Studio Technologies 42 - Manual (Page 10)

Model 42 User Guide Issue 1, July 2004
Studio Technologies, Inc. Page 11
connected device(s), the minimum voltage
required by the connected device(s), and
the resistance of the cable’s conductors.
This is generally stated as ohms per 1000
feet. Make sure that you account for the
resistance in both the pin 1 and pin 2
legs! In general, if there is the potential for
a cable-length problem, moving to a more
substantial cable gauge, such as 20, 18,
or 16 can be effective.
AC Mains Power
The Model 42 operates directly from AC
mains power of 100 to 230V, 50/60Hz.
Being a “universal input” device, there are
no switches to set or jumpers to install to
match a location’s nominal mains voltage.
For locations that have a mains power
source of 240 volts, contact Studio Tech-
nologies for confirmation that a direct
connection can be made.
The Model 42 uses a 3-pin IEC 320 C14-
type inlet connector to mate with a detach-
able mains cord set. For units shipped to
North America and Japan a cord is sup-
plied that has a North-American (NEMA
15L) standard plug on one end and an
IEC 320 C13-type connector on the other.
Units bound for other destinations require
that the appropriate cord set be obtained.
The wire colors in the mains cord must
conform to the internationally recognized
color code and should be terminated
accordingly:
Connection Wire Color
Neutral (N) Light Blue
Line (L) Brown
Protective Earth (E) Green/Yellow
Safety Warning: The Model 42 does
not contain an AC mains disconnect
switch. As such, the AC mains cord
plug serves as the disconnection
device. Safety considerations require
that the plug and associated inlet
be easily accessible to allow rapid
disconnection of AC mains power
should it prove necessary.
As soon as AC mains power is applied,
the Model 42’s power present LED will
light. The unit is now fully functional.
Operation
There are no switches, potentiometers,
or user controls associated with the
Model 42. It’s designed for continuous
operation with no adjustment or mainte-
nance required. Proper operation will
take place as long as attention is paid
to the level presented on the audio inputs
and the loading placed on the IFB circuits.
Troubleshooting
If you’re having trouble getting the Model
42 up and running, this section may help.
If you haven’t read the previous sections
of this guide, you should do so before
proceeding.
If the Model 42 Doesn’t Work
At All
A source of AC mains power must be
connected to the Model 42. The unit is
a “universal input” type so that applying
anything between 100 and 230 volts,
50/60Hz is acceptable. Whenever mains
power is connected the front-panel