S. government ("Government") contracts or subcontracts, Customer will provide
that the Products and Documentation, including any technical data (collectively "Materials"), sold or delivered pursuant to this Agreement
for Government use are commercial as defined in Federal Acquisition Regulation ("FAR") 2.101and any supplement and further are
provided with RESTRICTED RIGHTS. All Materials were fully developed at private expense. Use, duplication, release, modification, transfer,
or disclosure ("Use") of the Materials is restricted by the terms of this Agreement and further restricted in accordance with FAR 52.227-14
for civilian Government agency purposes and 252.227-7015 of the Defense Federal Acquisition Regulations Supplement ("DFARS") for
military Government agency purposes, or the similar acquisition regulations of other applicable Government organizations, as applicable
and amended. The Use of Materials is restricted by the terms of this Agreement, and, in accordance with DFARS Section 227.7202 and FAR
Section 12.212, is further restricted in accordance with the terms of NETSCOUT's commercial End User License Agreement. All other Use is
prohibited, except as described herein.
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Attn: Legal Department
NETSCOUT SYSTEMS, INC. reserves the right, at its sole discretion, to make changes at any time in its technical information, specifications,
service, and support programs.
i
Table of Contents
I. Introduction ..................................................................................................................................................1
Link-Live Cloud Service ....................................................................................................................................................1
AirCheck G2 Manager ......................................................................................................................................................2
About this Manual ............................................................................................................................................................2
Register Your Product ......................................................................................................................................................2
The NETSCOUT Website ..................................................................................................................................................3
Contact NETSCOUT ...........................................................................................................................................................3
Safety Information ............................................................................................................................................................3
Package Contents .............................................................................................................................................................5
Internal Battery Charging and Life .................................................................................................................................5
II. AirCheck G2 Tester Physical Features ......................................................................................................6
III. The AirCheck G2 Home Screen .................................................................................................................7
IV. Discovering Networks and Access Points ................................................................................................9
The Networks List Screen ................................................................................................................................................10
How to: Search for Ad-Hoc networks ............................................................................................................................................12
The Network Details Screen ............................................................................................................................................12
The Access Points List Screen .........................................................................................................................................14
The Access Point Details Screen .....................................................................................................................................17
Troubleshoot: If the Tester Does Not Discover an Access Point or Network ............................................................20
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V. Viewing Channel Usage ............................................................................................................................. 21
The Channels Utilization Screen .................................................................................................................................... 21
The Select Channel Screen .............................................................................................................................................. 23
The Channel Details Screen ............................................................................................................................................ 24
The Channels Overlap Screen ........................................................................................................................................ 25
VI. Discovering Clients ..................................................................................................................................... 27
The Client List Screen ...................................................................................................................................................... 27
The Client Details Screen ................................................................................................................................................ 29
Troubleshoot: If the Tester Does Not Discover a Client .............................................................................................. 31
VII. Detecting Interferers ................................................................................................................................. 32
The Interferer Events List Screen ................................................................................................................................... 32
The Interferer Event Details Screen ............................................................................................................................... 34
VIII. Using AutoTest to Diagnose Your Network Health ................................................................................ 36
AutoTest Air Quality ......................................................................................................................................................... 36
802.11 Utilization .................................................................................................................................................................... 36
Non-802.11 Utilization ........................................................................................................................................................... 37
Co-Channel Interference ....................................................................................................................................................... 38
Adjacent Channel Interference ............................................................................................................................................. 38
Rogue Access Points Test ................................................................................................................................................ 39
AutoTest Network Tests .................................................................................................................................................. 39
How to: Run Network Tests as part of AutoTest .......................................................................................................................... 39
Network Quality Results ........................................................................................................................................................ 41
Connection Test Results ........................................................................................................................................................ 41
IP Address Result .................................................................................................................................................................... 42
Captive Portal Result .............................................................................................................................................................. 42
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Target Test Results ................................................................................................................................................................. 43
IX. Testing Ethernet for Access Point Backhaul ........................................................................................... 44
The Ethernet Test Results Screen .................................................................................................................................. 44
X. Companion Services .................................................................................................................................. 46
Getting Started in Link-Live Cloud Service .................................................................................................................... 46
How to: Claim the AirCheck G2 to Link-Live ................................................................................................................................. 46
Getting Started with the AirCheck G2 Manager PC Application ................................................................................. 47
XI. Customizing the Tester for your Network .............................................................................................. 48
Changing the Location Settings and Language ............................................................................................................ 48
How to: Change the location settings ........................................................................................................................................... 48
How to: Change the language on the Tester ................................................................................................................................ 48
Entering Network Security Credentials ......................................................................................................................... 49
How to: Enter credentials from the Networks or Access Points list ........................................................................................... 49
How to: Enter credentials in the Settings menu .......................................................................................................................... 50
How to: Enter credentials in AirCheck G2 Manager .................................................................................................................... 50
Using Profiles to Manage Settings and Security Credentials ...................................................................................... 51
How to: Save the current settings as a Profile on the AirCheck G2 Tester ................................................................................ 52
How to: Transfer a Profile from a PC to the Tester ..................................................................................................................... 53
How to: Load a Profile that is saved in the AirCheck G2 Tester ................................................................................................. 54
How to: Delete a Profile on the Tester .......................................................................................................................................... 54
Adjusting the Test Thresholds ........................................................................................................................................ 54
How to: Change the test thresholds on the Tester ...................................................................................................................... 55
XII. Verifying Connectivity and Coverage ....................................................................................................... 56
Defining Ping and TCP Port Open Test Targets ............................................................................................................ 56
iv
How to: Add a new network Test Target ....................................................................................................................................... 56
Running a Connect to Network or Connect to AP Test ............................................................................................... 58
Reviewing Connect to Network or AP Results .............................................................................................................. 59
Connection Established ......................................................................................................................................................... 59
IP Address ................................................................................................................................................................................ 59
Captive Portal .......................................................................................................................................................................... 59
Target Tests ............................................................................................................................................................................. 60
Reviewing User-Defined Test Target Results ................................................................................................................ 61
Next Steps ......................................................................................................................................................................... 63
XIII. Locating an Access Point, Client, or Interferer ....................................................................................... 64
How to: Locate an AP, Client, or Interferer ................................................................................................................................... 64
How to: Search using the Internal Antennas ............................................................................................................................... 65
The Locate AP Screen ...................................................................................................................................................... 66
The Locate Client Screen ................................................................................................................................................. 67
The Locate Interferer Screen .......................................................................................................................................... 69
Using the External Directional Antenna ........................................................................................................................ 70
How to: Use the external antenna to locate ................................................................................................................................ 70
XIV. Performing a Network Roaming Test ...................................................................................................... 73
How to: Start a roaming test ......................................................................................................................................................... 73
How to: Select a custom test target .............................................................................................................................................. 73
The Roaming Test Screen ................................................................................................................................................ 73
XV. Performing an Access Point Range Test .................................................................................................. 77
How to: Start a Range Test ............................................................................................................................................................. 77
How to: Select a custom test target .............................................................................................................................................. 77
The AP Range Test Screen ............................................................................................................................................... 78
v
XVI. Conducting iPerf Performance Testing ................................................................................................... 80
How to: Run an iPerf test ............................................................................................................................................................... 80
The Select iPerf Server Screen ........................................................................................................................................ 80
Available iPerf Remotes List .................................................................................................................................................. 82
How to: Discover a NETSCOUT Test Accessory using the Ethernet Test .................................................................................... 82
Reviewing iPerf Test Results ........................................................................................................................................... 83
Results Always Included ......................................................................................................................................................... 83
TCP only Results ...................................................................................................................................................................... 84
UDP only Results ..................................................................................................................................................................... 84
XVII. Saving Test Sessions and Managing Files ................................................................................................ 85
Saving Sessions and Packet Captures ........................................................................................................................... 85
How to: Save a Test Session ........................................................................................................................................................... 85
How to: Save and View a Packet Capture .................................................................................................................................... 86
Managing Files on the AirCheck G2 Tester ................................................................................................................... 86
How to: Rename and Delete a file ................................................................................................................................................. 86
How to: Export files to a USB drive ............................................................................................................................................... 87
How to: View available memory on the Tester ............................................................................................................................ 87
Using the Remote Interface ............................................................................................................................................ 88
Managing Profiles and Sessions on a PC using AirCheck G2 Manager ..................................................................... 88
How to: Transfer and view test sessions with AirCheck G2 Manager ........................................................................................ 88
How to: Transfer and view Profiles with AirCheck G2 Manager ................................................................................................ 89
How to: Load the latest list of vendor prefixes into the Tester .................................................................................................. 89
XVIII.All AirCheck G2 Settings ............................................................................................................................ 91
Profiles ............................................................................................................................................................................... 91
Networks ........................................................................................................................................................................... 91
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How to: Add a network and configure network settings ............................................................................................................ 91
How to: Edit a network ................................................................................................................................................................... 92
How to: Delete a network ............................................................................................................................................................... 92
Access Points .................................................................................................................................................................... 92
How to: Add an AP and configure AP settings ............................................................................................................................. 92
How to: Edit an AP .......................................................................................................................................................................... 92
How to: Delete an AP ...................................................................................................................................................................... 93
802.11 Settings ................................................................................................................................................................. 94
Interferer Settings ............................................................................................................................................................ 97
Ethernet Settings .............................................................................................................................................................. 97
How to: Configure a Test Target for Ethernet Tests ..................................................................................................................... 97
Thresholds ........................................................................................................................................................................ 99
AutoTest Settings ............................................................................................................................................................. 101
How to: Configure AutoTest settings ............................................................................................................................................. 101
iPerf Settings ..................................................................................................................................................................... 101
Test Targets ...................................................................................................................................................................... 102
How to: Add a User-Defined Test Target ...................................................................................................................................... 103
How to: Edit a user-defined Test Target ....................................................................................................................................... 103
How to: Delete a user-defined Test Target ................................................................................................................................... 103
Location Settings .............................................................................................................................................................. 104
Manage Files ..................................................................................................................................................................... 104
Device Settings ................................................................................................................................................................. 104
Link-Live Settings .................................................................................................................................................................... 105
How to: Configure Link-Live Settings for Web Proxy ................................................................................................................... 106
About ................................................................................................................................................................................. 106
vii
XIX. Maintenance ............................................................................................................................................... 107
Cleaning the Tester .......................................................................................................................................................... 107
Updating the AirCheck G2 Firmware ............................................................................................................................. 108
Exporting a Troubleshooting Log ................................................................................................................................... 108
Restoring Factory Defaults .............................................................................................................................................. 108
Viewing Device Information ............................................................................................................................................ 109
Troubleshoot: If the Tester Will Not Turn Off ............................................................................................................... 109
XX. Specifications and Compliance ................................................................................................................ 110
Environmental Specifications ......................................................................................................................................... 110
General Specifications ..................................................................................................................................................... 111
Wireless Specifications .................................................................................................................................................... 112
Wi-Fi Antennas ........................................................................................................................................................................ 113
Wi-Fi Adapter ........................................................................................................................................................................... 114
Certifications and Compliance ....................................................................................................................................... 117
Federal Communication Commission and Industry Canada Interference Statement ............................................ 118
Important Note: FCC and IC Radiation Exposure Statement ...................................................................................... 119
Exposure to RF Energy ..................................................................................................................................................... 119
Regulatory Statements .................................................................................................................................................... 121
Appendix A: Quick Reference: Examining your Network Health ................................................................. 122
How is my Network Quality? ........................................................................................................................................... 122
What is in the Wireless Environment? ........................................................................................................................... 124
Can Devices Connect to My Network? ........................................................................................................................... 125
What is Causing Slow Network Performance or Dropped Connections? ................................................................. 127
Are There Security Risks in My Network? ...................................................................................................................... 127
Where is an Access Point? ............................................................................................................................................... 128
ix
List of Figures
Figure Page
1. AirCheck G2 Physical Features ...................................................................................................................................6
2. AirCheck G2 Home Screen..........................................................................................................................................7
3. Networks List Screen...................................................................................................................................................10
4. Possible Ad-Hoc Network............................................................................................................................................12
5. Networks Sorted by Client Count...............................................................................................................................12
6. Network Details Screen...............................................................................................................................................12
7. Access Points List .........................................................................................................................................................15
8. Select BSSID to View AP Details..................................................................................................................................17
9. Access Point Details Screen ........................................................................................................................................18
10. Channels Utilization Screen........................................................................................................................................21
11. Select Channel Screen.................................................................................................................................................23
12. Channel Details Screen ...............................................................................................................................................24
13. Channels Overlap Screen............................................................................................................................................25
14. Clients List Screen........................................................................................................................................................27
15. Client Details Screen....................................................................................................................................................30
16. Interferer Events List Screen ......................................................................................................................................33
17. Interferer Event Details Screen ..................................................................................................................................35
18. AutoTest Air Quality Results Screen ..........................................................................................................................36
19. 802.11 Channel Utilization Results ............................................................................................................................37
x
20. Air Quality Co-Channel and Adjacent Channel Interference Results.....................................................................38
21. Rogue Access Points Test............................................................................................................................................39
22. AutoTest Settings Screen ............................................................................................................................................40
23. AutoTest Network Tests ..............................................................................................................................................40
24. AutoTest Network Quality...........................................................................................................................................41
25. AutoTest Network Connection Test Results .............................................................................................................42
26. AutoTest Network Test IP and Test Targets..............................................................................................................43
27. Ethernet Test Screen ...................................................................................................................................................44
28. Successful Link-Live Upload Field ..............................................................................................................................46
29. Session Data > Networks in AirCheck G2 Manager .................................................................................................47
30. Settings Menu Screen..................................................................................................................................................48
31. Network Details Screen...............................................................................................................................................49
32. Configured Networks in Settings ...............................................................................................................................50
33. Settings > Profiles Menu .............................................................................................................................................52
34. Profiles > Save As .........................................................................................................................................................53
35. AutoTest Air Quality Results Screen ..........................................................................................................................54
36. Thresholds Screen .......................................................................................................................................................55
37. Settings > Test Targets Screen ...................................................................................................................................57
38. Configure Target Screen .............................................................................................................................................57
39. The Connect to AP Test Screen (In Progress) ...........................................................................................................58
40. Captive Portal ...............................................................................................................................................................59
41. The Connect to AP Test Results..................................................................................................................................60
42. The Connect to Network Screen ................................................................................................................................61
43. Connection Test Target Results..................................................................................................................................61
44. Completed Connect to Network Screen....................................................................................................................62
45. Search Pattern for the Omni-directional Antennas in the Tester ..........................................................................65
46. Locate Access Point Screen ........................................................................................................................................66
47. Locate Client Screen ....................................................................................................................................................67
xi
48. Locate Screen Connection Lost/Recovered ..............................................................................................................68
49. Locate Interferer Screen .............................................................................................................................................69
50. Search Pattern for the External Antenna..................................................................................................................71
51. How to Point the External Antenna ...........................................................................................................................72
52. Network Roaming Test Screen...................................................................................................................................74
53. Roaming Test Ping Stats..............................................................................................................................................74
54. Roaming Test Connection Range...............................................................................................................................75
55. AP Range Test Screen..................................................................................................................................................78
56. AP Range Test Connection Range Graph ..................................................................................................................79
57. Select iPerf Server Screen ...........................................................................................................................................80
58. Touch to Select an iPerf Server ..................................................................................................................................81
59. iPerf Test TCP Results..................................................................................................................................................83
60. Save Session Screen ....................................................................................................................................................85
61. Manage Files Screen....................................................................................................................................................87
62. Transfer Sessions Button............................................................................................................................................88
63. Transfer Sessions Dialog Box .....................................................................................................................................89
64. oui_abbr.txt File............................................................................................................................................................90
65. Settings Menu Screen..................................................................................................................................................91
66. Test Targets Screen .....................................................................................................................................................102
67. Link-Live Settings Screen.............................................................................................................................................105
AirCheck™G2 Wireless Tester
I. INTRODUCTION
The AirCheck™G2 Wireless Tester is a portable tool for
verifying network availability and performance and
troubleshooting connection issues. Networking and IT
professionals can, for example, use the AirCheck G2 Tester
to ensure that 802.11 wireless LANs are available to mobile
users or examine channel usage to identify the source of
problems.
The AirCheck G2 Tester operates on 802.11b/g/n networks in
the 2.4-GHz band and 802.11a/n/ac networks in the 5-GHz
band. It offers the following test types:
The high-level discovery screens for Networks, Access
Points, and Clients each show an overview of the
devices that AirCheck G2 has detected on your network.
From the discovery screens, you can touch any network
or device’s name to view its detailed connections and
measurements.
The Channels utilization screen allows you to examine
in-depth the usage for all channels in your network.
AutoTest provides a comprehensive summary of your
Wi-Fi Air Quality and Network Quality at the current
time and location.
The wired Ethernet Test measures PoE voltage and link
speed and indicates whether the Tester can connect to
network and user-defined targets.
The Locate function helps you physically find access
points, clients, and interferers.
Network Roaming and AP Range tests define the
boundaries of your network.
In addition to the AirCheck G2 Tester hand-held tool, the
Link-Live Cloud Service and AirCheck G2 Manager PC
application provide managing, organizing, and documenting
capabilities for your Tester and test data.
Link-Live Cloud Service
The Link-Live Cloud Service is a free, online system for
viewing, tracking, and organizing your AirCheck G2 test
2
results, which are automatically uploaded to Link-Live once
configured. To start, create a user account at Link-Live.com.
See “Getting Started in Link-Live Cloud Service,” page 46.
AirCheck G2 Manager
The AirCheck™G2 Manager PC application allows you to
configure Tester Profiles; transfer, store, organize, and report
test results; and update your AirCheck G2 Tester software.
For example, you can use AirCheck G2 Manager to compare
information from different test sessions to see changes in a
wireless LAN and generate reports based on test data.
Download the AirCheck G2 Manager software from Link-Live
at https://app.link-live.com/downloads.
See “Getting Started with the AirCheck G2 Manager PC
Application,” page 47.
About this Manual
This User Manual covers all AirCheck G2 Tester functionality,
with additional details not covered in the embedded Help on
the Tester.
It is designed to be easy to navigate on a screen, with Adobe
PDF Bookmarks to the left, and blue hyperlinks that point to
content in other parts of the manual. Blue underlined links
go to external resources on the internet.
Register Your Product
Registering your product with NETSCOUT gives you access to
valuable information on product updates, troubleshooting
procedures, and other services. To register, fill out the online
form on the NETSCOUT website at
enterprise.netscout.com/register.
3
The NETSCOUT Website
The NETSCOUT (formerly Fluke Networks) website provides
additional documentation, release notes, software updates,
and other resources.
Go to http://enterprise.netscout.com, and click Support.
Contact NETSCOUT
Online: http://enterprise.netscout.com
Email: CustomerCare@netscout.com
Phone: Toll-free 1-844-833-3713;
International 1-987-320-2150
For more phone numbers, go to our website, shown above.
For mail correspondence:
NETSCOUT SYSTEMS, INC.
310 Littleton Road
Westford, MA 01886
www.NETSCOUT.com
Safety Information
Table 1 gives descriptions of the safety symbols used on the
Tester and in this manual.
Table 1. Safety Symbols
Warning or Caution: Risk of damage to or
destruction of equipment or software.
Warning: Risk of electrical shock.
This product complies with the WEEE Directive
marking requirements. The affixed label
indicates that you must not discard this
electrical/electronic product in domestic
household waste.
Product Category: With reference to the
equipment types in the WEEE Directive Annex I,
this product is classed as category 9
“Monitoring and Control Instrumentation”
product. Do not dispose of this product as
unsorted municipal waste.
4
Warning
Read all safety information before using this Product.
Carefully read all instructions.
Use the Product only as specified, or the protection
supplied by the Product can be compromised.
Use only manufacturer approved power adapters to
charge the battery.
Do not use the Product around explosive gas, vapor,
or in damp or wet environments.
Examine the case before you use the Product. Look
for cracks or missing plastic. Carefully look at the
insulation around the terminals.
Do not operate the Product with covers removed or
the case open. Hazardous voltage exposure is
possible if connected to a PoE source.
Batteries contain hazardous chemicals that can
cause burns or explode. If exposure to chemicals
occurs, clean with water and get medical aid.
Do not short the battery terminals together.
Do not disassemble or crush battery cells and battery
packs. Do not put battery cells and battery packs
near heat or fire. Do not put in sunlight.
Caution
If you use an external antenna, use only the antenna
made for the AirCheck G2 Tester. The Tester may not
operate correctly with other antennas and may
violate local regulations.
Any adjustment to the device’s controls or operation
must not violate your local regulations on low-
power-radio-wave emitting devices.
Any adjustments to the Product should be performed
by a technician with expertise on radio frequency
devices maintenance.
Do not attempt to open the unit or replace any
internal device components (ICs, transistors, etc.),
which may lead to violation of local regulations as
well as void the Product warranty.
U-NII devices operating in the 5.25-5.35 GHz and 5.47-
5.725 GHz band, without radar detection are
restricted to use indoors.
5
Package Contents
The AirCheck G2 Wireless Tester comes with the accessories
in the list below. If something is damaged or missing, tell the
dealer where you purchased the product.
AirCheck G2 with internal rechargeable battery
AC adapter
USB cable for connecting the Tester to a PC
Carrying case
Quick Start Guide
Compliance Document
Internal Battery Charging and Life
Charge the battery for 3 hours before you use it for the first
time. When the Tester is off, the battery charges in
approximately 7 hours. However, you can use the Tester
while you charge the battery.
To charge the battery, connect the AC adapter to the
Charging Port, shown in Figure 1 on page 6.
The battery life is approximately 4.5 hours during typical
operation.
The battery icon in the upper-right corner of the screen
visually displays the amount of charge remaining before the
internal battery is completely drained:
NOTE: The battery will not charge if the internal temperature
of the Tester is above 122ºF (50ºC).
The battery is fully or almost fully charged.
The battery life is low. Connect the ac adapter
to the charging port to charge the battery and
ensure the Tester continues to operate.
The ac adapter is connected to the charging
port.
AirCheck G2 Tester Physical Features
6
II. AIRCHECK G2 TESTER PHYSICAL FEATURES
Figure 1. AirCheck G2 Physical Features
Touchscreen
Power Button
and LED
RJ-45 Ethernet
Port
10/100/1000 Mbps
External
Antenna
Connector
USB Port 1
Micro USB Port 2
USB Port 3
Charging
Port
Kensington
Lock
External
Antenna
Holder
Power Button: Turns
the Tester unit on or off.
When the Tester is off,
press this button to
power on.
When the Tester is on,
press for one second
to shut it down.
For “hard” power off,
without software
shutdown, press for
four seconds.
The Power LED glows
green when the unit is
on and glows red when
the battery is charging
but the unit is off.
Once the battery is fully
charged, the LED turns
off.
Charging Port:
Connects with the AC
adapter to charge the
unit’s internal battery.
External Antenna:
Sold separately.
USB Port 1: For
500mA of current (any
supported USB
peripheral)
Micro USB Port 2: For
communication with
AirCheck G2 Manager
over a USB Micro-to-
Type-B cable
USB Port 3: For
200mA of current, e.g.,
thumb drives, etc.
The AirCheck G2 Home Screen
7
III. THE AIRCHECK G2 HOME SCREEN
Figure 2. AirCheck G2 Home Screen
Profile Name: This field displays the name of the Profile
the Tester is currently using. The Profile is Default if you
have not created a custom Profile. The name shows an
asterisk (*) if you have changed a Profile-related setting
on the Tester since you loaded or saved the Profile.
NOTE: Touch the profile name to open the Profiles
screen, where you can save, manage, and load your
profiles. See “Customizing the Tester for your
Network,” page 48.
Networks (#) : This function discovers wireless LANs
and displays the number of networks discovered in
parentheses. Touch this row to view the discovered
Networks list screen. See “Discovering Networks and
Access Points,” page 9.
The AirCheck G2 Wireless Tester features a full color
touchscreen. Touch functions are noted in the following
descriptions of the Home Screen components:
This Transmitting Indicator appears when the
Tester is actively transmitting packet data.
The Channel Indicator Shows the Wi-Fi
channel that AirCheck G2 is scanning in real
time.
The Battery Life Indicator visually displays the
amount of charge remaining.
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2
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