PayloadPayload
The Payload layer allows you to set the pattern of the Payload of the
transmitted frames.
Open the Payload patternPayload pattern drop-down menu to select the relevant pattern.
Only the following options are available swhen the interface bit rate is 200 Gbps or
400 Gbps.
BERT: PRBS31PRBS31 and User 32 bitUser 32 bit
Mon./Gen.: PRBS9PRBS9
RFC 2544, Traceroute: PRBS9PRBS9, PRBS31PRBS31, and User 32 bitUser 32 bit
FOXFOX: ASCII code bit sequence of "THE QUICK BROWN FOX JUMPS OVER
THE LAZY DOG".
55555555: Repetition of "0101010101010101".
PRBS9PRBS9 to PRBS31PRBS31: Pseudo-random bit sequence. For PRBS9, its bit length is
511 (=2
9
-1).
HF TESTHF TEST: High frequency test pattern. (Defined in IEEE802.3 Annex 48A)
CRPATCRPAT: Continuous random test pattern. (Defined in IEEE802.3 Annex 48A)
JTPATJTPAT: Jitter tolerance test pattern.
SPATSPAT: Supply noise pattern.
User 32 bitUser 32 bit: Repetition of the user defined 32 bits.
If you select the User 32 bitUser 32 bit pattern, a button appears with which you can open
the Pattern EditorPattern Editor dialog box.
Selecting Cross pattern at successive framesCross pattern at successive frames sets the payload in Ethernet
frames as successive payload pattern through multiple frames.
Cross pattern at successive framesCross pattern at successive frames is available for BERT application only.
Cross pattern at successive framesCross pattern at successive frames check box is always selected when the bitrate is
200 Gbps or 400 Gbps.
Following is the explanation of an example when:
Payload pattern is set to PRBS15PRBS15.
In this case, the pattern length is 32767 bit (≈ 4096 byte).
Frame size is set in Stream on
Test
setup screen so that the payload
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