Studio Technologies 47 - Manual (Page 15)

Model 47 User Guide Issue 1, August 2010
Studio Technologies, Inc. Page 15
by laying flat between the chassis and the
cover. The ribbon cable can then “fan out”
to loose wires or, better yet, be terminated
onto another connector such as a 9-pin
D-subminiature type.
A competent technician can easily fabri-
cate an appropriate remote control input
interconnect wiring assembly. Starting
with a partially pre-made assembly from
Digi-Key (part number A1AXH-1036G-ND)
makes the task even easier.
It’s important to ensure that the source
of the remote control signals can meet
the Model 47’s logic state and timing
requirements. The Model 47 recognizes
an idle remote control input as one that
has no current flowing through it. An ac-
tive remote control input is one that has
current flowing through it for a minimum
of 30 milliseconds. A special case arises
when the auto null button operating
mode has been set to independent. This
requires one front-panel button tap to auto
null channel 1 and two button taps to auto
null channel 2. The remote control equiva-
lent for one tap is current flowing for a
minimum of 30 milliseconds. The equiva-
lent for two taps is current that flows for
30 milliseconds, then a minimum no-cur-
rent period of 30 milliseconds, followed by
current flow for a minimum of 30 millisec-
onds. The second period of current flow
must come within one second of the start
of the first.
Once the interconnect method and the
source of the control signals have been
selected, refer to Figure 4 for connection
details. Ensure that the connected signals
follow the specified polarity or damage to
the opto-coupled inputs may occur.
It’s important that a competent techni-
cian be available to perform the actual
remote control input connection process.
As expected, mating the interconnecting
cable assembly with the Model 47’s 10-pin
“header” requires removing the unit’s cov-
er. As such, this must be done only after
confirming that all sources of mains power
have been disconnected from the unit.
AC Mains Power
The Model 47 operates directly from AC
mains power of 100 to 240 V, 50/60 Hz.
As a “universal mains input” device, there
are no switches to set or jumpers to install.
A 3-pin IEC 320 C14 inlet connector on the
Model 47 mates with a detachable mains
cord set. For units shipped to North Amer-
ica and Japan a cord is supplied that has
a North-American (NEMA 5-15L) standard
plug on one end and an IEC 320 C13 con-
nector on the other. Units bound for other
destinations require that the appropriate
cord set be obtained. The wire colors in the
mains cord should conform to the interna-
tionally recognized color code and should
be terminated according to the following
chart:
Connection Wire Color
Neutral (N) Light Blue
Line (L) Brown
Earth/Ground (E) Green/Yellow
10-Pin 9-Pin D-Sub
Function Header (P9) Interface Cable
Remote Auto Null Interface 1 + 7 4
Remote Auto Null Interface 1 – 9 5
Remote Auto Null Interface 2 + 2 6
Remote Auto Null Interface 1 – 4 7
Remote “Mic Kill” + 6 8
Remote “Mic Kill” – 8 9
Figure 4. Remote control input pin-out chart