Operating instructions

2-8
INSTALLATION ORBAN MODEL 9400
An RS-232 (PC Remote) Computer Interface, labeled S
ERIAL PORT, is provided to
connect the 9400 to IBM PC-compatible computers, directly or via modem, for re-
mote control, metering and software downloads.
A Remote Interface Connector allows you to connect the 9400 to your existing
transmitter remote control or other simple contact-closure control devices. The 9400
remote control supports user-programmable selection of up to eight optically iso-
lated inputs for any one of the following parameters: recalling any factory- or user
presets, tone or bypass modes, selecting stereo modes for AM and HD processing
(stereo, mono-left, mono-right, mono-sum), selecting analog, digital or digital+J.17
input, and clock synchronization. (See Remote Control Interface Programming on
page 2-46.) The 9400 remote control accepts a DB-25 connector.
A valid signal is a momentary transition
from no-current to current flowing through
the particular remote signal pins. Current must flow for at least 50ms for the signal
to be interpreted as valid. It is acceptable to apply current continuously to an input,
DC or AC. Do not exceed 12 volts unless you use an external current-limiting resistor
that limits current to 10mA. Voltage is available at this connector to facilitate use of
contact closures.
The Ethernet Port accepts a 10Mb/second or 100Mb/second Ethernet connection
terminated with an RJ45 connector.
Digital AES3 Input and Outputs are provided to support two-channel AES3-
standard digital audio signals through XLR-type connectors.
Analog Inputs and Outputs are provided to support left and right audio signals
through XLR-type connectors.
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.