Provides deep insights to deploy
and verify Utility Communications

Zeus front

Zeus system

GOOSE, SV, MMS protocol analysis
and comprehensive latency tests

GOOSE protocol analysis

Supports legacy and new standards
to assure IEC-61850 migration


PTP wander analysis and generation


Atomic clock to test PTP / NTP


Hot-swappable modules


Zeus is a tester designed to install and maintain the communications in the power industry. It supports legacy and new generation interfaces in order to verify Ethernet / IP, PTP, SyncE, ToD, IRIG-B, T1 / E1, C37.94, RS-232, G703 and protocols such as GOOSE, SV or MMS, therefore you will get a perfect vision and control of your infrastructures improving protection and data acquisition.


In substation automation many resources require accurate synchronization ranging from microseconds to milliseconds:

  • Applications that use SV / GOOSE and need to minimize latency.
  • Data acquisition at IED, RTU and MU.
  • SCADA and the MMS protocol.
  • Line protection schemes.
  • Events recording.
  • Synchro-phasors deployed across the WAN to monitor the power grid.

Zeus has a complete set of features for time commissioning by means of measurements, analysis and protocol emulations of PTP, IRIG-B, GPS, SyncE, T1/E1, 1PPS


Multiport Interfaces

  • A:B ports: 2 x SFP (100MbE, 1GbE)
  • A:B ports: 2 x RJ45 (10MbE, 100MbE, 1GbE)
  • C:D ports: Balanced 2 x RJ45 (T1/E1)
  • C:D ports: Unbalanced 2 x BNC (T1/E1)
  • GNSS Port: SMA female (GNSS)
  • PPS Ports: 3 x SMB female (Time refs.)

  • Hot swappable modules

  • C37.94
  • Datacom DTE/DCE: V.11/X.24, V.24/V.28, V.24/V.35, V.24/V.11 (V.36/RS449)
  • VF Port
  • Codirectional - G703
  • E1/T1
  • Optical to Electrical

  • Operation / Results

  • Graphic and tabular wander results
  • Navigation: by touch screen, keyboard, mouse
  • Remote Control: by VNC
  • Storage capacity: one week of results
  • Export: results in pdf/txt/csv through USB interface or SD card
  • Report export to remote host through Ethernet / IP
  • Ergonomics

  • Size: 260 x 160 x 63 mm
  • Weight: 1.9 kg
  • Light and easy to carry in a small bag
  • Start: Manual / Timed with optional password
  • Batteries

  • Two pack of Lipo batteries always included
  • Large duration that also depends on operation, conditions, aging, etc.
  • Time / Clocks

    Internal Clocks

  • Default better than ±2.0 ppm
  • OCXO better than ±0.1 ppm
  • Rubidium better than ±5.0e-11 (GNSS disciplined, warm- up: 600s)
  • Internal Rubidium clock

    Free―run (No GPS)

  • Freq. accuracy (7.5 minutes warm up): ± e-9
  • Freq. accuracy on shipment (24 h. warm up): ±5.0e-11
  • Aging (1 day, 24 hours warm up): ±0.5e-11
  • Aging (1 year): ±1e-9
  • GPS locked

  • Time accuracy (24 h. locked): ±50 ns
  • Hold - over (after 24 h. locked)

  • Freq. accuracy: 1.5e-11 / 24h
  • Time accuracy: ±100 ns / 2h, ±1.0μs / 24 h
  • Clock References

  • Built-in GNSS receiver
  • SyncE
  • IRIG-B
  • T1/E1
  • 10 MHz
  • 5 MHz
  • 2048 kHz
  • 1544 kHz
  • 1PPS
  • 1PP2S
  • ToD
  • SyncE and PTP testing

  • PTP profiles: Telecom and Power
  • Encapsulations: Ethernet and UDP
  • Clock emulation: Master / Slave, Unicast/Multicast, 128 packet/s
  • PDV capture, protocol analysis and correction field support
  • Ethernet PTP Frequency testing

  • Floor Delay Population (G.8260): FPC, FPR, FPP
  • Wander: Analysis and Generation TIE, MTIE and TDEV (in real time)
  • Ethernet PTP Phase testing

  • Measured at GbE and 1pps interfaces
  • Time Error (TE): Maximum (max |TE|), Dynamic (dTE), Constant (cTE)
  • 1 pps testing

  • Wander: TIE, MTIE, TDEV
  • Time Error (TE): Maximum (max |TE|)
  • Synchronous Ethernet

  • ESMC / SSM: Generation, decoding and transparent forwarding
  • Wander: Analysis/Generation: TIE, MTIE and TDEV (in real time)
  • IEC 61850 GOOSE

  • Decodes and analyzes GOOSE messages
  • GOOSE protocol scan with GoCBName, GoID, DatSet
  • GOOSE frame count for the active flow and all flows
  • Latency: current, avrg., min., max., range and std. dev. IEC 61850 SV
  • Decodes and analyzes SV messages
  • SV protocol scan with svID population
  • SV frame count for the active flow and all flows
  • Sample count and sampling rate measurement
  • Latency: current, avrg., min., max., range and std. dev.

    Latency & Delay measurements

    E1, T1, GbE

  • Round-trip delay (RTD)
  • One-way delay (OWD) GNSS assisted
  • Ethernet PTP

  • Floor delay packet population, ratio/percentage/count
  • Path delay asymmetry
  • End-to-end / peer-to-peer path delay mechanisms
  • Master-to-slave / Slave-to-grandmaster latency
  • PTP packet delay variation test
  • Time Error (TE): Maximum (max |TE|), Dynamic (dTE), Constant (cTE)
  • Service Disruption Time

  • Interfaces: E1, T1, IEEE C37.94, Datacom, Co/Contra-directional
  • Resolution: 100 us

  • Ethernet/IP Testing

    8 x independent streams

  • Streams: may use individual sour/dest. addresses and bandwidth profile
  • Internet Protocol: IPv4 / IPv6 support
  • Frames: DIX, VLAN, Q-in-Q, CoS (DSCP/PCP), MPLS, and Jumbo
  • IP with UDP or arbitrary protocol
  • DHCP for source IP and ARP for destination MAC
  • Counts et statistics

  • Frame counts, IP traffic statistics, and bit rate
  • Top ten VLAN, MAC, IPv4 and IPv6 addresses
  • QoS: Latency, Delay variation, Loss ratio, SES, Availability, OOS, Duplicated
  • BER Tests et Patterns

  • Traffic generation: Continuous, Burst, Ramp, Random
  • Layer 2/4 PRBS: 2e11-1, 2e15-1, 2e20-1, 2e23-1, 2e31-1
  • Layer 2/4 PRBS: all inverted versions
  • Symmetric/Asymmetric RFC-2544

  • Throughput
  • Latency
  • Loss
  • Back-to-back
  • System Recovery
  • Symmetric/Asymmetric eSAM (Y.1564)

  • Latency, Delay Variation, Loss, and Availability
  • Eight / four services (colour/not colour)
  • CIR, EIR, max, Througput
  • Loopback

  • L1 - L4 loopback mode
  • Traffic filtering by
  • sour/dest MAC/IP/Port
  • Protocol

  • PDH / T.Carrier testing


  • T1 (ANSI T1.102)
  • E1 (ITU-T G.703)
  • E0/Co-Directional (ITU-T G.703)
  • Modes

  • Terminal
  • Monitor
  • High Impedance
  • Pass-through
  • T1: Framed SF and ESF and unframed Generation/Analysis
  • E1: Framed PCM-30 / 31 with/without CRC and Unframed signals
  • T1/E1: Display and Edition: all fields, CAS, Pulse Masks, Events
  • Channel map: Busy/Free, External Drop/Insert of 64 kb/s co-dir or datacom
  • Measurements

  • BER
  • Line/Freq
  • Errors/Alarms
  • G.821, G.826, M.2100
  • VF: tone generation/analysis
  • Attenuation, Freq, Freq. deviation, Level, Peak codes
  • Synchronization

  • Jitter analysis: Peak to peak, RMS, hits, count (0.1 to 100 kHz range)
  • Wander: Analysis/Generation and masks (1 μHz to 10 Hz range)
  • Wander Analysis/Generation in 10 MHz, 2048 kHz, 1544 kHz, 1pps
  • C37.94 testing

    Operation Modes

  • Unframed or framed operation
  • Clock: Recovered or Internal
  • End point or terminal mode
  • Results with PASS/FAIL indications

    Analysis & Generation

  • Bit Rate generation in steps of nx64 kb/s up to 768 kb/s
  • BER test
  • ITU-T G.821 performance test
  • Event Detection / Insertion
  • Defects: LOS, AIS, LOF, RDI, LSS, All 0, All 1
  • Anomalies: FAS, TSE, Slip

    Delay & Freq. Tests

  • Round Trip Delay (ms)
  • One-way Delay synchronized with GPS
  • Frequency (Hz)
  • Frequency Deviation (ppm), max. Deviation

    Jitter and Wander analysis

  • Peak to peak, RMS, jitter, hits detection and count
  • MTIE and TDEV resolution: 100 ps
  • Pass / Fail based on standard masks

    C37.94 SFPs

  • Multi-mode: SFP 850 nm, 2048 kbit/s, 1500 meters
  • Single-mode; SFP 1310 nm, 2048 kbit/s, 10 km
  • Optical Power Meter
  • Cable features

    Cable tests

  • Wiremap
  • Skew
  • Cable Diagnostics
  • Distance to fault

    Power over Ethernet

  • PoE and PoE+
  • Volts / Current
  • Datacom testing


  • Terminal emulation
  • Bi-directional Monitoring
  • Datacom / E1 mux
  • Display and Edition

  • DTE/DCE control circuit
  • Timing circuits
  • Binary rates
  • Tests

  • BER, Frequency
  • Insertion/Analysis of events
  • G.821

  • Sustation engineers

    Ordering Information

    AT.ZEUS.HH Zeus hand-held tester. Battery operated, 1 Gb/s Ethernet / IEC 61805 tester with optional IEEE C37.94, E1/T1 and synchronization capabilities. Includes dual 10/100/1000 Mb/s electrical ports, dual SFP ports. GOOSE and SV delay, jitter and frequency analysis, Ethernet QoS statistics, RFC2544 performance test, L2-L4 BER test, continuous / burst / ramp / random traffic generation, traffic statistics, error analysis, connectivity test ('ping', 'traceroute'), analysis filters, event insertion, endpoint and pass-through operation modes, lossless wirespeed traffic capture in PCAP format, graphical display of events, report generation and export. External clock reference input: GNSS (GPS, GLONASS, Galileo BeiDou), IRIG-B, 2048 kbit/s, 2048 kHz, 1544 kbit/s, 1544 kHz, 5 MHz10 MHz, 1 PPS, 1PP2S and ToD. External clock reference output: IRIG-B, 2048 kbit/s, 2048 kHz, 1544 kbit/s, 1544 kHz, 5 MHz,10 MHz, 1 PPS, 1PP2S and ToD. Includes AC/DC adapter, transportation bag, one RJ-45 patch cable, one BNC-BNC patch cable, compact GNSS antenna with magnet (5m cable - SMA male) and 10 meters 50 Ohm coaxial cable with SMA male / female connectors. SFP+ and SFP transceivers not included.
    AT.ZEUS.ETHDUAL Dual port Ethernet generation and analysis: Adds autonomous and simultaneous traffic generation capabilities to both Ethernet ports.
    AT.ZEUS.MSTR Multistream test. Generation over eight independent traffic streams. Eight analysis filters for each test port.
    AT.ZEUS.1564 eSAM (ITU-T Y.1564) Test of up to 8 services simultaneously. Set up of CIR, EIR and policing rate. Per stream quality objectives. Measurement of Information Rate (IR), Frame Transfer Delay (FTD), Frame Delay Variation (FDV), Frame Loss Ratio (FLR) and Availability. [REQUIRES: AT.ZEUS.MSTR]
    AT.ZEUS.IPV6 IPV6 test. Decoding and analysis of IPV6 datagrams. IPV6 traffic statistics and events. IPV6 packet filtering. TOP IPV6 source and destination addresses (with Network search option).
    AT.ZEUS.MPLS MPLS test. Generation of single or double MPLS label according RFC 3032. Configuration of TTL, Traffic class, Label. Filter selection rules by Label and Traffic class fields. Analysis of MPLS. Top LSPs (with Network search option).
    AT.ZEUS.WIRE Cable test. Wiremap with open and short circuit detection. Measurement of distance to fault. Crossover / straight cable detection. Measurement of cable skew.
    AT.ZEUS.POE Power over Ethernet test. PoE / PoE+ end point and pass through as per IEEE 802.3af and IEEE 802.3at with voltage and current measurement.
    AT.ZEUS.NS Network Search. Automatic detection of up to 16 most frequent streams listed by IPv4, VLAN and MAC.
    AT.ZEUS.ASYM Asymmetric RFC 2544 and eSAM (ITU-T Y.1564). Enables separated measurement of upstream and downstream performance for RFC 2544 (measurement of throughput, latency, frame loss and back-to-back frames) and eSAM (measurement of the IR, FTD, FDV, FLR and Availability). Enables responder operation in asymmetric RFC 2544 and eSAM tests.
    Ethernet testing accessories
    AT.1000SX.SFP SFP Adapter 1.25 Gbps SFP, 850 nm, MMF, 500 m reach, w/ DDM, Duplex LC, 0 – 70ºC
    AT.1000LX.SFP SFP Adapter 1.25 Gbps SFP, 1310 nm, MMF, 20 km reach, w/ DDM, Duplex LC, 0 – 70ºC
    AT.1000ZX.SFP SFP Adapter 1.25 Gbps SFP, 1550 nm, MMF, 80 km reach, w/ DDM, Duplex LC, 0 – 70ºC
    AT.100FX.SFP SFP Adapter 100BASE-FX, 125 Mb/s SFP, 1310 nm, MMF, 2 km reach, w/ DDM, Duplex LC, 0 – 70ºC
    TDM and Datacom testing
    AT.ZEUS.E1 E1 test. ITU-T G.703 2048 kb/s testing including BNC and RJ48 connectors, E1 generation and analysis; ITU-T G.704 frame structure with or without CRC and with or without CAS; internal, recovered and external clock references; CAS ABCD bits generation and analysis; FAS / NFAS analysis; E1 frame occupation map; frequency and received power level measurements; G.821, G.826 and M.2100 performance analysis; round trip delay measurement; service disruption time test.
    AT.ZEUS.T1 T1 test. ANSI T1.102 1544 kb/s dual port testing including RJ-48 and Bantam connectors. T1 generation and analysis; ANSI T1.403 SF (D4) and ESF frame structures with robbed bit generation and analysis; FDL signaling channel; internal, recovered and external clock references; T1 frame occupation map; frequency and received power level measurements; G.821, G.826 and M.2100 performance analysis; round trip delay measurement; service disruption time test. Includes RJ-48 to Bantam adapters (AT-77)
    AT.ZEUS.DATA Datacom test module. DTE / DCE emulation and datacom monitor modes. V24 / V.28 (RS-232) asynchronous and synchronous interfaces, X.21 / V.11 (RS-422) asynchronous and synchronous, V.35, V.36 (RS-449), EIA-530 and EIA-530A. PHM20 included. Datacom cables not included.
    AT.ZEUS.C3794 IEEE C37.94 test module. Dual port IEEE C37.94 generation and analysis including IEEE C37.94 frame structure; internal, recovered and external clock references; frequency measurements; bit error ratio tests, G.821 performance analysis, anomaly and defect reports, round trip delay measurement, service disruption time test. PHM21 included. Optical fibers and SFPs not included.
    AT.ZEUS.E0 ITU-T G.703 co-directional, contra-directional and centralized interface test module. Generation and analysis in ITU-T variable bit rate co-directional, contra-directional and centralized interfaces including internal, recovered and external clock references; frequency measurements; bit error ratio tests; G.821 performance analysis; round trip delay measurement; service disruption time. PHM22 included. E0 cables not included.
    AT.ZEUS.VF Voice frequency test module. Generation and analysis of voice frequency tests, including frequency, level, noise, round trip delay and frequency sweep analysis. PHM23 included. VF cables not included.
    AT.ZEUS.PULSE Pulse Mask Analysis. Displays the pulse shape and checks compliance with ITU-T G.703 mask. Includes eye diagram operation mode and analysis of pulse time and level metrics. [REQUIRES AT.ZEUS.E1 or AT.ZEUS.T1]
    AT.ZEUS.VFD Enables latency tests in VF interfaces. AUX port adapter not included. [REQUIRES AT.ZEUS.VF]
    AT.ZEUS.OWD One-way delay test. Measures end-to-end, one-way delay in ITU-T G.703 2048 kb/s, ANSI T1.102 1544 kb/s, IEEE C37.94, Datacom and VF interfaces. This test requires two compatible test units to be installed in at the ends of the transmission path to be measured. [REQUIRES: AT.ZEUS.E1 or AT.ZEUS.T1 or AT.ZEUS.VFD]
    AT.ZEUS.TDMDUAL Additionl E1 / T1 port test module for generation and analysis. Adds simultaneous traffic generation and analysis capabilities for ITU-T G.703 2048 kb/s or ANSI T1 102 1544 kb/s port. Plug-in module PHM24 included. [REQUIRES AT.ZEUS.E1 or AT.ZEUS.T1]
    TDM and Datacom testing accessories
    AT.76 Mini Balun. RJ48 to BNC male, one way. Input adapter
    AT.77 RJ48 to bantam adapter 1 meter cable. RJ48 male to bantam male.
    AT.90 RJ48 to RJ48 E1 crossover cable.
    AT.HS Head-set 3.5 mm jack integrated headphone and microphone.
    AT.V24 V.24 / V.28 / RS-232 cables. V24 / V.28 / RS-232 DTE and DCE interface cables.
    AT.X21 X.21/V.11 cables. X.21/V.11 DTE and DCE interface cables.
    AT.V35 V.35 cables. V.35 DTE and DCE interface cables.
    AT.V36 V.36/RS-449 cables. V.36/RS-449 DTE and DCE interface cables.
    AT.530 EIA-530 / EIA-530A cables. EIA-530 / EIA-530A DTE and DCE interface cables.
    AT.C37.94SX.SFP IEEE C37.94 SFP adapter.2048 kb/s SFP, 850 nm, 2Km, MMF, Duplex LC, 0 – 70ºC.
    AT.C37.94Lx.SFP IEEE C37.94 SFP Adapter 2048 Kbps SFP, 1310 nm, 20Km, SMF, Duplex LC, 0 - 70ªC (Attenuator 10dB included)
    Synchronization testing
    AT.ZEUS.SE SyncE Clock Emulation. Synchronization testing according to ITU-T G.8261, G.8262, G.8264. Ethernet line frequency (MHz), offset (ppm), drift (ppm/s). Analysis / Generation of ESMC messages. SyncE clock reference inputs.
    AT.ZEUS.SEW SyncE Wander test. Synchronous Ethernet TIE / MTIE / TDEV measurement. Synchronous Ethernet wander generation. [REQUIRES: AT.ZEUS.SE]
    AT.ZEUS.PTP IEEE 1588v2 / PTP Clock Emulation. PTP master and slave emulation. PTP passive monitoring. PTP message classification and analysis. PDV analysis.
    AT.ZEUS.PTPW IEEE 1588v2 / PTP wander test. PTP time interval error (TIE), maximum TIE (MTIE) and time deviation TDEV measurement. Floor delay population test. Time error (TE), maximum Time Error and path asymmetry test. [REQUIRES: AT.ZEUS.PTP]
    AT.ZEUS.JW TDM Jitter / Wander. Peak-to-peak jitter, RMS jitter, max. jitter, jitter hits detection. Configuration of jitter filters. Frequency offset (ppm), frequency drift (ppm/s). Wander metrics (TIE, MTIE, TDEV). Sinusoidal jitter and wander generation. [REQUIRES: AT.ZEUS.E1 or AT.ZEUS.T1 or AT.ZEUS.C3794]
    AT.ZEUS.CLK 1544 kHz, 2048 kHz, 10 Mhz, 1 PPS and ToD clock monitoring. Clock TE / TIE / MTIE / TDEV analysis, frequency (Hz), frequency offset (ppm) and frequency drift (ppm/s) analysis, jitter / wander analysis.
    AT.ZEUS.OCXO OCXO time reference. High performance internal oscillator replacing the standard time reference installed in the application board.
    AT.ZEUS.RB Rubidium time reference. Atomic (Rubidium) internal oscillator replacing standard time reference installed in the application board.
    Synchronization testing accessories
    AT.23 10 meters 50 Ohm coaxial cable with SMA male / female connectors. Extends the range of the GNSS antenna by 10 meters.
    AT.26 BNC M to SMA M cable. 1.5 meters 50 Ohm coaxial cable. SMA male to BNC male
    AT.791 1.5 meters 50 Ohm coaxial cable. SMB male to BNC male
    General options and accessories
    AT.VNC.RC Graphical Remote Control. Based on VNC for Windows and Linux. Ethernet / IP remote control that duplicates the tester graphical user interface in a remote computer.
    AT.SNMP.RC SNMP Remote Control and automation. Based on SNMP protocol allows user to control the tester remotelly using SNMP queries.
    AT.WIFI.RC Wi.Fi USB Remote Control wireless interface to be used together with VNC. [REQUIRES: AT.VNC.RC]
    AT.27 Car cord power adapter, including 2.5mm DC connector
    Calibration services
    AT.ZEUS.CERT Certificate of calibration. Accuracy calibration certificate, executed only when is sold and before its shipment.
    AT.ZEUS.CHECK Periodic Unit Verification. Includes board test verification (Calibration, Internal Frequency), test port verification (Ports A / B / C: Ethernet, SFP, unbalanced E1, balanced E1, VF Port , DTE / DCE Ports), analog verification (level port A / B / C, line attenuation, jitter error, pulse mask), clock reference input and output port verification (REF IN, REF OUT, REF IN/OUT, GNSS).
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