EXFO ETS-1000 - Manual (Page 13)

Introducing the ETS-1000
Ethernet Tester Analyzer 5
Status bar Description
The type of test running via port A(B) is marked in the status bar with the
following abbreviations:
THR Throughput Analysis
LAT Latency Analysis
BTB Back-to-Back Test
FRL Frame Loss Test
LB1 Loopback at the Physical Layer (Layer 1).
LB2 Loopback at the Data Layer (Layer 2).
LB3 Loopback at the Network Layer (Layer 3).
LB4 Loopback at the Transport Layer (Layer 4).
BER Bit Error Rate Test
PJ Packet Jitter Analysis
GEN Test Flow Generation
J+G Packet Jitter Analysis and Test Flow Generation on the
Same Port
PTH Pass Through Mode