Meinberg GNS165XHS User manual

MANUAL
GNS165XHS
DIN Rail GNSS Receiver
5th June 2018
Meinberg Funkuhren GmbH & Co. KG

Table of Contents
1 Imprint 1
2 Safety Hints 2
2.1 Common Security Hints ........................................... 2
2.2 Used Symbols ................................................. 3
2.3 Security during Installation ......................................... 4
2.4 Safety during Operation ........................................... 7
2.5 Safety during Maintenance ......................................... 8
2.6 Handling Batteries .............................................. 8
2.7 Antenna Mounting .............................................. 9
2.8 Cleaning and Care .............................................. 10
2.9 Prevention of ESD Damage ......................................... 10
2.10 Return of Electrical and Electronic Equipment .............................. 11
3 Content of the USB stick 12
4 General information about GNS165 13
5 GNS165 Features 15
5.1 Time Zone and Daylight Saving ...................................... 15
5.2 Pulse outputs ................................................. 16
5.3 Asynchronous Serial Ports ......................................... 16
5.4 Time code outputs .............................................. 17
5.4.1 Introduction .............................................. 17
5.4.2 Generated Time Codes ....................................... 17
5.4.3 Time Code Generation ....................................... 18
5.4.4 IRIG Standard Format ....................................... 19
5.4.5 AFNOR Standard Format ..................................... 20
5.4.6 Assignment of CF Segment in IEEE1344 Code ......................... 21
5.4.7 DCF77 Emulation .......................................... 22
6 Installation 23
6.1 Technical data GNS165 Chassis ...................................... 23
6.2 Power supply ................................................. 23
6.3 40dB Multi GNSS L1 Timing Antenna with Integrated Lightning Protection ............ 24
6.3.1 GNSS Antenna for Stationary Installation ........................... 24
6.3.2 GNSS Antenna for Mobile Applications ............................. 26
6.4 Powering Up the System .......................................... 27
6.5 Meinberg Device Manager ......................................... 28
7 The Front Panel Layout 30
7.1 Front Panel Connectors GNS165 ..................................... 30
7.2 GNS Status LEDs .............................................. 30
7.3 Assignment of the terminal block ...................................... 31
7.4 Assignment of the DSUB connectors ................................... 32
7.5 GNSS Antenna ................................................ 32
7.6 DCF77 Simulated Output .......................................... 33
7.7 Time Code AM Output ............................................ 33
7.8 Time Code DCLS Output .......................................... 33
7.9 Power Supply Connector .......................................... 34
8 Technical Specifications GNS165 receiver 35
8.1 Connection Data ............................................... 37
0

8.2 Time Strings .................................................. 38
8.2.1 Format of the Meinberg Standard Time String ......................... 38
8.2.2 Format of the SAT Time String .................................. 39
8.2.3 Format of the NMEA 0183 String (RMC) ............................ 40
8.2.4 Format of the NMEA 0183 String (GGA) ............................ 41
8.2.5 Format of the NMEA 0183 String (ZDA) ............................. 42
8.2.6 Format of the Uni Erlangen String (NTP) ............................ 43
8.2.7 Format of the Computime Time String .............................. 45
8.2.8 Format of the SYSPLEX-1 Time String ............................. 46
8.2.9 Format of the SPA Time String .................................. 47
8.2.10 Format of the RACAL standard Time String ........................... 48
8.2.11 Format of the Meinberg GPS Time String ............................ 49
8.2.12 Format of the ION Time String .................................. 50
8.2.13 Format of the ION Blanked Time String ............................. 51
8.2.14 Format of the IRIG J Time String ................................. 52
8.3 Oscillator specifications ........................................... 53
9 Declaration of Conformity 54
Date: 5th June 2018 GNS165XHS

1 Imprint
1 Imprint
Meinberg Funkuhren GmbH & Co. KG
Lange Wand 9, 31812 Bad Pyrmont / Germany
Phone: + 49 (0) 52 81 / 93 09 - 0
Fax: + 49 (0) 52 81 / 93 09 - 230
Internet: https://www.meinbergglobal.com
Mail: [email protected]
Date: 2017-12-18
GNS165XHS Date: 5th June 2018 1

2 Safety Hints
2.1 Common Security Hints
The following safety instructions must be respected in all operating and installation phases of the device. Non-
observance of safety instructions, or rather special warnings and operating instructions in product manuals,
violates safety standards, manufacturer instructions and proper usage of the device. Meinberg Funkuhren shall
not be responsible for any damage arising due to non-observance of these regulations.
The danger classification is carried out in accordance with ISO 3864-2 and ANSI Z535.6 and with assis-
tance of the following keywords.
•Danger, Warning and Caution for personal injury as well as
•Attention, for material damage.
If a procedure is marked with this indication, you may only continue, if you have understood and fulfilled all
requirements. In this documentation dangers and indications are classified and illustrated as follows:
DANGER!
The signal word indicates an imminently hazardous
situation with a high risk level. This notice draws
attention to an operating procedure or similar pro-
ceedings, of which a non-observance may result in
serious personal injury or death.
WARNING!
The signal word indicates a hazard with a medium risk
gradient. This notice draws attention to an operating
procedure, a procedure or the like which, if not fol-
lowed, can lead to serious injuries, possibly resulting
in death.
CAUTION!
The signal word indicates a hazard with a low risk
gradient. This notice draws attention to an operating
procedure, a procedure or the like which, if not fol-
lowed, can lead to minor injuries.
ATTENTION!
This notice draws attention to an operating procedure,
a procedure or the like which, if not followed, can cause
damage to the product or loss of important data.
2 Date: 5th June 2018 GNS165XHS

2 Safety Hints
2.2 Used Symbols
The following symbols and pictograms are used in this manual. To illustrate the source of danger, pictograms
are used, which can occur in all hazard classes.
Symbol Beschreibung / Description
IEC 60417-5031
Gleichstrom / Direct current
IEC 60417-5032
Wechselstrom / Alternating current
IEC 60417-5017
Erdungsanschluss / Earth (ground) terminal
IEC 60417-501
Schutzleiteranschluss / Protective earth (ground) terminal
ISO 7000-0434A
Vorsicht / Caution
IEC 60417-6042
Vorsicht, Risiko eines elektrischen Schlages / Caution, risk of electric shock
IEC 60417-5041
Vorsicht, heiße Oberfläche / Caution, hot surface
IEC 60417-6056
Vorsicht, Gefährlich sich bewegende Teile / Caution, moving fan blades
IEC 60417-6172
Trennen Sie alle Netzstecker / Disconnection, all power plugs
Elektrostatisch gefährdete Bauteile / Electrostatic Sensitive Devices
2012/1 /EU
Dieses Produkt fällt unter die B2B Kategorie. Zur Entsorgung muss es an den Hersteller übergeben
werden.
his product is handled as a B2B category product. In order to secure a WEEE compliant waste
disposal it has to be returned to the manufacturer.
The manuals for a product are included in the scope of delivery of the device on a USB stick. The manu-
als can also be obtained via the Internet. Enter www.meinbergglobal.com into your browser, then enter the
corresponding device name in the search field at the top.
GNS165XHS Date: 5th June 2018 3

This manual contains important
safety instructions for the instal-
lation and operation of the device.
Please read this manual completely
before using the unit.
This device may only be used for
the purpose described in this man-
ual. In particular, the given limits
of the device must be observed. The
safety of the installation in which
the unit is integrated is the respon-
sibility of the installer!
Non-observance of these instruc-
tions can lead to a reduction in the
safety of this device!
Please keep this manual in a safe
place.
This manual is intended exclusively for electricians or persons trained by an electrician who are familiar with
the applicable national standards and safety rules. Installation, commissioning and operation of this device may
only be carried out by qualified personnel.
2.3 Security during Installation
Preparing for Commissioning
This built-in unit, has been de-
signed and examined according to
the requirements of the standard
IEC 60950-1 „Information Technol-
ogy Equipment - Safety".
When the built-in unit is used in
a terminal (e.g., housing cabinet),
additional requirements accord-
ing to Standard IEC 60950-1 must
be observed and complied with.
In particular, the general require-
ments and the safety of electrical
equipment (such as IEC, VDE, DIN,
ANSI) as well as the applicable na-
tional standards are to be observed.
The device has been developed
for use in the industrial sector as
well as in residential areas and can
only be used in such environments.
For environments with higher levels
of soiling, additional measures, e.g.
Installation in an air-conditioned
control cabinet required.
Transport, Unpacking,
Installation
If the unit is brought into the oper-
ating room from a cold environment,
condensation may occur, wait until
the unit is temperature-controlled
and absolutely dry before operating
it.
When unpacking, setting up, and
before operating the equipment, be
sure to read the information on the
hardware installation and the spec-
ifications of the equipment. These
include, for example, dimensions,
electrical characteristics, and nec-
essary ambient and climatic condi-
tions, etc.
The fire protection must be en-
sured in the installed state.
For mounting, the housing must
not be damaged. No holes may be
drilled in the housing.
For safety reasons, the device with
the highest mass should be in-
stalled in the lowest position of the
rack. Other devices must be placed
from the bottom to the top.
The device must be protected
against mechanical stress such as
vibration or shock.
4 Date: 5th June 2018 GNS165XHS

2 Safety Hints
Connecting Data Cables
During a thunderstorm, data trans-
mission lines must not be connected
or disconnected (risk of lightning).
When wiring the devices, the cables
must be connected or disconnected
in the order of the arrangement de-
scribed in the user documentation
accompanying the device. Always
attach all cables to the plug during
connection and removal. Never pull
the cable itself. Pulling the cable
can cause the cables to disconnect
from the plug.
Install the cables in way that they
do not constitute a hazard (danger
of tripping) and are not damaged,
i.e. kinked.
Connecting Power Supply
This equipment is operated at
a hazardous voltage. Non-
observance of the safety instruc-
tions in this manual may result in
serious personal injury or property
damage.
Before connecting to the power
supply, a grounding cable must be
connected to the earth connection
of the device.
Before operation, check that all
cables and lines work properly and
are undamaged. Pay particular at-
tention to the facts that the cables
do not have kinks or that they are
not too short around corners, and
no objects are placed on the cables.
Also make sure that all connections
are secure. Faulty shielding or
cabling will endanger your health
(electrical shock) and may destroy
other equipment.
Ensure that all necessary safety
precautions have been taken. Make
all connections to a unit before
turning on the power. Observe the
safety instructions on the device
(see safety symbols).
The metal housing of the device is
grounded. It must be ensured that
enough air and creepage distances
to neighboring voltage-carrying
parts are provided during assembly
in the control cabinet and no short
circuits are caused.
In the case of malfunctions or
servicing (e.g. in the event of a
damaged housing or power cable
or when fluids or foreign objects
enter), the current flow can be in-
terrupted. Questions about the
house installation, need to be clari-
fied with your house administration.
The power supply should be con-
nected with a short, low-inductance
line.
GNS165XHS Date: 5th June 2018 5

AC Power Supply
•This device is a device of "Protection Class 1" and may only be connected to a grounded socket (TN
system).
•For safe operation, the device must be protected by an installation fuse of max. 16 A and equipped with
a residual current circuit breaker in accordance with the applicable national standards.
•The unit must always be disconnected from mains first and not from the appliance.
•Devices with mains plugs are equipped with a safety-tested mains cable of the country it is deployed in
and may only be connected to a properly grounded earthing contact socket, otherwise electric shock is
expected.
•Ensure that the socket on the appliance or the mains socket of the house installation is freely accessible
to the user, so that the mains cable can be pulled out of the socket in case of emergency.
DC Power Supply
•In accordance with the provisions of EN 60950-1 the device must be disconnectable outside the system
(e.g. by the primary line protection).
•Installation and disassembly of the voltage supply plug is only permitted when the module is switched off
(e.g. by the primary line protection).
•The supply lines must be adequately protected and dimensioned.
Fuse:
T3A
(T = Time / SB = SlowBlow)
Cross-sectional area:
1 mm2- 2,5 mm217 AWG - 13 AWG
•Supply of the device must be carried out via a suitable disconnecting device (switch). The disconnecting
device must be easily accessible, placed near the system and marked as a disconnecting device.
6 Date: 5th June 2018 GNS165XHS

2 Safety Hints
2.4 Safety during Operation
Avoiding Short-Circuits
Make sure not to get any objects
or liquids inside the unit. Electric
shock or short circuit could result.
Ventilation Slots
Make sure that the ventilation slots
are not covered or dusty, as there
is a danger of overheating during
operation. Disturbances during op-
eration can result.
Normal Operation
The normal operation and the ob-
servance of the EMC limits (elec-
tromagnetic compatibility) are only
ensured if the housing cover is prop-
erly installed and when the doors
are closed (cooling, fire protection,
shielding against electrical, mag-
netic and electromagnetic fields).
Switch off in fault / service case
By switching off, the devices are
not disconnected from the power
supply. In the event of a fault or
service case, the devices must be
immediately disconnected from all
power supplies.
Follow the steps below:
•Switch off the device
•Disconnect all power plugs
•Inform the service
•Devices that are connected
via one or more uninterrupt-
ible power supplies (UPS) re-
main operational even when
the UPS power cord is dis-
connected. Therefore, you
must put the UPS out of op-
eration according to the doc-
umentation of the correspond-
ing user documentation.
GNS165XHS Date: 5th June 2018 7

2.5 Safety during Maintenance
When you are expanding the de-
vice, use only device parts that
are approved for the system. Non-
observance may result in injury to
the EMC or safety standards and
cause malfunction of the device.
If device parts, which are released
for the system, are extended or re-
moved there may be a risk of injury
in the area of the hands, due to the
pull-out forces (approx. 60 N).
The service informs you which de-
vice parts may be installed.
The device must not be opened,
repairs to the device may only be
carried out by the manufacturer or
by authorized personnel. Improper
repairs can result in considerable
danger to the user (electric shock,
fire hazard).
Unauthorized opening of the device
or of individual parts of the device
can also lead to considerable risks
for the user and result in a loss of
warranty as well as an exclusion of
liability.
•Danger due to moving parts -
keep away from moving parts.
•Device parts can become very
hot during operation. Do
not touch these surfaces! If
necessary, switch off the unit
before installing or removing
any equipment, and allow it
to cool down.
2.6 Handling Batteries
The lithium battery on the receiver
modules has a service life of at
least 10 years. If an exchange is
necessary, the following notes must
be observed:
The device is equipped with a
lithium battery. The battery must
not be short-circuited or recharged.
Replacement of the lithium battery
may only be carried out by the
manufacturer or authorized person-
nel.
Risk of explosion if the battery is
not replaced correctly. Replace
only with the same or equivalent
type recommended by the manufac-
turer.
When disposing used batteries,
observe the local regulations for
the disposal of hazardous waste.
8 Date: 5th June 2018 GNS165XHS

2 Safety Hints
2.7 Antenna Mounting
WARNING!
No antenna mounting without ef-
fective fall protection.
Risk of death by falling!
•Make sure you that have an
effective occupational safety
during antenna installation!
•Never work without effective
fall protection!
WARNING!
Working on the antenna system
during thunderstorms
Danger to life due to electric
shock!
•Do not carry out any work on
the antenna system or the an-
tenna cable if there is a risk
of lightning strikes.
•Do not carry out any work
on the antenna system if the
safety distance to overhead
lines is not guaranteed.
GNS165XHS Date: 5th June 2018 9

2.8 Cleaning and Care
Do not wet clean the appliance!
Penetrating water can cause con-
siderable dangers to the user (e.g.,
electric shock).
Liquid can destroy the electron-
ics of the device! Liquid penetrates
into the housing of the device and
can cause a short circuit of the
electronics.
Only clean with a soft, dry cloth.
Never use solvents or cleaners.
2.9 Prevention of ESD Damage
The designation ESD (Electro-
static Sensitive Devices) refers to
measures which are used to pro-
tect electrostatically endangered
components from electrostatic dis-
charge and thus to prevent destruc-
tion. Systems and assemblies with
electrostatically endangered com-
ponents usually have the following
characteristics:
Indicator for assemblies with elec-
trostatic endangered components
The following measures protect
electrostatically endangered com-
ponents from destruction:
Prepare removal and
installation of assemblies
Unload yourself (for example, by
touching a grounded object) before
touching assemblies.
Ensure that you wear a ground-
ing strap on the wrist when work-
ing with such assemblies, which
you attach to an unpainted, non-
conductive metal part of the system.
Use only tools and devices that
are free from static electricity.
Transporting Assemblies
Assemblies may only be touched at
the edge. Do not touch any pins or
conductors on assemblies.
Installing and Removing Assemblies
Do not touch persons who are not
grounded while removing or in-
stalling components. This could
result in a loss of grounding pro-
tection from your electrostatic dis-
charge.
Storing Assemblies
Always keep assemblies in ESD
protective covers. These protec-
tive covers must be undamaged.
ESD protective covers, which are
extremely wrinkled or even have
holes, no longer protect against
electrostatic discharge.
ESD protective covers must not
be low-resistance and metallically
conductive if a lithium battery is
installed on the assembly.
10 Date: 5th June 2018 GNS165XHS

2 Safety Hints
2.10 Return of Electrical and Electronic Equipment
WEEE Directive on Waste Elec-
trical and Electronic Equipment
2012/19 / EU
(WEEE Waste Electrical and Elec-
tronic Equipment)
Separate Collection
Product Category: According to the
device types listed in the WEEE
Directive, Appendix 1, this product
is classified as an IT and communi-
cation device.
This product meets the labeling
requirements of the WEEE Direc-
tive. The product symbol on the
left indicates that this electronic
product must not be disposed of in
domestic waste.
Return and Collection Systems
For returning your old equipment,
please use the country-specific re-
turn and collection systems avail-
able to you or contact Meinberg.
The withdrawal may be refused in
the case of waste equipment which
presents a risk to human health or
safety due to contamination during
use.
Return of used Batteries
Batteries marked with one of the
following symbols may not be dis-
posed of together with the house-
hold waste according to the EU
Directive.
GNS165XHS Date: 5th June 2018 11

3 Content of the USB stick
Besides this manual, the provided USB stick includes a setup program for the monitor software mbgdevman
(Meinberg Device Manager). This utility can be used to configure Meinberg receivers via their serial ports and
to display status information of the module.
The software is executable under the
following operating systems:
- Windows 10
- Windows 8.1
- Windows 8
- Windows 7
- Ubuntu
- Mint Linux
- Debian
- SUSE Linux
- CentOS
https://www.meinberg.de/german/sw/mbg-devman.htm
12 Date: 5th June 2018 GNS165XHS

4 General information about GNS165
4 General information about GNS165
The Meinberg satellite receiver clock of the GNS165 series is available with several options. This manual
describes the following models:
GNS165DHS
GNS165DAHS
GNS165/AQ/DHS
GNS165/AQ/DAHS
20-60 V DC 100-240 V AC 100-240 V DC PhotoMos
relay outputs
Optocoupler
outputs
GNS165DHS
GNS165DHS
TC
AM
- DC in
- PP 1
- PP 2
- PP 3
+RS-485
+TC_422
TC_TTL
TC_FET
+ DC in
+ PP 1
+ PP 2
+ PP 3
- RS-485
- TC_422
GND
GND
DC in: 20-60V
- X1
5
9
1
6
C
O
M
1
5
9
1
6
TC PP 3
PP 2PP 1
Init Fail
AntNav
DCF 77
Out
Antenna
GNSS | L1 | 5 V
Power
GNS165DAHS
TC
AM
- DC in
- PP 1
- PP 2
- PP 3
+RS-485
+TC_422
TC_TTL
TC_FET
+ DC in
+ PP 1
+ PP 2
+ PP 3
- RS-485
- TC_422
GND
GND
- X1
5
9
1
6
C
O
M
1
5
9
1
6
TC PP 3
PP 2PP 1
Init Fail
AntNav
DCF 77
Out
GNS165DAHS
Antenna
GNSS | L1 | 5 V
The variants differ in power supply and the type of DC-isolation of the programmable pulse outputs. The
differences are described in the relevant chapters, the name GNS165 is used whenever common features of all
types of clocks are specified.
The satellite receiver clock GNS165 has been designed to provide an extremly precise time reference for
the generation of programmable pulses. High precision available 24 hours a day around the whole world is
the main feature of the new system which receives it’s information from the satellites of the Global Positioning
System.
The satellites of most Global Navigation Satellite Systems (GNSS) like GPS,GLONASS, and Galileo are
not stationary but circle round the globe in periods of several hours. Only few GNSS systems like the Chinese
Beidou system work with stationary satellites. Such systems can only be received in certain regions of the Earth.
GNSS receivers need to track at least four satellites to determine their own position in space (x, y, z) as
well as their time offset from the GNSS system time (t). Only if the receiver can determine its own position
accurately the propagation delay of the satellite signals can also be compensated accurately, which is require-
ment to yield an accurate time. If the receiver position can only be determined less accurately then the accuracy
of the derived time is also degraded.
GNS165XHS Date: 5th June 2018 13

GNSS satellite signals can only be received directly if no building is in the line-of-sight from the antenna
to the satellite. The signals can eventually be reflected at buildings, etc., and the reflected signals can then be
received. However, in this case the true signal propagation path is longer than expected, which causes a small
error in the computed position, which in turn yields less accurate time.
Since most of the satellites are not stationary, the antenna has to be installed in a location with as much
clear view of the sky as possible (e.g. on a rooftop) to allow for continuous, reliable reception and operation.
Best reception is achieved when the antenna has a free view of 8◦angular elevation above the horizon. If
this is not possible then the antenna should be installed with the best free view to the sky in direction of the
equator. Since the satellite orbits are located between latitudes 55◦North and 55◦South, this allows for the
best possible reception.
All the satellites are monitored by control stations which determine the exact orbit parameters as well as
the clock offset of the satellites´ on-board atomic clocks. These parameters are uploaded to the satellites and
become part of a navigation message which is retransmitted by the satellites in order to pass that information
to the user´s receiver.
The high precision orbit parameters of a satellite are called ephemeris parameters whereas a reduced pre-
cision subset of the ephemeris parameters is called a satellite´s almanac. While ephemeris parameters must
be evaluated to compute the receiver´s position and clock offset, almanac parameters are used to check which
satellites are in view from a given receiver position at a given time. Each satellite transmits its own set of
ephemeris parameters and almanac parameters of all existing satellites.
14 Date: 5th June 2018 GNS165XHS

5 GNS165 Features
5 GNS165 Features
The GNS165 is designed for mounting on a DIN rail. The front panel integrates eight LED indicators, an termi-
nal block, two DSUB, two BNC-connectors and one SMA connector. The receiver is linked to the Multi-GNSS
Antenna by a coaxial cable with length up to 70 m (when using Belden H155 low loss cable). It is possible
to connect up to four receivers to one antenna by using an optional antenna diplexer. Additional outputs are
described below
The navigation message coming from the satellites is decoded by GNS165’s microprocessor in order to track
the GNSS system time with an accuracy of better than +- 100nsec. Compensation of the RF signal’s propa-
gation delay is done by automatical determination of the receiver’s position on the globe. A correction value
computed from the satellites’ navigation messages increases the accuracy of the board’s TCXO to ±5x10-9 and
automatically compensates the oscillators aging. The last recent value is restored from the battery memory at
power-up.
5.1 Time Zone and Daylight Saving
GPS system time differs from the universal time scale UTC (Universal Time Coordinated) by the number of leap
seconds which have been inserted into the UTC time scale after GPS has been initiated in 1980. The current
number of leap seconds is part of the navigation message supplied by the satellites, so GPS170SV´s internal
real time is based on UTC.
Conversion to local time including handling of daylight saving year by year can be done by the receiver´s
microprocessor. As standard the switchover times are set to the values of the European Union (Central Europe).
The Manual describes how parameter setting for other locations is done. It is possible to deactivate the auto-
matic switching to/from daylight saving.
GNS165XHS Date: 5th June 2018 15

5.2 Pulse outputs
The pulse generator of the satellite controlled clock GNS165 containes three independant channels and is able
to generate a multitude of different pulses, which are configured with the software mbgdevman. The active
state of each channel is invertible, the pulse duration settable between 10 msec and 10sec in steps of 10 msec.
In the default mode of operation the pulse outputs are disabled unti the the receiver has synchronized after
power-up. The pulse outputs are electrically insulated by optocouplers or PhotoMOS relays and are available
at the terminal block.
The following modes can be configured for each channel independently:
Timer mode: Three on- and off-times per day per channel programmable
Cyclic mode: Generation of peropdically repeated pulses.
A cycle time of two seconds would generate a pulse at
0:00:00, 0:00:02, 0:00:04 etc.
DCF77-Simulation
mode: The corresponding output simulates the DCF77 time telegram.
The time marks are representing the local time as configured by the user.
Single Shot Mode: A single pulse of programmable length is generated once a day at a
programmable point of time
Per Sec.
Per Min.
Per Hr. modes: Pulses each second, minute or hour
Status: One of three status messages can be emitted:
’position OK’: The output is switched on if the receiver was able to
compute its position
’time sync’: The output is switched on if the internal timing is
synchronous to the GNS165-system
’all sync’: Logical AND of the above status messages.
The output is active if position is calculated AND the
timing is synchronized
Time code The un-modulated IRIG or AFNOR signal of the built in time code generator
is made available at the respective output.
Idle-mode: The output is inactive.
Synthesizer: Frequency output 0 Hz to 10 MHz
5.3 Asynchronous Serial Ports
One RS-485 serial interface and two asynchronous serial interface (RS-232) are available to the user. In
the default mode of operation, the serial outputs are disabeled until the receiver has synchonized after power
up. However, the system can be configured to enable those outputs immediately after power-up. Transmission
speeds, framings and the kind of the time string can be configured separately. The serial ports are sending a
time string either once per second, once per minute or on request with ASCII "?" only. The format of the output
strings is ASCII, see the technical specifications for details. The corresponding parameters can be set up by
mbgdevman (included Windows software) using serial port COM0.
16 Date: 5th June 2018 GNS165XHS