8183A NetClock^®/GTP

NetClock^® / GTP Master Clock - Model 8183A

Product Overview

The Global Positioning System (GPS) is a network of 24 satellites orbiting the earth, and represents a $13 billion investment from the U. S. Government. Each satellite carries on-board triple-redundant atomic clocks which are maintained accurate and traceable to UTC (Universal Coordinated time) by the U.S. Department of Defense and the U. S. Naval Observatory.

The Spectracom NetClock/GTP (Global Time Provider) Master Clock automatically tracks up to eight satellites simultaneously, and provides extremely accurate timing by synchronizing to the satellites’ atomic clocks. Because the GPS satellite system blankets the earth, the NetClock/GTP can be used anywhere on our planet.

A variety of time code outputs are available to meet the requirements of numerous systems. NetClock/GTP is ideally suited for delivering system-wide split-second timing information to computer and IRIG B synchronized systems.

An international power supply is available for applications outside North America.

Technical Specifications

Received Frequency	1575.42 MHz (L1), Coarse Acquisition (C/A)
Satellites Tracked	Eight, Simultaneous
Acquisition Time	Cold start, typically less than 20 minutes.
Accuracy	Typical 1PPS output ±500 nanoseconds of UTC with SA <500 nanoseconds of UTC without SA RS-232/RS-485: Time code ±100 microseconds to ±1 millisecond of UTC, format dependent FAA IRIG: B ±2 microseconds when locked to GPS 10 MHz ±1 x 10 -8 from corrected internal oscillator
Position Accuracy	±100 meters with SA, ±25 meters without SA OUTPUTS: CONNECTORS: RS-232 Serial Comm. DB9 female RS-485 Once-per-Second Terminal Block FAA IRIG B, 4 outputs in one DB25 Male 1PPS, Pulse Per Second BNC 10-MHz Frequency Output BNC
RS-232 and RS-485 ports operate independently and can be programmed during setup to output different time code data formats and at different baud rates. Contact Sales Department for full description of all time code formats. Each port can follow UTC or any Time Zone. Baud rates are between 1200 and 9600, 8N1. FAA IRIG B output is pulse-width-coded FAA modified IRIG B in RS-422/485 levels. Four buffered outputs provided.
Inputs / Connectors	RS-232 Setup Interface: DB9 female Setup interface port is used to change factory default settings for all output and alarm ports. The port is also used to set Programmable Timer, Front Panel Display, recall report logs and upgrade software in FLASH memory. The port works at 9600 baud, 8N1, and can be accessed with a PC terminal emulator. Antenna: Coaxial BNC type
Power	12 to 36 VDC, power input connector banana jack with binding post on rear panel, fused, 6 Watts, front panel on/off switch. (Power adapter not included.)
Front Panel	Selectable 12 or 24 hour display (0.8”, 0.56"), displays Day of Year, Hours, Minutes, Seconds. Red/Green Status Indicators: “GPS Lock”, “Time Sync”
Warranty	5-Year Warranty

Environmental & Physical Specifications

Size / Weight	EIA 19" rack mount 1.75”H x 19.0”W x 10.0”D/4.25 lbs (44 mm H x 483 mm W x 254 mm D m/2.0kg)
Temperature	32°F to 122°F, (0°C to 50°C) operating range -40°F to 185°F (-40°C to +85°C) storage range
Humidity	95% R.H. non-condensing

Antenna & Accessories

GPS Antenna Model 8225	Size: 3.5”D x 3.25”H (88.9 x 82.55 mm) with 1”-14 threaded mounting adapter and 22” (558.8 mm) of PVC mast with mounting clamps. Assembled Height: 24” (609.6 mm) Cable Connector: N type female RG-213 Cable Length: 200’ (60.96 m) max.; with Model 8227, 400’ (121.92 m) max., 250’ (76.2 m) min. Temperature: -22°F to 176°F (-30°°C to +80°C)
Antenna Preamplifier Model 8227 - Indoor	Size: 1.25”D x 6.25”L (31.75mm x 158.75mm) Cable Connector: N type female Cable Allowed: 200’ to 400’ (60.96m to 121.92m) requires in-line preamplifier Model 8227 Temperature: -22°F to +185°F (-30°C to +85°C) operating range
TimeTap, Model 8179T	for time distribution. Includes 12 VDC power adapter. Order one for each RS-232 device.
Display Clocks	TimeView® digital and analog clocks.
Antenna Accessories	Antenna Preamplifier, Model 8227 Antenna Surge Protector, GPS, Model 8226 Antenna Flat Roof Mount, Model 8213 Antenna Cable, RG-213, CA07xxx, xxx=length in feet.
Software	NetClock Time Manager - NTM5 to synchronize WIN 95/98/NT computer and Novell Servers. TimeSet-TS1 to synchronize TimeView Display Clocks from Win 95/98/NT or DOS Computers. PresenTense - complete windows Network Synchronization software for Win 95/98/ME/NT/XP/2000/2003.
Ethernet Time Server Model 9188	Accurate time for intranet and enterprise networks.

Ordering Information

1	NetClock/GTP Synchronized Master Clock, Model 8183A