A Powerful base for NTP and PTP The NTS7500 1U 19’’ Rack-mount Modular NTP Server with additional Grandmaster Clock feature is a high-powered rugged device that offers good precision and reliability. Suitable for almost any environment and complying with the harshest Industrial EMC conditions, ATOP’s device satisfies all  industry requirements for Industrial-grade networking timing applications. Its modular architecture provides power-input redundancy and up to 16 different outputs for legacy time Protocols – such as IRIG-B, BCD, ST, ST with checksum.  


Stratum 1 NTP Server: NTS7500 embeds a high precision, multi-system GNSS module that supports GPS, GLONASS, BEIDOU and GALILEO GNSS Systems for redundancy. When disconnected from a GNSS time source, its integrated TCXO Oscillator, ensures time drift (1PPS output) does not exceed 30 ppb matching and exceeding the requirements for Power Substations. NTS7500 supports NTPv1/v2/v3/v4 Server and NTP/SNTP Client.  


Optional PTP Standard Support: On NTS7500-CPU-NTP, the possible PTP configurations are endless. NTS7500 supports Layer-2 and Layer-3 over IPv4 transport; VLAN Tagging; and Multicast, Unicast and Unicast Negotiation in both End-to-End and Peer-to-Peer delay calculation modes. NTS7500 fully supports IEEE C37.238-2017 and IEEE/IEC 61850-9-3 – 2016 Power Profiles.    


Industrial and Substation Hardware : Designed to satisfy EMC requirements for Substation-Grade equipment, NTS7500 is designed to function between -40°C and 85°C with passive cooling only, allowing it to avoid the risk of having moving parts breakdown from constant operations. Also, its powerful CPU supports up to 2,000 packets per second, allowing endless applications and a large number of slaves to be supported simultaneously. Redundancy through IEC62439-3 Clause 5 PRP.    


Proven design: No standardized testing procedure for PTP devices exists. So ATOP tests its products yearly in ISPCS Plugfests to demonstrate their reliability. NTS7500 was successfully tested in Stockholm 2016, Monterey 2017, Geneva 2018 and Portland 2019. More information available on www.ispcs.org.
 

Application example

This network diagram shows the use of ATOP’s NTS7500 in a substation environment. The GMC is usually located in the office building adjacent to the substation. On one side, it is connected to the GNSS Antenna, with the other side being the Substation backbone connection. Every switch connected to the Grandmaster should be able to handle all Precision time Protocols by hardware, in order not to affect the synchronization quality. Packets are delivered downstream through Boundary or Transparent clocks, where they’ll reach PTP slaves – such as substation IEDs.

Ethernet
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 (NTS7500-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 Supported GNSS Module latency Leap Second Channels	GPS; GLONASS, BEIDOU, Galileo <15ns GNSS/PPS output latency Supported L1
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

Software
Protocols	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

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

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

Power Modules
Model name	NTS7X00-AC Power Module	NTS7X00-DC Power Module
Power
Input Voltage	110-240 AC / 120~240 VDC	20-60 VDC
Input Current (Max)	110-240 VAC, 0.35 A Max 120-240 VDC, 0.15 A Max	20-60 VDC , 0.8 A Max
Input Power (Max)	Approx. 20W Max	Approx. 20W Max
Relay output	1 Relay (normal open)	1 Relay (normal open)
Physical Characteristics
Dimension (W x H x D) Weight Installation	84.5 x 39.5 x 204.8 mm 500 g Cold plug-in (screws provided)	84.5 x 39.5 x 190.5 mm 200 g Cold plug-in (screws provided)

IRIG-B and Serial Output Expansion Modules
Model name	NTS7X00-S1
Interface
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) Weight Installation	119.5 x 39.5 x 190.5 mm 350 g Cold plug-in (screws provided)

Certification	Standard
Safety	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

Standard	Item	Test	Value	Level
IEC 61000-4-2_2008	ESD	Contact Discharge Air Discharge	±4KV ±8KV	2 3
IEC 61000-4-3_2010	RS	Enclosure Port	10(V/m) , 80-1000MHz 3(V/m), 1.4~6GHz	3
IEC 61000-4-4_2012	EFT	AC Power Port DC Power Port Signal Port	±2.0KV @ 5.0KHz ±2.0KV@ 5.0KHz ±1.0KV @ 5.0KHz	3 3 3
IEC 61000-4-5_2017	Surge	AC Power Port AC Power Port DC Power Port DC Power Port Signal Port	Line-to Line±1KV Line-to Earth±2KV Line-to Line±0.5KV Line-to Earth±0.5KV Line-to Earth±1.0KV	3 3 2 2 3
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	3 3 3
IEC 61000-4-8_2009	PFMF	Enclosure	100A/m continuous, 1000A/m (3s)	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	3 3 3 3
IEC 61000-4-16	Main Frequency	DC input or output Signal Port Telecommunication Port	30 V continuous / 300V 1	4 4 4
IEC 61000-4-17	Ripple	DC input or output	15% of unit (10% Level 3)	4

Certification
Shock	MIL-STD-810G Method 516.5
Drop	MIL-STD-810F Method 516.5
Vibration	MIL-STD-810F Method 514.5 C-1 & C-2
RoHS2	Yes
Warranty	5 Years
MTBF	9.20 Years

MODEL NAME	PART NUMBER	Description
NTS7500-CPU-NTP	1P1NTS75000002G	NTP Server core-unit
NTS7X00 SERIAL MODULE	1P1NTS7X000001G	IRIG-B and Serial Output module for NTS7500 - 16-pin Terminal Block
NTS7X00-AC POWER MODULE	1P1NTS7X000002G	T;110~240 VAC;120-240 VDC,0.2A;G
NTS7X00-DC POWER MODULE	1P1NTS7X000003G	T;24-60 VDC;0.8A Max;G

Model name	Part Number	Description
SDR-75-24	50500752240001G	DIN RAIL POWER SUPPLY / T;AC 88~264V to 24VDC 3.2A;75W
AXFD-1314-0523	522AXFD1314001G	SFP Transceiver;155Mbps, Multi-mode;1310nm;2km;-40~85, DDMI
AXFD-1314-0553	522AXFD1314011G	SSFP Transceiver;155Mbps, Single-mode;1310nm;30km;-40~85, DDMI
AXGD-5854-0513	522AXGD5854001G	SFP Transceiver, 1250Mbps, 850nm, Multi-mode, 550m, 3.3V, -40~85°C, DDMI
AXGD-1354-0523	522AXGD1354001G	SFP Transceiver, 1250Mbps, 1310nm, Multi-mode, 2km, 3.3V, -40~85°C, DDMI
AXGD-1354-0533	522AXGD1354011G	SFP Transceiver, 1250Mbps, 1310nm, Single-mode, 10km, 3.3V, -40~85°C, DDMI
AXGD-3354-0593	522AXGD3354001G	SFP Transceiver, 1250Mbps, 1310nm, Single-mode, 40km, 3.3V, -40~85°C, DDMI
High-Accuracy GNSS Active Antenna	59901591G	Outdoor Antenna - GL-111
RHG9528-BS	See datasheet	IEC61850-3 Rack-mount Modular Managed Switch & 1588v2 BC/TC
EHG9508/12	See datasheet	IEC61850-3 DIN-Rail Managed Switch & 1588v2 TC

Datasheet

VERSION	NAME	TIME	SIZE	DOWNLOAD
v1.7	Datasheet EN	2023-11-01	614.26 KB
v1.6	Datasheet EN	2021-09-13	831.61 KB
v1.4	Datasheet EN	2021-03-10	1.02 MB
v1.3	Datasheet EN	2020-12-22	1.02 MB
v1.2	Datasheet EN	2020-08-25	1.02 MB
v1.1	Datasheet EN	2020-08-18	1.02 MB
v1.0	Datasheet EN	2020-07-24	1.02 MB
v0.9	Datasheet EN	2020-06-17	1.02 MB
v0.8	Datasheet EN	2020-04-20	1.02 MB
v0.7	Datasheet EN	2020-03-12	1.02 MB
v0.6	Datasheet EN	2020-02-04	1.02 MB
v0.5	Datasheet EN	2019-12-16	908.43 KB
v0.4	Datasheet EN	2019-12-12	905.66 KB
v0.3	Datasheet EN	2019-10-31	617.09 KB
v0.2	Datasheet EN	2019-08-27	692.75 KB
14 older versions

Hardware Installation Guide

VERSION	NAME	TIME	SIZE	DOWNLOAD
v1.0	NTS7500 Series Hardware Installation Guide	2019-11-05	3.89 MB

Manual

VERSION	NAME	TIME	SIZE	DOWNLOAD
v0.7	NTS7X00 User Manual	2021-06-07	899.72 KB
v0.6	NTS7X00 User Manual	2021-03-29	896.71 KB
v0.5	NTS7X00 User Manual	2020-07-24	1.37 MB
v0.4	NTS7X00 User Manual	2019-08-27	1.46 MB
3 older versions

Firmware

VERSION	NAME	TIME	SIZE	DOWNLOAD
v6.11	NTS7500-NTP_v6.11	2020-10-07	11.16 MB

Utility

VERSION	NAME	TIME	SIZE	DOWNLOAD
v5.60	Management Utility for Windows	2021-01-18	23.65 MB
v5.20	Management Utility for Windows	2016-10-28	16.21 MB
1 older version

Test reports

VERSION	NAME	TIME	SIZE	DOWNLOAD
	NTS7500 Declarations of Conformity	2023-03-15	306.89 KB
v1.0	NTS7500 Certification CE_FCC	2020-09-30	9.10 MB
v1.0	NTS7500 Certification Safety (CB)	2020-09-30	1.19 MB