kramer EXT3-U-R USB 2.0 Extender Kit over Extended Reach
Product Information
Specifications:
- Model: EXT3-U-R
- Power: 12V DC
- USB Ports: 4x USB 2 Type A
- Audio Out: 3.5mm Mini Jack
- Link In: RJ-45 Connector
- RS-232: Rx, Tx (with common G pin)
Product Usage Instructions
Step 1: Check what’s in the box
The package includes the following items:
- EXT3-U-R USB Receiver
- 1 Bracket set
- 4 Rubber feet
- 1 Quick start guide
Step 2: Get to know your EXT3-U-R
The EXT3-U-R has the following features and functions:
| # | Feature | Function |
|---|---|---|
| 1 | LINK LED | Flashes blue when a link is established. |
| 2 | AUDIO OUT 3.5mm Mini Jack | Connect to an unbalanced stereo audio acceptor. |
| 3 | USB 2 Type A Ports (1 to 4) | Connect to USB devices. Connect the receiver directly to the power adapter in order to charge USB devices. |
| 4 | ON LED | Lights green when locally powered by the power adapter. Lights orange when powered by PoC. |
| 5 | LINK IN RJ-45 Connector | Connect to the LINK OUT port on the EXT3-U-T. |
| 6 | PROG (Tx, Rx) 5-pin Terminal Block Connector | Connect for firmware upgrade. |
| 7 | RS-232 (Rx, Tx) (with common G pin) | Connect for serial extension (9600 baud rate). |
| 8 | 12V DC Power Connector | Connect to the power adapter. |
Step 3: Mount EXT3-U-R
You can install the EXT3-U-R using one of the following methods:
- Refer to the Quick Start Guide provided in the package for detailed instructions on mounting.
Step 4: Connect inputs and outputs
In this example, the EXT3-U-R is connected to the Kramer EXT3-U-T transmitter. Before connecting any device to your EXT3-U-R, make sure to switch off the power on each device.
Devices connected to the EXT3-U-R USB ports will be powered/charged while connected.
Note: Only 9600 baud rate is supported for RS-232 communication for both EXT3-U-T and EXT3-U-R.
Wiring the RJ-45 Connectors:
This section defines the TP pinout, using a straight pin-to-pin cable with RJ-45 connectors. It is recommended to connect/solder the cable ground shielding to the connector shield for better performance.
| EIA / TIA 568B PIN | Wire Color |
|---|---|
| 1 | Orange / White |
| 2 | Orange |
| 3 | Green / White |
| 4 | Blue |
| 5 | Blue / White |
| 6 | Green |
| 7 | Brown / White |
| 8 | Brown |
To achieve the specified extension distances, it is recommended to use the Kramer cables available at www.kramerav.com/product/EXT3-U-R. Using third-party cables may cause damage.
Step 5: Connect power
The EXT3-U-R is powered via PoC (Power over Cable).
FAQ:
Q: Where can I download the full user manual and check for firmware upgrades?
A: You can download the full user manual and check for firmware upgrades at www.kramerav.com/downloads/EXT3-U-R
Q: How many USB ports does the EXT3-U-R have?
A: The EXT3-U-R has 4 USB 2 Type A ports.
Q: What baud rate is supported for RS-232 communication?
A: Only 9600 baud rate is supported for RS-232 communication for both EXT3-U-T and EXT3-U-R.
Scan for full manual
EXT3-U-R Quick Start Guide
This guide helps you install and use your EXT3-U-R for the first time.
Go to www.kramerav.com/downloads/EXT3-U-R to download the latest user manual and check if firmware upgrades are available.
Check what’s in the box
- EXT3-U-R USB Receiver
- 1 Bracket set
- 4 Rubber feet
- 1 Quick start guide
Get to know your EXT3-U-R
EXT3-U-R
| # | Feature | Function | |
| 1 | LINK LED | Flashes blue when a link is established. | |
| 2 | AUDIO OUT 3.5mm Mini Jack | Connect to an unbalanced stereo audio acceptor. | |
| 3 | USB 2 Type A Ports (1 to 4) | Connect to USB devices.
Connect the receiver directly to the power adapter in order to charge USB devices. |
|
| 4 | ON LED | Lights green when locally powered by the power adapter. Lights orange when powered by PoC. | |
| 5 | LINK IN RJ-45 Connector | Connect to the LINK OUT port on the EXT3-U-T. | |
| 6 | PROG (Tx, Rx) | 5-pin Terminal Block Connector (with common G pin) | Connect for firmware upgrade. |
| 7 | RS-232 (Rx, Tx) | Connect for serial extension (9600 baud rate). | |
| 8 | 12V DC Power Connector | Connect to the power adapter. | |
Mount EXT3-U-R
Install EXT3-U-R using one of the following methods:
- Attach the rubber feet and place the unit on a flat surface.
- Fasten a bracket (included) on each side of the unit and attach it to a flat surface (see www.kramerav.com/downloads/EXT3-U-R).
- Mount the unit in a rack using the recommended rack adapter (see www.kramerav.com/product/EXT3-U-R).
- Ensure that the environment (e.g., maximum ambient temperature & air flow) is compatible for the device.
- Avoid uneven mechanical loading.
- Appropriate consideration of equipment nameplate ratings should be used for avoiding overloading of the circuits.
- Reliable earthing of rack-mounted equipment should be maintained.
- Maximum mounting height for the device is 2 meters.
Connect inputs and outputs
- In this example EXT3-U-R is connected to the Kramer EXT3-U-T transmitter.
- Always switch OFF the power on each device before connecting it to your EXT3-U-R.
- Devices that are connected to the EXT3-U-R USB ports are powered/charged while connected.
- Only 9600 baud rate is supported for RS-232 communication for both EXT3-U-T and EXT3-U-R.
Wiring the RJ-45 Connectors
This section defines the TP pinout, using a straight pin-to-pin cable with RJ-45 connectors.
| EIA /TIA 568B | |
| PIN | Wire Color |
| 1 | Orange / White |
| 2 | Orange |
| 3 | Green / White |
| 4 | Blue |
| 5 | Blue / White |
| 6 | Green |
| 7 | Brown / White |
| 8 | Brown |
It is recommended that the cable ground shielding be connected/soldered to the connector shield.
To achieve specified extension distances, use the recommended Kramer cables available at www.kramerav.com/product/EXT3-U-R.
Using third-party cables may cause damage!
Connect power
EXT3-U-R is powered via POC.
Safety Instructions (See www.kramerav.com for updated safety information)
Caution:
- For products with relay terminals and GPI\O ports, please refer to the permitted rating for an external connection, located next to the terminal or in the User Manual.
- There are no operator serviceable parts inside the unit.
Warning:
- Use only the power cord that is supplied with the unit.
- Disconnect the power and unplug the unit from the wall before installing.
Documents / Resources
 |
kramer EXT3-U-R USB 2.0 Extender Kit over Extended Reach [pdf] User Guide EXT3-U-R USB 2.0 Extender Kit over Extended Reach, EXT3-U-R, USB 2.0 Extender Kit over Extended Reach, Extender Kit over Extended Reach, over Extended Reach, Extended Reach |
