GlobalTime Electronic GTD368 Series User manual

GlobalTime Electronic Co., Ltd
GTD368 Series Digital IP Clocks (PoE Version)
Installation and User Manual

Table of Contents
1. Safety Instructions......................................................................................................................................1
2. Power Supply...............................................................................................................................................1
3. An Explanation of the Red Button on the Back........................................................................................1
3.1. How to Use Static IP...............................................................................................................................1
3.2. Hour Format Setting...............................................................................................................................2
3.3. How to Reset..........................................................................................................................................2
4. Operation Status.........................................................................................................................................2
4.1. Self- check..............................................................................................................................................2
4.2. Assigning an IP Address.........................................................................................................................2
4.3. Time Display...........................................................................................................................................2
5. Management Software “ClockSniffer”......................................................................................................2
5.1. IP Search................................................................................................................................................3
5.2. Basic Information and Settings...............................................................................................................4
5.2.1. Password......................................................................................................................................4
5.2.2. Basic Settings...............................................................................................................................4
5.2.3. Optional Settings..........................................................................................................................4
6. Installation Instructions.............................................................................................................................6
6.1. Wall Mounting for Single- sided Clocks..................................................................................................6
6.2. Ceiling Mounting for Double- sided Clocks.............................................................................................6
6.3. Wall Mounting for Double- sided Clocks.................................................................................................6
7. Troubleshooting..........................................................................................................................................7
7.1. The Display Screen Shows Wrong Time.................................................................................................7
7.2. Some LED Segments are Dark...............................................................................................................7
7.3. The Management Software Fails to Search out the Clock.......................................................................7
7.4. The Clock Fails to Synchronize with Any Public Time Server..................................................................7
7.5. The Small Light at the Bottom Right Corner is on All the Time................................................................7
8. Warranty and Maintenance..........................................................................................................................7
8.1. Warranty..................................................................................................................................................7
8.2. Repair and Returns.................................................................................................................................8

Synchronized Time Systems
GlobalTime Electronic Co., Ltd
Floor 7, Building 4, No. 651, Wanfang Road,Minhang District, Shanghai, China / 201112
Tel: [phone] Fax: [phone]
Email: [e-mail] Website: www.ntpclock.com
1
1. Safety Instructions
To prevent injury, damage to the unit, or other harm, read this manual in its entirety before installing or
operating the clock.
Observe normal safety precautions and use appropriate safety equipment (safety glasses, gloves,
ladders, etc.) when installing this product.
Never install wiring during a lightning storm.
Never install data jacks or electrical wiring in wet locations unless the equipment is specifically designed
for that purpose.
Be sure that mounting hardware is suitable for the mounting surface and sufficient to support the weight
of the clock.
Observe all local codes when installing the product.
This product is not a toy! Please keep it out of the reach of children.
Operation of this product in a manner inconsistent with the instructions in this manual may result in
personal injury and damage to the product and will void the warranty.
Do not use harsh cleaners or aerosol cleaners. Use a damp cloth for cleaning.
Do not place this product on an unstable cart, stand, or table. The product may fall, causing injury or
damage.
2. Power Supply
(1) If the local network supports PoE, then only one network cable is needed.
(2) If not, then an additional power adapter with a 5.5mm x 2.1mm connector is necessary.
3. An Explanation of the Red Button on the Back
Using Static IP
Hour Format Setting
Reset
We can long-press the red button to access the menu and then click it to select the option. When we click, the
display screen will show SIP, 12, 24, RES in turn.
3.1. How to Use Static IP
The default IP of the clock is 192.168.2.55. Only after we click the button to select SIP first, then we can see
the clock on the management software when the PC and the clock are in the same network.

Synchronized Time Systems
GlobalTime Electronic Co., Ltd
Floor 7, Building 4, No. 651, Wanfang Road,Minhang District, Shanghai, China / 201112
Tel: [phone] Fax: [phone]
Email: [e-mail] Website: www.ntpclock.com
2
3.2. Hour Format Setting
We can click the button to select hour format. For 12 hour format, there will be a dot on the left upper corner to
show that it is PM, if no dot, it is AM.
3.3. How to Reset
We can click the button to select RES. When the display screen shows RES, we should stop clicking, then the
clock will restart. In this way, the clock is reset to factory default settings.
4. Operation Status
Once powered up, the clock will go through:
Self- check
IP Address
Time Display
4.1. Self-check
Self- check status aims to inspect whether all LED segments are in a good condition. This status lasts 10
seconds, from displaying 99:99, 88:88...to 00:00.
4.2. Assigning an IP Address
There are two options for configuring an IP address to each GlobalTime clock:
DHCP (Factory Default Settings)
Assigned Static IP v4 Address
By default, when powered up, the clock shows “dHCP” first and then the IP address. If no DHCP server
available, then please refer to above 3.1 to use a static IP.
4.3. Time Display
At first, the time is displayed as 00:00+ time zone. If it is not synchronizing with the external time source, it will
keep running based on this time zone. Once the clock can synchronize with the network time sever, it will
display the correct time.
5. Management Software “ClockSniffer”
Download Link:
For 64-bit windows computer :
https://drive.google.com/file/d/168vkhi23dQMvaRjxhVmGFeOpWzutgI5w/view
For 32-bit windows computer:
https://drive.google.com/file/d/1_rGsEmQM4RIwWY4L_pbP_mkSbkThj7lR/view

Synchronized Time Systems
GlobalTime Electronic Co., Ltd
Floor 7, Building 4, No. 651, Wanfang Road,Minhang District, Shanghai, China / 201112
Tel: [phone] Fax: [phone]
Email: [e-mail] Website: www.ntpclock.com
3
Note:
(1) Run the software as administrator
(2) The default login password is Admin@GTC. It can be reset via the software.
(3) After setting, please just click “Modify”, no need to enter the secret key if you have not set one.
(4) By default, the clock is configured to use DHCP. If we want to use static IP for the first time, we must
long-press the red button on the back side to select SIP. The default IP is 192.168.2.55. Whatever we use, we
must ensure that our PC and the clock are in the same network, then we can see the clock on the software.
5.1. IP Search
The management software supports both Broadcast (255.255.255.255) and Unicast way to search out online
client clocks. Broadcast is factory default.
Broadcast
Select “Broadcast”, and click “Search”, the software will automatically search online clocks in the subnet, and
group IPs based on different subnets.
Unicast
Select “Unicast”, and input initial IP you want in the bar, then click “Search”, the software will search from the
initial IP to the last one. For example, to search all clocks in subnet 192.168.3.0, you can input 192.168.3.001,
and then search one by one till 192.168.3.254.

Synchronized Time Systems
GlobalTime Electronic Co., Ltd
Floor 7, Building 4, No. 651, Wanfang Road,Minhang District, Shanghai, China / 201112
Tel: [phone] Fax: [phone]
Email: [e-mail] Website: www.ntpclock.com
4
5.2. Basic Information and Settings
5.2.1 Password
On the old software “NTPClock”, the default user password is admin. Default global password is globalpw.
Global password is for batch modification. Batch modification is under improvement currently, so please set
the clocks one by one as possible. On the new software “ClockSniffer”, no password is needed if the user has
not set one.
5.2.2 Basic Settings
Time Format and Time Zone
Clock IP
Daylight Saving Time
Brightness
NTP Server
Countdown
5.2.3 Optional Settings
Bell Setting
We can add a bell relay to the clock, then the clock can be connected to a bell. The voltage and current of the
bell should be ≦5A 30VDC, or ≦5A 250VAC.
Connection Bell Connector
Humiture & Temperature Setting
We can add a sensor to the cock then it can display time, temperature, humidity alternately:
Time Temperature Humidity

Synchronized Time Systems
GlobalTime Electronic Co., Ltd
Floor 7, Building 4, No. 651, Wanfang Road,Minhang District, Shanghai, China / 201112
Tel: [phone] Fax: [phone]
Email: [e-mail] Website: www.ntpclock.com
5
Bell Setting by Software
Humiture and Temperature Setting by Software

Synchronized Time Systems
GlobalTime Electronic Co., Ltd
Floor 7, Building 4, No. 651, Wanfang Road,Minhang District, Shanghai, China / 201112
Tel: [phone] Fax: [phone]
Email: [e-mail] Website: www.ntpclock.com
6
6. Installation Instructions
6.1. Wall Mounting for Single- sided Clocks
For single-sided clocks, there are two holes on the back for hanging them on the wall, so only screws are
needed. Wall mounting kit and ceiling mounting kit are optional, not necessary for single-sided clocks. The
installation method of using a walling mounting kit or a ceiling mounting kit for single-sided and double-sided
clocks are same.
6.2. Ceiling Mounting for Double- sided Clocks
Step 1 Knock off the round cover Step 2 Fix the ceiling mounting kit
Step 3 Plug the cable Step 4 Install the rear screen and fix the ceiling mounting kit
6.3. Wall Mounting for Double-sided Clocks
Step 1 Knock off the round cover Step 2 Fix the wall mounting kit

Synchronized Time Systems
GlobalTime Electronic Co., Ltd
Floor 7, Building 4, No. 651, Wanfang Road,Minhang District, Shanghai, China / 201112
Tel: [phone] Fax: [phone]
Email: [e-mail] Website: www.ntpclock.com
7
Step 3 Plug the cable Step 4 Install the rear screen and fix the wall mounting kit
7. Troubleshooting
7.1. The Display Screen Shows Wrong Time.
Check the host IP configuration and verify that the network can communicate with the time server preset.
7.2. Some LED Segments are Dark.
Reboot the clock to check if there are dark segments under self-check process. If yes, the display screen
needs to be replaced.
7.3. The Management Software Fails to Search out the Clock.
Make sure that the user’s computer and the clock are in the same sub network and the firewall is set correctly.
7.4. The Clock Fails to Synchronize with Any Public Time Server.
The user should make sure that his network can visit the internet time source, and the time server is running
its NTP service successfully.
7.5. The Small light at the Bottom Right Corner is on All the Time.
This condition indicates that the clock can not synchronize with the time server preset. Please check the
network configuration and the operation status of the time server.
8. Warranty and Maintenance
8.1. Warranty
GlobalTime warrants the clocks to be free from defects in material and workmanship during a one-year period.
The Warranty begins on the date the unit is shipped from GlobalTime. Extended warranties are available via

Synchronized Time Systems
GlobalTime Electronic Co., Ltd
Floor 7, Building 4, No. 651, Wanfang Road,Minhang District, Shanghai, China / 201112
Tel: [phone] Fax: [phone]
Email: [e-mail] Website: www.ntpclock.com
8
certain agreements.
GlobalTime’ liability under this Warranty is limited to repairing or replacing, at GlobalTime’ option, the
defective equipment and providing upgrade version changes for firmware. In case of repair, the product must
be returned to an authorized GlobalTime Service Center.
This Warranty does not apply if repairs are required due to acts of nature beyond GlobalTime’ control such as,
but not limited to, lightning strikes, power surges, misuse, damage, neglect, or if repairs/ modifications have
been made or attempted by anyone other than personnel authorized by GlobalTime.
In no event will GlobalTime be liable for any indirect, special, incidental, or consequential damages
from the sale or use of this product. This disclaimer applies both during and after the term of the
warranty. GlobalTime disclaims liability for any implied warranties, including implied warranties of
merchantability and fitness for a specific purpose.
8.2. Repair and Returns
To obtain service under this warranty, contact GlobalTime at [phone] or at the address below during
the warranty period to receive a Return Material Authorization (RMA) number and shipping instructions. Then
ship the product, transportation prepaid, for inspection.
Ship to: GlobalTime
Attn: RMA XXXXXX
Floor 7, Building 4, No. 651, Wanfang Road, Minhang District, Shanghai, China / 201112
Tel: [phone]
Typical equipment repair or replacement time is 10 business days, plus shipping times. One-way shipping is
the Customer's responsibility. GlobalTime will return ship the equipment by the same means it was received.
GlobalTime will not be responsible for dismounting and remounting of the GlobalTime clock, for unauthorized
returns or for returns that do not list the RMA number and quantity returned on a packing list attached in plain
view on the outside of the shipping container.
We reserve the right to make changes at any time.