Economic and Cheap NtpServer

Eco NtpServer

Economic solution for network time synchronization.

Each computer on Network can adjust own local time to GPS server. Device built in real time clock is synchronized through the GPS satellite system. GPS - Global positioning system is joined to Cesium Atomic Clock standard.

Time Server has built in GPS receiver. Active antenna is delivered with device also. GPS Time server built in 10-BaseT native Ethernet connectivity.

NTP time protocol is main base of server. Its independent platform such as WIN2000,XP,LINUX,UNIX BSD ... Implemented Web server in device, used for setup IP address, mask, Gateway and status of satellites. SNMP traps available for GPS signal loss, visible satellites counts.

NMEA Standard protocol on RS232 output.
1sec TTL output.

Eco Technical information

Ethernet

• 10-BaseT
• bitrate rate - 10Mbit
• connection - standard RJ-45 connector

Processor

IP2022, 120 MIPS processor UBICOM

Real Time Clock

• PHILIPS I2C
• Backup lithium CR2430, user replaceable.
• Adjusted every 10 seconds from GPS receiver.
• max Error: 20ppm

Power

DC 9..12V / max 300mA without antenna power consumption.

Dimensions

87 x 150 x 40 [mm]

Server Case

• plastic
• gray
• IP40

GPS NTP

GPS receiver

• Built in GPS receiver
• 12 satellites receiver
• Rockwell chipset with 1PPS pulse output
• 1sec UTC rising edge pulse accuracy: +/-300nsec
• Active antena distributed with 5m cable length.
• NMEA 0183 standard RS232 protocol output on back panel DSUB9 connector

GPS antenna

GPS Antenna Property	GPS Antenna Value
Manufacturer	Elco Star Ltd. Microwave Systems
Frequency Range	1575.45 +/-2MHz
Gain	30 dBi +/-2dB
Polarization	RHCP
Noise Figure	1.2dB typical
Out of Band rejection	26dB +/- 50MHz
Mounting	Magnet mount
Consumption	max 30mA / 5V DC powered from server through RF connector
Cable	RG174, 5meters
RF connector	OSX male
Operating temperature	-30 ... 80'C

Accuracy

• GPS 1sec UTC epochal accuracy: +/- 300 nsec
• NTP time stamp resolution: +/- 15 usec (with minimal 5 satellites signal reception)

Supported protocols

Protocol Type	Protocol Description
NTP ver 3	(Network Time protocol) for network time synchronization
ICMP, SNMP traps	for satellite monitoring, MIB file description in provided manuals.
HTTP	server IP address setup and GPS status