Studio Technologies 68 V.1 - Manual (Page 11)

Model 68/69 User Guide Issue 2, June 1999
Studio Technologies, Inc. Page 11
for Surround
Installation
In this section you will be installing the
Model 68 Central Controller in an equip-
ment rack. Audio input and monitor output
connections will be made. A location will
be selected for the Model 69 Control
Console and it will be connected to the
Model 68. If required, external equipment
will be interfaced to the remote control
inputs. AC mains power will be connected
to the Model 68.
System Components
The shipping carton contains one each of
the following: Model 68 Central Controller,
Model 69 Control Console, 20-foot (6.1m)
9-pin D-sub interconnecting cable, user
guide, and warranty card. Units destined
for North America also include an AC
mains cord. Your dealer or distributor will
provide an AC mains cord for non-North
American destination.
Mounting the Model 68
The Model 68 Central Controller requires
one space in a standard 19-inch (48.3cm)
equipment rack. Select a location that is
convenient to both the analog audio sig-
nals and the Model 69 Control Console.
A 20-foot (6.1m) cable is supplied to
connect the Model 68 to the Model 69.
You can supply your own interconnecting
cable, however 50 feet (15.3m) is the
recommended maximum length. Secure
the Model 68 into the equipment rack
using two mounting screws per side.
Cable Harnesses
Three 25-pin D-sub connectors are utilized
for audio input and output interconnec-
tions. The 16 line-input channels, desig-
nated input 1 (Surround A), input 2 (Sur-
round B), input 3 (Stereo A), and input 4
(Stereo B), can interface using
two standard DA-88-style input cable
harnesses. The 25-pin D-sub harness
used for the six monitor output channels
and the L/R Bypass input uses a wiring
scheme slightly different from the “DA-88
standard;” the L/R Bypass input connec-
tions make it different. In a standard DA-
88 output cable harness, all eight channels
would use, for example, XLR-type plugs
(males). A harness for the Model 68 would
have the first six channels using XLR-type
plugs (males) and the last two channels
XLR-type connectors (females).
Audio Connections
Audio signal connections are made by way
of three 25-pin D-sub connectors, located
on the Model 68’s back panel. Three cable
harnesses, each with a 25-pin D-sub plug
(male) on one end and the desired con-
nectors on the other end, are necessary.
These cable harnesses are not supplied
by Studio Technologies. (Note that our
friends in some locations may use the
term “loom” instead of harness.)
The wiring scheme used by the D-subs
comply with that made familiar by
TASCAM with their DA-88 product. Wiring
harnesses prepared for connecting to the
surround and stereo input channels are
identical to that of a DA-88 input harness.
A wiring harness prepared for the monitor
output channels and L/R Bypass input are
wired in a slightly different fashion. Please
refer to Figures 4 and 5 for the exact
connection details. Note that the Model
68’s D-sub connectors use 4-40 threads.
Unless there’s a special need, it may be
cost and time effective for you to purchase