Orban OPTIMOD-AM 9300, Руководство по эксплуатации

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OPTIMOD-AM DIGITAL INSTALLATION
2-11
The 9300 has balanced inputs.

All equipment circuit grounds must be connected to each other; all equipment
chassis grounds must be connected together.

In a low RF field, cable shields should be connected at one end only — prefera-
bly the source (output) end.

In a high RF field, audio cable shields should be connected to a solid earth
ground at both ends to achieve best shielding against RFI.
Power Ground

Ground the 9300 chassis through the third wire in the power cord. Proper
grounding techniques never leave equipment chassis unconnected to pow-
er/earth ground. A proper power ground is essential for safe operation. Lifting a
chassis from power ground creates a potential safety hazard.
Circuit Ground

To maintain the same potential in all equipment, the circuit (audio) grounds
must be connected together.

In high RF fields, the system is usually grounded through the equipment rack in
which the 9300 is mounted. The rack should be connected to a solid earth
ground by a wide copper strap — wire is ineffective at RF frequencies because of
the wire’s self-inductance.

The 9300’s chassis and circuit grounds are internally connected. There is no
ground lift switch.
A ground lift switch should never be necessary on any piece of equip-
ment connected entirely via balanced I/O.
9300 Front Panel

Screen Display labels the four soft buttons and provides control-setting infor-
mation.

Screen Contrast button adjusts the optimum viewing angle of the screen dis-
play.

Four Soft buttons provide access to all 9300 functions and controls. The func-
tions of the soft buttons change with each screen, following the labels at the
bottom of each screen.