User`s guide

ZENA™ Wireless Network Analyzer User’s Guide

The data can be viewed and analyzed to some degree while real-time monitoring is in

progress. For more advanced analysis, real-time monitoring must be halted by clicking

the Stop button or selecting the Operation>Stop Sniffing/Playback

menu option.

To save the data for analysis at a later time, click the Save button or select the

File>Save

menu option.

3.3.1.1 TIME-STAMPS

The displayed time-stamp is the time from the end of the previous message until the

end of the current message. The time-stamp is displayed in microseconds, and can

represent up to 71 minutes before rolling over.

3.3.2 Analyzing Previously Captured Data

When real-time network monitoring is stopped, the ZENA Wireless Network Analyzer

can be used to perform further analysis of the captured data. If real-time monitoring is

in progress, halt it by clicking the Stop button or by selecting the

Operation>Start Sniffing/Playback

menu option. To analyze previously captured data,

click Open or select File>Open

and select the desired data file.

3.3.2.1 PACKET PLAYBACK

Captured data can be played back as if it were being received in real time. Playback

can begin at any point in the data. To select the first packet to play back, click the

desired packet in the Packet Sniffer window. The selected packet will then be outlined

in red.

Select the desired playback speed using the “Speed” combo box. Available options are:

TABLE 3-17: ZigBee™ PROTOCOL PACKET PLAYBACK SELECTION

Packet playback is especially useful when using the filter option and performing more

advanced network analysis.

Note: If playback is currently in progress (the Start button is disabled and the

Stop button is enabled), a packet cannot be selected by clicking it.

Packet Option Description

x0.01 Packets are played back approximately 100 times faster than they were received.

x0.1 Packets are played back approximately 10 times faster than they were received.

x1 Packets are played back at approximately the same rate as they were received.

x10 Packets are played back approximately 10 times slower than they were received.

x100 Packets are played back approximately 100 times slower than they were received.

2 sec Packets are played back at 2-second intervals between packets.

Instant Packets are played back as quickly as possible.

Manual Packet playback is controlled by the up and down arrow keys.