INSTRUCTION MANUAL
GPS RECEIVER UNIT
HHGP1
6 F 2 S 0 7 3 8
©
TOSHIBA Corporation 2001
All Rights Reserved.
( Ver. 1.6 )
6 F 2 S 0 7 3 8
Safety Precautions
Before using this product, please read this chapter carefully.
This chapter describes the safety precautions recommended when using the GPS receiver unit type HHGP1. Before installing and using the equipment, this chapter must be thoroughly read and understood.
Explanation of symbols used
Signal words such as DANGER, WARNING, and two kinds of CAUTION, will be followed by important safety information that must be carefully reviewed.
DANGER
WARNING
Indicates an imminently hazardous situation which will result in death or serious injury if you do not follow the instructions.
Indicates a potentially hazardous situation which could result in death or serious injury if you do not follow the instructions.
CAUTION
Indicates a potentially hazardous situation which if not avoided, may result in minor injury or moderate injury.
CAUTION
Indicates a potentially hazardous situation which if not avoided, may result in property damage.
1
6 F 2 S 0 7 3 8
DANGER
Install a surge arrester between the antenna and the GPS receiver and ground it in accordance with the guidelines in this manual. Otherwise, it may cause electric shocks, injury or malfunction.
WARNING
Do not touch the terminals of this equipment while the power is on, as the high voltage generated is dangerous.
Hazardous voltage can be present in the DC circuit just after switching off the DC power supply.
It takes approximately 30 seconds for the voltage to discharge.
When connecting this equipment via an optical fibre, do not look directly at the optical signal.
CAUTION
• Earth
The earthing terminal of the equipment must be securely earthed.
CAUTION
The equipment must only used within the range of ambient temperature, humidity and dust detailed in the specification and in an environment free of abnormal vibration.
• Ratings
Before applying the DC power supply to the equipment, check that they conform to the equipment ratings.
Carefully handle the connection cable without applying excessive force.
• Modification
Do not modify this equipment, as this may cause the equipment to malfunction.
• Disposal
When disposing of this equipment, do so in a safe manner according to local regulations.
2
6 F 2 S 0 7 3 8
Contents
Safety Precautions 1
1.
Introduction 5
2.
Characteristics 5
3.
Configuration 6
3.1
Configuration of GPS Receiver Unit
3.2
Outline of GPS Receiver Unit and Function
6
7
4.
Handling
4.1
Setting the GPS Receiver Unit
4.2
How to Turn on the Power
4.3
Checking the 1PPS Signal
5.
Operation 10
5.1
1PPS Signal Output
5.2
Time Data Output
10
11
8
8
9
9
6.
Installation 12
6.1
Receipt of GPS Receiver Unit
6.2
Installing GPS Receiver Unit
6.3
Installing Antenna
6.4
Installing Surge Arrester
6.5
Installing Fibre Optics
6.6
Connecting the Power Supply and the Earthing Terminal
12
12
12
15
15
16
7.
Preparation for Installation
7.1
Selecting an Antenna and Cables
7.2
Selecting Coaxial Cables and Conversion Adapters
7.3
Selecting an Antenna Installation Location
8.
Maintenance 19
8.1
Regular Maintenance 19
8.2
Troubleshooting 19
17
17
17
18
3
Appendix A Outline of GPS Rceiver Unit
Appendix B Technical Data
Appendix C Specification of Recommended Antenna and Arrester
Appendix D Supplement
The data given in this manual are subject to change without notice. (Ver. 1.6)
6 F 2 S 0 7 3 8
21
23
27
31
4
6 F 2 S 0 7 3 8
1. Introduction
The GPS (Global Positioning System) receiver unit is a device that receives the information from satellites and outputs time signals synchronous to UTC (Universal Coordinated Time) to external devices. The GPS receiver unit provides multiple outputs with optical signals for noise immunity.
2. Characteristics
■
Highly accurate time signal output
Realizes a precision with respect to ±2
µs for UTC (UTC: Universal Coordinated Time)
(excluding the propagation delay time on the cable).
■
Reduced cabling work
Adopting the signal superimposition method, the unit can be connected to an external device with a single optical fibre only.
■ Application to a large system
Equipped with eight ports for output, the time distribution can be made to multiple devices separated from each other by a maximum of 1 km.
■
High reliability
Aimed at reducing the number of parts through high-integration circuits and high-density mounting technology, thus securing high reliability.
5
6 F 2 S 0 7 3 8
3. Configuration
3.1 Configuration of GPS Receiver Unit
Figure 3.1.1 shows the configuration of the GPS receiver unit.
The GPS receiver unit receives electromagnetic signals from satellites through an antenna and outputs time data to external devices. Through an internal receiver, the unit generates serial time data and 1-second pulses (1PPS signals), based on the received electromagnetic signal. Each
1PPS signal occurs at the instant in time given by its accompanying frame of serial data.
To reduce the number of cables to external devices, time data and 1PPS signals are superimposed through a mixing circuit before being output to the optical fibre.
Antenna
Receiver
Backup
Capacitor
Time data
Mixing Circuit
1 Pulse per second
(1PPS)
E/O E/O
Power supply
+48V
0V
E/O E/O E/O E/O E/O
Fibre-optic Cable
Noise
Filter
DC/DC
Converter
E/O
Electrical-to-optical
Converter
+5V
0V
Figure 3.1.1 Configuration of GPS Receiver Unit
6
3.2 Outline of GPS Receiver Unit and Function
Figure 3.2.1 shows outline and functions of GPS receiver unit.
④
FRONT VIEW
6 F 2 S 0 7 3 8
REAR VIEW
⑤
① ② ③
⑥ ⑦
48V
⑧
No. Device Indication
①
Yellow LED 5 V
Functions
Turns on when the power (5Vdc) is supplied.
②
Yellow LED
③
Red LED
④
DIP switches
1PPS OUT
ERROR
DSW
Blinks when 1PPS signals are output synchronously with UTC.
Turns on when the internal crystal oscillator stops.
⑤
⑥
Signal output ports OPT.OUT
Power supply switch INPUT
Set the GPS receiver unit settings. During operation, these DIP switches are covered to prevent erroneous operations.
Outputs time signals. The optical fibre is connected here.
Turns on or off the power of the GPS receiver unit.
⑦
Terminal block
⑧ Antenna terminal
__
ANT.IN
The 48V dc power is applied and the earth cable is connected.
P: 48Vdc, N: 0Vdc, E: earth
The antenna cable is connected.
Figure 3.2.1 Outline and Functions of GPS Receiver Unit
7
6 F 2 S 0 7 3 8
4. Handling
4.1 Setting the GPS Receiver Unit
The GPS receiver unit is set in accordance with the requirements of the system by using the DIP switches located on the front panel of the unit.
To prevent erroneous operations, the DIP switches are protected with a cover. As shown in
Figure 4.1.1, when the cover is rotated after loosening the cover screw with a screwdriver, the switches are exposed thus making it possible to handle them. Switches are handled with a sharp-pointed object such as a screwdriver and set to “ON” or “OFF” by pushing them up or down respectively. After accessing the switches, tighten the cover screw to its original state.
DSW
１２３４
Figure 4.1.1 Switch Operation Method
Four switches are numbered 1 to 4 from left to right. (The numbers are indicated on their respective switches.)
Table 4.1 shows the function and setting of each switch. (All the switches are set to “OFF” for default setting.)
8
6 F 2 S 0 7 3 8
Switch
No.
Table 4.1 Setting the Switches
Setting
Function
3 change mode Location fixing mode Location estimation mode
High-reliability/TRAIM ON mode change
Optical level test Continuous light emission Normal light emission
2020 – 2039 (Year) 2001 – 2019 (Year) change
Note: Settings can be changed when the power is ON, but changes are not valid until the power has been switched OFF and ON again, except in the case of switch 3 for optical level testing, which is valid immediately.
- In the case of location mode, the location estimation mode (OFF) should be used.
- In the case of reliability/TRAIM, the High-reliability/Train ON mode (SW-OFF) should be used.
- In high-reliability mode, the unit outputs the 1PPS signal only when no failed satellites are detected. In the case of two or more failed satellites, correct operation of the unit cannot be assured.
- In the case of clock range change, the switch should be OFF before 2019 and ON after 2020.
For the details, see the Appendix D.
4.2 How to Turn on the Power
Turn on the power switch. Power ON is confirmed by the illumination of the "5V" LED on the front panel of the unit.
4.3 Checking the 1PPS Signal
After the power is turned on, check that 1PPS signals are output. If 1PPS signals are not output, it is impossible to use the time signals that are output from the GPS receiver unit. Output of 1PPS signals is confirmed by the blinking of the "1PPS OUT" LED on the front panel of the unit.
9
6 F 2 S 0 7 3 8
5. Operation
5.1 1PPS Signal Output
The GPS receiver unit outputs 1PPS signals with each pulse defining the instant of time described by the preceding frame of serial data. (For the time signal transmission format, refer to
Appendix D.)
Following power-up, the GPS receiver begins outputting 1PPS signals after the acquisition of the almanac data and the estimation of the receiver location (or the antenna location to be more exact) are completed.
Almanac data received from the satellites include satellites outline orbit information and UTC time correction parameters. It takes about 12 to 30 minutes to acquire the data.
The almanac data is backed up temporarily following power-down. If power is removed for 16 hours or more, then the data back-up may be lost and will have to be re-acquired on power-up.
If the almanac data back-up is valid on power-up, acquisition of almanac data is unnecessary.
To estimate the location, signals from four or more satellites are required in the case of normal mode; and five or more are required in the case of high-reliability mode.
Note: If the antenna is positioned in the shade of buildings, or in other locations where it is difficult to receive satellite signals, then location estimation may take a longer time or may even be impossible.
If satellites are closely aligned in relation to the receiver, then it may not be possible to achieve a location estimate, even when the necessary numbers of signals are received. The reason for this is that, as the angle between received signals becomes small, the error in location estimation becomes large.
Accordingly, installing an antenna in a location of narrow visual field such as between tall buildings may make the location estimation impossible. When using the high-reliability mode and/or TRAIM function, the alignment of satellites has even stricter limits.
The location estimation may take more than an hour depending on constellation of satellites in case of the high-reliability mode.
The location estimation is required each time the power is turned on.
After the location estimation is completed, the 1PPS signal is output in normal mode if signals from one or more satellites are received; and two or more in high-reliability mode.
The initialization time for the 1PPS signal at power-up varies as shown in Table 5.1.1, depending on the state of the almanac data back-up.
Table 5.1.1 1PPS Output Start Time
Back up of almanac data Initial time needed for 1PPS signal output from power on
Lost 30 seconds to 1 hours (*1)
Available 10 seconds to 1 hours (*1)
(*1) It may take further time depending on constellation of satellites and antenna position.
10
4
3
2
6
5
1
0
Number of receivable satellite signals
Four receivable satellite signals
Five receivable satellite signals
1PPS output
Power ON
6 F 2 S 0 7 3 8
Two receivable satellite signals
One receivable satellite signal
Stop
Time
1PPS output
(In the case of normal mode)
Almanac data reception
(12 to 30 minutes)
1PPS output 1PPS stop 1PPS output
(In the case of highreliability mode)
Figure 5.1.1 Receiving Satellite Signals and 1PPS Output Status
5.2 Time Data Output
On power-up, time data (serial data consisting of year-month-date and hour:minute:second) is output from the receiver's internal RTC (real time clock).
If satellite signals are received, then time data transmitted by the satellite (i.e., GPS time) is output until acquisition of the almanac data is completed. The GPS time deviates from UTC time by an accumulated number of leap seconds.
When reception of the almanac data is completed, then UTC time is output.
Any device receiving this output data can distinguish between the RTC, GPS and UTC time data, since this is indicated in the data itself.
11
6 F 2 S 0 7 3 8
6. Installation
6.1 Receipt of GPS Receiver Unit
When GPS receiver units are received, carry out the acceptance inspection immediately. In particular, check for damage during transportation, and if any is found, contact the vendor.
Always store the GPS receiver units in a clean, dry environment.
6.2 Installing GPS Receiver Unit
CAUTION
Do not remove flanges from the main unit, as this may cause a failure.
The flanges attached to both sides of the unit are used to fix the main unit to a rack or plain table installed in a stable location.
DANGER
A surge arrester must be installed between the antenna and the GPS receiver unit. It must be grounded according to the methods specified in section 6.4 so as to prevent injury or malfunction.
Install the antenna in the specified location in the method shown in the diagrams below.
CAUTION
An improper antenna installation location may cause malfunctions.
Locate the antenna as far as possible from other antennas. If the antenna is located within one meter from other antennas, it may not be possible to receive the GPS signal correctly.
Antenna
Another antenna
Locate over the top of fence.
More than 1 meter
Locate over the top of fence.
12
Don’t locate in shade of obstructing objects (Box, antenna, etc.).
Don’t locate in shade of obstructing objects
(Box, antenna, etc.)
6 F 2 S 0 7 3 8
Next, connect the antenna to the arrestor with a coaxial cable.
The following antennas are recommended: GPA-014B or GPA-017S manufactured by Furuno
Electric Co., Ltd. The specifications for and dimensions of these antennas are described in
Appendix C.
The antenna should be fixed to a support pole with Debe clamps and U bolts. An example installation of the Furuno Electric antenna, using the accompanying clamps, is shown in Figures
6.3.1, 6.3.2 and 6.3.3.
Antenna
Wind the tape to cover the whole of junction and U-shaped gap.
Pipe
Leave the connector slightly loose so that no excessive force is applied.
Connector junction.
Insulation prevention measure
(Autofusion tape, vinyl tape or water-proof cap)
Parker clamp
Auxiliary mounting bracket
Support pole (φ25 to 70)
Convex
Antenna cable
Figure 6.3.1 An Example of Installation, Using GPA-017S for Antenna
13
6 F 2 S 0 7 3 8
Debe clamp
Antenna
Connector junction
Insulation treatment
(Autofusion tape, vinyl tape or water-proof cap)
Fix the cable to the support cable by making a circle while making sure the cable is long enough.
Coaxial cable
Support pole (
φ38 to 64 )
Figure 6.3.2 An Example of Installation, Using GPA-014B for Antenna (A)
Antenna
Leave the connector slightly loose so that no excessive force is applied.
Connector junction.
Parker clamp
Auxiliary mounting bracket
Support pole (
φ27 to 90)
Insulation prevention measure
(Autofusion tape, vinyl tape or water-proof cap)
Tape
Antenna cable
Figure 6.3.3 An Example of Installation, Using GPA-014B for Antenna (B)
14
6 F 2 S 0 7 3 8
6.4 Installing Surge Arrester
The GPS antenna must be installed outdoors, so a surge arrestor is required as a measure against induced surges due to lightening. (This is not effective against a direct lightening strike.)
The arrestor should be installed at the point where the coaxial cable from the antenna enters the building. A recommended arrestor is CA-23RS made by Daiichi Denpa Kogyo. The specifications for and the appearance diagram of the arrestor are described in Appendix C. The surge arrestor is not water-proof and should be installed in a box. Connect the coaxial cable to the arrestor by an N-type connector.
Stitch or solder a copper earth wire, 2.5 to 3.2 mm in diameter, to the earthing terminal on the arrestor. Connect the other end of the wire to the arrestor’s own earthing point. Make the connection distance between the arrester and the earthing point as short as possible and protect the earth cable with an insulation pipe.
The surge arrestor must have its own direct connection to earth and must not share an earth connection with other equipment. Failure to comply with this requirement will result in risk of electric shock at time of lightening strike.
6.5 Installing Fibre Optics
For the fibre optic connection, multi-mode GI fibre (62.5/125
µm) is used. When laying fibre optic lines, ensure a minimum curvature radius of 50 mm.
CAUTION
Do not bend the fibre optic cable sharply, as this may damage it and may cause malfunctions.
Ensure that fibre optic connectors are fixed securely.
15
6 F 2 S 0 7 3 8
6.6 Connecting the Power Supply and the Earthing Terminal
Connect the 48Vdc power cable and the earth cable to the terminal block with M4 crimped terminals. For safety purposes, make sure that the earth connection is reliable.
CAUTION
The earthing terminal must be securely earthed. The failure to ground may cause malfunctions, electric shocks or injury.
Fibre optic cable to relay
P
N
48V
E
Adapter
Earth
Antenna
Co - axial cable
Arrester
Co - axial cable
Earth
(Earth the arrester only.)
Figure 6.6.1 External Connection of GPS Receiver Unit
Adapter
16
6 F 2 S 0 7 3 8
7. Preparation for Installation
The following issues should be considered prior to commencing installation of the system.
7.1 Selecting an Antenna and Cables
The choice of antenna and cable types should be made based on the distance from the antenna installation site to the GPS receiver unit installation site, and also on the cabling conditions.
Coaxial cables of characteristic impedance 50 ohms are required. The signal frequency is
1.57GHz.
The antennas may be selected according to the distance between the sites. In the case of areas where snow is prevalent, the use of pole-shaped antennas is advisable.
The maximum extension lengths of cables based on the combinations of antennas and cables are shown in Table 7.1.1. It shows the lengths from the antenna to the GPS receiver unit.
GPA-017S antenna
GPA-014B antenna
Table 7.1.1 Maximum Extension Lengths of Cables Based on Combinations of
Antennas and Cables
RG213
Coaxial Cable Type
Fujikura 5D-FB Belden 9913 Westflex 103 Fujikura 8D-FB
16m 25m 35m 35m 35m
33m 50m 75m 75m 75m
7.2 Selecting Coaxial Cables and Conversion Adapters
N-type (NP) connectors are installed on both ends of the coaxial cables. Conversion adapters are required, since different types of connector are fitted on the antenna, surge arrestor and GPS receiver.
Required conversion adapters are as shown in Table 7.2.1.
Part
Connector conversion from coaxial cable to antenna
Connector conversion from the coaxial cable to the GPS receiver unit
Table 7.2.1 List of Conversion Adapters
Required conversion adapter
NJ-BNCP adapter or NJ-TNCP conversion cable (within 1 m)
NJ-BNCP adapter
Remark
The 5D-FB and RG213 cables can be fitted with a BNC-P connector, in which case, no conversion adapter is needed for connection to the BNC-fitted antenna and
GPS receiver unit.
17
6 F 2 S 0 7 3 8
7.3 Selecting an Antenna Installation Location
CAUTION
If antenna is not located in the method described below, it may not be possible to receive the
GPS signal correctly.
Obstructing object is not allowed in this area.
15°(maximum)
Antenna
Support pole
（ fix to fence etc.）
Roof of building
Neighbouring building
The antenna is installed outdoors to receive satellite transmissions. It should be installed in a location that offers an unobstructed view of the sky with an elevation angle of 15 degrees to horizontal. This is imperative for operation in high-reliability mode with operation of the
TRAIM function, since it is necessary to received signals from satellites which are widely spaced. These restrictions can be relaxed for normal mode operation.
Since the alignment of satellites varies during the course of a day, it is necessary to test that the installation is adequate to allow immediate location estimation and continuous 1PPS output for an entire one day period.
On sites where installation conditions are not ideal then it may be necessary to conduct a survey to establish whether reception quality is adequate. This may include situations where the antenna must be mounted on a wall, or if the visual field is narrow or if the site is close to structures which reflect electromagnetic waves.
18
8. Maintenance
6 F 2 S 0 7 3 8
Surge arrestors are degraded by lightening induced voltages, resulting in changes to their discharge breakdown voltage. They require periodic checks and should be replaced if necessary.
They can be checked by removing the internal components from the arrestor cabinet. The glass pipe part should be inspected and if it has turned black then replacement is required.
CAUTION
The surge arrestor must be periodically maintained to prevent malfunction.
8.2 Troubleshooting
In the event of failure or unexpected behaviour of the unit, the following items should be checked.
Symptom
"5V" LED is off.
"ERROR" LED is on.
"1PPS OUT" LED does not start to blink after power ON.
It takes a long time until
"1PPS OUT" LED starts blinking after power ON.
Possible cause and / or remedy
Check that power connections to the unit are made correctly and that the power supply switch on the front panel is ON. If so, then a failure of the internal power supply unit is a possible cause.
The GPS receiver unit is failed. The internal circuit clock has stopped oscillating.
Check the antenna location and connection.
Check that the DIP switches are set to proper positions.
In cases where the power has been turned off for 16 hours or more, internal back-up data may be lost and it may take about 30 minutes before the unit is ready to output the 1PPS signal. This case is not an error.
However, if 1PPS is not output after about 30 minutes, check that the antenna is installed in a satisfactory location.
Check to make sure that the antenna is installed in a satisfactory location. During operation, the 1PPS output is interrupted.
Data cannot be detected on the receiving device.
The 1PPS signal or the time data is irregular.
"1PPS OUT" LED does not turn on.
Check that the optical fibre is connected securely and that it is not damaged or severely bent
(minimum bend radius is 50mm).
Possible failure of the internal receiver.
Check that the DIP switches are set to proper positions.
If a failure continues, stop using the GPS receiver unit and contact the vendor.
19
6 F 2 S 0 7 3 8
20
Appendix A
Outline of GPS Receiver Unit
6 F 2 S 0 7 3 8
21
Outline
6 F 2 S 0 7 3 8
Panel cutout
4-
φ7 hole
45
15
266
260.0
4-R3.5
2.3
12.5
7.0
45.0
70.0
7.0
12.5
290.0
308.0
140.0
162.5
45 72
15
22
Appendix B
Technical Data
6 F 2 S 0 7 3 8
23
6 F 2 S 0 7 3 8
TECHNICAL DATA
Ratings
DC power supply: 48Vdc-10W
(Operative range: 38.4 to 57.6Vdc)
AC ripple on dc supply IEC 60255-11: maximum 12%
DC supply interruption IEC 60255-11: less than 10ms at 48Vdc
Permitted duration of dc supply voltage
interruption to maintain normal operation
Mechanical design
Weight: 2.7kg mounting
Receiving function
Number of receiving satellites:
Receive signals:
Receive frequency:
Eight satellites received in parallel
L1 C/A code
1575.42 MHz
Time transfer accuracy
Within±2µs with respect to UTC（When the receiver is tracking GPS Satellites）
Data backup
Data life:
Communication Interface
more than 16 hours
Cable type: GI multimode optical fibre (62.5/125
µm or
50/125
µm)
Wavelength: 820nm
Cable Length: 0 to 1km (3dB/km)
GPS antenna interface
Preamp power supply for Antenna Min 4.5V(at 20mA), Min 4.0V(at 40mA)
Cable type: 50 ohm coaxial cable
GPS antenna
NF:
Gain: 10 to 35dB(Antenna + Amp + Cable)
Max 3dB
24
6 F 2 S 0 7 3 8
Environmental Performance Claims for GPS Receiver
Test Standards Details
Atmospheric Environment
Temperature IEC60068-2-1/2
Operating range: -10
°C to +55°C.
Storage / Transit: -25
°C to +70°C.
Humidity IEC60068-2-3 56 days at 40
°C and 93% relative humidity.
Mechanical Environment
Vibration IEC60255-21-1 Response - Class 1
Endurance - Class 1
Shock and Bump IEC60255-21-2 Shock Response Class 1
Shock Withstand Class 1
Bump Class 1
High Voltage Environment
Dielectric Withstand
High Voltage Impulse
IEC60255-5
IEC60255-5
2kVrms for 1 minute between PSU terminals and earth.
Three positive and three negative impulses of 5kV(peak),
1.2/50
µs, 0.5J between all terminals and between PSU terminals and earth.
Electromagnetic Environment
High Frequency
Disturbance /
IEC60255-22-1 Class 3
Damped Oscillatory
Wave
IEC61000-4-12,
EN61000-4-12 Class 3
Electrostatic
Discharge
IEC60255-22-2 Class 4
Radiated RF
Electromagnetic
Disturbance
Fast Transient
Disturbance
Conducted RF
Electromagnetic
Disturbance
Conducted
Disturbance over
Freq. Range 15Hz to
150kHz
IEC60255-22-3 Class 3
IEC60255-22-4 Class 4
IEC60255-22-6 Class 3
IEC61000-4-16,
EN61000-4-16, Class 3
Power Frequency
Disturbance
IEC60255-22-7
1MHz 2.5kV applied to PSU terminals in common mode.
1MHz 1.0kV applied to PSU terminals in differential mode.
0.1MHz 2.5kV applied to PSU terminals in common mode.
0.1MHz 1.0kV applied to PSU terminals in differential mode.
8kV contact discharge.
15kV air discharge.
Field strength 10V/m for frequency sweeps of 80MHz to 1GHz and 1.7GHz to 2.2GHz. Additional spot tests at 80, 160, 450,
900 and 1890MHz.
4kV, 2.5kHz, 5/50ns applied to PSU terminals in common mode.
10Vrms applied over frequency range 150kHz to 100MHz.
Additional spot tests at 27 and 68MHz.
Varying voltages applied in common mode as follows:
15Hz to 150Hz: 10V
→ 1Vrms (20dB/decade)
150Hz to 1.5kHz: 1Vrms
1.5kHz to 15kHz: 1
→ 10Vrms (20dB/decade)
15kHz to 150kHz: 10Vrms
300V 50Hz for 10s applied to PSU terminals in common mode.
25
6 F 2 S 0 7 3 8
Surge Immunity
Conducted and
Radiated Emissions
IEC61000-4-5,
EN61000-4-5
EN55022 Class A
Power Frequency
Magnetic Field
IEC61000-4-8,
EN61000-4-8, Class 4
Pulsed Magnetic Field IEC61000-4-9,
EN61000-4-9, Class 5
Damped Oscillatory
Magnetic Field
IEC61000-4-10,
EN61000-4-10, Class 5
European Commission Directives
89/336/EEC
73/23/EEC
1.2/50
µs surge applied to PSU terminals in common/differential modes: 2kV/1kV (peak)
Conducted emissions:
0.15 to 0.50MHz: <79dB (peak) or <66dB (mean)
0.50 to 30MHz: <73dB (peak) or <60dB (mean)
Radiated emissions:
30 to 230MHz: <30dB
230 to 1000MHz: <37dB
Field applied at 50Hz with strengths of:
30A/m continuously,
300A/m for 1 second.
6.4/16
µs magnetic pulses (positive and negative) applied with magnitude 1000A/m.
Oscillation frequencies of 0.1MHz and 1MHz applied with magnitude 100A/m.
Compliance with the European Commission Electromagnetic
Compatibility Directive is demonstrated according to generic
EMC standards EN50081-2 and EN50082-2.
Compliance with the European Commission Low Voltage
Directive is demonstrated according to generic safety standards EN61010-1 and EN60950.
26
Appendix C
Specification of Recommended
Antenna and Arrester
6 F 2 S 0 7 3 8
27
6 F 2 S 0 7 3 8
Recommended Antenna
Manufacturer
Operating connector
Applicable connector
Gain
Preamplifier noise index
Supply voltage
Current consumption
Operating temperature
FURUNO Electric Co.,Ltd.
BNC-J
BNC-P
29 to 35dB
No more than 2.1dB
4 to 13V
25 to 30mA
- 30 to + 80℃
FURUNO Electric Co.,Ltd.
TNC-J
TNC-P
22 to 33dB
No more than 1.6dB
4.0 to 5.5V
No more than 25mA
- 25 to + 65℃
Storage temperature - 40 to + 85℃ - 35 to + 75℃
Weight Approx.
± 30g
φ42.2
φ69
24
52
290
85.5
200
GPA－014B
3D-XV
BNC-J
200
Outline of Antenna
GPA－017S
3D-2V
TNC-J
28
6 F 2 S 0 7 3 8
Recommended Arrester
Type CA-23RS
Manufacturer
Frequency range
VSWR
Loss
Withstand power
Discharge breakdown voltage
DAI-ICHI DENPA KOGYO CO., LTD.
DC – 2500MHz
No more than 1.1
No more than 0.2dB
200W PEP
DC 230V ±15%
Impulse wave discharge voltage 1,000V
Impulse wave current endurance 6,000A
Impulse wave repetitive discharge endurance (1×40)
µs, 500A, at least 500 times
Insulation resistance at 100Vdc
Connector
Dimensions
At least 10,000MΩ
N-J / N-J
78(W)×48(H)×20(D)mm
Weight 113g
N-J CONNECTOR
EARTH CABLE
φ2.5 – φ3.2
19
19
78
CA－23RS
Outline of Arrester
20
30
48
29
6 F 2 S 0 7 3 8
30
Appendix D
Supplement
6 F 2 S 0 7 3 8
31
6 F 2 S 0 7 3 8
1. Time Signal Transmission Format
The time signal format is shown below, consisting of 4,800bps serial data indicating the time, and 1PPS timing signal indicating the instant of time corresponding to the serial data.
1PPS timing signal
Serial data
4800bps
Signal for next second
Signal code format:
Output data:
ASCII codes based on NMEA-0183 data
GPtps data (time and 1PPS flag)
GPtst data (self-test result)
The GPS week number sent from the satellite returns to 0 (i.e., rollover) every 19.6 years; therefore, the GPS receiver unit cannot output the date data correctly. This is the rollover problem. To solve this problem, the GPS receiver unit provides a DIP switch.
- When the DIP switch 4 is set to OFF and the power is ON, the GPS receiver unit starts outputting the date and time from any date between April in 2001 and September in
2020.
- When the DIP switch 4 is set to ON and the power is ON, the GPS receiver unit starts outputting the date and time from any date between October in 2019 and March in 2039.
The default setting of the DIP switch 4 is OFF. After 2020, the DIP switch 4 should be set ON so that the GPS unit outputs the date data correctly.
Note 1: The date and time data from the GPS receiver unit are used for the recording data of
GRL100 relay and do not influence the function of GRL100 relay. The 1 PPS signal is output independently of the switch 4 setting.
Note 2: For one year from October, 2019 to September, 2020, any setting of the DIP switch 4 is allowed. So, in this term, the changing of the DIP switch 4 is recommended.
3 High-reliability Mode and TRAIM Function
TRAIM (Time Receiver Autonomous Integrity Monitoring) is a function which allows the unit to detect an error in the signal from a satellite. For operation of this function, it is necessary to receive one additional signal to the minimum number normally required for output of the 1PPS
32
6 F 2 S 0 7 3 8 pulse. If the necessary number of satellites are available then the unit carries out error detection and removal of erroneous signals. In the event of two or more satellites in error, the operation is not assured.
In high-reliability mode, the receiver will only output the 1PPS signal when no TRAIM alarm occurs. If any satellite is in error then it must be excluded, and so two or more satellites are required for the purpose of outputting 1PPS.
Satellite alignment is subject to strict limits for operation of the TRAIM function. The antenna must be located with a wide field of view.
4. Conditions for Receiving Electric Waves from Satellites
Signals from satellites at an elevation angle of less than 5 degrees are too weak to be received.
In terms of the impact of weather, satellite signals can be received correctly while it is raining or lightly snowing, or while a small amount of snow is piled on the antenna; however, during lightening or heavy snow, the receive status may deteriorate temporarily.
33
1.4
1.5
Version-up Records
Version
No.
0.0
1.0
1.1
1.2
May. 23, 2001 --
Jun. 22, 2001 3.2
5.1
6.6
7.1
Appendices
Jul. 19, 2001
Jul. 25, 2001
--
4.1
Appendix D
6.3
1.3 Sep. 10, 2001 3.1
3.2
4
5.1
6.6
8.2
Appendices
Jul. 30, 2002 Appendix B
Mar. 28, 2003 6.3
7.1
Appendix C
6.3
7.3
6 F 2 S 0 7 3 8
Contents
First issue.
Modified Figure 3.2.1.
Modified Figure 5.1.1
Modified Figure 6.6.1.
Modified descriptions in Section 7.1.
Modified Appendices B, C, I and K.
Corrected Type of GPS unit. (HHGP3
→HHGP1)
Modified descriptions in Section 4.1.
Modified descriptions 0f “2. Date rollover” in Appendix D.
Corrected Type of GPS antenna.
(GPA-01T
→GPA-016, GPA-14B→GPA-016B)
Modified Figure 3.1.1.
Modified Figure 3.2.1.
Modified descriptions in Chapter 4 and Section 4.1.
Modified descriptions in Section 5.1.
Modified Figure 6.6.1.
Modified descriptions in Section 8.2.
Modified Appendices A, B, C and D.
Modified the description in Conducted and Radiated Emissions.
Changed Type of GPS antenna and Figure 6.3.1. (GPA-016
→GPA-017S)
Added Figure 6.3.3.
Modified Table 7.1.1.
Changed specification and outline of antenna. (GPA-016
→GPA-017S)
Added the description in Note of Table 4.1.
Added the description in Caution.
Added Caution.
34
