Studio Technologies AN-2 - Manual (Page 5)

AN-2 User Guide Issue 3
Studio Technologies, Inc. Page 7
appropriate plug attached. The wire colors
in the line cord conform to the internation-
ally recognized CEE color code and should
be wired accordingly.
Connection Wire Color
Neutral (N) Light Blue
Live (L) Brown
Earth or Ground (E) Green/Yellow
Audio Signal Connections
The input and output connectors of the
AN-2 are 3-pin XLR type. The input is
female and the outputs are male. Shielded
cable should be used when making connec-
tions. Proper phasing is very important if
you want to be able to remix the simulated
stereo back to mono. If the AN-2 is to be
used with unbalanced equipment, pins 1
and 2 of the outputs must be shorted to-
gether at the connectors which plug into
the back of the unit.
Operating Level
The AN-2 is shipped from the factory con-
figured for input and output levels of
+4dBm. The unit can be set for –10 or
8dBm operation.
Use with –10dBm Semi-Pro
Equipment
If you wish to use the AN-2 with –10dBm
equipment, a special switch setting must be
made.
1) Disconnect the power cord.
2) Remove the top cover (two Phillips-head
screws on each side panel).
3) Locate the 4-position DIP switch on
the circuit board (slightly to the right of
center and labeled SW1).
4) For use with a –10dBm input, set
switches 3 and 4 to the OFF position.
5) To achieve a –10dBm output, set
switches 1 and 2 to the OFF position
and short pins 1 and 2 of the output
connectors together.
To return the unit to +4dBm operation,
place all the switches in the ON position
and unshort pins 1 and 2 of the output
connectors.
Conversion to +8dBm Level
For input and output levels of +8dBm, a
qualified technician must remove and re-
place seven resistors on the AN-2 circuit
board. Refer to the schematic for parts
values and locations. It is important that the
new resistors be 1% tolerance. A resistor
kit for –8dBm conversion is included with
the unit.
Operation
Using the Controls
There are seven controls and one meter on
the front panel of the AN-2.
The Power switch controls AC power to the
unit.
The Gain control allows you to control the
input level, which is especially useful if you
are using a multi-track tape recorder which
lacks a gain control of its own. The peak-
reading meter (labeled “Level” on the front
panel of the unit) monitors the overall gain
structure. The gain control should be set so
that the meter’s yellow and green LEDs are
lit in the presence of a signal, with the red
LED lighting only on signal peaks. Attention