GSS6300M
Multi-Channel GNSS
Simulator
Datasheet With Product Specification
Datasheet MS3085 Issue 3-10 July 2014
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
PROPRIETARY INFORMATION
THE INFORMATION CONTAINED IN THIS DOCUMENT IS THE PROPERTY OF SPIRENT COMMUNICATIONS PLC.
EXCEPT AS SPECIFICALLY AUTHORISED IN WRITING BY SPIRENT COMMUNICATIONS PLC, THE HOLDER OF THIS
DOCUMENT SHALL KEEP ALL INFORMATION CONTAINED HEREIN CONFIDENTIAL AND SHALL PROTECT SAME IN
WHOLE OR IN PART FROM DISCLOSURE AND DISSEMINATION TO ALL THIRD PARTIES TO THE SAME DEGREE IT
PROTECTS ITS OWN CONFIDENTIAL INFORMATION.
© COPYRIGHT SPIRENT COMMUNICATIONS PLC 2009 - 2014.
The ownership of all other registered trademarks used in this document is duly acknowledged
2
Datasheet MS3085 Issue 3-10 July 2014
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
Table of Contents
Purpose of this document .............................................................................................................................................. 5
Key features ................................................................................................................................................................... 6
How the GSS6300M Multi-channel GNSS Simulator works ...................................................................................... 8
GSS6300 Compatibility ................................................................................................................................................... 9
Hardware Description ...................................................................................................................................................... 9
Performance ................................................................................................................................................................ 10
Software and Control .................................................................................................................................................. 15
Deliverables .................................................................................................................................................................... 21
Applicable Documents .................................................................................................................................................. 21
Appendix A.
Remote Commands ............................................................................................................................. 22
Appendix B.
GNSS Out of Band Spectral Purity .................................................................................................... 24
Appendix C.
Product Description Codes ................................................................................................................ 25
List of Tables
Table 1 Supported constellations ...................................................................................................................................... 8
Table 2 Signal Characteristics ......................................................................................................................................... 10
Table 3 Coaxial Connections ........................................................................................................................................... 11
Table 4 Digital Connectivity (D-Type) .............................................................................................................................. 12
Table 5 GPS / SBAS / QZSS D-type output settings....................................................................................................... 12
Table 6 GLONASS D-type output settings ...................................................................................................................... 13
Table 7 Galileo E1b D-type output settings ..................................................................................................................... 13
Table 8 Galileo E1c D-type output settings ..................................................................................................................... 13
Table 9 BeiDou-2 GEO D-type output settings ................................................................................................................ 13
Table 10 BeiDou-2 MEO D-type output settings ............................................................................................................. 14
Table 11 Other Connections ............................................................................................................................................ 14
Table 12 Interfaces ......................................................................................................................................................... 18
Table 13 Physical and Electrical ...................................................................................................................................... 19
Table 13 Deliverable Items .............................................................................................................................................. 21
Table 14 Applicable Documents ...................................................................................................................................... 21
Table 15 Common Remote Commands .......................................................................................................................... 22
Table 16 Product Description Codes ............................................................................................................................... 25
List of Figures
Figure 1 GSS6300M Multi-channel GNSS Simulator (typical front panel) ........................................................................ 9
Figure 2 GSS6300M Multi-channel GNSS Simulator Rear Panel (typical) ..................................................................... 14
Figure 3 SimCHAN typical screenshot ............................................................................................................................ 15
Figure 4 SimCHAN Enhancement pack typical screenshot: Sky Plot view of satellites.................................................. 16
Figure 5 SimCHAN Enhancement pack typical screenshot: Custom trajectories using google maps ............................ 16
Figure 6 Typical front panel ............................................................................................................................................. 19
Datasheet MS3085 Issue 3-10 July 2014
3
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
4
Datasheet MS3085 Issue 3-10 July 2014
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
Purpose of this document
This datasheet describes the GSS6300M Multi-channel GNSS simulator and its functionality.
This datasheet also provides technical data and configuration information. Please speak to your Spirent sales
representative before ordering.
Datasheet MS3085 Issue 3-10 July 2014
5
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
About the GSS6300M Multi-channel GNSS Simulator
The GSS6300M is designed to enable fundamental performance evaluation of GPS or multi-GNSS
receivers, systems and applications. The GSS6300M is easy to set up and to use, is integrated in a single
unit, has auto start and continuous run modes, and can be controlled via a range of interfaces.
The GSS6300M retains the signal fidelity and stability that is an essential element of all Spirent RF
constellation simulators. Complete navigation data is generated in real time across all constellations and
dates. The system can be upgraded as constellations and test needs grow.
The GSS6300M generates L1/E1 signals from GPS, BeiDou, GLONASS, Galileo, QZSS and SBAS.
Constellations and other features are enabled by licence key. The unit features an integrated controller.
Test set up can be accomplished flexibly via either monitor / keyboard / mouse, from any browser or
mobile device or using remote commands.
The GSS6300M supports test engineers, production test technicians and system integrators both in the
field and on the bench by allowing them to quickly create test cases to evaluate fundamental receiver
performance parameters such as
-
Cold\Hot\Warm TTFF (time to first fix)
-
Acquisition sensitivity
-
Dynamic range
-
Tracking sensitivity
-
Reacquisition time
-
Power level accuracy
-
Position accuracy for static or moving vehicle
Key features
 Multi-GNSS
-
GPS/SBAS/QZSS, GLONASS and Galileo or BeiDou supported in a single chassis
-
Can be supplied equipped with 1, 2, 3 or 4 constellations enabled
-
GPS L1 , SBAS , QZSS L1 C/A Code
-
GLONASS L1 C/A Code
-
Galileo E1 B/C
-
BeiDou BD-2 B1I
-
4 or 8 independent channels of each primary constellation
-
Dynamic satellite selection using dilution of precision criteria allows navigation even with 4
channels
1
 Accurate, Comprehensive Positioning Testing
1
6
-
Simulate 3D position in real time
-
User control over test parameters including power level, user position, date, time, atmospheric
condition, Doppler, PRN and data message.
-
Conduct essential performance tests including time to first fix, acquisition sensitivity and
positioning accuracy.
Simultaneous Galileo and BeiDou operation is supported with dual chassis configuration
Datasheet MS3085 Issue 3-10 July 2014
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
 Flexible and Easy to Use

-
User control over test parameters with interactive run time control
-
Class leading accuracy, fidelity and reliability
-
Fine power level control
-
GPIB (IEEE488), Ethernet, or USB control interface
-
Field upgradable to add constellations and/or software enhancement pack
3
More features with software enhancement pack (optional)
-
Vehicle motion
•
Select from static, circular (configurable circumference & speed), rectangular and 3GPP TS
25.171 defined trajectories
•
SimROUTE application (included) - Generate route-matched trajectory data from Google
Maps®
-
Continuous run mode : Allows for a scenario to run indefinitely
-
Add realistic receiver antenna pattern and multipath effects
-
Real-time visualisation of calculated position of device under test data with truth (simulation) data
-
Add environmental effects including tropospheric (wet or dry) and ionospheric correction
-
Configure leap second events
-
Sky Plot view of the visible simulated satellites
-
AutoSTART: Selected scenario starts automatically each time simulator is powered on
3
Adapter and appropriate software configuration required for GPIB or USB control
4
requires internet connectivity
Datasheet MS3085 Issue 3-10 July 2014
7
4
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
What the GSS6300M Multi-channel GNSS Simulator does
The GSS6300M Multi-channel GNSS Simulator provides coherent simulated signals from
GPS\SBAS\QZSS, GLONASS and Galileo or BeiDou BD2 satellites at the L1 / E1 / B1 frequency.
Systems where Galileo and BeiDou2 are required simultaneously are supported with two interconnected
chassis.
Generation of signals from the various constellations is enabled by licence key. The number of channels
available per constellations is dependent on the type of licence key purchased whether 4 or 8 channels.
Each constellation either functions in 4 or 8 channels mode.
In 4 Channel configurations - If five licence keys are present, the GSS6300M Multi-channel GNSS
Simulator can generate 20 channels (in total) of various constellations concurrently. Channel arrangement
can be as follows: 4 channels of GPS/SBAS, 4 channels of GLONASS, 4 channels of BeiDou-2, 4
channels of QZSS and 4 channels of Galileo concurrently.
In 8 Channel configurations - If five licence keys are present, the GSS6300M Multi-channel GNSS
Simulator can generate 36 channels (in total) of various constellations concurrently. Channel arrangement
can be as follows: 8 channels of GPS/SBAS, 8 channels of GLONASS, 8 channels of BeiDou-2, 8
6
channels of Galileo and 4 channels of QZSS concurrently.
Table 1 Supported constellations
Constellation
GPS L1 C/A , SBAS L1
Number of channels supported
7
4 or 8
GLONASS L1 C/A
4 or 8
BeiDou B-2 B1
4 or 8
Galileo E1 B/C
4 or 8
QZSS L1 C/A
4
The GSS6300M is controlled either using remote commands or via the supplied software application
®
package SimCHAN for Windows .
The GSS6300M generates similar RF signals to those that would be seen by a GNSS receiver, when
installed on a vehicle with date, time and place pre-defined in a test “scenario”.
Unlike testing with live-sky signals, the users of a GSS6300M can repeat precisely the same simulation at
any time or location to compare a number of receivers under identical test conditions.
The GSS6300M also supports single channel mode and direct control of the hardware via remote
commands.
How the GSS6300M Multi-channel GNSS Simulator works
The GSS6300M supports two modes of operation – integrated into an ATE (automated test equipment)
environment using remote control functions or using the supplied SimCHAN software.
For automated operation, the GSS6300M can be synchronised with other equipment and controlled
remotely over Ethernet or USB ports on the inbuilt controller PC running SimCHAN software. When
operating in single channel GSS6300 mode the GSS6300M provides identical mode of operation to
GSS6300 and provides remote control over IEEE-488(GPIB) ports available on the hardware.
Using the SimCHAN software interface, supplied with the GSS6300M, the user is able to create unlimited
scenarios and specify parameters such as user position, date and time. The software enhancement pack
offers additional flexibility including motion and other effects.
8
Both modes support precise user control over power level and atmospheric effect selection.
6
With 8 channels of GPS and 4 channels of QZSS enabled, following channel configurations can be supported
8 GPS only
8 GPS + 4 QZSS
7
SBAS has a shared allocation(up to 3 SBAS channels) with GPS channels
8
Datasheet MS3085 Issue 3-10 July 2014
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
The GSS6300M can be easily controlled from a tablet or smartphone directly over Wi-Fi or through
9
remote desktop\VNC on any network . The unit can also be controlled by connecting a mouse, keyboard
and monitor.
GSS6300 Compatibility
The GSS6300M supports single channel GSS6300 operation.
Performance of a GSS6300M running in single channel 6300 mode has been verified to be equivalent to
a GSS6300.
The GSS6300M when running in GSS6300 single channel mode, provides the same mode of operation as the
GSS6300 and shares the same remote command instruction set. Please refer to MS3063 GSS6300 specification
for more details on the single channel operation and performance.
If you have any questions about the GSS6300 compatibility with earlier Spirent products, please contact
Spirent.
Hardware Description
General
The GSS6300M Multi-channel GNSS Simulator is housed in a 2U, full width rack-mountable case and is
powered via the ac mains connector. The rear panel mounted fan provides forced-air cooling.
The GSS6300M Multi-channel GNSS Simulator uses direct digital waveform synthesis to provide a lowcost, stable instrument with very low life-cycle support costs.
The GSS6300M includes an in-built controller PC; there is no need for an external PC or software to
operate the unit.
Figure 1 GSS6300M Multi-channel GNSS Simulator (typical front panel)
The primary RF output is fitted on the front of the unit. Most other connections are accessed via the rearpanel. Calibration adjustments (recommended annually) may also be made via the rear panel, without
removing the unit from a rack or other typical mounting. A USB port is also available on the front panel.
Frequency accuracy is derived from a high-stability ovenised crystal oscillator fitted internally and its
signal is made available for external use. Alternatively, the generator may be locked to an external
frequency reference signal as described in Table 3 Coaxial Connections. The frequency of the external
reference is software selectable.
The simulator can be synchronised with other test equipment using its 1PPS input and output signals.
Built-In-Test-Equipment (BITE) data are available via the IEEE-488 interface. This enables any control
software to check that the simulator is operating correctly.
Signal Generator performance is defined in Table 2 of this datasheet.
8
9
Not applicable when operating in GSS6300 single channel mode
Requires a wireless USB adapter
Datasheet MS3085 Issue 3-10 July 2014
9
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
Performance
Table 2 Signal Characteristics
Parameter
Comment
Value
10
Signal Sources
Signal Codes
Signal Dynamics
Signal Bandwidths
In-band
12
spectral purity
Out-of-band Spectral
Purity
(within Bands specified)
Harmonics
Phase noise close to
unmodulated carrier
Time Synchronisation
between GNSS signals
Nominal signal power at
Primary RF port
GPS L1 or SBAS
GLONASS L1
Galileo E1
BeiDou BD2 B1I
QZSS
GPS L1 C/A
SBAS L1 C/A
GLONASS L1 C/A
Galileo E1-B/C CBOC
BeiDou BD2 B1I
QZSS L1 C/A
Maximum Relative Velocity
Maximum Relative Acceleration
Maximum Relative Jerk
Maximum Angular rate (1.5m lever
arm)
GPS L1, Galileo E1 and QZSS L1
Beidou B1
GLONASS L1
Referred to unmodulated carrier power
at RF output
GNSS 1500 to 1700 MHz
Referred to unmodulated carrier power
at RF output
Integrated between 1 Hz and 10 kHz
(Single Sideband)
Adjustable pseudorange
Resolution
GPS L1
SBAS L1
GLONASS L1
15
Galileo E1
BeiDou B1I
QZSS L1
Primary RF to Mon Cal
port power offset
Note
Signal power control
Per channel (+15 to -20dB from
nominal)
Resolution
16
Units
4 or 8
4 or 8
4 or 8
4 or 8
4
1 – 63
120 -138
-7 to +6
1 - 50
1 – 37
182 – 202
±15,000
±450
±500
channels
channels
11
channels
channels
channels
PRN
PRN
Channels
PRN
PRN
PRN
m/s
2
m/s
3
m/s
2π
rad/s
20
16
10
MHz
MHz
MHz
< -30
13
dBc
< -95
14
dBm
<-40
dBc
< 0.02
rad RMS
±1
1
-130
-130
-131
-127.0
-133.0
-130
ms
ns
dBm
dBm
dBm
dBm
dBm
dBm
Nominal 57
dB
35
dB
0.1
dB
10
Upto 3 SBAS channel can be simulated from shared allocation of GPS channels.
Galileo and BeiDou concurrently are possible with the addition of a second chassis
12
‘in band’ refers to applicable constellation signal bandwidth.
13
At nominal RF output power and above.
14
Refer to Appendix B for details
15
Power specified with B and C codes present.
16
The specific offset is measured precisely on a unit by unit basis, and provided with each unit. The GSS6300M
provides both the calibrated front-panel RF output port (Primary RF) for testing, and a rear-panel output port (MON
CAL) at a fixed power offset to allow monitoring of the un-calibrated signal at a high-level, and a means of calibrating
the primary RF. Both ports are isolated to dc voltages.
11
10
Datasheet MS3085 Issue 3-10 July 2014
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
Parameter
External Reference
Frequency Input
Comment
Nominal carrier frequency
External Reference Power
External Trigger Input
1PPS OUT to RF Delay
(Per constellation)
Value
Units
Selectable
10, 5, 1
MHz
GPS L1/SBAS L1/Galileo E1/QZSS L1
GLONASS L1, Channel 0
BeiDou B1I
5 or 10MHz
(sine or square wave)
1MHz
(square wave)
To control start of simulation
(TTL logic levels, rising edge trigger)
Timing uncertainty between a rising
transition on 1PPS OUT port and its
corresponding event on the Primary RF
port.
1575.42
1602
1561.098
-5 to +10
0 to +10
MHz
MHz
MHz
dBm
dBm
>2
µs pulse
0±5
nsecs 1σ (RSS)
ref: 1PPS OUT
1.5v into 50 ohm
10
Hz
Channel Hardware Update
Rate
Connectivity
Table 3 Coaxial Connections
Signal
Type
Detail
Description
OUT
COAXIAL Type ‘N’ Female
Front Panel
Provides the primary RF GNSS signal
output at specified levels.
50 ohm VSWR <1.2:1 (in band).
17
DC isolated.
OUT
COAXIAL Type ‘SMA’
Female
Rear panel
Provides a high level output to support
calibration with a power meter.
50 ohm VSWR <1.45:1 (at L1).
17
DC isolated.
External Reference
IN
COAXIAL Type ‘BNC’
Socket
Rear Panel
Allows the GSS6300M to be locked to an
external reference.
5 or 10 MHz sine or square wave
1MHz square wave
INT REF OUT
Internal Reference
Oscillator
OUT
COAXIAL Type ‘BNC’
Socket
Rear Panel
10 MHz sine
0 dBm minimum 50 ohm
TRIGGER
IN
COAXIAL Type ‘BNC’
Socket
Rear Panel
A trigger pulse input to allow an external
signal to start the simulation.
TTL level compatible 50 ohm
Primary RF port
CAL Output
Baseband codes and clock signals for each GNSS signal present may be accessed through a 25way D-type external connector; see Table 4
17
DC Isolation can withstand a maximum DC level of ±60V and reverse RF levels to a maximum of 1W.
Datasheet MS3085 Issue 3-10 July 2014
11
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
Table 4 Digital Connectivity (D-Type)
Signal
Type
Description
1PPS
OUT
1 pulse every second (independent of Doppler setting)
The 1PPS OUT pulse width is 100 ms
1PPS
IN
1 pulse every second
PRN Code
OUT
The pseudorandom ranging code chip sequence for a specified constellation
(synchronous with Chip Clock).
18
Output changes depending on constellation specified , see Table 5 to Table
10.
Chip Clock
OUT
1.023 MHz or 511kHz nominal (varies with Doppler setting).
18
Output changes depending on constellation specified , see Table 5 to Table
10.
Code Epoch
OUT
One pulse every cycle of the PRN code.
18
Output changes depending on constellation specified , see Table 5 to Table
10.
Data Bit stream /
Secondary PRN
code
OUT
Output changes depending on constellation specified , see Table 5 to Table
10
1 Second Epoch
OUT
1PPS based on chip clock (varies with Doppler setting).
18
Output changes depending on constellation specified , see Table 5 to Table
10.
18
When multiple constellations are enabled, one user-selectable GNSS baseband signal set is available at
a time. The GNSS required is pre-selected by the user. See Table 5 through Table 10 for baseband
signal set variants.
All outputs are TTL compatible and capable of driving loads to 50 ohm. Inputs are 50 ohm terminated.
Signal Ground returns are included.
Table 5 GPS / SBAS / QZSS D-type output settings
Signal
Type
Description
PRN Code
OUT
The GPS / SBAS / QZSS pseudorandom ranging code chip
sequence (synchronous with Chip Clock).
Chip Clock
OUT
1.023 MHz nominal (varies with Doppler setting)
Code Epoch
OUT
One pulse every cycle of the PRN code
Data Bit stream
OUT
GPS / SBAS / QZSS auNavigation data message
1Sec Epoch
OUT
1PPS based on chip clock (varies with Doppler setting)
18
When multiple constellations are in use a user setting can be specified. If no user setting is specified a default
setting is selected.
12
Datasheet MS3085 Issue 3-10 July 2014
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
Table 6 GLONASS D-type output settings
Signal
Type
Description
PRN Code
OUT
The GLONASS pseudorandom ranging code chip sequence
(synchronous with Chip Clock).
Chip Clock
OUT
511 kHz nominal (varies with Doppler setting)
Code Epoch
OUT
One pulse every cycle of the PRN code
Data Bit stream
OUT
GLONASS Navigation data message, including meander
sequence
1Sec Epoch
OUT
1PPS based on chip clock (varies with Doppler setting)
Table 7 Galileo E1b D-type output settings
Signal
Type
Description
PRN Code
OUT
The Galileo E1b pseudorandom ranging code chip sequence
(synchronous with Chip Clock).
Chip Clock
OUT
1.023 MHz nominal (varies with Doppler setting)
Code Epoch
OUT
One pulse every cycle of the PRN code
Data Bit stream
OUT
Galileo E1b Navigation data message
1Sec Epoch
OUT
1PPS based on chip clock (varies with Doppler setting)
Table 8 Galileo E1c D-type output settings
Signal
Type
Description
PRN Code
OUT
The Galileo E1c Primary code pseudorandom ranging code chip
sequence (synchronous with Chip Clock)
Chip Clock
OUT
1.023 MHz nominal (varies with Doppler setting)
Code Epoch
OUT
One pulse every cycle of the PRN Primary code
Data Bit stream
OUT
The “exclusive or” combination of the Galileo E1c Primary code
and E1c secondary code
1Sec Epoch
OUT
1PPS based on chip clock (varies with Doppler setting)
Table 9 BeiDou-2 GEO D-type output settings
Signal
Type
Description
OUT
The BeiDou-2 primary pseudorandom ranging code chip
sequence (synchronous with Chip Clock)
Chip Clock
OUT
2.046 MHz nominal (varies with Doppler setting)
Code Epoch
OUT
One pulse every cycle of the PRN code
Data Bit stream
OUT
BeiDou-2 500Hz Navigation data message
1 Second Epoch
OUT
1PPS based on chip clock (varies with Doppler setting)
PRN Code
Datasheet MS3085 Issue 3-10 July 2014
13
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
Table 10 BeiDou-2 MEO D-type output settings
Signal
Type
Description
OUT
The BeiDou-2 primary or secondary pseudorandom ranging code
chip sequence (synchronous with Chip Clock)
Chip Clock
OUT
2.046 MHz nominal (varies with Doppler setting)
Code Epoch
OUT
One pulse every cycle of the PRN code
Data Bit stream
OUT
BeiDou-2 50Hz Navigation data message
1 Second Epoch
OUT
1PPS based on chip clock (varies with Doppler setting)
PRN Code
Table 11 Other Connections
Connector
Type
Description
Auxiliary Control Interface IEEE-488. Available for use when running the
GSS6300M in GSS6300 single channel mode.
HOST IEEE
Comm
For variable length commands, the maximum command length is 2048
characters, which includes the line terminating NULL character (decimal value:
0)
Alternative Control Interface using USB 2.0, 3.0
USB
Comm
Suitable for ATE applications
Also provides direct access to the integrated controller file system
Ethernet
Comm
Primary means to remote control the GSS6300M using standard Ethernet port.
Figure 2 GSS6300M Multi-channel GNSS Simulator Rear Panel (typical)
14
Datasheet MS3085 Issue 3-10 July 2014
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
Software and Control
SimCHAN Software
®
The GSS6300M Multi-channel GNSS Simulator is supplied with a Microsoft Windows 7compatible
software package called SimCHAN. SimCHAN allows full control of the GSS6300M and provides the user
the capability to simulate GNSS signals and edit parameters including power level, user position, date,
time, atmospheric condition, Doppler, PRN and data message.
SimCHAN software enhancement pack (optional) provides added functionality, allowing user to create
custom trajectories using Google maps or select from pre-configured trajectories. Realistic antenna
pattern, multipath and environmental (tropospheric, ionosphere) effects can also be enabled amongst
other features.
SimCHAN has a graphical user interface (GUI) which is designed to be simple to use. All parameters are
entered in engineering units and operator-entered parameters are checked to be within range. The mode
of operation is readily visible on a Toolbar control.
The application window allows all parameters to be entered and reviewed. The form may be saved and
re-loaded allowing a user to build sets of standard test cases and quickly switch between them.
Figure 3 SimCHAN typical screenshot
Datasheet MS3085 Issue 3-10 July 2014
15
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
Figure 4 SimCHAN Enhancement pack typical screenshot: Sky Plot view of satellites
Figure 5 SimCHAN Enhancement pack typical screenshot: Custom trajectories using Google
maps
16
Datasheet MS3085 Issue 3-10 July 2014
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
Operating Mode
The GSS6300M can be operated in two modes – multi-channel simulation or GSS6300 single channel
mode. The GSS6300M with integrated controller PC is referred to as GSS6300M-I.
In multi-channel operation the hardware can be controlled manually using the SimCHAN user interface or
via remote commands using SimCHAN software. Manual control is enabled by connecting
monitor/keyboard/mouse (see below). Remote control of the system is enabled using Ethernet and USB
ports on the inbuilt controller. PC configuration for remote control operation is handled by SimCHAN.
The GSS6300M, when used in GSS6300 single channel mode, provides identical control and test
functionality to the GSS6300 single channel simulator.
It is possible to operate the 6300M by direct or remote commands depending on user setup (as per
Figure 6 below) and interfaces used (in Table 12). Direct commands can be sent through GPIB (IEEE488) and can only be used for single channel operation. For full multi-channel remote operation use of
remote commands is advised.
Figure 6 Setup
Direct Commands - Single channel
operation only
Remote Commands
GSS6300M with integrated PC controller
GSS6300M without integrated PC controller
19
GSS6300M shipped prior to July’2014 do NOT have integrated controller PC.
Datasheet MS3085 Issue 3-10 July 2014
17
19
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
Table 12 Interfaces
Port
IEEE (GPIB)
RS-232
Ethernet
USB
Connection
Rear panel of simulator
SimCHAN controller PC
SimCHAN controller PC
Rear\front panel of
Simulator
Direct commands
Yes
No
No
No
Remote commands
Yes(via USB adapter)
Yes(via USB adapter)
Yes
Yes
USB Control
May be used to either plug mouse, keyboard & monitor to control the SimCHAN running on the integrated
controller PC or to control GSS6300M remotely by sending remote commands.
The USB ports may also be used to connect a compatible Wi-Fi dongle, to control the GSS6300M
remotely through a laptop or tablet PC, over Wi-Fi.
GPIB Control
When running in GSS6300 single channel mode, IEEE-488 interface is available as control interface for
the signal generator. This interface may be used by a program or application created by the customer. All
commands are available on this interface, including those that contain binary data. All the hardware
features of the unit may be controlled and varied via this industry standard (IEEE-488.1) interface.
APPENDIX A lists the most common of the available GPIB commands.
Ethernet Control
Provides network connectivity to the integrated PC controller. Enables complete remote desktop access
to the controller, file transfers and remote control of GSS6300M using remote commands.
18
Datasheet MS3085 Issue 3-10 July 2014
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
Environmental and Physical
Table 13 Physical and Electrical
Parameter
Value
Dimensions, nominal
449 mm x 386 mm x 89 mm (W x D x H)
(17.75 inch x 15.25 inch x 3.5 inch)
Approx. 7.62 kg (Approx. 16.8 lb)
Weight
Signal Generator (approx.)
Temperature
Operating Humidity
o
o
+10°C to + 40 C (50°F to 104 F)
40 to 90% RH (non-condensing)
o
o
Temperature
Storage Humidity
-40°C to + 60 C (-40°F to 140 F)
20 to 90% RH (non-condensing)
Electrical
Voltage
Power Consumption
Frequency
100 to 240 V ac (auto sensed)
<100 W
50 to 60 Hz
Figure 6 Typical front panel
Calibration Requirements
The GSS6300M Multi-channel GNSS Simulator must be calibrated at 12 monthly intervals to guarantee
performance within specification. The GSS6300M has been designed to be easy to calibrate, requiring a
minimum of expertise and time, and all adjusters are available externally on the rear panel of the
simulator.
If the GSS6300M is to be used for very accurate absolute frequency measurements it is advisable to
either check the absolute frequency of the simulator’s internal frequency oscillator or to frequency-lock
the unit to an external reference. A calibrated frequency counter is required to measure 10.00 MHz with a
resolution of 0.05 Hz. A frequency adjust control is provided on the rear panel of the unit.
The output power level may be checked and/or adjusted (via rear panel) whilst monitoring the higher level
RF port specifically provided for this purpose. A calibrated power meter capable of measuring a signal of
around -50 dBm at 1.57542 GHz is required.
Datasheet MS3085 Issue 3-10 July 2014
19
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
INTEGRATED COMPUTER CONTROLLER SPECIFICATION
•
•
•
•
•
•
•
Computer running Windows 7 32-Bit operating system
th
CPU: 4 Gen 1.7MHz or faster processor
4GB or more RAM
60GB SSD hard disk
USB: 1 front panel USB port for convenient access when rack mounted, 4 rear panel USB ports
1 x 100MHz Ethernet port
1 x HDMI VDU Port packaged with HDMI to DVI converter.
To operate the device the user must supply mains power to the unit and then turn on the power switch
located on the rear panel. The Integrated PC Controller will automatically power on in conjunction with
the GNSS simulator.
The user can then choose to Shut down and Start the Integrated PC controllers Windows 7 operating
system using the front panel CPU switch.
SAFETY AND EMC CONFORMITY
The GSS6300M Multi-channel GNSS Simulator complies with the Low Voltage Directive (LVD)
2006/95/EC by application of the following harmonised standard:
EN60950-1:2006/A12:2011 Information technology equipment. Safety. General requirements.
The GSS6300M Multi-channel GNSS Simulator complies with the EEC EMC Directive 2004/108/EC by
application of the following harmonised standard:
EN61326-1: 2013 Electrical Equipment for Measurement, Control and Laboratory Use. EMC
requirements. General requirements.
20
Datasheet MS3085 Issue 3-10 July 2014
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
Deliverables
Table 14 Deliverable Items
Item No.
Quantity
Component
Comment
1
1
GSS6300M Multi-channel GNSS
Simulator
GNSS capability provided depends upon Order
Code specified. Please check your quote to confirm
that the desired constellations and features are
included.
2
1
HDMI to DVI VDU Adapter
To adapt the HDMI output to a standard DVI
Monitor input.
3
1
Power cable
Country specific
4
1
Licence Key
Defines the system capability. May be pre-installed
or supplied electronically on registration (for
upgrades)
5
1
Hardware Configuration file
Defines the system hardware capability
6
1
Multi-box cable
Optional. Provided by default with product
configurations requiring two or more GSS6300M
units to be connected together.
Applicable Documents
Table 15 Applicable Documents
Reference
Title
Issue
Date
ICD-GPS-200F
Navstar GPS Space Segment / Navigation User Interfaces
Rev D
Dec 04
OS SIS ICD
Galileo Open Service Signal-in-Space Interface Control Document
Issue 1.1
Sep 10
-
GLONASS Interface Control Document
5.0
Sep 02
BDS-SIS-ICDB1I-1.0 201212
BeiDou Signal-in-Space Interface Control Document Open Service
B1I
1.0
Dec 12
RTCA-DO229
WAAS MOPS
C
Nov 01
MS3063
GSS6300 Multi-GNSS Generator
2-40
Mar 11
IS-QZSS
Interface Specification (draft)
1.2
Mar 10
Datasheet MS3085 Issue 3-10 July 2014
21
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
Appendix A. Remote Commands
Table 16 Common Remote Commands
Command
Description
Configuring a scenario
START_TIME
Set the simulation start time, date and duration
FW_CMD
Pass commands directly to the signal generator
INIT_POS
Override the current simulation initial position
SET_ANT_FREQS
Set the constellations and frequencies
SC
Load a scenario file
RU_NOWAIT
Run the currently selected scenario
LOAD_ALMANAC
Load a YUMA format almanac file
LOAD_ANY_FILE
Load a specified atmosphere file into the scenario
POW_LEV
Set the power level by Channel or satellite
EN
End the currently running scenario
Navigation data commands
SET_NAV
Enable navigation data message
GAL_DATA_ERR
Enter Galileo navigation data errors
GLONASS_NAV_DATA_ERR
Enter GLONASS navigation data errors
GPS_NAV_DATA_ERR
Enter GPS ‘L1 Legacy’ navigation data errors
SBAS_DATA_ERR
Enter SBAS navigation data errors
Single channel mode commands
SET_DIR_PR
Run in single channel mode
SET_DIR_INIT_PR
Set the initial pseudorange
SET_DIR_PROFILE
Set a user velocity profile
SET_DIR_SV
Set the satellite SVID
SET_DIR_VEL
Set the velocity and carrier Doppler offset
SET_PRN_CODE
Set the PRN
Vehicle commands
VEH_LAT
Returns the latitude of the vehicle
VEH_LONG
Returns the longitude of the vehicle
Power commands
22
POW_ON
Turn on/off RF power at a specified time
REF_DBM
Set the reference power level
POW_LEV
Set the RF power level by Channel or satellite
Datasheet MS3085 Issue 3-10 July 2014
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
Command
Description
Miscellaneous commands
TR
Set the trigger mode
*IDN?
Returns the identity of the SimCHAN software
RFO
Returns signal generator serial number and
difference in signal level at front panel port and
rear panel MON/CAL port
GET_GSS6300_HW
Returns the capability of the GSS6300
NULL
Returns the status information
Datasheet MS3085 Issue 3-10 July 2014
23
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
Appendix B. GNSS Out of Band Spectral Purity
The expected signal power level that could be obtained at the Mon/Cal port is computed as:
PExpected (dBm) = PReference + POffset + PMON/CAL to RF
where:
PExpected : Expected power level
PReference : Constellation specific reference power level
POffset : Maximum power level offset wrt reference power level
PMon/CAL to RF : Constellation specific Mon/Cal to RF power level difference range from 56dB to 59dB. For
worst case situation, 56dB is used in the calculation.
By specifying the the GNSS out of band spurious to -95dBm, the carrier to spurious ratio is:
C/N (dBc) = PExpected - GNSS out of band spurious
24
Datasheet MS3085 Issue 3-10 July 2014
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
Appendix C. Product Description Codes
The GSS6300M is available with one or more of the GNSS constellations installed. Constellations can be
purchased either in 4 or 8 channel configurations in conjunction with signal generator chassis, per Table
1. It is recommended that in correspondence with Spirent the following product codes are used.
Simultaneous Galileo and BeiDou operation is currently only supported under dual chassis configuration
20
Note that constellations not specified at initial purchase may be enabled subsequently by a
straightforward field upgrade process. This process does not require the unit to be returned to the factory
and can be performed by the user.
To enable more features SimCHAN enhancement pack can be purchased, either at the time of initial
purchase or subsequently, without needing to return the unit back to factory
Table 17 Product Description Codes
Code
Type
6300-1008
Signal generator chassis
6300-1009
Signal generator
chassis(auxiliary)
6300-1010
Signal generator chassis
6300-1002
Signal generator
chassis(auxiliary)
Description
4 CHANNEL SIG GEN CHASSIS WITH EMBEDDED
CONTROLLER
4 CHANNEL SIGNAL GENERATOR CHASSIS W AUX
8 CHANNEL SIG GEN CHASSIS WITH EMBEDDED
CONTROLLER
8 CHANNEL SIGNAL GENERATOR CHASSIS WITH AUX
6300-3158
Constellation license
ADD 4 CHANNEL GPS ELECTRONIC FEATURE KEY FOR
GSS6300M
6300-3159
Constellation license
ADD 4 CHANNEL GLO ELECRONIC FEATURE KEY FOR
GSS6300M
6300-3161
Constellation license
ADD 4 CHANNEL GALILEO ELECTRONIC FEATURE KEY FOR
GSS6300M
6300-3165
Constellation license
ADD 4 CHANNEL BEIDOU ELECTRONIC FEATURE KEY FOR
GSS6300M
6300-3169
Constellation license
ADD 4 CHANNEL QZSS ELECTRONIC FEATURE KEY FOR
GSS6300M
6300-3058
Constellation license
ADD 8 CHANNEL GPS ELECTRONIC FEATURE KEY FOR
GSS6300M
6300-3059
Constellation license
ADD 8 CHANNEL GLONASS ELECTRONIC FEATURE KEY FOR
GSS6300M
6300-3061
Constellation license
ADD 8 CHANNEL GALILEO ELECTRONIC FEATURE KEY FOR
GSS6300M
20
Upgrade configurations will be confirmed during quote\order process. Please contact your nearest Spirent
representative for more information.
Datasheet MS3085 Issue 3-10 July 2014
25
Spirent Communications | GSS6300M Multi-GNSS Simulator Datasheet
6300-3065
Constellation license
6300-4001
Additional
software(optional)
ADD 8 CHANNEL BEIDOU ELECTRONIC FEATURE KEY FOR
GSS6300M
SimCHAN Enhancement software pack
Additional configurations and upgrade codes are available. Existing GSS6300 customers can also
upgrade their existing units in the field to multi-channel GSS6300M capability. Please contact Spirent for
further information.
26
Datasheet MS3085 Issue 3-10 July 2014