M2SFP+T Advanced timing test module for Synchronous Ethernet test applications


The M2SFP+T is an advanced timing test module for Synchronous Ethernet test applications.

Advanced timing test module for Synchronous Ethernet test

The M2SFP+T is a wire-speed 2-port 10 Gigabit Ethernet test module with advanced timing features developed for Synchronous Ethernet test applications at Layers 2-3(1). It is available for both the 4U 12-slot XenaBay chassis and the robust transportable 1U XenaCompact chassis.

The M2SFP+T comes complete with Xena’s free XenaManager-2G software – an easy-to-use GUI for handling both routine and advanced test schedules that includes XenaScripting, Xena2544, Xena1564, Xena3918 and Xena2889.

Interface category10G Ethernet
Number of test ports2 x 10G
Interface options2 x 10GBASE-SR / LR / ER / Direct Attached Cable (DAC)(3)
Number of transceiver module cages2 x SFP+
Port statistics(2)Link state, FCS errors, pause frames, ARP/PING, error injections, training packet
All traffic: RX and TX Mbit/s, packets/s, packets, bytes
Traffic w/o test payload: RX and TX Mbit/s, packets/s, packets, bytes
Adjustable Inter Frame Gap (IFG)Configurable from 16 to 56 bytes, default is 20B (12B IFG + 8B preamble)
Transmit line clock adjustmentFrom -400 to 400 ppm in steps of 0.001 ppm (shared across all ports)
Transmit line rate adjustmentAbility to adjust the effective line rate by forcing idle gaps equivalent to -1000 ppm (increments of 10 ppm)
ARP/PINGSupported (configurable IP and MAC address per port)
Field upgradeableSystem is fully field upgradeable to product releases (FPGA images and Software)
Two real-time histograms per port. Each histogram can measure one of RX/TX packet length, IFG, jitter, or latency distribution for all traffic, a specific stream, or a filter
Tx disableEnable/disable of optical laser or copper link
IGMPv2 multicast join/leave)IGMPv2 continuous multicast join, with configurable repeat interval
Oscillator characteristics• Initial Accuracy is 3 ppm
• Frequency drift over 1st year: +/- 3 ppm (over 15 years: +/- 15 ppm)
• Temperature Stability: +/- 20 ppm (Total Stability is +/- 35 ppm)
Selectable Tx line rateTx line rate can be referenced to either local clock oscillator (adjustable in steps of 1 ppm), SMA input, or from the Rx line rate for Synchronous Ethernet applications. The Tx line rate complies with SONET/SDH/SyncE with respect to wander and jitter.
Jitter attenuationSelectable loop bandwidth for jitter attenuation: 114 Hz, 229 Hz, 460 Hz, 1864 Hz, or 7834 Hz loop bandwidth
SMA input• 10.0 MHz, or 2.048 MHz Tx line rate reference clock SMA input (Drift/wander is passed from SMA input to Tx line rate)
• 250mV-2.5V, loaded 50 ohm
SMA output• Selectable as either Tx Line Rate Reference (10 MHz, 2.048 MHz, or 156.25 MHz), a trigger output indicating Ethernet start of frame, slave mode pass-through (SMA output = SMA input), or as the Recovered Rx clock(s)
• 700mV, loaded 50 ohm
Number of transmit streams per port256 (wire-speed). Each stream can generate millions of traffic flows through the use of field modifiers.
Test payload insertion per streamWire-speed packet generation with timestamps, sequence numbers, and data integrity signature optionally inserted into each packet.
Stream statistics(2)TX Mbit/s, packets/s, packets, bytes, FCS error, Pause
Bandwidth profilesBurst size and density can be specified. Uniform and bursty bandwidth profile streams can be interleaved
Field modifiers16-bit header field modifiers with inc, dec, or random mode. Each modifier has configurable bit-mask, repetition, min, max, and step parameters. 5 modifiers per stream.
Packet length controlsFixed, random, butterfly, and incrementing packet length distributions. Packet length from 56 to 16384 bytes
Packet payloadsRepeated user specified 1 to 18B pattern, a 8-bit incrementing pattern
Error generationUndersize length (56B min.) and oversize length (16384 max.) packet lengths, injection of sequence, misorder, payload integrity, and FCS errors
TX packet header support and RX autodecodesEthernet, Ethernet II, VLAN, ARP, IPv4, IPv6, UDP, TCP, LLC, SNAP, GTP, ICMP, RTP, RTCP, STP, MPLS, PBB, or fully specified by user
Packet scheduling modes- Normal (stream interleaved mode). Standard scheduling mode, precise rates, minor variation in packet inter-frame gap.
- Strict Uniform. New scheduling mode, with 100% uniform packet inter-frame gap, minor deviation from configured rates.
- Sequential packet scheduling (sequential stream scheduling). Streams are scheduled continuously in sequential order, with configurable number of packets per stream.
- Burst. Up to 10000 packets per stream are organized in bursts. Bursts from active streams form a burst group. The user specifies time from start of one burst group till start of next burst group.
Number of traceable Rx streams per port2016 (wire-speed)
Automatic detection of test payload for received packetsReal-time reporting of statistics and latency, loss, payload integrity, sequence error, and misorder error checking
Jitter measurementJitter (Packet Delay Variation) measurements compliant to MEF10 standard with 8 ns accuracy. Jitter can be measured on up to 32 streams.
Stream statistics(2)- RX Mbit/s, packets/s, packets, bytes.
- Loss, payload integrity errors, sequence errors, misorder errors
- Min latency, max latency, average latency
- Min jitter, max jitter, average jitter
Latency measurements accuracy±8 ns (opto/elec).
Latency measurement resolution 8 ns (Latency measurements can calibrate and remove latency from transceiver modules)
Number of filters:- 6 x 64-bit user-definable match-term patterns with mask, and offset
- 6 x frame length comparator terms (longer, shorter)
- 6 x user-defined filters expressed from AND/OR’ing of the match and length terms.
Filter statistics(2)Per filter: RX Mbit/s, packets/s, packets, bytes.
Capture criteriaAll traffic, stream, FCS errors, filter match, or traffic without test payloads
Capture start/stop triggersCapture start and stop trigger: none, FCS error, filter match, payload error
Capture limit per packet16 – 16384 bytes
Wire-speed capture buffer per port16 kB
Low speed capture buffer per port (10Mbit/sec)4096 packets (any size)
(1)These advanced timing features are only supported for 1000BASE-X optical SFP and RAD SFP ToC transceivers.

(2)Counter size: 64 bits

(3)The interface implements discrete PHY devices with built in EDC support that employs sophisticated signal processing techniques to recover a 10 Gbps signal that has travelled over a dispersive Copper Direct attach cable and restore a bit-error rate of 10-12 or better.


  • 2 x 10G ports
  • Adv. timing features for SynchE testing
  • Price/performance
  • Robust form factor
  • Ease of use
  • Free software
  • Free 12-month hardware warranty
  • 36 months free software updates
  • Free tech support for product lifetime

Includes this free software:

XenaManager-2G software xena-scripting-270 xena-2544-270 xena-2889-270 xena-1564-270 xena-3918-270

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