Teledyne LeCroy X-STREAM OSCILLOSCOPES Remote Control - Manual (Page 40)

P A R T O N E : A B O U T R E M O T E C O N T R O L
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ISSUED: February 2005 WM-RCM-E Rev D
Scope Rear Panel
The LAN connector is shown in the illustration above (item 8).
• Supports IEEE 802.3 Ethernet standards
• Supports 10Base-T and 100Base-T
Ethernet Connection
The instrument operates over a standard 10Base-T/100Base-T Ethernet connection. The instrument can be
plugged into a network or operated from a direct connection to a host computer. A different type of cable is
required for each of these connections. For a direct connection to the PC, a crossover cable is required,
whereas the network connection is made using a straight cable.
Headers for LAN Data Transfers
The format of the header sent before each data block, both to and from the instrument, is set out in the
following table:
Byte # Purpose
0 O p e ra t ion
1 H e a d e r V e r s ion
2 S equen ce N um b er *
3 Spare (reserved fo r f u t u r e e x p a n s ion )
4 B lo ck L en g th, (b yt es o f dat a) , LS B
5 B lo ck L en g th (b yt es o f d ata )
6 B lo ck L en g th (b yt es o f d ata )
7 B lo ck L en g th, (b yt es o f dat a) , MS B
* The sequence number is used to synchronize write/read operations to simulate 488.2
“discard unread response” behavior. Valid range is 1 to 255 (zero is omitted
intentionally).