BERT
Bit error rate testers (BERTs) are usually the initial step for communications testing. These instruments generate digital test patterns, typically pseudorandom binary sequences (PRBSs), that drive devices under test (DUTs). Following the transmission of the signal through the link, the receiver in the BERT captures the signal. This setup can be used for multiple testing purposes, such as to evaluate the performance of a transmitter, a receiver, or an optical link.
MultiLane supports general-purpose BERTs that connect through fixtures and coax cables, as well as BERTs that present an MSA-compliant standard interface.
A BERT needs to be tailored to the characteristics of the DUT. Key parameters include:
- Baud rate
- Number of channels
- Modulation format (e.g. NRZ, PAM4, etc.)
- Test pattern (e.g. PRBS15 )
- Signal amplitude
- Port type (e.g. QSFP-DD)
- Form factor (e.g. portable, chassis, etc.)
| Part number | Max baud rate (GBd) | Channels | Pattern length | Data format | Amplitude max (mVpp diff.) | Other |
|---|---|---|---|---|---|---|
ML4039E-ATE
|
58 | 4 | up to PRBS31, PRBS13Q, SSPRQ | PAM4/NRZ | 800 | ATE |
ML4039-BTP
|
30 | 4 | up to PRBS31 | NRZ | 800 | Benchtop |
ML4039B
|
1.25 - 29 | 4 | up to PRBS(Q)31 | PAM4/NRZ | 800 | Benchtop |
ML4039-JIT-BTP
|
30 | 4 | up to PRBS31 | NRZ | 2200+ | Jitter Impairments, benchtop |
ML4039D
|
29.5 | 4 | up to PRBS31Q | PAM4/NRZ | 1500 | Benchtop |
ML4039E
|
58 | 4 | up to PRBS31, PRBS13Q, SSPRQ | PAM4/NRZ | 800 | Benchtop |
ML4039EN
|
58 | 4 | up to PRBS31, PRBS13Q, SSPRQ | PAM4/NRZ | 800 | Benchtop, crosstalk noise injection |
ML4079D
|
29.5 | 8 | Up to PRBS 31, PRBS13Q, SSPRQ | PAM4/NRZ | 1500 | Benchtop |
ML4079E
|
58 | 8 | PRBS13Q, 31Q and SSPRQ | PAM4/NRZ | 700 | Benchtop |
ML4079EN
|
58 | 8 | PRBS13Q, 31Q and SSPRQ | PAM4/NRZ | 1200 | Benchtop, Random Noise and Jitter Injection |
| Part number | Max baud rate (GBd) | Channels | Pattern length | Data format | Amplitude max (mVpp diff.) | Other |
|---|---|---|---|---|---|---|
ML4070-SFP
|
30 | 3×1 | PRBS 7, 9, 15, 23, 31 | NRZ | 800 | SFP28 Compliance Tester, Stand Alone |
ML4070-QSFP
|
30 | 3×4 | PRBS 7, 9, 15, 23, 31 | NRZ | 800 | QSFP28 Compliance Tester, Stand Alone |
| Part number | Max baud rate (GBd) | Channels | Pattern length | Data format | Amplitude max (mVpp diff.) | Other |
|---|---|---|---|---|---|---|
ML4054E
|
29 | 8 | Up to PRBS58 | PAM4/NRZ | 1200 | Manufacturing, benchtop |
|
ML4054B
|
29 | 8 | Up to PRBS31(Q) | PAM4/NRZ | 800 | Manufacturing, benchtop |
ML4054B-LP
|
29 | 8 | Up to PRBS31(Q) | PAM4/NRZ | 800 | Low profile version for thermal testing |
| Part number | Max baud rate (GBd) | Channels | Pattern length | Data format | Amplitude max (mVpp diff.) | Other |
|---|---|---|---|---|---|---|
ML407-PAM
|
56 | 1 | Up to PRBS31(Q) | PAM4/NRZ | 1000 | PAM4 Jitter Generator, for use with any of the PAM4 BERTs such as ML4039D/E |
