13-16
IM AQ1300-01EN
Unit Setup Screen
Set the unit of the Tx load rate.
IR (effective speed: bps), UIR (data rate), % (ratio of the data rate to the Tx rate)
Frame
Preamble
Data
FCS
Frame
Frame
Frame
Frame
Frame
Frame
Frame
• • • • •
Frame
IFG
Amount of traffic when the unit is UIR
or % (100%+α)
Frame
Preamble
Data
FCS
Frame
Frame
Frame
Frame
Frame
Frame
Frame
• • • • •
IFG
Amount of traffic
when the unit is IR
8 bytes
1514 bytes (ex.) 4 bytes
12byte
Example of when Tx rate is 1 Gbps (unit: UIR or %)
The amount of traffic is approximately 1 Gbps.
(Frame + IFG)×number of frames per second×8
The amount of traffic is approximately 987 Mbps.
(Data + FCS)×number of frames per second×8
Example of when Tx rate is 1 Gbps (unit: IR)
IFG is not included when the percentage is 100.
Number of frames per second: Approx. 81274
Number of frames per second: Approx. 81274
1514 bytes (ex.) 4 bytes
Frame Measurement
Set the condition for the reference used to measure the frame delay variation (FDV).
• Previous Frame
The maximum, minimum, and average are calculated from the delay time of the frame received
previous to the measurement target.
• Min. Threshold
The maximum, minimum, and average are calculated from the minimum delay time recorded
within the measurement duration.
• User
The maximum, minimum, and average are calculated from the specified delay reference.
If the calculated result is negative, it is calculated as zero.
FD Reference
Specify the delay time that will be the reference when measuring the delay variation using user-
defined conditions.
Range: 0.000 ms to 1000 ms
13.5 Configuring Common Y.1564 Test Items