Teledyne LeCroy FireInspector - Users Manual - Manual (Page 105)

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CATC F IRE I NSPECTOR 2.01 C HAPTER 7
User’s ManualTraffic Generation
7.2 Defining Data Blocks
To define a data block within an asynchronous or isochronous packet, use the following
syntax:
data=(12345678 90ABCDEF DC134078 11CA7065)
Quadlets of the data field can be wrapped to the next line.
7.3 Maximum Block Size for Asynchronous Data
The maximum block size for asynchronous data is shown below:
7.4 Stress Testing With Asynchronous Data
FireInspector's Traffic Generator cannot be used to create stress tests with asynchronous
data because packet generation with this type of data is punctuated by long delays.
Note: This limit applies only to asynchronous data. Stress testing can be done with isochronous data.
7.5 Generating Isochronous Traffic
FireInspector is capable of generating four simultaneous isochronous channels within each
isochronous cycle. Within a .txg file, a maximum of four such isochronous channels can be
defined. Multiple packets can use the same channel. Subsequently throughout the
generation, the four channels can be turned on and off with a control packet key by
referencing the respective channel numbers. When an isochronous channel is turned on, the
analyzer will generate the defined isochronous packet once per cycle on every isochronous
channel. If the isochronous channels are left on at the end of the file, they will continue to
generate traffic until the generation is manually stopped by the operator.
channel 6Isochronous channel (isochronous data block packet only)
sy 4 Synchronization code (isochronous data block packet only)
Cable Speed Maximum Data Payload Size (in bytes)
100 Mb/s 512
200 Mb/s 1024
400 Mb/s 2048
Table 7-5: Keys for Isochronous Packet Fields (Continued)
Key Code Size (bits) Description