FLOW 4K Interface and Indicator

Power on and Start up

For FLOW 4K series, you can choose two power supply modes: DC input/POE

i:DC-12V Input

Power on with the SCIENCE IMAGE original standard 12V power supply

Always use genuine SCIENCE IMAGE power adapters, 3rd party products perhaps can cause permanent damage.

ii:POE Power supplier

Power up through the network cable connecting the POE (power over Ethernet) with Gigabit network switch

PoE Power over Ethernet(802.11af/at) support
Always use a certified 802.11 af/at with minimum 10W port power capacity and it’s a gigabit network switch.

note:After startup, you will find that the character SCIENCE IMAGE Tech begins to appear on the OLED screen, and the power light on the right starts to light up.
At this time, the device is powered up successfully.

note:If you cannot access the Web UI, please set the IP address of your PC to the SAME ethernet subnet according to the IP address displayed by the OLED.

OLED Display

After the device is started, the current status and parameters will be displayed alternately on lines 1, 3 and 4 of the screen

The first line — 4K Converter/ Optical Transmit
Display the name of the current device and the status of the Optical Receiver (the Optical transmitter by default, and the Optical Receiver by default).

The second line — PrimaryIN: SDI
Displays which input, SDI or HDMI, is recognized by the current device.

Line 3 — IN: 1080I50 / CH: SDI-Y HDMI-N
Displays the video format of the current input source of the device (when the device serves as an optical receiver, the video format of the optical input is displayed) and whether the SDI and HDMI inputs are detected (Y indicates that there is an input and N indicates that there is no input).

Line 4 — OUT: 2160p60/192.168.—.—
Displays the output video format (the format selected in the video Format conversion list) and the current IP address of the device.

note:It takes about 30 seconds for the system to work properly. It takes a while for the Linux system to start.

Log In

Log in to the WebUI using a network cable, power on the device using the original power adapter, and connect the device to the PC using a network cable. Or connect the device and computer to the same router or switch.

note:If is displayed, the device cannot automatically obtain an IP address. You need to manually set the IP address of the PC to the same network segment, that is, 192.168.8.*, to log in to the WebUI.

Open the IE browser, enter the IP address on the OLED screen and enter the Web UI home page Default user name: admin Password: admin

Log in to the WebUI using the USB RNDIS function, power on the device using the original power adapter, and connect the device to the PC using a USB cable.

note:You may need to install the RNDIS driver when you log in to the WebUI for the first time. If the driver has been installed, enter the management address 192.168.88 to log in to the WebUI.

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i:Right-click My computer – Manage – Device Manager on the desktop. An unknown device RNDIS appears in device Manager. 

ii:Right-click RNDIS and select Update Driver — browse my computer to find a new driver — let me select from the list of drivers available on my computer — Network Adapters — Microsoft — Remote NDIS compatible devices.

note:If you fail to log in, you can change the IP address of the new NDIS network adapter to 192.168.88.* in the network connection. The IP address is in the same network segment as that of the device, but the IP address of the device in the LAN cannot be the same.

Device Information

This page is the FLOW 4K device information page, which contains the following information:

There are 4 pages in total: Devices, Networks, Systems and Controls. The device displays basic information, such as the input video source format, device name, and firmware version. You can monitor the operating status and status of the device in real time.

i:Device running time (after startup), currently input HDMI or SDI source video resolution and audio, real-time main chip temperature, and detailed device parameter information.

ii:The device information includes:
Device name (can display the current codec mode of the device), device serial number, hardware version, firmware version (can be upgraded on the system page with the version update), MAC address (unique and unmodifiable), device IP address (can be Modify at any time on the web page), local IP address (the IP address of the local PC or mobile phone), and disk space (usage of hardware flash disk space).

Network Setting

IP address setting
i:DHCP mode

Automatic mode (DHCP) needs to be used in the link connecting to the router. The router dynamically assigns the IP address tothe device in real time. An IP address will be randomly assigned to the device every time the power is turned on.You can log in to the webpage according to the IP address assigned by the router and modify the corresponding information (if there is no IP address assigned by the router in the link, the default IP of the device is When the pattern is selectedThere is no need to fill in the IP address information on the page, just click the “Apply” button below, and then the device willautomatically restart and get the IP address assigned by the router in the link (this process is long)(30 seconds), to be displayed on the screen of the device after the newIP address in the browser input IP login can be.

ii:Manual mode

If this mode is selected, the user needs to set the IP address information of the device to be in the same network segment as the IP address information of the local PC or mobile phone.For example: View the local computer’s Ethernet IPv4 information as “IP address: Subnet mask: Default gateway:”, then you can set the device IP address as: “IP address: gateway : Subnet mask: “The gateway and subnet mask are the same as the local computer or mobilephone, and the IP address does not conflict with other addresses in this network segment.


1. Video format conversion

No matter what the input format is, you can convert the output to the corresponding format by clicking the following format. Such conversion will not change the image quality. After selecting the format, it will be green. If no transformation is required,select auto, which is the same as the input source format.

2. Input source priority selection

When both SDI and HDMI sources are input at the same time, the HDMI source is preferred by default. If you want to select the preferred SDI source, click SDI application. When there is only one source, it will be automatically recognized and will not be affected by this setting.

3. Optical transceiver settings

Optical transceiver setting is to regard the device as an optical transceiver and use optical fibers for data transmission. It is necessary to send one transmission and receive one transmission to two devices, and both devices are in coding mode. First, select a device as the sender, log in to the web user interface (WebUI), locate the optical device on the coding page, and enable the select sending mode. Video format conversion and input source preference can be used to select frequency conversion and signal source respectively for optical signal transmission. Then, select another device as the receiver, log in to the WebUI of the receiver, enable the optical device Settings, and select the receiving mode. SDI OUT and HDMI OUT output optical signals. The same optical output can also be converted to video format, but it should be noted that the format frequency selected with the sender must be the same integer or decimal.

4. External audio embedding settings

LINE IN is a mix of embedded audio and NDI’s original audio. The volume of the main audio is used to adjust the volume of the original audio IN the NDI, and the volume of the embedded audio is used to adjust the volume of the embedded audio. This setting is applied to the Headset jack and THE NDI. By default, the volume of the LINE IN audio is 0, and no embedded audio is output.

System settings

1. Reset login password

To change the login password, click Apply. The new password takes effect upon the next login.

2. Restore factory settings

You can restore the device to the initial state but not the firmware version (the default IP address of the device is DHCP mode). If there is no router in the LAN that automatically assigns IP addresses, the IP address of the device will be changed to

3. Firmware Upgrade

For firmware upgrade instructions, please refer to the user manual of FLOW 4K released by SCIENCE IMAGE. please download this manual on the official website at

4. Device restart

Clicking this button will restart the controlled device on the Web interface.

Hardware restore factory settings!!

Press and hold the reset key (in the pinhole of the front panel) and power on the device at the same time. At this time, you can see that the OLED displays “system recover”. Release the reset key to start the process of restoring the factory setting. When Tally is green, the factory setting is restored. It takes 20 minutes, please wait patiently.


Q. Why can't the device start?

A. Check whether the device power indicator (located on the right side of the chassis) and OLED screen are on, and restart again with the official power adapter; Do not turn off the upgrade page and power during device upgrade!!

Q. Why not log in to the Web UI?

A: Check whether the IP address of the device is on the same network segment as that of the computer, and whether the IP address of the device conflicts with that of other devices in the network segment. Check whether the network environment is good. Try to power off and restart the device. If you log in using RNDIS, power on the DC and then connect the USB. Install the driver for the first time. The login IP address is

Q. Why does the device IP address display

A. This is because the device is in the automatic IP acquisition mode in the network settings of the webui, but there is no router in the LAN connected to the device to assign an IP address to the device. At this time, change the computer IP to 192.168.8. * *, then log in to the Web UI, change the device to manually obtain the IP, fill in the address, subnet mask and gateway, and click [apply].

Q. Why is the image output from the device to the display device abnormal in color, sound or picture?

A. Try to restart the device in the Web UI system, or manually power off and restart.

Q. Why is the device output to the white screen of the display device in decoding mode?

A. Optical transceiver supports transmission between SCIENCEIMGE devices only, and the optical transceiver must be officially designated. Check whether the optical transceiver of the two devices is enabled, and whether one end sends data and the other end receives data. It should also be noted that the frame rates of both video formats should be integers or decimals (1080p60 on one end and 1080p59.94 on the other end will not work).



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