AirO is intended for technical and not-too-technical owners of Wi-Fi capable Android devices. It displays the health of the Wi-Fi (“Local Area”) connection, and measures the characteristics of a “Wide Area” connection to a server deeper in the network. It can be used to answer questions like:
• What’s wrong with my Wi-Fi today?
• How strong is my Wi-Fi signal?
• Is there evidence of wireless interference?
• Is the problem in the Wi-Fi connection, or out on the Internet (or corporate network)?
• Is the overall connection to the data center good enough to run my corporate apps?

For an admin guide, including instructions on setting up your Aruba network so mDNS (AirGroup) automatically configures target addresses for AirWave and iPerf servers (allowing the app as downloaded to work on different networks without user interverntion) see the Air Observer Admin Guide hosted on the Aruba Airheads Community web page http://community.arubanetworks.com/t5/Aruba-Apps/New-Admin-Guide-for-the-AirO-Air-Observer-app/td-p/229749 (or go to community.arubanetworks.com and search for "AirO").

The top “Wi-Fi and Local Area Network” section of the screen displays three measurements that show the health of the Wi-Fi connection:

• Signal Strength or RSSI in dBm
We measure signal strength first because if it’s poor, there is no chance of getting a good connection. The remedy, in simple terms, is to get closer to the access point.

• Link Speed.
The usual cause of low link speeds is poor signal strength. But sometimes, even when signal strength is good, interference on the air from Wi-Fi and non-Wi-Fi sources reduces link speeds.

• Ping. This is the familiar ICMP echo test to the network’s default gateway.
A low link speed will often cause long ping times. If link speeds are good but pings slow, it may be a long way to the default gateway over a narrow broadband connection.

The lower section of the screen displays results from tests between the device and a server computer, usually in the corporate data center or on the Internet. The address of this server is chosen from a number configured in ‘settings' – but once chosen, only one server address is used for these tests.

• Ping. There is a ping measurement to this server. It is the same ping test as above, but because this one goes farther it will normally (but not always) take longer. Again, 20msec would be fast and 500 msec would be slow.
Some networks may block ICMP (ping) traffic. In this case, the Wide Area Network ping test will always fail, but normal (e.g. Web) traffic may pass.

• Speedtest. The next tests are ‘speedtests’. For this, we use the iPerf function (iPerf v2). In a corporate context, this should be an iPerf server instance set up somewhere in the core of the network, probably a data center. Because it is a (TCP) throughput test, the figures here will never be more than about 50% of the ‘link speed’ figure for the Wi-Fi connection. The iPerf client in the app is configured to run in bidirectional mode, first an upstream test then downstream.

爱郎的目的是支持Wi-Fi功能的Andr​​oid装置的技术和不太技术拥有者。它显示了Wi-Fi（“本地”）连接的健康状况，并测量了“广域”连接到服务器在网络中更深的特点。它可以用来回答这样的问题：
•有什么毛病我今天的Wi-Fi？
•如何强是我的Wi-Fi信号？
•是否有无线干扰的证据？
•是否在Wi-Fi连接问题，或者在互联网（或企业网络）上？
•是将数据中心的不够好，我运行的应用程序的企业的整体连接？

对于管理员指南，其中包括设置您的Aruba网络等等的mDNS（AirGroup）指令会自动配置了AirWave和iperf的服务器的目标地址（可以为下载而无需用户interverntion不同网络上工作的应用程序）看到空中观察管理指南托管阿鲁巴Airheads社区网页http://community.arubanetworks.com/t5/Aruba-Apps/New-Admin-Guide-for-the-AirO-Air-Observer-app/td-p/229749 （或去community.arubanetworks.com并搜索“爱郎”）。
 
评出的“无线网络连接和局域网”屏幕的部分显示三次测量，展示了Wi-Fi连接的健康状况：

•以dBm信号强度或RSSI
我们首先测量信号强度，因为如果它是可怜的，没有得到良好的连接的机会。补救的办法，简单来说，就是要更接近接入点。
 
•链接速度。
低链路速度通常的原因是信号强度较差。但有时，甚至当信号强度良好，对从Wi-Fi和非Wi-Fi源的干扰空中干扰降低连接速度。
 
•平。这是大家熟悉的ICMP回送试验网络的默认网关。
低链路速度往往会导致长平倍。如果链接速度是好的，但坪放缓，这可能是一个很长的路在一条狭窄的宽带连接的默认网关。
 
屏幕显示的下部从设备和服务器计算机之间的测试结果，通常是在公司数据中心或在互联网上。此服务器的地址在“设置”中配置的号码来选择 - 但一旦选择了，只有一台服务器地址用于这些测试。

•平。有一个平测量到该服务器。这是相同的ping测试同上，但因为这一个越走越远，将通常（但并不总是）需要更长的时间。同样，20毫秒将是快速和500毫秒将是缓慢的。
有些网络可能会阻止ICMP（平）流量。在这种情况下，广域网ping测试总是会失败，但正常的（如网络）流量可能通过。
 
•SPEEDTEST。接下来的测试是“speedtests”。对于这一点，我们使用的Iperf功能（iperf的V2）。在企业上下文中，这应该是一个的Iperf服务器实例中的网络的核心，可能是一个数据中心设置的某个地方。因为它是一个（TCP）吞吐量测试，数字，这里将永远是比对Wi-Fi连接的“链接速度”数字约为50％。在应用程序的iperf的客户端配置为双向模式下运行，先上行测试然后是下游。