4
EN
5
Configuration
Each channel of the IT-8400 is factory set to the 100 volt configuration. To change the configuration for any channel, access the wire connections on
the back side of the panel. Make changes to the wiring configuration before installing the accessory into the rack.
The center section of printed circuit board contains text that identifies the channel numbers and terminal voltages alongside the associated wire
connection points. Use these as a guide to wire configuration. Also refer to the figures below.
100 VOLT LINE
Connect the blue wire to the terminal marked
0V
.
Connect the yellow wire to the terminal marked
70/100V
.
Connect the orange wire to the terminal marked
NOT USED
.
70 VOLT LINE
Connect the blue wire to the terminal marked
0V
.
Connect the orange wire to the terminal marked
70/100V
.
Connect the yellow wire to the terminal marked
NOT USED
.
25 VOLT LINE
Connect the orange wire to the terminal marked
0V
.
Connect the yellow wire to the terminal marked
70/100V
.
Connect the blue wire to the terminal marked
NOT USED
.
Amplifier settings: To minimize transformer saturation, use the amplifier’s
75 Hz input filters. We also recommend using the clip limiters in most
applications. See the CX302 user’s manual for instructions on configuring
filters and clip limiters.
Connecting the amplifier to the IT-8400 accessory
Turn off the amplifier before opening the safety shroud over the output barrier strip or making any changes to the output connections. Always close
the safety shroud when you finish working on the output connections and before turning the amplifier on. Use fully insulated wiring that conforms
with local and national electrical and safety codes. Class 2 wiring for this application is specified by the 1999 National Electrical Code, which is
prevalent in the United States. Codes in your location may vary.
Four terminal block plugs are provided with the IT-8400. These plugs are made to accept wire sizes from 24 AWG (0.2 mm
2
) to 10 AWG (6 mm
2
).
Note: Use wiring suitable for a Class 2 circuit.
Prepare the wires for the terminal block by removing 3/8
"
to 1/2
"
(9.5 mm to
12.7 mm) of insulation. To install the wire, loosen the screw on the terminal
and push the end of the wire into the rectangular opening. Tighten the screw
until the wire is secure in the connector (screw torque should be between 0.7
Nm and 0.8 Nm).
Install the amplifier wiring into the large terminal block plugs provided. The
plugs install into the accessory with the terminal screws oriented down. The
plugs for the wiring from the amplifiers are installed into the connectors
labeled INPUT. Refer to the label on the panel for channel and polarity
assignments. Wire the terminal assigned to the channel’s positive (+) input to
the speaker output labeled positive (+) on the back of the amplifier.
Likewise, wire the plug’s negative (-) terminal to the negative (-) connection on the back of the amplifier. Repeat this for the other amplifier and
accessory channels.
B = Blue
O = Orange
Y = Yellow
3/8" - 1/2"
