EXFO FTB/IQS-85100G Packet Blazer for FTB-500/IQS-600 - Manual (Page 284)

Test Functions
274 FTB/IQS-85100G
Packet Capture
Frame Length
Specifies the length of the frame that will be saved in the capture buffer.

Complete captures the entire frames.

Truncated captures only the first specified number of bytes per frame.
Use either the Bytes field to manually enter the number of bytes per
frame or tap on the Truncation Calculator button for automatic bytes
per frame calculation.
Bytes allows the selection of the number of bytes that will be saved in
the capture buffer for each frame captured. Choices are from 14
(default) to 1536 bytes.
Truncation Calculator allows to easily determine at what byte to
truncate the frame captured by selecting the desired frame header
components.

Header Layer specifies the header layer level: Layer 2 (Ethernet),
Layer 3 (IP), or Layer 4 (TCP/UDP).

IP Version specifies the IP version: IPv4 or IPv6.

Encapsulation parameters are optional and not selected by
default.
VLAN check box, when selected, enables VLAN and allows to
select the number of VLANs: 1, 2, or 3.
MPLS check box, when selected, enables MPLS and allows to
select the number of labels: 1 or 2.

Additional Payload (bytes) allows to optionally select the number
of additional payload bytes (1 to 1400 bytes).

Total Number of Bytes indicates the number of bytes for the
selected frame parameters. This value will be used as the
truncated frame length (Truncated field).