Albedo Zeus – IEC 61850 / PRP / PTP / C37.94 Tester

• World’s first PRP/PTP tester – participant in Plugfest ISPCS 2025
• Full IEC-61850 analysis – real-time capture and decoding of PRP, PTP, NTP, GOOSE, SV, MMS
• PRP node emulation (DANs and SANs) – multi-stream test traffic, redundancy statistics, LAN A/B skew
• Legacy interface support (IRIG-B, T1, E1, 1PPS, C37.94) – the ideal tool when migrating to IEC-61850
• PTP wander analysis and generation – TIE, MTIE, TDEV in real time
• Full C37.94 analysis and emulation – RTU/IED optical links (multi-mode and single-mode)
• Hot-swappable modules – C37.94, Datacom, VF, G703, E1/T1 – expansion without replacing the device
• Built-in Rubidium clock with GNSS – accuracy of ±50 ns after 24 h of GPS synchronization
• Weight 1.9 kg, battery power (Li-Po), touchscreen, VNC control

Modern power substations require precise synchronization from microseconds to milliseconds. Zeus addresses the entire spectrum of requirements:

• Latency minimization for the SV, GOOSE and PRP protocols
• Data acquisition on IED, RTU and MU devices
• Verification of SCADA communication and the MMS protocol
• Power line protection schemes
• Event logging and synchrophasors in the WAN

PRP – Parallel Redundancy Protocol

Zeus emulates one or many PRP nodes – both Dually Attached Nodes (DANs) and Singly Attached Nodes (SANs). It enables full redundancy testing in IEC-61850 environments:

• Generation and reception of multi-stream test traffic in a PRP environment
• Performance metrics: latency, frame loss, throughput
• PRP statistics, node discovery, redundancy verification, frame counters
• Analysis of latency skew between LAN A and LAN B
• Event Logger – decoding and reporting of PRP fields
• Testing of the SV, GOOSE and PTP protocols over a PRP network
• PTP Master/Slave emulation over PRP – Time Error (TE) measurement on LAN A and LAN B, port skew

GOOSE – Generic Object Oriented Substation Event

• Decoding and analysis of GOOSE messages
• GOOSE protocol scanning: GoCBName, GoID, DatSet
• GOOSE frame counter for the active flow and all flows
• Latency: current, avg., min., max., range and std. deviation

SV – Sampled Values

• Decoding and analysis of SV messages
• SV protocol scanning with svID population
• Measurement of sampling rate and sample counter
• Latency: current, avg., min., max., range and std. deviation

The C37.94 module enables full testing of optical teleprotection links between an RTU and IED in the IEEE C37.94 standard. Available SFP versions: multi-mode 850 nm (up to 1500 m) and single-mode 1310 nm (up to 10 km).

• Modes: unframed/framed, endpoint or terminal, PASS/FAIL results
• BER, G.821, event detection and insertion – alarms: LOS, AIS, LOF, RDI, LSS
• Round Trip Delay and One-way Delay (GPS) – frequency offset (ppm)
• Jitter and wander analysis – MTIE and TDEV with 100 ps resolution
• Traffic generation n×64 kb/s up to 768 kb/s – Optical Power Meter