Citizen TSV-400GP User manual

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You can download the English version of this instruction manual from the URL below.
http://tic.citizen.co.jp/timeserver/

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Introduction
Thank you for purchasing the TSV-400GP GPS Time Server.
This time server uses a GPS antenna to receive high-precision time information.
Devices such as computers or servers that are connected to the network and use the
standard time synchronization protocol of NTP or SNTP to communicate with this
product can obtain the accurate time.
Also, information about the operating status of the time server can be obtained using
a web browser or SNMP.
At the same time as operating as a time server, the TSV-400GP can be used to
periodically synchronize the time of various devices by turning on the regular time
semiconductor relay output circuit.
The TSV-400GP supports IEEE802.3af compliant PoE (Power over Ethernet) power
supply, and can therefore receive power and operate from an Ethernet cable.
Check the Accessories
GPS Antenna (with 5m cable)
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1
Signal converter (time server)
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1
AC adapter
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1
Instruction Manual (this manual)
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1
Network cables are not provided with this product. Please purchase separately.
Unauthorized reproduction of this manual in whole or in part is strictly prohibited.
The content of this manual may be changed at any time without prior notice.
Illustrations and screen shots may differ from the actual product.

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Contents
Introduction........................................................................................................................... 2
Check the Accessories ......................................................................................................... 2
Contents................................................................................................................................. 3
Safety Precautions................................................................................................................ 4
Names of Parts...................................................................................................................... 6
Connections........................................................................................................................... 7
Installation............................................................................................................................. 9
Operating Specifications.................................................................................................... 13
Time Server Function......................................................................................................... 14
Initial Settings..................................................................................................................... 15
Connecting with a Web Browser...................................................................................... 16
System Information ........................................................................................................... 17
Authentication..................................................................................................................... 19
Network Configuration....................................................................................................... 21
SNMP Configuration ........................................................................................................... 23
User Configuration ............................................................................................................. 28
Troubleshooting .................................................................................................................. 29
Product Specifications........................................................................................................ 30
Warranty and Post-Purchase Service .............................................................................. 31
Inquiries ............................................................................................................................... 32
Warranty...................................................................................................................................... 33

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Safety Precautions
○Explanation of Symbols
In order to ensure the safe and correct use of this product, please be sure that you
have read and fully understand the safety precautions and instructions for this
product before use.
Warning
This symbol indicates warnings which may result in death or serious
injury to the user if ignored or if the product is handled incorrectly.
Caution
This symbol indicates warnings which may result in injury to the user
or damage to property if ignored or if the product is handled
incorrectly.
Prohibited
This symbol indicates prohibited acts. Details of the prohibited act are
shown next to the symbol.
Compulsory
This symbol indicates instructions which must be followed by the user.
Details of the instructions are shown next to the symbol.
Device Installation
Caution
○When operating this product as a time server, make sure that the
network administrator handles the system. Managing the IP addresses
inappropriately may prevent devices connected to the network from
operating, or cause them to fail.
○Do not attempt to disassemble, modify or repair this device as doing so
may result in electric shock, failure or malfunction.
○Do not install the device in locations that have high temperatures or
humidity. Doing so may cause parts such as connectors to corrode
easily.
○Install the device securely, and avoid installation in locations where it
may be subject to vibrations or impact. Doing so may result in the
product dropping or becoming damaged.
○Do not lay cables where people walk. People may trip over the cables
by accident.
○Do not install in a flammable atmosphere (near gasoline, flammable
sprays, thinners, lacquers or dusty locations) or in a corrosive
atmosphere that contains substances such as acid.

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Doing so may result in fire, short circuit or failure.
○Be sure to remove the AC adapter from the socket before installing,
removing and cleaning this device. Failure to do so may result in
electric shock.
○If the device malfunctions due to lightening, etc., immediately remove
the AC adapter from the socket. Doing so may result in fire or short
circuit.
AC Adapter
Warning
○Do not attempt to disassemble, modify or repair this device as doing
so may result in electric shock.
○Do not handle this device with wet hands. (Also, do not handle this
device in humid, damp and dusty locations.)
○Do not pull the cable to remove the AC adapter from the socket.
Connections
Compulsory
○Always disconnect the power supply before starting wiring work.
Failure to do so may result in electric shock or malfunction.
○Always use the specified AC adapter (provided).
Using a different adapter may result in malfunction.
○Always insert the AC adapter into a 100V - 240V AC (50/60Hz)
power supply socket (commercial power supply). Inserting the
adapter into a power supply socket that has a different voltage
may cause fire.
○Do not apply overvoltage or overcurrent to the semiconductor
relay output terminal. Doing so may result in malfunction or fire.
(See P.8)
Product Usage
Warning
Do not use with medical device related systems that directly affect human
life.
Product Disassembly
Prohibited
Do not attempt to disassemble or modify this product. Do not solder this
product. Doing so may result in an accident such as fire, injury or
electric shock, or a malfunction.
Caution

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Names of Parts
GPS antenna
AC adapter
Signal converter (time
server)
Installation bracket
Semiconductor relay output terminal 2-b
PoE compatible network interface
connector (RJ45)
Reception monitor
Cable support
AC adapter
connection jack
Antenna connection terminal V+
Initialization
button R
Antenna cable shield connection
terminal SG
Antenna connection terminal RX-
Semiconductor relay output terminal 2-a
Semiconductor relay output terminal 1-b
Semiconductor relay output terminal 1-a
Antenna connection terminal GND
Antenna connection terminal RX+

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Connections
○System Diagram
○Connection Diagram
* If there are concerns about the effects of noise when extending the cable, etc., connect the
shielding wire to the SG terminal.
MONITOR
[Outdoor Installation]
[Indoor Installation]
GPS antenna
AC adapter
AC100V-240V (50/60Hz)
Signal converter (time server)
Network
Customer
Devices
S-MVVS 0.3mm2-4C（5m）
When extending cables,
have the work done by a
professional electrician
(Up to max. 600m)
GPS antenna
Signal converter (time server)
Red
Black
White
Green
Shield
Red
Black
White
Green
Red
Black
Red
Black
Network
(PoE)
(Semiconductor relay
output 2)
Customer Devices
Input terminal
(Semiconductor relay
output 1)
Customer Devices
Input terminal
AC adapter
input
V+
GND
RX+
RX-
2-b
2-a
1-b
1-a
DC15V
SG
RJ45
MONITOR
Using the AC Adapter
Using PoE Powered HUB
GPS
antenna
Signal converter (time
server)
Network
Customer
Devices
S-MVVS 0.3mm2-4C（5m）
When extending cables,
have the work done by a
professional electrician
(Up to max. 600m)
[Outdoor Installation]
[Indoor Installation]
PoE Powered HUB

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○Semiconductor relay output signal
The semiconductor relay output signal turns the output circuit on for 2 seconds every
hour on the hour after the GPS signal is received. (The circuit is an electronic switch
that uses the MOS FET relay.)
If the signal cannot be received, output is stopped after more than 24 hours has
passed from the last reception. Output resumes when the signal is received again.
Output rating
Applicable voltage: 24V DC or less
Maximum current: 200mA
Maximum output on resistance: 2Ω
Circuit Structure
No. of circuits
Dual system
Connectable cables
Single wire: φ0.4mm (AWG26) - φ1.2 (AWG16)
Stranded wire: φ0.3mm (AWG22) - φ1.25 (AWG16)
Strand diameter: φ0.18mm or over
Signal converter internal
circuit
Semiconductor relay output terminal

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Installation
[GPS Antenna Installation]
○Selecting the GPS antenna installation location
Install outdoors in a location that has an unobstructed line of sight to the sky.
When installing indoors, install near to a window that has an unobstructed line of sight
to the sky.
Caution
Do not install indoors in a location that does not have a line of sight
to the sky.
Doing so may cause unstable reception or the reception may be
affected by ambient noise, resulting in malfunction.
○Locations unsuitable for reception
- Locations that do not have a clear line of sight to the sky, irrespective of whether
they are inside or outside
- Locations that have an object that reflects or intercepts radio waves near the
installation location
- Near wired window glass, window glass with smoke film attached, metallic slide
shutters or window blinds
- Locations that have a radio transmitting antenna or lightening conductor nearby
- Locations that have high-voltage wires nearby
- Locations that may become submerged in bad weather conditions
- Locations where the antenna may become covered in snow in winter
- Other locations that may be sheltered from or may have obstructions to radio
waves from GPS satellites
○GPS Antenna Installation Orientation
Install the GPS antenna facing towards the zenith
(highest point in the sky)
(cables pointing downwards).
Installing with the case facing sideways or downwards
adversely affects the reception performance of the
antenna.

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○GPS Antenna Cable Wiring Precautions
Install so that the cables do not pass over the top of the
GPS antenna case. Doing so adversely affects the reception performance.
○GPS Antenna Fixing Method
○Extending the GPS Antenna Cable
Recommended
cable
S-MVVS 0.3mm2-4C Black (considering weather resistance)
Extension length
Up to 600m
When extending the cable, be sure to use the appropriate methods to waterproof
connections, such as by applying vinyl tape and self-adhesive tape.
[Wrapping around a
pole]
Pass bands through
the installation bracket
and wrap the bands
around the pole to fix
in place.
[Installing on a wall]
Fix the installation
bracket in place
with at least 2 screws.
Use screws that are
suitable for the
installation wall
material.

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[Signal converter (time server) installation]
Install the signal converter (time server) indoors. The back of this unit is fitted with a
non-slip material, and can be installed in flat locations without the need for fixing in
place. Be sure to fix in place if installing on a wall or unstable location.
○When fixing the signal converter
Fix the signal converter in place
using self-tapping screws.
Self-tapping screws are not
provided.
○Cable connections
Use a flat head screwdriver to press and
hold the cable release button
and insert the cable into the cable
connector.
After inserting the cable, release the cable
release button and check that the cable
cannot easily be pulled out.
○Cable support
Hook the cables and AC adapter onto the
cable support hook. This is to prevent
cables from coming out.
○Connecting shielding wires
In cases where cables are extended or there are concerns about the effects of noise
when cables are wired in parallel, connect shielding wire to the SG terminal.
Please prepare 3.5mm
self-tapping screws
Installation hole
Cable release button
Cable connector
Cable
Flat head screwdriver (tip width 2.6mm)
Cable
Cable support
SG terminal

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○Connecting to a Powered HUB
Warning
Install the powered HUB in a location where the power supply can
be cut immediately in an emergency.
Compulsory
Be sure to use the powered HUB within the permitted power
supply range. The electrical power consumption of this device is
2.2W. This product may not operate correctly if it is not supplied
with power due to the combination of devices connected to the
powered HUB.
Compulsory
Use a category 5e or higher 4 pair UTP/STP cable. Using other
types of cables may result in malfunction.
The maximum cable length is 100m.
[Turning on the Power Supply]
Connect the GPS antenna and signal converter, then connect the AC adapter when the
installation is complete to turn on the power.
When connected to PoE, connect the LAN cables and then turn on the power supply to
the PoE powered HUB.
Max. 100m
Powered HUB
(Power supply port)
Signal converter (time server)
RJ-45 jack
RJ-45 plug
LAN cable

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Operating Specifications
○When power is on
Operation
Reception monitor
Checking cable wiring after power is turned on
Lights orange
Confirmed cable connections are normal
(In some cases it may immediately flash green
when reception starts)
Lights green
Cable misconnection (approx. 30 seconds after
turning power on)
Lights red
Starts receiving GPS satellite transmission
Flashes green once per second
(one second lit, one second off)
Syncing with GPS satellite (during reception)
Flashes green once per second
(0.5 seconds lit, 0.5 seconds off)
Signal has been received
(Depending on the reception environment, it may
take 5 to 25 minutes after switching the power on
for the lamp to flash every 2 seconds.)
Flashes green every 2 seconds
(flashes on a 2-second cycle)
○ Normal times
Operation
Reception monitor
Reception complete (during sync with GPS satellite)
Flashes green every 2 seconds
(flashes on a 2-second cycle)
○Semiconductor relay output signal
The semiconductor relay output signal turns the
output circuit on for 2 seconds every hour on the
hour.
Output stops if there is no reception for more than 24 hours.
○Network interface
Time can be synchronized via NTP/SNTP when signals are being received successfully.
The operating status of the time server can be checked using a web browser on a
computer connected to the network.
Reception
monitor

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Time Server Function
The GPS antenna needs to have a stable reception to enable the time server to
operate.
○Relationship Between Reception Condition and Time Server Operation
GPS Reception Condition
Time Server Function
Power on - before reception is confirmed
No function
Successful reception (during GPS sync)
(Reception monitor flashes green every 2 seconds)
OK
24 hours passed since the last reception (Reception
monitor flashes red every 2 seconds)
No function
To check whether or not this device is operating as a time server, use a web browser
to check the System Information screen. (See P.17) The SNTP Server Status is
Running.
○Syncing Time with the Time Server
Connect the devices that you want to sync to this device using network cables. The
devices to be synced must support NTP (Network Time Protocol) or SNTP (Simple
Network Time Protocol). (Either version 3 or 4)
Set the time server (this device) IP address as the reference location for time syncing
on the device to be synced. The initial setting is 192.168.0.200. This enables periodic
time syncing. For details, see the instruction manuals of each of the connected
devices.
○NTP Year 2036 Problem
In NTP (Network Time Protocol), the number of seconds from the base point of
00:00:00 (UTC) on 1 January 1900 is calculated in 32-bit integers, and as a result
integer overflow will occur from 06:28:15 (UTC) on 6 February 2036 causing
erroneous calculations. This device will not malfunction after 2036 because it
references sign bits from internal processing, and therefore this problem will occur in
the NTP/SNTP client software and operating system processing, not on the time
server side. As some devices are not supported, it is necessary to check each device in
the usage environment.

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Initial Settings
The initial settings are shown below.
Changes to the IP address, subnet mask and default gateway are performed using the
Web browser. For details on how to change the settings, see the section in this manual
on connecting via a web browser.
IP address
192.168.0.200
Subnet mask
255.255.255.0
Default gateway
0.0.0.0
Webpage User Name
admin
Webpage Password
admin
You can check the operating status of the time server and configure the SNMP settings
using the web browser (such as Internet Explorer) of a computer connected to the
network. SNMP (Simple Network Management Protocol) is a protocol for monitoring
devices on a network, and is useful for discovering operation errors in the time server.
○Returning Settings to Default Values After Changing Settings
Remove all of the wires and then plug in the AC adapter of the signal converter to turn
the power on. Next, use a thin flat head screwdriver or pointed stick to press and hold
the initialization button for at least 5 seconds. Initialization is complete when the
reception monitor flashes quickly in orange. Release the initialization button.
Caution
When initializing the settings, be sure to first remove the AC
adapter to switch off the power before disconnecting all connected
cables to the device. Initializing with cables connected may result
in malfunction or damage.
Initialization button
Reception monitor

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Connecting with a Web Browser
Use a web browser on a computer connected to the network, and enter the IP address
that is set for the time server (signal converter) as the URL. The initial setting is
192.168.0.200.
For the initial settings,
http://192.168.0.200
enter.
The System Information screen is displayed.
If an error or other problem occurs and the screen does not open, check the
relationship between the IP address of the time server and the IP address
of the computer. Connection is not possible unless the network is within the same
segment.

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System Information
You can check the system information by clicking Overview in the top left menu.

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SNTP Server
Status
Operating status Running: Operating, Down: Stopped
Log
Operation log
Leap Indicator
Leap second indicator (stopped or not displayed)
Stratum
Stratum level (stopped or not displayed)
Reference Identifier
Source of time synchronization (stopped or not displayed)
Reference Timestamp
Time of time synchronization (stopped or not displayed)
System Status
GPS Antenna
Status
Antenna operating status
Power-on: Immediately after power is turned on
No communication: Communication failure with GPS antenna
State Unusual: Malfunction of GPS antenna
Start: Communication with GPS antenna is successful,
starting to receive signal
Wait1: Acquiring GPS satellite signal
Wait2: Acquiring GPS satellite signal (final stage)
Safe: Signal has been received
One-day progress: 24 hours have elapsed since a signal was
last received
Alarm: 4 hours or more have elapsed since a signal was
last received
Recovery: Initialization processing is in progress
The displayed information is correct as of the time the screen was opened. To display
the latest information, press the Refresh button in your web browser to refresh the
screen.

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Authentication
You can open the Authentication page by clicking Authentication in the top left menu.
Advance authentication is required for changing the settings.
Click Access Restricted Page.
Enter the user name and password, and click OK.
Initial Settings
User Name ：admin
Password ：admin
are: These can be changed in the User Configuration screen. (See P.28)