Addlogix RPS14 Installation, Free standing, Rack mounting, Location, Earthing, Fitting in a rack

Installation

Free standing

The RPS14 can be operated as a freestanding unit for shelf or floor operation. Ensure adequate air flow around the unit. It must not be covered in any way. Always stand the unit on a firm flat surface well away from any soft furnishings or carpet.

Rack mounting

The RPS14 is designed as a 19 inch rack mount unit and will occupy 2U (3.5 inches) of rack space. The fast feet may need to be removed before rack mounting. Retain feet for future use.

An important consideration when rack-mounting the unit is the need for natural convection of airflow around the unit. Good ventilation below the unit, in the floor or back of the rack, will ensure a continuous path for airflow.

Rack equipment known to produce a significant amount of heat should not be mounted directly below the power supply unit. Equipment which also relies on good airflow within the rack (i.e. most power amplifiers and other power supply units) should be given due consideration and some space should be provided between such units and between the RPS14 unit. Forced convection, by means of a fan-tray, may be desirable in some situations.

Location

As with any power supply unit that contains a mains voltage transformer, it is preferable to provide a degree of physical isolation of the unit from other equipment, particularly that which carries low level audio signals, to avoid any possible interference pick-up. For this reason power supply units supplied with Allen & Heath ML series mixing consoles are provided with a long (2.9m) output cable to enable them to be positioned away from the mixing console. Backup power supply units, bought separately, are provided with a shorter (0.75m) output cable to combine power supply units. For the same reason, when rack-mounting it is preferable to avoid locating the unit next to signal processing equipment.

Earthing

Finally, some consideration should be given to the earthing arrangement of the system, at the centre of which is the console and the RPS14. The console chassis is earthed to the mains earth via the power supply unit. When rack-mounting the RPS14 care should be taken to avoid any possible “ground loops” in the system which may introduce audible hum or buzz to otherwise clean audio signals. Ground loops occur where signal processing equipment patched to the console, has its signal earth connected to the equipment chassis. A ground loop is formed if the chassis of the signal processing equipment and the RPS14 chassis are in electrical contact through the fixing rails they share in the rack. The RPS14 has audio 0V and mains earth connected internally.

Fitting in a rack

443mm (17.4")

The RPS14 is supplied ready for use free standing. For rack mounting remove and retain the four rubber feet.

Do not obstruct the ventilation slots.

Ensure adequate air flow around the RPS14.

Do not install the unit directly above or below other equipment.

Do not remove the cover of the RPS14.

There are no user serviceable parts inside.

483mm (19") 310mm (12.2") 374mm (14.7")

	RPS14	ALLEN&HEATH
92mm	88mm
	3.5"
3.6"	2U

6 RPS14 User Guide