Orban 5950 Technical Manual Installation 2-9
PC Control
The OPTIMOD 5950 can be controlled via a web browser pointed at the address assigned to it. All system controls
are accessible there.
Racking the 5950
The 5950 is designed to fit in a standard 19’ (inch) rack. While the 5950 is robust and can be used in situations that
are extreme, it is best that 1 rack space be left free above and below the processor to allow air to circulate.
The 5950 requires three standard rack units (5 inches / 12.7 cm). There should be a good ground connection
between the rack and the 5950 chassis—check this with an ohm meter to verify that the resistance is less than
0.5:. Mounting the unit over large heat-producing devices (such as a vacuum-tube power amplifier) may shorten
component life and is not recommended. Ambient temperature should not exceed 45qC (113qF) when equipment
is powered. Equipment life will be extended if the unit is mounted away from sources of vibration, such as large
blowers and is operated as cool as possible.
Using the power cable supplied (or equivalent), the 5950 should be energized. It cannot be stressed enough that
Orban Labs recommends the 5950 be energized via an Uninterruptable Power Supply (UPS) to prevent sudden
swings in voltage that may damage equipment. This isn’t required because of a design flaw in the 5950 itself, it is
good engineering practice to ensure all mission critical equipment is protected. The 5950 input voltage is 100-240
VAC 50-60Hz, making the unit universal electrically.
Once the 5950 has booted, it’s now time to apply audio to the processor. This portion of the manual will discuss
the various input features available to you and your 5950.
Cable
Orban recommends 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.
Analog Audio Input
Nominal input level between –14dBu and +8dBu will result in normal operation of the 5950. Analog inputs require
an XLR type MALE connector.
x (0dBu = 0.775Vrms. For this application, the dBm @600: scale on voltmeters can be read as if it were
calibrated in dBu.)
x The peak input level that causes overload is +27.0dBu.
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