XTS7500 Series

Key Features:

  XTS7500 Series

Multi-GNSS Modular Time Server (Substation)
Power-Grade GNSS Modular PTP/NTP Server clock – Substation Certified

• High precision GNSS module
• Stratum 1 NTP Server, with Optional PTP hardware-support
• PTP Version supports IEEE61850-9-3 and IEEEC37.238 Power Profiles
• Holdover <30 ns/second time-drift when disconnected from GNSS
• IEC62439-3 Clause 5 Parallel Redundancy Protocol (PRP)
• Industrial fanless design for -40~85°C operation; IEC61850-3 protection
• Flexible modular configuration; 2 dedicated Output Module slots
• 2 x 10/100/1000 Mbps RJ45 and 2 x 100/1000 Mbps Combo SFP slots
• Embedded NTP/SNTP client and NTP server
• Support for Legacy Protocols: IRIG-B, BJT, BCD, ST, ST with checksum
• Redundant power input; low-Voltage DC or high-Voltage AC/DC

Product Details

Grandmaster core


Technical Specifications


Model Name XTS7500-C-N (NTP only) or XTS7500-C-P (NTP Server + PTP GM)

Network Interface


Standards IEEE 802.3 10BaseT
IEEE 802.3u 100BaseT(X)
IEEE 802.3ab for 1000BaseT(X)
IEEE 802.3u for 100Base-FX
IEEE 802.3z for 1000Base-X
ITU-T G.8261 Synchronous Ethernet (XTS7500-CPU-PTP only)
Ports 2x 10/100/1000BASE-T(X) RJ45 combo ports
2x 100/1000 Base-X SFP Slots combo ports
LAN Mode Dual Subnet or PRP (Parallel Redundancy Protocol)

GNSS/Clock Specifications


GNSS Input ports 1x GNSS Input; 1 x BNC (F)
GNSS Module specific Information
GNSS SupportedGNSS Module latencyLeap SecondChannels GPS; GLONASS, BEIDOU, Galileo<15ns GNSS/PPS output latencySupportedL1
1PPS Output 1x PPS Output, Square Wave, 1000ms pulse width, coaxial BNC (F) connector
10MHz Reference Output 1x 10MHz Reference Output, Sine Wave, coaxial BNC (F) connector
Oscillator Entry-level OCXO



Network Synchronization RFC 868 (Time Protocol)
RFC 867 (Daytime Protocol)
RFC 1119 (NTPv2) Server/ Client
RFC 1305 (NTPv3) Server/ Client
RFC 5905 (NTPv4) Server/ Client
RFC 1769 (SNTPv3) Server/ Client
RFC 2030 (SNTPv4) Server/ Client
Redundancy IEC62439-3 clause 5 Parallel Redundancy Protocol (PRP)
Configuration and monitoring RFC 2616 (HTTP/ HTTPS)
RFC 1157 (SNMPv1)
RFC 1901-1908 (SNMPv2c)
RFC 3411-3418 (SNMPv3)
Supported MIBs MIB II, IF-MIB, SNMPv2 MIB, BRIDGE-MIB, RMON MIB Group 1,2,3,9, RFC RFC 1157, RFC 1213, RFC 1215, RFC 1493, RFC 1643, RFC 1757, RFC 2011, RFC 2012, RFC 2013, RFC 2233, RFC 2571, RFC 2742, RFC 2819, RFC 2863, RFC 3411, RFC 3412, RFC 3413, RFC 3414, RFC 3415, RFC 2674
Precision Time Protocol XTS7500-CPU-PTP only
Operation Mode Grandmaster Clock (XTS7500-C-P only)
Supported PTP modes L2 : Multicast
L2 VLAN Tagging: Supported
L3 IPv4: Multicast, Unicast, Unicast Negotiation
One or two-step clock modes supported
End-to-End or Peer-to-Peer supported
Holdover Performance < 30 ns/second drift when not locked to GNSS,
after 24 hours operation
total ~1 us/24 hrs drift after locked to GNSS
after 24 hours (0.052 us/hr)
PPS Stability 70 ns when locked to GNSS
PTP Precision +/- 50 ns error, as per test with third party slave
Supported PTP Profiles PTP default profile, VLAN support
C37.238 -2017 Power Profile
IEC/ IEEE61850-9-3 Power Profile(2016)
User can modify the detailed PTP settings
Maximum number of Slaves XTS7500-C-P can support maximum
2,000 PTPpps (PTP packets per seconds).

Physical Characteristics


Dimension (W x H x D)

Power inputs
Output modules
SPCC IP30 Metal Housing
440 x 44 x 340 mm (not including screws and rack-mount kit)
5.6 Kg (not including module but module cover only)
1U Rack-mount, Rack-mount kit included
Dedicated 2 Power module slots (for redundancy)
Dedicated 2 Output module slots (IRIG-B and Serial freely exchangeable)

Environmental Limits


Operating Temperature
Storage Temperature
Ambient Relative Humidity
-40°C~85°C (-40°F~185°F) / LCM display maximum 0~70 °C
-40°C~85°C (-40°F~185°F) / LCM display maximum -30~80 °C
5%~95% (Non-condensing)

Power Modules


Technical Specifications

Model name XTS7X00-AC Power Module XTS7X00-DC Power Module



Input Voltage 110-240 AC / 120~240 VDC 24-60 VDC
Input Current (Max) 110-240 VAC, 0.2 A Max
120-240 VDC, 0.2 A Max
24-60 VDC , 0.8 A Max
Input Power (Max) Approx. 20W Max Approx. 20W Max
Relay outputs 1 Relay (normal open) 1 Relay (normal open)

Physical Characteristics


Dimension (W x H x D) 84.5 x 39.5 x 204.8 mm 84.5 x 39.5 x 190.5 mm
Weight 500 g 200 g
Installation Cold plug-in (screws provided) Cold plug-in (screws provided)

Power Modules


Technical Specifications


Model name XTS7X00-ST



Connector 2 x 12-pin terminal block
Ports 8 x RS-485
Protocols supported IRIG-B, BCD BJT,
ST, ST with Checksum
Configuration Software-selectable by port,
through web interface

Physical Characteristics


Dimension (W x H x D)
119.5 x 39.5 x 190.5 mm
350 g
Cold plug-in (screws provided)

Regulatory Approvals


Safety CB(IEC)/EN 60950-1 & CB(IEC)/EN 62368-1
EMC FCC Part 15, Subpart B, Class A, EN 55032:2012, EN61000-6-4, EN 61000-3-2, EN 61000-3-3, EN 55024, EN 55035, EN61000-6-2
Power Automation IEC61850-3 (pending), IEEE 1613 (pending)
Test Item Value Level
IEC 61000-4-2_2008 ESD Contact Discharge
Air Discharge
IEC 61000-4-3_2010 RS Enclosure Port 10(V/m) , 80-1000MHz
3(V/m), 1.4~6GHz
IEC 61000-4-4_2012 EFT AC Power Port
DC Power Port
Signal Port
±2.0KV @ 5.0KHz
±1.0KV@ 5.0KHz
±1.0KV @ 5.0KHz
IEC 61000-4-5_2017 Surge AC Power Port
(Waveform: 8/20μs)
DC Power Port
(Waveform: 8/20μs)
Signal Port
Line-to Line±1KV
Line-to Earth±2KV
Line-to Line±0.5KV
Line-to Earth±1KV
Line-to Earth±1.0KV
Line-to Earth±4.0KV
IEC 61000-4-6_2013 CS AC Power Port
DC Power Port
Signal Port
10V, 150KHz~80MHz, 80%AM
10V, 150KHz~80MHz, 80%AM
10V, 150KHz~80MHz, 80%AM
IEC 61000-4-8_2009 PFMF (Enclosure) 30A/m (r.m.s), 50Hz or 60Hz 4
IEC 61000-4-11_2017 DIP AC Power Port 30% Reduction (Voltage Dips), 25/30 Cycle
60% Reduction (Voltage Dips) : 10/12 Cycle
100% Reduction (Voltage Dips) : 1 Cycle
100% Reduction (Voltage Interruption) : 250/300 Cycle
IEC 61000-4-16 Main Frequency DC input or output
Signal Port
Telecommunication Port
30 V continuous / 300V 1 4
IEC 61000-4-17 Ripple DC input or output 15% of unit (10% Level 3) 4
IEC 61000-4-18 Damped Oscillatory AC Power Port
DC Power Port
2.5KV common,
1KV differential mode @ 1MHz
Signal Port
Telecommunication Port
2.5KV common,
2.5KV differential mode @ 1MHz
Shock Drop Vibration MIL-STD-810G Method 516.5MIL-STD-810F Method 516.5MIL-STD-810F Method 514.5 C-1 & C-2
RoHS2 Yes
MTBF 9.20 Years
Warranty 5 years