EXFO AXS-200/850 Ethernet Test Set - Manual (Page 108)

BERT
98 AXS-200/850
Global Configuration
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Frame Size (Bytes): Set the frame size up to 9600 bytes. The default
value is 64 bytes. By default, No VLAN is selected. If Ethernet framing
is selected, the minimum frame size is 48.
If Ethernet/IPv4/UDP framing is selected, the minimum frame size is
according to the number of VLAN layers:
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No VLAN = 64 bytes
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One VLAN = 68 bytes
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Two VLAN = 72 bytes
If Ethernet/IPv6/UDP framing is selected, the minimum frame size is
according to the number of VLAN layers:
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No VLAN = 84 bytes
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One VLAN = 88 bytes
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Two VLAN = 92 bytes
Note: The frame size can be changed at any time whether or not a test is running.
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Test Pattern: Select a test pattern. Choices are as follows:
PRBS 2
9
-1
PRBS 2
11
-1
PRBS 2
15
-1
PRBS 2 20 -1
PRBS 2
23
-1
PRBS 2
31
-1 (default)
User Pattern: Go to the next field to define the user pattern
parameter that indicates the test pattern to be used. The user
pattern is a 32-bit (4-byte) value. The default value is 0.