rtd SYNC25104HR User manual

RTD Embedded Technologies, Inc.
AS9100 and ISO 9001 Certified
SYNC25104HR/SYNC35104HR
GPS Disciplined Oscillator with Frequency Synthesizer
User’s Manual
BDM-610020154 Rev. A

RTD Embedded Technologies, Inc.
103 Innovation Boulevard
State College, PA 16803 USA
Telephone: [phone]
Fax: [phone]
www.rtd.com
[e-mail]
[e-mail]

RTD Embedded Technologies, Inc. | www.rtd.com iii SYNC25104HR/SYNC35104HR User’s Manual
Revision History
Rev A Initial Release
Rev B Added Magnetometer 12 position calibration procedure picture.
Added new calibration commands
Added notes which commands require the latest firmware.
Added IDAN connector information
Added COCOM Limits Section
Advanced Analog I/O, Advanced Digital I/O, aAIO, aDIO, a2DIO, Autonomous SmartCal, “Catch the Express”, cpuModule, dspFramewo
rk, dspModule, eBuild, expressMate, ExpressPlatform, “MIL Value for COTS
prices”, multiPort, PlatformBus, and PC/104EZ are trademarks, and “Accessing the Analog World”, dataModule, IDAN, HiDAN, HiDA
Nplus, RTD, the RTD logo, and StackNET are registered trademarks of RTD
Embedded Technologies, Inc. (for
merly Real Time Devices, Inc.). PS/2 is a trademark of International Business Machines Inc. PCI, PCI Express, and PCIe are trademarks of PCI-SIG. PC/104, PC/104-Plus,
PCI
-104, PCIe/104, PCI/104-Express and 104 are trademarks of the PC/104 Consortium. All other trademarks appearing in this document are the property of their respective owners.
Failure to follow the instructions found in this manual may result in damage to the product described in this manual, or othe
r components of the system. The procedure
set forth in this manual shall only be performed
by persons qualified to service electronic equipment.
Contents and specifications within this manual are given without warranty, and are subject to change without notice. RTD Embedded Technologies, Inc. shall
not be liable for errors or omissions in this manual, or for any loss, damage, or injury in connection with the use of this m
anual.
Copyright
© 2022 by RTD Embedded Technologies, Inc. All rights reserved.

RTD Embedded Technologies, Inc. | www.rtd.com iv SYNC25104HR/SYNC35104HR User’s Manual
Table of Contents
1Introduction 7
1.1 Product Overview........................................................................................................................................................................ 7
1.2 Timing Accuracy Information ...................................................................................................................................................... 7
1.3 Board Features ........................................................................................................................................................................... 8
1.4 Ordering Information................................................................................................................................................................... 9
1.4.1 Cable Kits 9
XK-CM57 9
IDAN-XKCM34 9
1.5 Contact Information .................................................................................................................................................................. 10
1.5.1 Sales Support 10
1.5.2 Technical Support 10
2Specifications 11
2.1 Operating Conditions ................................................................................................................................................................ 11
2.2 Electrical Characteristics .......................................................................................................................................................... 11
3Board Connection 13
3.1 Board Handling Precautions ..................................................................................................................................................... 13
3.2 Physical Characteristics............................................................................................................................................................ 13
3.3 Connectors and Jumpers.......................................................................................................................................................... 14
3.3.1 Bus Connectors 14
CN1(Top) & CN2(Bottom): PCIe Connector 14
CN3: PCI Connector (SYNC25104HR Only) 14
3.3.2 External I/O Connectors 14
CN4: Factory Use Only 14
CN5: SyncBus Connector 14
CN6: Any Frequency Output 15
CN7: GPS Antenna Connector 15
CN8: Time Mark Input 15
CN9: 1PPS Output 15
CN10 and CN11: Any Frequency Outputs 15
CN12: 10MHz Output 15
CN13: Serial I/O Connector 15
3.3.3 Jumpers 16
JP1: SyncBus Termination 16
JP2: GPS Antenna Bias 16
3.3.4 LEDs 16
D1: 1PPS LED 16
D2: TBD 16
D3: TBD 16
D4: Loss of Lock LED 16
3.4 Steps for Installing .................................................................................................................................................................... 16
4IDAN Connections 18
4.1 Module Handling Precautions................................................................................................................................................... 18
4.2 Physical Characteristics............................................................................................................................................................ 18
4.3 Connectors................................................................................................................................................................................ 18
4.3.1 Bus Connectors 18
CN1(Top) & CN2(Bottom): PCIe Connector 18
4.3.2 External I/O Connectors 19
Serial Connector - 9-pin “D” PIN Connector 19
GPS, OUT6, OUT7, 10MHZ, 1PPS & TIME IN Antenna - SMA Female Connector 19
OUT2-5 Connector - 15-pin “D” Socket Connector 20
4.4 Steps for Installing .................................................................................................................................................................... 21

RTD Embedded Technologies, Inc. | www.rtd.com vSYNC25104HR/SYNC35104HR User’s Manual
5Functional Description 22
5.1 Block Diagram........................................................................................................................................................................... 22
5.2 Main Modules............................................................................................................................................................................ 22
5.2.1 GPS Module Interface 22
GPS Antenna 23
COCOM Limits 23
LEA-M8F GNSS Receiver Documentation 23
5.2.2 SI5395 Frequency Synthesizer 23
SI5395 Block Diagram 23
6Software 26
6.1 Installing the Software .............................................................................................................................................................. 26
6.2 Software Package Contents ..................................................................................................................................................... 26
6.2.1 GNSS Receiver Software 26
6.2.2 SI5395 Software 26
6.2.3 Syncbus Software 27
7Troubleshooting 28
8Additional Information 29
8.1 PC/104 Specifications............................................................................................................................................................... 29
8.2 PCI and PCI Express Specification .......................................................................................................................................... 29
9Limited Warranty 30

RTD Embedded Technologies, Inc. | www.rtd.com vi SYNC25104HR/SYNC35104HR User’s Manual
Table of Figures
Figure 1: Board Dimensions ................................................................................................................................................................................... 13
Figure 2: Board Connections .................................................................................................................................................................................. 14
Figure 3: Example 104™Stack ............................................................................................................................................................................... 17
Figure 4: IDAN Dimensions .................................................................................................................................................................................... 18
Figure 5: IDAN Front Panel .................................................................................................................................................................................... 19
Figure 6: Example IDAN System ............................................................................................................................................................................ 21
Figure 7: SYNC35104 Block Diagram .................................................................................................................................................................... 22
Figure 8: SI5395 block diagram.............................................................................................................................................................................. 25
Table of Tables
Table 1: Accuracy ..................................................................................................................................................................................................... 7
Table 2: Ordering Options ........................................................................................................................................................................................ 9
Table 3: Operating Conditions ................................................................................................................................................................................ 11
Table 4: Electrical Characteristics .......................................................................................................................................................................... 11
Table 5: SyncBus lane assignments....................................................................................................................................................................... 15
Table 6: CN6 Any frequency output........................................................................................................................................................................ 15
Table 7: CN13 RS-232 interface............................................................................................................................................................................. 16
Table 8: JP2 Settings.............................................................................................................................................................................................. 16
Table 9: IDAN-SYNC35104HR Serial Connector................................................................................................................................................... 19
Table 10: IDAN-SYNC35104HR OUT2-5 Connector ............................................................................................................................................. 20
Table 11: SI5395 outputs........................................................................................................................................................................................ 23

RTD Embedded Technologies, Inc.
AS9100 and ISO 9001 Certified
1Introduction
1.1 Product Overview
The SYNC25104HR/SYNC35104HR is a GPS disciplined oscillator board which is designed to provide high accuracy frequency and time
reference signals to PC/104 systems and external devices. This board utilizes the u-blox LEA-M8F GPS Receiver which locks the output signal
of a low noise, high precision oven-controlled crystal oscillator (OCXO) to the GNSS satellites. The 10MHz signal from the OCXO is available
on the SyncBus connector, two MMCX connectors and is fed into a low noise synthesizer (SI5395). The synthesizer can generate signals up to
the gigahertz range. The board connects to the CPU via USB. An additional RS232 serial port is also provided to the GPS receiver which can
be used for synchronizing the CPU clock the GNSS. This module can provide +3.3V to active antennas or can be used with passive antennas.
1.2 Timing Accuracy Information
The board provides time and frequency reference which are based on the GNSS system. When the system is powered up, the board
synchronizes itself to the GNSS. Note that the receiver is only functional, when the normal 5V is available, ie. it is not powered from 5V standby
or other power source (eg. battery). After the synchronization process is complete (this may take minutes) the time and frequency accuracy will
be within the specs below. If GNSS signals are lost, the board enters into holdover mode. In this mode, the internal OCXO provides reference
signal to the receiver, therefore the accuracy will be determined by the OCXO. Table 1 summarizes the accuracy of time and frequency outputs
of SYNC25104HR/SYNC35104HR.
Table 1: Accuracy
Parameter
Condition
Value
Time pulse accuracy
clear sky
≤20ns
Indoor
≤500ns
Frequency accuracy
GNSS locked
≤5ppb
hold-over (-20 to 70C°)
±10ppb
OCXO short term stability (Alan variance)
2×10-10 1/s
OCXO aging
Daily
±1ppb
First year
±100ppb
10-years
±500ppb

RTD Embedded Technologies, Inc. | www.rtd.com 8SYNC25104HR/SYNC35104HR User’s Manual
1.3 Board Features
•PC/104 form factor
•Bus Structure Options:
oPCIe/104 (SYNC35104HR)
PCIe universal expansion bus (Type 1 or Type 2)
oPCI/104-Express (SYNC25104HR)
PCIe universal expansion bus (Type 1 or Type 2)
PCI pass-through expansion bus
•USB 2.0 interface
oGNSS receiver is accessible via a USB serial converter
oSynthesizer is accessible via a USB SPI converter
•u-blox LEA-M8F GNSS engine
oL1 1575.42MHz, C/A code
oL1OF 1602MHz
oBeiDou B1 1561.098MHz
oGalileo E1B/C
o72-channel satellite tracking
oPosition accuracy: 2.5m
oTime accuracy of 20ns
o1Hz update rate
oTracking sensitivity down to -165 dBm
oSupported protocols: NMEA-0183 ver. 2.3, 4.0 or 4.1 configurable, UBX, RTCM 2.3
oConstellation System Support:
GPS
GLONASS
GALILEO
BeiDou
QZSS
oDGPS support:
(SBAS) Satellite-Based Augmentation System
(RTCM) Radio Technical Commission for Maritime Services
(WAAS) Wide-Area Augmentation System
(EGNOS) European Geo-Stationary Navigation System
(MSAS) MTSAT Satellite-Based Augmentation System
(GAGAN) GPS-Aided Geo-Augmented Navigation
•Supports active (+3.3V) and passive antennas
•SI5395 ultra low jitter clock multiplier
o8 any frequency outputs
4 differential outputs on a 100mil header
2 single ended outputs on MMCX connectors
2 differential outputs on the SyncBus connector (Bus LVDS)
oSoftware configurable output standard and frequency
Differential: 100Hz-1028MHz
LVCMOS (single-ended): 100Hz-250MHz
•Requires only +5 VDC for operation

RTD Embedded Technologies, Inc. | www.rtd.com 9SYNC25104HR/SYNC35104HR User’s Manual
1.4 Ordering Information
The SYNC35104/SYNC25104 is available with the following options:
Table 2: Ordering Options
Part Number
Description
SYNC35104HR
PCIe/104 GPS disciplined oscillator with frequency synthesizer
SK-SYNC35104HR
Starter Kit including SYNC35104HR, adapter cable, and antenna (XK-
CM##)
SYNC25104HR
PCI/104 Express GPS disciplined oscillator with frequency synthesizer
SK- SYNC25104HR
Starter Kit including SYNC25104HR, adapter cable, and antenna (XK-
CM##)
IDAN- SYNC35104HRS
PCIe/104 GPSDO module in modular IDAN frame
IDAN- SK-SYNC35104HRS
PCIe/104 GPSDO module in modular IDAN frame;
with cables and antennae kit (IDAN-XKCM34)
IDAN- SYNC25104HRS
PCI/104 Express GPSDO module in modular IDAN frame
IDAN-SK- SYNC25104HRS
PCI/104 Express GPSDO module in modular IDAN frame;
with cables and antennae kit (IDAN-XKCM34)
The Intelligent Data Acquisition Node (IDAN™) building block can be used in just about any combination with other IDAN building blocks to
create a simple but rugged 104™ stack. This module can also be incorporated in a custom-built RTD HiDAN™ or HiDANplus®High Reliability
Intelligent Data Acquisition Node. Contact RTD sales for more information on our high reliability systems.
1.4.1 CABLE KITS
XK-CM57
The XK-CM57 is a GPS antenna for use with the stand-alone SYNC25104HR/SYNC35104HR.
•50-Ohm MCX Plug connector
o1.575 GHz Magnetic
o+5 VDC Active Antenna
oMagnetic Base Mount
•Dimensions
oCable length: 16 feet
oHeight: 0.5 inches
oBase: 1.8 inches square
•Weight: < 1 lbs.
•Operating temperature, 90% humidity non-condensing: -40 to +85C
•Storage temperature, -40 to +85C
IDAN-XKCM34
The IDAN-XKCM34 is a GPS antenna for use with the IDAN-SYNC25104HR and IDAN-SYNC35104HR.
•50-Ohm SMA connector
o1.575 GHz Magnetic
o+5 VDC Active Antenna
oMagnetic Base Mount
•Dimensions
oCable length: 16 feet
oHeight: 0.5 inches
oBase: 1.8 inches square
•Weight: < 1 lbs.
•Operating temperature, 90% humidity non-condensing: -40 to +85C
•Storage temperature, -40 to +85C

RTD Embedded Technologies, Inc. | www.rtd.com 10 SYNC25104HR/SYNC35104HR User’s Manual
1.5 Contact Information
1.5.1 SALES SUPPORT
For sales inquiries, you can contact RTD Embedded Technologies sales via the following methods:
Phone: [phone] Monday through Friday, 8:00am to 5:00pm (EST).
E-Mail: s[email protected]om
1.5.2 TECHNICAL SUPPORT
If you are having problems with you system, please try the steps in the Troubleshooting section of this manual.
For help with this product, or any other product made by RTD, you can contact RTD Embedded Technologies technical support via the
following methods:
Phone: [phone] Monday through Friday, 8:00am to 5:00pm (EST).
E-Mail: [e-mail]