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 __________________________________________________________________________ 2    Connectors 

 

PolaRx3e Product Family Hardware Manual v1.1.0 

 

 
Use  this  input  to  synchronize  the  internal  receiver  time  to  an  external  time  source.    For  proper 
operation, the PPS IN input should be used in combination with the REF IN input.  REF IN provides 
the receiver with a precise external frequency reference, and PPS IN provides a precise time reference. 
It is important that the PPS input signal and the 10 MHz reference be generated from the same external 
clock.  It is also necessary that these two external signals be present from the start-up of the receiver.  
Plugging  in  a  PPS  input  signal  when  the  receiver  is  already  operating  will  lead  to  erroneous 
measurements. 
 
If the  PPS input option is permitted, the receiver will synchronize its measurement latching with the 
first low-to-high transition it detects on the PPS IN connector.  There is no command to enter.  Once 
this initial  time  synchronization is  done,  the signal  on  the  PPS  IN  connector  is ignored: the receiver 
simply integrates its frequency reference to keep track of the time.   If the PPS input signal originates 
from  the  same  clock  as  the  10MHz  reference  signal,  the  receiver  time  will  stay  in  sync  with  the 
external clock time. 
 
The  delay  between  a  low-to-high  transition  on  the  PPS  input  connector  and  the  latching  of  the 
measurements  in  the  receiver  depends  on  the  phase  relationship  between  the  10  MHz  frequency 
reference and the PPS input signal and can take a value from 178.4 to 211.7 ns (+/-2 ns). This delay is 
insensitive to powering off and on the receiver. 
 
In order to measure the delay between the PPS input pulse and the measurement latching, it is possible 
to  synchronize  the  PPS  OUT  signal  with  the  measurement  latching  epoch.    This  is  done  by  the 
following command: 
 

setPPSParameters,sec1,low2high,0,RxClock 

 
After  this  command,  the  low-to-high  transition  at  the  PPS  OUT  connector  is  synchronized  with  the 
internal measurement latching. 
 
 

2.1.5

 

REF OUT (BNC) 

 
This connector provides a 10 MHz output signal synchronized with the frequency reference used by 
the  receiver  (be  it  internal  or  external).    It  is  a  sinusoidal  signal  with  an  unloaded  peak-to-peak 
amplitude of 0.7V (-5dBm in a 50

 load). 

 

 

 

Summary of Contents for PolaRx3e

Page 1: ..._____________________________________________________________________________________________________ PolaRx3e Product Family Hardware Manual v1 1 0 1 PolaRx3e Product Family Hardware Manual Version 1 1 0 ...

Page 2: ...dware Manual v1 1 0 2 PolaRx3e Product Family Hardware Manual Version 1 1 0 September 22 2009 Copyright 2000 2009 Septentrio nv sa All rights reserved Septentrio Satellite Navigation Ubicenter Philipssite 5 B 3001 Leuven Belgium http www septentrio com support_request htm support septentrio com Phone 32 16 300 800 Fax 32 16 221 640 ...

Page 3: ... 1 MAIN TNC 7 2 1 2 PPS OUT BNC 7 2 1 3 REF IN BNC 7 2 1 4 PPS IN BNC 7 2 1 5 REF OUT BNC 8 2 2 Front Panel 9 2 2 1 COM1 COM2 9 2 2 2 USB 11 2 2 3 Ethernet 11 2 2 4 IN 12 2 2 5 Power Connector 13 2 2 6 Status LEDs 13 3 INTERNAL LOGGING 14 4 ETHERNET 15 4 1 Modifying the IP Configuration 15 4 1 1 Using the Web Interface 15 4 1 2 Using the Serial Interface 17 5 HARDWARE SPECIFICATIONS 18 5 1 Size 18...

Page 4: ...ean Union EU Directive 2002 95 EC on the restriction of the use of certain hazardous substances in electrical and electronic equipment RoHS Directive Receivers of the PolaRx3e family comply with the European Union EU Directive 2002 96 EC on waste electrical and electronic equipment WEEE The purpose of this Directive is the prevention of waste electrical and electronic equipment WEEE and in additio...

Page 5: ...Septentrio if any should not be replaced by another If you are using the receiver with your own power supply it must have a double isolated construction and must match the specifications of the provided power supply Statement 0003 WARNING Ultimate disposal of this product should be handled according to all national laws and regulations Statement 0005 WARNING The equipment and all the accessories i...

Page 6: ...Rx3eTR PolaRx3eG incorporates a high performance dual frequency L1 L2 or L1 L5 GNSS engine in a rugged housing PolaRx3e receivers feature the following interfaces 2 serial COM ports USB Ethernet see Chapter 3 of this document 10 MHz reference input and output Pulse per second output and input input only available on PolaRx3eTR PolaRx3e receivers are compatible with Septentrio s SSRC1 Software Pack...

Page 7: ... 1 3 REF IN BNC Use this connector to provide the receiver with an external 10 MHz frequency reference to be used instead of the internal oscillator The reference signal must be sinusoidal with a peak to peak amplitude unloaded ranging from 0 5V to 2V 8dBm to 4dBm in a 50 load Connecting or disconnecting the external 10 MHz reference must be done with the receiver switched off The receiver checks ...

Page 8: ... connector is ignored the receiver simply integrates its frequency reference to keep track of the time If the PPS input signal originates from the same clock as the 10MHz reference signal the receiver time will stay in sync with the external clock time The delay between a low to high transition on the PPS input connector and the latching of the measurements in the receiver depends on the phase rel...

Page 9: ... S40F1C T04MFD0 50CP S40F1C P05MFD0 50CP S40F1C T07MCD0 50CP 2 2 1 COM1 COM2 The COM1 and COM2 ODU 7 pin connectors provide the following signals input and output are related to the receiver Pin Description 1 COM1 not connected COM2 5V DC output 2 Signal ground GND 3 COM1 not connected COM2 Clear To Send CTS input 4 COM1 not connected COM2 Request To Send RTS output 5 Receive Data RXD input 6 Tran...

Page 10: ...ports no handshaking is needed Hence either a complete or a simplified null modem cable may be used On COM2 pin 1 provides a 5V DC voltage e g to allow feeding a Bluetooth device Minimal null modem connection Receiver side ODU 7 pins male 1 2 GND 3 CTS 4 RTS 5 RxD 6 TxD 7 PC side DSUB9 female 1 CD 2 RxD 3 TxD 4 DTR 5 GND 6 DSR 7 RTS 8 CTS 9 RI Null modem connection with RTS CTS support Receiver si...

Page 11: ... by Septentrio Receiver side ODU 7 pins male 1 5V 2 GND 3 CTS 4 RTS 5 RxD 6 TxD 7 Bluetooth Dongle Side DSUB9 male 1 CD 2 RxD 3 TxD 4 DTR 5 GND 6 DSR 7 RTS 8 CTS 9 RI 2 2 2 USB Receiver side ODU 5 pins male 1 USB_VBus 2 USB_D 3 USB_D 4 GND 5 PC side 1 VCC 2 D 3 D 4 GND 2 2 3 Ethernet Pin Description 1 TxD 2 TxD 3 RxD 4 RxD Pin Description 1 USB_Vbus 2 USB_D 3 USB_D 4 GND 5 Not used 1 4 ...

Page 12: ...igital inputs and outputs Pin Description 1 not used 2 GND 3 GP1 output 3 3V CMOS Use the command setGPIOFunctionality to set the level of this pin 4 RESET 3 3V CMOS 10k pull up resistor Must be low for at least 1ms for RESET to occur 5 EVENTA 3 3V CMOS 5V tolerant 4 7k pull down resistor This is the first digital input for external event timing see Firmware User Manual for operation 6 EVENTB 3 3V...

Page 13: ...rning Exceeding 12 0V for VANT or drawing more than 200mA from the antenna connector can permanently damage the receiver 2 2 5 Power Connector If you are using a different power adaptor than the one provided by Septentrio make sure that it can sustain a current of 1 5A 2 2 6 Status LEDs The behaviour of the LOGLED PVTLED GPLED and TRACKLED is described in the Firmware User Manual Pin Description 1...

Page 14: ...nternal Logging PolaRx3e receivers contain a 2 GByte SD memory card for internal file logging Refer to the How to section of the Firmware User Manual to learn how to use this feature To prevent data corruption logging is protected against accidental power outages There is no need to unmount the SD memory card before switching off the receiver ...

Page 15: ...ver TCP IP connection is to use the telnet program specifying port number 28784 For example if your receiver hostname is c9F6914 communication with port 28784 can be established by using telnet c9F6914 28784 From that moment on everything that is typed is sent to the receiver and the replies from the receiver are displayed on the screen Note that the prompt on the TCP IP connection is COM3 This is...

Page 16: ...y a fixed IP address subnet mask and gateway to impose a fixed IP address 5 Click Apply Settings in the blue left pane to store the new setting The other settings such as the Serial Tunnel settings have been preconfigured by Septentrio for optimal performance with the receiver and should not be changed In particular do not click on Apply Defaults For more detailed documentation on the WiPort Web M...

Page 17: ...1 DC2 DC1 Note in that last command it is assumed that serial connection A is COM1 Please replace COM1 by COM2 USB1 or USB2 as applicable 2 From serial connection B enter the following command to unreset the WiPort device sgpf gp3 levellow 3 Quickly go back to serial connection A and enter three lowercase x characters no later than 3 seconds after having completed step 2 above This causes the WiPo...

Page 18: ...t Family Hardware Manual v1 1 0 18 5 Hardware Specifications 5 1 Size Size 285 x 140 x 37 mm Weight 930 g 5 2 Power Consumption Average 4 5 to 5 W Peak at start up 7 5W Peak current at power connector at start up 1 1A Voltage range 9 to 30V DC 5 3 Temperature Range Operational 40 to 60 C Storage 55 to 85 C ...

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