TL Audio 5021 - Manual (Page 7)

3 INSTALLATION
3.1 AC Mains Supply.
The unit is fitted with an internationally approved 3-pin IEC connector. A
mating socket with power cord is provided with the unit, wired as follows:
Brown: Live.
Blue: Neutral.
Green/Yellow: Earth (Ground).
All mains wiring should be performed by a qualified electrician with all power
switched off, and the earth connection must be used.
Before connecting the unit to the supply, check that the unit is set for the
correct mains voltage. The unit is internally set for 110-120V 60Hz or 220-
240V 50Hz operation, and should only be changed by an authorised service
centre. The mains fuse required is 20mm anti-surge, 1AT rated at 250V. If it is
ever necessary to replace the fuse, only the same type and rating must be
used. The power consumption of the equipment is 20VA.
Warning: attempted operation on the wrong voltage setting, or with an
incorrect fuse, will invalidate the warranty.
3.2
Audio Operating Level.
The 5021 is equipped with inputs and outputs suitable for connection to a wide
variety of other audio equipment. Generally, the balanced XLR connections
will be required for interfacing to other professional equipment, where the
operating level (line-up level or nominal level) will be +4dBu, or approximately
1.2V rms. The unbalanced jack connectors are generally intended for
interfacing to semi-professional equipment and have an operating level of -
10dBu, or about 225mV rms. However, the input and output level switches
allow these levels to be shifted by 14dB, i.e. to +18dBu on the XLRs (suitable
for high levels from a digital machine), and +4dBu on the unbalanced jacks.
The normal default mode would be the +4dBu balanced setting, but if - upon
feeding a digital multitrack machine into the 5021 line inputs - clipping occurs
even on low input gain settings, then the +18dBu setting should be used.
Similarly, If the line output of the 5021 is fed into a digital multitrack input and
very large amounts of 5021 output gain are necessary to register 0dBfs on the
recorder, the +18dBu setting should be used, allowing the 5021 output gain to
be set at a more conservative level.