8 Channel parallel tracking GPS receiver
	1U high 19” rack mount design
	Suited to timing applications and static use/td>
	NTP timing systems (RFC1305)
	Master clock for Local Area Networks (LANs)
	RS232 data interface
	12V DC powered
	Internal battery backup
	Roof-top active antenna
	Compatible with Thorcom MDS700 and SMG based mobile data systems

Overview

The Thorcom GPS100 is a 1U high 19” rack mounted GPS receiver aimed at applications requiring a static installation, for example provision of a Network Time Protocol (NTP) reference clock on a network or computer system.

The GPS receiver connects to a computer/server via a standard RS232 interface and provides the Trimble Standard Interface Protocol (TSIP) packet data using Transmit/Receive Data pins and a One Pulse Per Second (PPS) signal on the Data Carrier Detect pin.

The GPS100 has an SMB RF connector for connection to an external active (26dB pre-amplifier) type GPS L1 band antenna. The unit operates from a plug-in style 12V DC wall adaptor and consumes under 3 watts.

When used with the NTP software (described below) and appropriate reference clock driver the host/target system can achieve timing accuracies of a few tens of milliseconds of absolute UTC/GMT.



External antenna

An external active “bullet” antenna operating in the GPS L1 band (1575.42MHz) is provided with 22m of external grade 75 ohm coax with F-type connectors and a 150mm (6 inch) F-type to SMB adapter cable for connection to the GPS100 unit.






NTP Software - supported platforms

Thorcom ships the GPS100 with the Network Time Protocol daemon (ntpd) software configured and installed on its MDS700 (PMR mobile data) and SMG (digital radio) network servers operating under Linux.

NTP software can be configured and installed under other Unix/Linux based operating systems.