Speck Electronics ASC - Manual (Page 10)

Because the power module uses a 2 bladed AC plug, audio signal
grounds and DC common at the Model ASC are isolated from the
AC safety earth. The chassis of the ASC can be connected to earth
by way of the chassis ground terminal on the rear panel.
The location of the Model ASC should be such that the operator has a
clear, unobstructed view of the front panel from his/her normal
operating position. The unit should also be within easy reach of the
operators normal position in order to facilitate the use of the front panel
controls
The 1/2 rack form factor of the ASC allows a single unit to be mounted
on a table top with the (4) rubber bumpers supplied with the unit,
multiple units stacked, or two units mounted side-by-side on a 1U rack
shelf manufactured by Middle Atlantic Products (Model UTR1).
When attaching the ASC to the rack shelf, it should be secured with the
(2) 6-32 x 1/2” machine screws supplied with the unit. Do not use
screws that are longer than 1/2” in length as they could damage the
internal circuit board. When the ASC or multiple ASC’s are mounted to
the rack shelf, they may be installed into any 19" wide equipment rack
that uses standard E.I.A. universal spacing.
In order to provide power to the Model ASC, it is necessary to connect
the 4 pin rectangular plug of the power module to the rear panel. Before
connecting the 4 pin rectangular plug to the ASC, make certain the
power module is not connected to an AC receptacle.
To connect the power supply, fit the rectangular white Molex plug from
the power supply cable into the rectangular shaped opening on the rear
panel that is labeled “Power” (not “Aux DC I/O”). The respective
connectors are keyed so the plug and its receptacle can fit in only one
direction. Push the plug into the header until it stops.
After the power module plug has been connected, place the power
supply cable over the nylon wire tie holder to the left of the hole and
secure with the wire tie that has been included.
One of the primary reasons that the PS-4 power module is external is to
insure that its power transformer maintains a safe distance from the
active electronics of the Model ASC. It is recommended that the power
module be located at a reasonable distance from the ASC, mixers, and
audio cables.
6
Mechanical
Installation
Connecting the
power module
Power Module
Mounting location
Chapter 2 Installation Section