ATI Audio DXA112-BNC User Manual
Page 4
ATI Audio Inc.
Tel: 856-719-9900
www.
audio.com
INSTALLATION:
LOCATION
To avoid addition of jitter (timing variations) to the digital bitstream, which could
cause noise and distortion in the recovered audio, avoid locating the DXA in
close proximity to a high energy, high frequency switching type power supply or a
power amplifier that utilizes a switching supply. If possible, do not power both
devices from the same AC power line.
Expensive components start to die at internal temperatures above 70°C (158°F).
We recommend that you maintain rack temperatures below 50°C (122°F) to
prevent excessive internal temperature buildup. This is another good reason not
to mount the DXA directly above that 500W power amplifier. Don’t force the DXA
to support the weight of 28 coax or 16 XLR cables (especially when you drop that
500W power amplifier on the cable bundle); support the cables.
POWER
If it is necessary to convert a unit wired for 115VAC to 230VAC operation, unplug
the unit from the power source, remove the four cover mounting screws and
locate the E1 jumpers next to the power transformer. Clip the jumpers 1-2 and 3-
4 (don’t unsolder), jumper from 2-3 carefully soldering together the free ends of
2-3 previously clipped. This procedure is recommended to avoid soldering
damage to the multi-layer PC board.
WIRING
XLR-equipped units require special controlled impedance, 110 ohm, low loss, foil
shielded, twisted pair cables. Standard audio cable is not recommended except
for runs of only a few feet. Belden and most other cable manufacturers offer
special digital audio cabling for this application. BNC types use 75-ohm coax
(RG59). Select a cable with losses less than 20dB at 12MHz (for data rates up to
96kHz) at the maximum distance you require.