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GPS over Fiber Timing Distribution System
OS Series
Remote unit(OS208R)
Local unit(OS208L)
Shenzhen GEMS Navigation Electronics Co., Ltd.
2/F, Building 6, Rundongsheng Industrial Zone, Longzhu
Community, Xixiang Street, Bao'an District, Shenzhen City, China
Tel: +86-755-29644311
Fax: +86-755-29644383
Email: sales@gemsnav.com
Document Number 121004 Rev 002 2021-12-17
Page 1 / 12
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Table of Contents
Summary of Contents for Gems OS Series
- Page 1 GPS over Fiber Timing Distribution System OS Series Remote unit(OS208R) Local unit(OS208L) Shenzhen GEMS Navigation Electronics Co., Ltd. 2/F, Building 6, Rundongsheng Industrial Zone, Longzhu Community, Xixiang Street, Bao'an District, Shenzhen City, China Tel: +86-755-29644311 Fax: +86-755-29644383 Email: sales@gemsnav.com Document Number 121004 Rev 002 2021-12-17...
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Page 2: Product Introduction
Product Introduction This system consists of Remote unitand near-end host. The Remote unitreceives input through two ends and possesses 1 to 8 optional optical fiber interfaces through which signals are transmitted to near-end hosts. The Local unitoutputs signals to GPS device through 1-8/16 ports. The satellite signals received by Local unitfrom the Remote unitthrough optical fiber are amplified and distributed to the output ports, which, at the same time, offer GPS signals to 8/16 ports. -
Page 3: System Connection
System connection GPS antenna 1 GPS antenna 2 Remote unit Fiber Local unit Tel: +86-755-29644311 Fax: +86-755-29644383 Email: sales@gemsnav.com Web: www.gemsnav.com Document Number 121004 Rev 002 2021-12-17 Page 3 / 12... -
Page 4: Basic Features
Basic Features: Dual antennas, auto and manual switching function (far-end host); Gain: 30dB fixed gain; Status monitoring and alarm of antennas and output ports; Standard configuration of far-end host: 1 optical transmitting port (maximum optional 8); ... -
Page 5: Performance Index
Sending Optical wavelength 1310 Receiving 1100~1620 Optical fiber transmission distance Optical Power Sending Optical Power Receiving Performance Index Function Description Remarks Compatibility of timing system Support two timing systems: Beidou/GPS and able to automatically switch to another timing system in case of fault of any system, and manual intervention is not required. - Page 6 Output port With host output port connection indication function, this connection indication equipment can respectively reflect the connection status of function host output port to BBU and slaves and the suspension status through indicators. LNA testing Two independent low noise amplifiers (LNA) are available inside the host.
- Page 7 Optical fiber +48V dual input interface interfaces Power switch Earthing LCD screen Net access and client Status 8-16-port output network interface Dual input antenna indicator interfaces Antenna switch key and status memory Remote unit +48V dual input Optical fiber interfaces interface Power switch...
- Page 8 Operating Instructions This system supports dual+48V power supply. After power on, the indicators of power supply A and power supply B light on. Two input ports of Remote unitare connected to GPS antennas. Upon successful connection, antenna 1 and antenna 2 indicators are on. The optical fiber interface is round FC-APC interface.
- Page 9 ⑧Network management alarm interface: Connect network management through RJ45 network interface to monitor the device; RJ45 interface is dry contact interface through which the device sends alarm for fault. Antenna selection and status display: Select antenna mode actively: Select “Auto” or other antenna mode. The indicators on the panel will indicate the operation mode.
- Page 10 4-way Dry Contact Alarm Function (Far-end Host) Definition of dry contact alarm function Power supply alarm: When the power supply is connected normally, Definition pin 1 and pin 2 are closed. In case of open circuit or short circuit of 1、8 any power supply, pin 1 and pin 2 are disconnected.
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Page 11: Product Dimensions
Product Dimensions Device dimensions: 482.6mm ×195mm × 44 mm (D*W*) （Remote unitand Local unitare of same dimensions） Tel: +86-755-29644311 Fax: +86-755-29644383 Email: sales@gemsnav.com Web: www.gemsnav.com Document Number 121004 Rev 002 2021-12-17 Page 11 / 12... -
Page 12: Ordering Informations
Ordering Informations OS208-L-X Blank: One optical ports; 2：2 Optical ports ; 4: 4 Optical ports; R:Remote unit; L: local unit RL: Reapter unit, 208: 2 antennas ports, 8 outputs RF ports; 212: 2 antennas ports, 12 outputs RF ports;; 216: 2 antennas ports, 16 outputs RF ports; Tel: +86-755-29644311 Fax: +86-755-29644383 Email: sales@gemsnav.com Web: www.gemsnav.com Document Number 121004 Rev 002 2021-12-17 Page 12 / 12...
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