8183 NetClock^®/GPS Master Clock

NetClock^® /GPS Master Clock Model 8183

• Legally Traceable Time™, Worldwide Precision Timing from GPS Satellite
• Ideal for Synchronizing 9-1-1 Systems and Computer Networks
• Meets NENA PSAP Master Clock Standard
• Automatic Adjustment for Local Time, Daylight Saving Time and Year
• Accurate to within 500 Nanoseconds of UTC Anywhere on Earth
• Scaleable Expansion Capability
• 5-Year Warranty

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/GPS 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/GPS can be used anywhere on our planet.

A variety of time code outputs are available to meet the requirements of numerous systems – two RS-232 serial ports, two RS-485 data bus ports, IRIG B/E and TTL, plus frequency outputs of 10 MHz and 1 PPS. Alarm outputs and programmable timer outputs are also provided. The NetClock/GPS is ideally suited for delivering system-wide split-second timing information to public safety and emergency response systems of all types.

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

Technical Specifications

Received Frequency	1575.42 MHz (L1), Coarse Acquisition (C/A)
Acquisition Time	Cold start, typically less than 20 minutes. Warm start with ephemeris data and position, typically less than 2 minutes.
Accuracy	Typical 1PPS output ±500 nanoseconds of UTC RS-232/RS-485: Time code ±100 microseconds to ±1 millisecond of UTC, format dependent IRIG B/E ±20 microseconds to ±200 microseconds of UTC, format dependent 10 MHz ±1 x 10--8 from corrected internal oscillator
Output/Connectors	Outputs: Connectors: Two RS-232 Serial Comm. DB9 female Two RS-485 Once-per-Second Terminal Block IRIG B/E BNC 1PPS, Pulse Per Second BNC 10-MHz Frequency Output BNC Alarm outputs Terminal Block Programmable Timer Output Terminal Block
S-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 between1200 and 9600, 8N1. IRIG output is configurable to format B at 1000 Hz, E at 100 Hz or 1000 Hz AM or TTL, with or without signature control. AM output adjustable 0 to 10 V into 600 ohms. IRIG time codes can follower DST rules. Alarm output, contact closure, for “Loss of GPS Lock”, and “Loss of Time Sync”. Programmable Timer Output: Programmable relay closure with up to eight ON/OFF events.
Inputs/Conductors	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 typ
Power	115 VAC to 12 VDC @ .75 amps, UL/CSA-approved power adapter (supplied). Connector: 2.1 mm male. International Power Suppy: PS00142 Input: 90 VAC to 240 VAC, 47 Hz to 63 Hz Output: 12 VDC. UL 1950, CSA 22.2; No. 950, No. 234 level 3, IEC 950, TUV/CS, (EN60950) safety requirements.

Physical & Environmental Specifications

Size/Weight	EIA 19"W x 1.75”H x 10.0”D rack /6 lbs
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

Antenna and Accessories

GPS antenna Model 8225	Size: 3.5" D x 3.25" H with 1"-14 threaded mounting adapter and 22" of PVC mast with mounting clamps. Assembled Height: 24” (609.6 mm) Cable Connector: N type female LMR-400 Cable Length: 200’ (60.96 m) maximum; with Model 8227, 400’ (121.92 m) maximum., 250’ (76.2 m) minimum. Temperature: -30°C to +80°C operating range
PS00142	International Power Supply
TimeTap 230, Model 8179T	for time distribution. Includes 12 VDC power adapter. Order one for each RS-232 device
Display Clocks	TimeView 230, Model 9175; or TimeViewä 400, Model 9177
Antenna Accessories:	Antenna Preamplifier, Model 8227 Antenna Surge Protector, GPS, Model 8226 Antenna Flat Roof Mount, Model 8213 Antenna Cable, LMR-400 equivalent (CAL7xxx, 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 Win95/98/ME/NT/XP/2000/2003
Ethernet Time Server, Model 9188	accurate time for intranet and enterprise networks
TimeBurst, Model 8185	broadcasts time to every agency in your community

Ordering Information

1	NetClock/GPS Synchronized Master Clock, Model 8183.