EXFO FTB/IQS-88000 Series Power Blazer for FTB-2/2Pro/500/IQS-600 - Manual (Page 190)

Test Setup - Test Configurator, Timer, and System
178 FTB/IQS-88000 Series
RFC 2544 - Subtests

Frame Loss Threshold (%) sets the threshold
1
value of frame loss.
The range is from 0.000 to 100.000 (default is 0.100) and it applies to
all frame sizes when applicable.

Latency Threshold / Round-Trip Latency Threshold sets the
threshold value as the maximum delay in ms or μs. The range is from
0.5 to 8000.0 ms (default is 125.0 ms) and it applies to all frame sizes
when applicable. For Dual Test Set, only available with Round-Trip
Latency Measurement Mode (see Latency Configuration on
page 175).

One-Way Latency Threshold, available for Dual Test Set with
One-Way Latency Measurement Mode (see Latency Configuration on
page 175), sets the maximum one-way latency value in millisecond,
allowed for all frame sizes: 0.005 to 500 ms (default is 125 ms).

Latency Unit allows to either select ms or μs as the reference unit for
the Latency Threshold.
1. The verdict is PASS when the received/measured value is lower or equal to the threshold value.