Q2 OPERATION AND MAINTENANCE MANUAL 9601 14
Rack mounted equipment which has unbalanced inputs and outputs
may need to be electrically isolated from the equipment rack and/
or other equipment to avoid earth loops.
DO NOT DISCONNECT THE MAINS EARTH.
Connect all equipment in a logical sequence, starting with the
monitor systems, followed by the multitrack and then the stereo
machines and the peripheral devices and isolate any earth loop
problems as they occur. It is very difficult to rectify a
problematical installation after everything has been connected due
to interaction between the various earth loops.
The Console is supplied with 1 power supply unit 3U high (5.25"),
19" rack mounting. The PSU supplies the console with +18V, -
18V, +48V phantom and Audio Ground (0V). Connection
between supplies and console is a cable, terminated at both ends by
polarised Harting multiway connectors. At the console the
connector is located on the rear panel of the console.
The normal length of the PSU-Console cables is 25 feet (8
metres).
The power supply requires the following Mains supplies :-
220-240 Volts AC, 6.3 A (Maximum current ratings)
100-120 Volts AC, 10 A (Maximum current ratings)
and is connected to the AC Mains via standard IEC 3 pin lead.
The PSU has an integral low-noise cooling fan and should be
provided with at least 1U (1.75") of rack space above and below it.
WARNING - ENSURE THAT THE CORRECT VOLTAGE
HAS BEEN SELECTED ON THE PSU BEFORE SWITCHING
ON THE UNIT.
The selection of the mains input voltage is made by removing the
fuse holder from the rear panel of the PSU, and replacing it in the
correct orientation for the local voltage supply. Ensure that the
correct value fuse is fitted to correspond to the supply.