612R - Audio/video extender Kramer - Free user manual and instructions

Product Type	Audio/Video Extender (Receiver)
Model	612R
Brand	Kramer
Max Resolution	4K @60Hz 4:4:4 (4096x2160)
Max Distance	200 m (656 ft)
Video Connector (Input)	1 x DisplayPort (female)
Optical Connectors	Duplex LC (2 fibers)
Power Supply	5V DC via micro USB or DisplayPort pin #20
Power Adapter	2 x wall-mount power adapters (included)
Dimensions (each unit)	2.6 cm x 7.2 cm x 1.5 cm (1" x 2.8" x 0.6")
Net Weight (each unit)	0.12 kg (0.3 lbs)
Operating Temperature	0° to +50°C (32° to 122°F)
Storage Temperature	-30° to +70°C (-22° to 158°F)
Operating Humidity	0 to 85%
Compliance	CE, FCC Class B, RoHS
Laser Safety Classification	Class I (eye safe)
Included Accessories	2 micro USB cables, 2 power adapters, 1 DP extension cable (20 cm)
Maintenance	Clean with dry cloth; no user-serviceable parts inside
Repairability	No user-serviceable parts; contact Kramer for service

Frequently Asked Questions - 612R Kramer

How do I power the 612R receiver?

The 612R can be powered via the included micro USB cable (using the wall-mount adapter or a USB port) or via DisplayPort pin #20. It is recommended to use the USB power adapter.

What is the maximum distance supported by the 612R?

The 612R supports extension up to 200 meters (656 feet) using multi-mode fiber optic cable OM3 (50/125 μm).

What video resolutions does the 612R support?

It supports up to 4K @60Hz 4:4:4 (4096x2160) without signal scaling or compression.

The display shows a black screen. What should I check?

First, ensure both source and display are powered on. Check that the power adapters are properly connected on both sides. Make sure DisplayPort connectors are fully plugged in. Reboot the system by disconnecting and reconnecting power adapters.

Can I use the 612R without the USB power adapter?

Yes, the 612R can draw power from the DisplayPort interface (pin #20), but using the USB power adapter is recommended for reliable operation.

What type of fiber optic cable is required?

Use a duplex multi-mode fiber optic cable with LC connectors (OM3 50/125 μm recommended). Ensure the connectors are properly aligned: A to A and B to B.

Is the laser in the 612R safe for eyes?

Yes, the 612R (receiver) contains a laser classified as Class I, which is eye-safe under normal use. However, avoid direct eye exposure into the optic connectors when powered.

What is included in the package?

The package includes: 2 micro USB to USB Type-A cables, 2 wall-mount power adapters, and 1 DisplayPort (male to female) extension cable (20 cm).

The image is distorted or has noise. How can I fix it?

Check the display settings and ensure the resolution is set below 4096x2160 at 60Hz. Reset the system by disconnecting and reconnecting the power adapters or the fiber cable.

Can I use the 612R with a non-Kramer transmitter?

The 612R is designed to work with the Kramer 612T transmitter. While it may be compatible with other DP optical extenders, performance is not guaranteed.

USER MANUAL 612R Kramer

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612T, 612R Installation Instructions

4K60 4:4:4 DP Tx/Rx over Extended-Reach Multi-Mode Fiber Optic Cable

This guide helps you install and use your 612T, 612R for the first time.

Go to https://www.kramerav.com/product/612r/t to download the latest user manual and check if firmware upgrades are available.

612T, 612R 4K60 4:4:4 DP Tx/Rx over Extended-Reach Multi-Mode Fibe Cable

Congratulations on purchasing your Kramer 612T and 612R Plug and Play active 4K60 4:4:4 DP Tx/Rx over Extended-Reach Multi-Mode (MM) Fiber Optic cable. 612T and 612R extend signals of up to 4096x2160 @60Hz, over a distance of up to 200m (656ft) without signal scaling or data compression, providing a maximum data rate of 21.6Gbps (5.4Gbps per lane). 612T and 612R are easily and securely connected via a 2LC fiber connector and can be powered either from the USB connector or from the Display Port interface (pin #20).

Figure 1: 612T Transmitter and 612R Receiver

Safety

Caution: There are no operator serviceable parts inside the unit.

Warning: Disconnect the power and unplug the unit from the wall before installing.

Warning: Avoid direct eye exposure into the optic connectors when powered, although this product is regulated strictly enough to operate under the Laser Class 3R for eye safety.

See www.KramerAV.com for updated safety information.

Installation

To install 612T and 612R:

1. Unpack the contents of the package with care.

We recommend that you save the original box and packaging materials for possible future shipment.

1. Turn on the power to the DisplayPort source (for example, a laptop) and acceptor (for example, a display).

2. Power the 612T and 612R:

- Connect the micro USB connector on each device to a USB cable (supplied).

- Connect the USB cable either to the wall-mount power adapter (supplied) and to the mains, or to a USB port. The POWER LED lights and the STATUS LED flashes three times.

Although the transmitter and receiver can be powered via pin #20 on the DisplayPort interface, we recommend that you use the USB power adapters on both sides.

1. Connect the two LC optical fibers between 612T and 612R.

Connect (A) to (A) and (B) to (B). Make sure that the duplex connectors are connected properly. The STATUS LED flashes.

Do not look directly into the LC connectors on the 612T (the transmitter side) when it's powered. This product operates under LASER Class I, classified by CDRH/FDA for eye safety.

We recommend that you avoid using intermediate cables or adapters. Using them may affect the transmission quality.

1. Connect 612T to the DisplayPort connector on the source side and 612R on the acceptor side.

Make sure that the 612T is always connected to the source side and the 612R is connected to the acceptor side.

graph TD
    A["612T"] -->|2 LC Optical Fiber| B["612R"]
    C["Laptop"] -->|DP| D["Power"]
    E["Display"] -->|DP| F["Power"]
    G["USB Power Source"] --> A
    H["USB Power Source"] --> B

If you cannot connect the 612R directly to the display, we recommend that you use the DisplayPort (M) to-(F) extension cable supplied with the package.

Once the system is connected, the Status LEDs on both 612T and 612R flash.

Troubleshooting

If the display appears black:

• Check that the source and display devices are both switched on.
• Check that the power source adapters are properly connected on both sides.
• Make sure that both DisplayPort connector heads are fully plugged into the devices.
• Reboot the system.

- Reset the system by disconnecting and then reconnecting the 612T or 612R, or by disconnecting and then reconnecting the power adapters.

If the image appears distorted and/or there is background noise:

• Go to the display properties and check the settings. Make sure that the resolution is set below 4096x2160 at a 60Hz refresh ratio to check if the graphic resolution is properly defined.
• Reset the system by disconnecting and then reconnecting the 612T or 612R, or by disconnecting and then reconnecting the power adapters.

It is important to connect the devices correctly as marked: 612T to the source side and 6127R to the acceptor side.

Specifications

Video Max. Resolution 4K @60Hz 4:4:4 (4096x2160)
Ports 612T (source end) Male DisplayPort gold plated
Power 5V Via USB source
		Via external source
		From DisplayPort PIN #20
Recommended Cable	Structure Dual Multi-mode OM3 (50/125um) glass fiber
	Optical Connectors Duplex LC	connectors
	Max. Fiber Cable Attenuation (λ=850nm)	2.5dB/KM
	Max. Skew 0.4ns
	Max. Insertion Attenuation 0.5dB
	Total Optical Attenuation 1dB	max @ 656ft/200m extension
	Maximum Length 200m (656ft)
Environmental Conditions	Operating Temperature	0° to +50°C (32° to 122°F)
	Storage Temperature	-30° to +70°C (-22° to 158°F)
	Operating Humidity	0 to 85%
Standard Compliance	CE	EN 55032:2012/AC: 2013 (Class A), EN 61000-3-2:2014, EN 61000-3-3:2013, EN 55024:2010, EN 60950-1:2006+A11:2009+A1:2010+A12:2011+A2:2013
	FCC	CFR 47 part 15 SUBPART B Class B, Section 15.101
	Environmental	RoHS (2011/65/ EU)
General	Net Dimensions (W, D, H), each	2.6cm x 7.2cm x 1.5cm (1" x 2.8" x 0.6")
	Shipping Dimensions (W, D, H)	19.3cm x 25.3cm x 62cm (7.6" x 10" x 24.4")
	Net Weight, each	0.12kg (0.3bs) approx.
	Shipping Weight	1.48kg (3.3lbs) approx.
Accessories	Included	2 Micro USB to USB type-A cables, 2 Wall-mount power adaptors, 1 20cm DisplayPort (M) to (F) copper extension cable