ONKYO tx-nr646 User Manual

Reference Information

Link operation with a product conforming to the CEC of the 

HDMI standard. 

Note that linked operation is not always guaranteed with all 

CEC devices.

TV (Random order): 

● Toshiba TV sets

● Sharp TV sets

Players/Recorders (Random order):

● Onkyo and Integra RIHD-compatible players

● Toshiba players and recorders

● Sharp players and recorders (only when used together with 

Sharp TV sets)

Caution: For linking functions to work properly, do not connect more 

RIHD-compatible components than the quantities specified below, 

to the HDMI jacks. Linking functions are not guaranteed when more 

RIHD-compatible components than the below mentioned quantities 

are connected. Furthermore, do not connect the AV receiver to 

another AV receiver/AV amplifier via HDMI.

● Blu-ray Disc/DVD players: up to 3.

● Blu-ray Disc/DVD recorders: up to 3.

● Cable TV tuner, terrestrial digital tuner, and satellite broadcasting 

tuner: up to 4 units.

1. Turn on the power of all connected components.

2. Turn off the power of the TV, and confirm that the power 

of the connected components is turned off automatically 

with the link operation.

3. Turn on the power of the Blu-ray Disc/DVD player/

recorder.

4. Start playback on the Blu-ray Disc/DVD player/recorder, 

and verify the following:

● The AV receiver automatically turns on, and selects 

the input to which the Blu-ray Disc/DVD player/

recorder is connected.

● The TV automatically turns on, and selects the input 

to which the AV receiver is connected.

5. Following the instruction manual of the TV, select "Use 

the TV speakers" from the menu screen of the TV, and 

confirm that the audio is output from the speakers of 

the TV, and not from the speakers connected to the AV 

receiver.

6. Select "Use the speakers connected from the AV 

receiver" from the menu screen of the TV, and confirm 

that the audio is output from the speakers connected to 

the AV receiver, and not from the TV speakers.

Caution: 

● Even if you set to output audio on the TV speakers, audio will 

be output from the speakers connected to the AV receiver when 

you adjust the volume or switch the input on the AV receiver. 

To output audio from the TV speakers, redo the corresponding 

operations on the TV.

● In case of an RIHD connection with RI and RI EX audio control 

compatible components, do not connect the RI cable at the 

same time.

● On the TV, when you select anything other than the HDMI 

jack to which the AV receiver is connected, the input on the AV 

receiver will be switched to "TV".

● The AV receiver will automatically power on in conjunction 

when it determines it to be necessary. Even if the AV receiver 

is connected to an RIHD compatible TV or player/recorder, it 

will not power on if it is not necessary. It may not power on in 

conjunction when the TV is set to output audio from the TV.

● Linked system functions with the AV receiver may not work 

depending on the component model connected. In such cases, 

operate the AV receiver directly.

● When the player/recorder cannot be operated with the remote 

controller of the AV receiver, the corresponding component may 

not be programmed to support the remote controller operation of 

CEC. Program the remote control code of the component maker 

to the remote controller for using.

HDMI (High-Definition Multimedia Interface) is a digital 

interface standard for connecting TVs, projectors, Blu-

ray Disc/DVD players, set-top boxes, and other video 

components. Until now, several separate video and audio 

cables have been required to connect AV components. 

With HDMI, a single cable can carry control signals, digital 

video and digital audio (2-channel PCM, multichannel 

digital audio, and multichannel PCM).

The HDMI video stream (i.e., video signal) is compatible 

with DVI (Digital Visual Interface) (*1), so TVs and displays 

with a DVI input can be connected by using an HDMI-to-

DVI adapter cable. (This may not work with some TVs and 

displays, resulting in no picture.)

This unit supports HDCP (High-bandwidth Digital Content 

Protection) (*2), so it can display picture only on HDCP-

compatible components.

HDMI of the unit supports the following functions.

Audio Return Channel, 3D, x.v.Color, Deep Color, LipSync, 

4K (Passthrough)

● 2-channel linear PCM (32 - 192 kHz, 16/20/24 bit)

● Multichannel linear PCM (up to 7.1 ch, 32 - 192 kHz, 

16/20/24 bit)

● Bitstream (Dolby Atmos, Dolby Digital, Dolby Digital 

Plus, Dolby TrueHD, DTS, DTS-HD High Resolution 

Audio, DTS-HD Master Audio)

● DSD

Your Blu-ray Disc/DVD player must also support HDMI 

output of the above audio formats.

About Copyright Protection: 

The unit supports Revision 1.4 and Revision 2.2 (HDMI 

OUT MAIN/SUB and HDMI IN1 to 3 only) of the HDCP 

(High-bandwidth Digital Content Protection) (*2), a copy-

protection system for digital video signals. Other devices 

connected to the unit must also support HDCP.

*1

DVI (Digital Visual Interface): The digital display interface standard set 

by the DDWG (*3) in 1999.

*2

HDCP (High-bandwidth Digital Content Protection): The video 

encryption technology developed by Intel for HDMI/DVI. It is designed 

to protect video content and requires a HDCP-compatible HDMI/DVI 

receiver to display the encrypted video.

*3

DDWG (Digital Display Working Group): Lead by Intel, Compaq, Fujitsu, 

Hewlett Packard, IBM, NEC, and Silicon Image, this open industry 

group's objective is to address the industry's requirements for a digital 

connectivity specification for high-performance PC and digital displays.