NAD C 425 owner manual 12V Trigger Input, System Integration RS-232, Technical Details

Operation

SETUP FOR CUSTOM AND MULTI-ZONE INSTALLATIONS

REMOTE CONTROL CODES

The NAD C 425 has a remote control command receiver built in so it will respond to NAD remote control commands, such as from most NAD system remote controls. This will allow access to basic functions such as preset up/down.

Particularly with Custom Install in mind, the NAD C 425 will respond to other commands not usually found on NAD remote control handsets. The table below indicates most commands the C 425 recognises.

The NAD C 425 uses the NEC format for IR transmission; customer code is 877C, the corresponding hex codes are next to the IR command:

Function	HexCode
Preset	D2
Preset	D1
Tune	D4
Tune	D3
Preset 1	8A
Preset 2	8E
Preset 3	92
Preset 4	96
Preset 5	8B
Preset 6	8F
Preset 7	93
Preset 8	97
Preset 9	98
Preset 0	C7
Power On	F0
Standby	F1
FM Mute/Mode	37
Blend	35
Sleep	F3
Dimmer	F2
Display	26
AM	82
FM	81

12V TRIGGER INPUT

NAD components equipped with 12V output triggers are fully compatible with the C 425’s 12V input trigger.

Plug type:	3.5mm mono mini-jack
Operating range:	6 to 15 V DC
Current drawn:	<10mA
Centre pin =	+
Shaft =	–

SYSTEM INTEGRATION (RS-232)

The C425’s RS-232 port offers extensive integration to sophisticated media-system and home-automation control, and permits full control of all of the C425's features. Using this port, the C425 can be connected to any other device with an RS-232 port, such as a personal computer or a home automation system. Any command or function that can be issued from the front panel or the TNR 1 remote controller can be performed via the RS-232 port, and information feedback of the C425’s current settings.

TECHNICAL DETAILS

The RS-232 port uses the following standard pin-out arrangement:

DB-9 Pin #	Function
2	Transmit Data
3	Receive Data
5	Signal Ground

DB-9 pin-out Assignment

NOTES:

Use a standard DB-9 male to DB-9 female RS-232 serial cable between your Windows®PC and the C425.

Do not use a null-modem type of RS-232 cable.

Some Windows® PC's may not have RS-232 serial connector. In this event, use a standard "off-the-shelf" RS-232 to USB adaptor to connect to your Windows® PC. Follow the instructions that come with the RS-232 to USB adaptor for setting up the adaptor. Your custom installer or dealer can assist you in the proper setup and configuration of the RS-232 interface.

Neither a DB-9 RS-232 serial cable nor a RS-232 to USB adaptor is supplied with the C425.

Please log onto www.nadelectronics.com for the latest C425 interface control software.

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