Viavi Certifier40G User Manual page 15

According to the ISO/IEC standards, the 2-jumpers testing method is not compliant,
hence the selection for 2-jumpers configuration will be disabled when an ISO limit is
selected.
1 Jumper, Single-ended
2 Jumpers, Single-ended
3 Jumpesr, Single-ended
1 Jumper, Dual-ended
2 Jumpers, Dual-ended
3 Jumpers, Dual-ended