For PAM4 interfaces or SyncE Jitter testing, specific modules MUST be used. These modules have been tested by Calnex to ensure they fulfil the requirements for functionality and performance needed to enable correct operation and guarantee the integrity of the timing measurements. Use of other modules may result in a failed test or incorrect result.
For SyncE Wander and PTP on non-PAM4 interfaces, most modules should work correctly; known exceptions are detailed below. If you have a module that is not recognised, please let us know.
PAM4 200G modules MUST be used with the PAM4 200G interfaces.
PAM4 400G modules MUST be used with the PAM4 400G interfaces.
PAM4 400G modules may appear to operate correctly at 200G, but outliers (spikes in time error) may be seen, which will invalidate any results. Modules that don’t support 200G will show a warning indicating "not rate conformant" in the neo GUI.
DAC assemblies must not be used with Paragon-neo. Paragon-neo is not designed for use with DACs, which means that such links are unlikely to work and there is a possibility of damaging your instrument. Such damage would not be covered under CSS.
PAM4
To achieve optimal timing performance when testing using PAM4 optical interfaces, the specific optical modules as listed below MUST be used:
400G PAM4 | ||||
Interface | Reach | Manufacturer | Part Number | Comment |
---|---|---|---|---|
QSFP-DD | LR8 | II-VI | FTCD1323E1PCL | Use at 400G rate only. |
QSFP-DD | FR8 | II-VI | FTCD1333E1PCL | Use at 400G rate only. |
QSFP-DD | SR8 | II-VI | FTCD8613E1PCM | Use at 400G rate only. |
QSFP-DD | FR4 | II-VI | FTCD4313E1PCL | Use at 400G rate only. |
200G PAM4 | ||||
Interface | Reach | Manufacturer | Part Number | Comment |
QSFP56 | SR4 | II-VI | FTCC8612E1PCM | |
QSFP56 | FR4 | II-VI | FTCC1112E2PCL | |
100G PAM4 | ||||
Interface | Reach | Manufacturer | Part Number | Comment |
QSFP28 | DR | Innolight | TR-ZC13H-N00 | 100G PAM4 optical interface, instrument side is QSFP28 NRZ. Module supports measurement accuracy of ±15ns. |
QSFP28 | FR | Innolight | TR-ZC13T-N00 | 100G PAM4 optical interface, instrument side is QSFP28 NRZ. Module supports measurement accuracy of ±15ns. |
QSFP28 | LR | Innolight | TR-ZC13L-N00 | 100G PAM4 optical interface, instrument side is QSFP28 NRZ. Module supports measurement accuracy of ±15ns. |
50G PAM4 | ||||
Interface | Reach | Manufacturer | Part Number | Comment |
SFP56 | LR | Gigalight | LR GSS-SPO0500-LRCZ | |
SFP56 | SR | II-VI | FTLF8556E1BCL |
SyncE Jitter
The modules listed below are those that MUST be used for SyncE jitter testing. These modules have been tested by Calnex to ensure that clock recovery can be bypassed and that they have sufficient bandwidth to allow the jitter performance of the device to be tested accurately. These modules are also known to operate correctly for PTP and SyncE Wander.
100G | ||||
Interface | Reach | Manufacturer | Part Number | Comment |
---|---|---|---|---|
QSFP28 | LR4 | Finisar | FTLC1151RDPL | No longer available from vendor. |
QSFP28 | LR4 | Finisar | FTLC1154RDPL | |
QSFP28 | SR4 | Finisar | FTLC9551REPM | |
CXP | SR10 | Any Reputable Vendor | ||
40G | ||||
Interface | Reach | Manufacturer | Part Number | Comment |
QSFP+ | LR4 | Finisar | FTL4C1QE2C | |
25G and 10G | ||||
Interface | Reach | Manufacturer | Part Number | Comment |
SFP28 & SFP+ | LR | Finisar | FTLF1436W4BTV | |
SFP28 & SFP+ | LR | Finisar | FTLF1436P3BCL | |
SFP28 & SFP+ | SR | Finisar | FTLF8536W4BTV | |
SFP28 & SFP+ | SR | Finisar | FTLF8536P4BCL | |
SFP28 & SFP+ | SR | Finisar | FTLF8538P4BCL | |
1G | ||||
Interface | Reach | Manufacturer | Part Number | Comment |
SFP | Short (SX) | Finisar | FTLF8519P3BNL |
SyncE Wander and PTP
For PTP and SyncE Wander on non-PAM4 interfaces, the following modules are known to operate correctly (in addition to those above).
100G | ||||
Interface | Reach | Manufacturer | Part Number | Comment |
CFP2 | LR4 | Finisar | FTLC1141RDNL | Rev 1 Paragon-100G only |
CFP2 | LR4 | Oclaro | TRB5E21FNF-LF002 | Rev 1 Paragon-100G only |
CFP2 | LR4 | Lumentum (JDSU) | JC2-10LM4AA1 | Rev 1 Paragon-100G only |
CFP4 | LR4 | Finisar | FTLC1121RDNL | Paragon-100G only |
QSFP28 | LR4 | Finisar | FTLC1151RDPL | Now obsolete |
QSFP28 | LR4 | Finisar | FTLC1154RDPL | Replacement for FTLC1151RDPL |
25G and 10G | ||||
Interface | Reach | Manufacturer | Part Number | Comment |
SFP28 & SFP+ | SR | Finisar | FTLF8536P4BCV |
For SyncE wander and PTP at 1G and 10G we expect all correctly configured modules to operate correctly. At other line rates we expect most correctly configured modules to operate correctly.
What does "correctly configured" mean?
Paragon-neo reads information from the module when it is inserted. Paragon-neo expects the modules to conform to the relevant specification (SFF) for that module type. If the module does not conform to the specification (for a number of specific fields), then the module will not be considered usable.
Some modules with the same part number are programmed differently. This means that it is difficult to state definitively whether any given module will work or not.
Known Exceptions
High Power Modules
Some high power modules appear to have their transmitters disabled by default. To enable the transmitter, it is necessary to write to specific register locations in the module. If you are using a high power module and the module is recognised by Paragon but you cannot establish a link when connected from Paragon port 1 to port 2, please raise a ticket in the Calnex Service Desk (if you have valid CSS) or contact support@calnexsol.com.
These modules can be used with Paragon - enabling the transmitters is performed using a separate utility.
Other
Hirose, LTD1302-BH: Module does not support multi-byte read. Supported by Paragon-neo version 01.00 and later
FS, SFP28-25GSR-85: Some of these modules are configured in a way that Paragon-neo does not recognise; others appear to be OK
Finisar, FTLX1472M3BCL: These modules support a range of rates from 8.5Gb/s to 11.3Gb/s for Fibre Channel, SDH/SONET and 10GbE. When the CDR is disabled (which Paragon will do under certain circumstances), the module will set the CDR for 8.5Gb/s Fibre Channel and so no link will be able to be established.