QSC USL JSD-60, Руководство пользователя

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7. Installation
7.1 INITIAL POWER UP
A quick power-up test of the JSD-60 is suggested before mounting it in the equipment rack and
wiring it up. This test can quickly detect shipping or other damage.
•
Turn the AC power switch off.
•
Using the supplied AC line cord or one appropriate for the installation location (the power
supply is a universal input supply 100-240 VAC, 50/60 Hz), connect the JSD-60 to the AC
mains.
• Connect the supplied 12 VDC bypass power supply to the bypass power input on the rear
panel of the JSD-60 and plug it in to the AC line. The front panel “Bypass Mode” LED should
flash, the bypass power LED should light, and one of the format buttons should light.
• Press each of the format buttons and the mute button, one after another. The appropriate
button should light.
•
Rotate the fader in each direction and verify that the fader level on the display changes.
•
Turn on the AC power switch. All the green power LEDs on the bottom right of the front
panel should light. The “Bypass Mode” LED should stop flashing.
•
Press each of the format buttons and the mute button, one after another. The appropriate
button should light and the display should show the selected format. Note that the format
button LEDs for digital formats will flash when no digital input is provided.
•
Press the mute button verifying that its LED toggles each time the button is pressed.
•
Rotate the fader in each direction verifying that the fader numbers on the display change
7.2 SYSTEM HARDWARE MOUNTING, GROUNDING AND VENTILATION
The JSD-60 is designed to mount in a standard 19 inch (482.6 mm) rack and is one rack unit high
(1.75 inches, 44.45 mm). The JSD-60 should be mounted at about eye level in the equipment
rack for optimum display contrast and visibility. We recommend vented panels (USL part
number VP-1) above and below the JSD-60 whenever space permits. Mounting the unit
immediately above a major heat-producing component, such as a power amplifier, is not
recommended. Equipment mounted immediately above the JSD-60 should not be more than
9 inches (225 mm) deep to ensure adequate airflow through the top cover ventilation holes on
the JSD-60. The JSD-60 includes a three-prong grounding plug and a three-wire power cord to
accommodate a safe ground path from the chassis to the electrical system ground. Defeating
this ground by removing the ground prong is not recommended.