DRAKE DA7543 Руководство по установке - Страница 2

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Internal Jumper Settings

RETURN PATH PROGRAMMING

There are three internal jumpers to be set. J1, J2, and J3. J1 and J3

program the signal path for the return path. If the return amplifier is desired

(20 dB gain), select the active return setting. This is the factory default. If a

unity gain return path is desired, select the passive return settings. If no

return path is desired, remove both J1 and J3. Jumper J2 is used to enable

DC power to the return amplifier. When selecting the active return, Jumper

J2 must be installed. If using the passive return or no return, remove

Jumper J2.

INTERNAL JUMPER SETTINGS -

1) Unplug amp from the AC power source.

2) Remove top cover by loosening (but not removing) the 12 top cover

screws. Slide the top cover so the screws will slip through the larger screw

hole openings, then remove top cover.

A) JUMPER SETTINGS FOR ACTIVE RETURN PATH (Factory Setting)

POWER LED

JUMPER INSTALLED

B) JUMPER SETTINGS FOR PASSIVE RETURN PATH

POWER LED

JUMPER NOT IN-

STALLED

C) REMOVE ALL THREE JUMPERS FOR NO RETURN

RETURN PATH GAIN

ADJUSTMENT

RETURN PATH GAIN

ADJUSTMENT