EXT3-21-XR-TR - AV extender Kramer - Free user manual and instructions
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| Product Type | AV Extender (HDBaseT) |
| Brand | Kramer |
| Model | EXT3-21-XR-TR |
| Signal Support | HDMI 2.0, HDBaseT 2.0, HDCP 2.2 |
| Maximum Resolution | 4K@60Hz (4:4:4) with HDR and 10-bit color |
| Transmission Distance | Up to 100m for 4K signals and 130m for 1080p over Cat6A |
| Audio Support | Up to 7.1 multi-channel PCM, Dolby TrueHD, DTS-HD Master Audio |
| Inputs | 1× HDMI, 1× RJ-45 (HDBaseT), 1× IR, 1× RS-232, 1× Ethernet |
| Outputs | 1× HDBaseT (RJ-45), 1× HDMI loop output |
| Ethernet Connectivity | 100 Mbps LAN passthrough via HDBaseT |
| Control Extension | Bi-directional RS-232 and IR pass-through |
| Power Supply | 48V DC, 1A external adapter (included) |
| Power Consumption | 30W typical |
| Dimensions (W×D×H) | 12.5 cm × 7.5 cm × 2.8 cm |
| Weight | 0.4 kg (approx.) |
| Safety | ESD protection, vents on all sides, use only with provided power supply |
| Maintenance | Clean with a soft dry cloth; avoid liquids; periodical reseating of cables |
| Repairability | Refer to authorized Kramer service center; no user-serviceable parts |
| General Information | Plug-and-play setup, compatible with Kramer HDBaseT receivers, compact desktop design |
Frequently Asked Questions - EXT3-21-XR-TR Kramer
What is the maximum transmission distance for the Kramer EXT3-21-XR-TR?
The EXT3-21-XR-TR can transmit 4K@60Hz signals up to 100m and 1080p signals up to 130m over a single Cat6A cable, using HDBaseT technology.
Does the EXT3-21-XR-TR support HDR content?
Yes, it supports HDR10 and Dolby Vision for enhanced contrast and color.
What type of cable is required for installation?
Use shielded Cat6A cables with RJ-45 connectors for optimal performance. For HDMI connections, use a high-speed cable supporting HDMI 2.0.
Can I extend RS-232 and IR control signals?
Yes, the unit provides bi-directional RS-232 pass-through and IR control, allowing remote device management.
Does the receiver need a separate power supply?
No, the receiver can be powered via Power over HDBaseT (PoH) from the transmitter, so only the transmitter requires a power source.
Is the EXT3-21-XR-TR compatible with 4K 4:4:4 color sampling?
Yes, it supports 4K@60Hz with 4:4:4 color sampling and HDCP 2.2 for protected content.
How do I use the Ethernet passthrough feature?
Connect your network source to the Ethernet port on the transmitter and the network device to the receiver's Ethernet port. The link supports up to 100 Mbps.
What should I do if there is no video output?
Check all cable connections, ensure the unit is powered (green LED), and verify that the receiver is compatible and powered. Try a different HDMI source or display.
Can I use the local HDMI loop output?
Yes, the transmitter includes a HDMI loop output for monitoring the source on a local display without affecting the remote transmission.
Is the device rack-mountable?
The unit is designed as a compact desktop device, but optional rack-mount kits are available for installation in a 19-inch rack.
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USER MANUAL EXT3-21-XR-TR Kramer
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Product information
Brand : Kramer
Model : EXT3-21-XR-TR
Category : AV extender