Studio Technologies 58 1998 - Manual (Page 19)

Model 58/59 User Guide Issue 2, April 1998
Studio Technologies, Inc. Page 19
for Surround
+4dBu, and are compatible with balanced
or unbalanced sources. A trim pot is asso-
ciated with each insert return, allowing the
input sensitivity to be adjusted over a
±2dB range. Refer to the Configuration
section of this guide for details on using
the trim pots. Note that connection of
unbalanced sources should follow the
procedure described in the section cover-
ing the line inputs.
Connecting the Model 59 to a
Model 58
A cable utilizing a 9-pin D-sub plug (male)
on each end is used to interconnect a
Model 59 Control Console with a Model 58
Central Controller. A 20-foot (6.1m) cable
is provided with each Model 58/Model 59
base configuration.
Should a cable of different length be
required it should be wired in a one-to-one
fashion for all 9 pins. Pin 1 carries signal
common, and must be connected at both
ends. A shield connection from the cable
should be connected to pin 1 at one, or
both, ends. For best performance the
cable generally should not exceed 50 feet
(15.3m) in length. The reality is that a
cable much longer in length should work,
as long as an excellent-quality cable is
utilized. We define “excellent” as extensive
shielding along with very low capacitance.
The low cable capacitance limits the
amount of data-signal waveform distortion.
As far as the maximum length, go ahead
and try it—if it works, it works!
Each Model 58 contains a 9-pin D-sub,
labeled TO/FROM CONTROL CONSOLE.
Select one of these for connection to the
Model 59. While it doesn’t technically
matter which Model 58 is selected, it is
often best for clarity to use the Model 58
that is going to be configured with unit ID 1.
Remote Control Connections
The remote control input circuitry is physi-
cally located in the Model 59 Control Con-
sole. Access to the remote control inputs is
by way of the 9-conductor cable that links
the Model 59 with the Model 58 Central
Controllers. In fact, five of the nine connec-
tions in this D-sub are dedicated for use by
the remote control inputs and have nothing
directly to do with the Model 58 Central
Controller. Since all the 9-pin D-sub connec-
tors on the Model 58 units are connected in
parallel, access to the remote control inputs
is made using any available 9-pin D-sub on
any of the Model 58 units. Refer to Figure
10 for a detailed description of the 9-pin
D-sub connections.
Pin Signal Direction
1 Common, Model 58 units to
Power Supply Model 59
2 +15V Model 58 units to
Model 59
3 Data Current Model 59 to
Source Model 58 units
4 Common Model 59 to
Model 58 units
5 Contact Input 1 Remote Contact to
Model 59
6 Contact Input 2 Remote Contact to
Model 59
7 CCW Remote Level
Potentiometer to Model 59
8 Wiper Remote Level
Potentiometer to Model 59
9 CW Remote Level
Potentiometer to Model 59
Notes: 1) Connector type on Model 58 is 9-pin D-subminiature
female. Connector uses 4-40 threaded inserts for
locking with mating plug.
Figure 10. Connector Pin Out for Control
Console and Loop Thru Connections
Level
Control