
TP-873xr/TP-874xr Quick Start (P/N: 2900-301014QS REV 1)
TP-873xr/TP-874xr Quick Start Guide
This guide helps you install and use your TP-873xr/TP -874xr for the first time.
Go to www.kramerav.com/downloads/TP-873xr, TP-874xr to download the latest user manual and check if
firmware upgrades are available.
Step 1: Check what’s in the box
TP-873xr HDMI 4K Line Transmitter or
1 Power adapter and cord per device
TP-874xr HDMI 4K Line Receiver
Step 2: Get to know your TP-873xr and TP-874xr
TP-873xr
Lights green when an active source device input signal is detected.
Lights green when an active, far-end sink (acceptor) output signal is detected via
the DGKAT link.
Lights green when the device receives power.
Connect to an HDMI source.
DGKAT-2 OUT RJ-45 Connector
Connect to the DGKAT 2 IN RJ-45 connector on the TP-874xr.
Set the operation DIP-switches (see Step 4: Connect the inputs and outputs).
IR 3.5mm Mini Jack Connector
Connect to an external infrared emitter / sensor for IR signal bidirectional
extension to control a remote device. For example, connect to an external infrared
sensor to control the HDMI OUT acceptor that is connected to TP-874xr.
RS-232 (G, Rx, Tx) 3-pin Terminal
Block Connector
Connect to a laptop to perform firmware upgrade or to an RS-232 port for serial
signal bidirectional extension to the receiver. For example, connect to an SL-240C
controller device to serially control the HDMI OUT acceptor that is connected to
TP-874xr.
12V DC connector for powering the unit when it is not powered by TP-874xr via
the DGKAT link.

Lights green when an active source device input signal is detected.
Lights green when an active, far-end sink (acceptor) output signal is detected via
the HDBT link.
Lights green when the device receives power.
Connect to an HDMI acceptor.
DGKAT-2 IN RJ-45 Connector
Connect to the DGKAT 2 OUT RJ-45 connector on the TP-873xr
Set the operation DIP-switches (see Step 4: Connect the inputs and outputs).
IR 3.5mm Mini Jack Connector
Connect to an external infrared emitter / sensor for IR signal bidirectional
extension. For example, connect to an external infrared sensor to control the
HDMI IN source that is connected to TP-873xr.
RS-232 (G, Rx, Tx) 3-pin Terminal Block
Connector
Connect to a laptop to perform firmware upgrade or to an RS-232 port for serial
signal bidirectional extension to the transmitter. For example, connect to an
RS-232 device to be controlled, for example, a display.
12V DC connector for powering the unit when it is not powered by TP-873xr via
the DGKAT link.
Step 3: Install TP-873xr/TP-874xr
Install TP-873xr/TP-874xr 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.
For more information go to www.kramerav.com/downloads/TP-873xr, TP-874xr.
• Mount the unit in a rack using the recommended rack adapter
(see www.kramerav.com/product/TP-873xr, TP-874xr).
Step 4: Connect the inputs and outputs
Always switch OFF the power on each device before connecting it to your TP-873xr/TP-874xr. For best results, we recommend that
you always use Kramer high-performance cables to connect AV equipment to TP-873xr/TP-874xr.
We highly recommend using only Kramer UNIKAT cables with these products. If using 3rd party shielded CAT-6A cables, both ends of the
shield must be soldered to the connectors for the products to function properly. Do not use any jumpers, unshielded wall plates or midspan cable connections. These extenders are not compatible with HDBaseT technologies. Prior to signal extension, ensure that the
extension line cable is lying straight and not coiled.