2-6
INSTALLATION
ORBAN MODEL 8300
Input and Output Connections
Cable
We recommend using two-conductor foil-shielded cable (such as Belden 8451 or
equivalent) for the audio input and output connections because signal current flows
through the two conductors only. The shield does not carry signal and is used only
for shielding.
Connectors
Input and output connectors are XLR-type connectors.
In the XLR-type connectors, pin 1 is CHASSIS GROUND, while pin 2 and
pin 3 are a balanced, floating pair. This wiring scheme is compatible with
any studio-wiring standard: If pin 2 or 3 is considered LOW, the other pin
is automatically HIGH.
Analog Audio Input
Nominal input level between –14 dBu and +8 dBu will result in normal operation
of the 8300.
(0 dBu = 0.775Vrms. For this application, the dBm @600
scale on volt-
meters can be read as if it were calibrated in dBu.)
The peak input level that causes overload is +27.0 dBu.
The electronically balanced input uses an ultra low noise and distortion differen-
tial amplifier for best common mode rejection, and is compatible with most pro-
fessional and semi-professional audio equipment, balanced or unbalanced, hav-
ing a source impedance of 600
or less. The input is EMI suppressed.
Input connections are the same whether the driving source is balanced or unbal-
anced.
Connect the red (or white) wire to the pin on the XLR-type connector (#2 or #3)
that is considered
H
IGH
by the standards of your organization. Connect the black
wire to the pin on the XLR-type connector (#3 or #2) that is considered
L
OW
by
the standards of your organization.
In low RF fields (like a studio site not co-located with an RF transmitter), connect
the cable shield at 8300 input only—it should not be connected at the source
end. In high RF fields (like a transmitter site), also connect the shield to pin 1 of
the male XLR-type connector at the 8300 input.
Summary of Contents for 8300J
Page 1: ...Operating Manual OPTIMOD FM 8300 Digital Audio Processor Version 2 1 Software...
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Page 260: ...6 42 TECHNICAL DATA ORBAN MODEL 8300 8300 RS232 BOARD PARTS LOCATOR...
Page 262: ...6 44 TECHNICAL DATA ORBAN MODEL 8300 8300 POWER SUPPLY PARTS LOCATOR...
Page 264: ...6 46 TECHNICAL DATA ORBAN MODEL 8300 8300 I O BOARD PARTS LOCATOR...
Page 270: ...6 52 TECHNICAL DATA ORBAN MODEL 8300 DSP BOARD PARTS LOCATOR DRAWING 32170 000 14...
Page 278: ...6 60 TECHNICAL DATA ORBAN MODEL 8300 8300 DISPLAY BOARD PARTS LOCATOR...
Page 279: ...OPTIMOD FM DIGITAL TECHNICAL DATA 6 61 DISPLAY BOARD...