ATI Audio DA1008-1 - Manual (Page 4)

Audio Technologies Inc. | 154 Cooper Road #902 | West Berlin, NJ 08091 | Voice 856-719-9900 | Fax 856-719-9903 | www. audio.com
POWER SUPPLY
Dual power transformers are connected out of phase and thoroughly shielded to
minimize radiated hum fields. Split primaries allow use on 115 or 230 VAC, 50/60
Hz. Primary bypass capacitors and a secondary Metal Oxide Varistor provide line
transient protection. Adjustable regulators A2 and A3 provide +/- 18 VDC outputs
set by trimpots Rl and R6 respectively. These regulators are adjusted to +/- 20
VDC for +30 dBm output models. Zener diodes CR3 and CR5 reduce the
regulated voltage to +/- 15 VDC for amplifier A4. A regulated +6 VDC supply and
a zener-derived -6 VDC output operate the logic section.
INSTALLATION
MOUNTING
Optional rack mount brackets, P/N 21181-1 are available for your DAs. These
aluminum extrusions are mounted under the two truss head screws on either
side near the front. Tighten these screws securely. Your DA mounts in 1-3/4
inches (I RU) of rack space.
Your DA may be desk mounted on its' non-slip suction cup feet and left out for
everyone to see since it is so pretty. You can also stack DAs on top of each
other. We don't recommend stacking over 30 high on a desk unless you are over
8 feet tall.
WIRING
The AC ground wire can cause a ground loop with your station ground. If you are
sure your station ground will provide adequate protection to personnel in case of
an AC line short to chassis, a 3 to 2 AC adapter can be used to isolate the power
line ground. We recommend that the adapter be removed and the power line
ground reconnected prior to any service work requiring removal of the station
ground from the chassis.
The four inch silver bearing copper strap, which you are, of course, using for your
station ground is not going to fit around the #6 chassis ground screw on the DA
rear panel. Run the strap to within a few inches of the chassis and jump to the
chassis ground with shield braid.
Audio inputs and outputs should be connected using the rear panel labels as a
guide. Hi outputs are all in phase with each other and in phase with the Hi inputs.
The fanning strips are Kulka part number 649A22 and extras are available from
our parts and accessories department. For convenience, the fanning strips may
be easily cut into shorter input or output sections.