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Manual de usuario Adcom, modelo GFP-750
Resumen del manual
SEE NEC SECTION 810-21 (1) DO NOT ATTEMPT SERVICING OF THIS UNIT YOURSELF. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. NOTE TO CATV SYSTEM INSTALLER This reminder is provided to call the CATV system installer's attention to Article 820-22 of the National Electrical Code that provides guidelines for proper grounding and, in particular, specifies that the cable ground shall be connected to the grounding system of the building, as close to the point of cable entry as practical. 1. PRODUCT DESCRIPTION 1.1. GFP-750 Front Panel Diagram & Remote Control 1.2. GFP-750 Rear Panel Diagram balanced CD input » top is L channel m unbalanced inputs « bottom is R channel I tape ^ p processor ^ ç unùal outputs ^ ^ i>a/artceW Avis: Usque de choc ek Xnque-ne pas hoc electrique. ne pas expos © О Ol expose this egu/pm nt to ram or moisture. ' cet appareil a la pluie с [I 01 © (lB © Tiùai11 AH/h (Ü)) CD Balanced Inputs (II) Gold Jumpers QD Unbalanced Stereo Inputs 5|) Tape Loop Stereo In/Out (m) External Processor Loop Stereo In/Out (15) Main 1 and Main 2 Unbalanced Stereo Outputs (16) Main 3 Balanced Stereo Outputs © Remote Control Infrared repeater outputs (x 2) QD Remote Control Sensor Input Master On/Off Switch AC Power Cord Socket Switched AC Outlet 1.3. Product Features (T) Stereo/Reverse/Mono Switch This switch is used to change the polarity of the input signal in relation to the output signal. The stereo setting allows normal playback of the input signal. The reverse setting inverts the phase of the input signal. The mono setting combines both channels for a monaural input signal or where speaker placement does not accommodate stereo playback. (T) Input Selection The input selection knob has a digital interface that senses movement of the knob. The knob appears to turn freely as the interface detects the direction the knob is being turned and indexes through the input sources accordingly. To go from aux 2 to tuner or from tuner to aux 2, you must index back through the other input sources. (T) Passive This features allows the active gain stages of the preamp to be bypassed. (A slight drop in volume level is expected when this feature is engaged.) This feature has no effect when the processor feature is engaged. (T) Power On/Off The GFP-750 is turned on by pressing either the remote control power button or toggling the front panel power switch. The LED above the power switch will come on indicating the unit is on. (The power status LED will glow slightly dimmer when the unit is muted.) © Processor Switch Engages the processor loop when activated. See (14| for further information. GO Balance Control The GFP-750 balance control feature provides finer balance adjustment allowing for greater balance accuracy and will not entirely mute either channel. (7) Infrared Remote Control Sensor Lens This lens protects the infrared receiver which receives commands from the remote control. The pathway between the lens and remote control must be free of obstructions for the remote control to operate the GFP-750. [8) Volume Control The front panel volume control knob is motorized. It may be adjusted either by hand or by the volume buttons on the remote control. The volume knob’s groove always indicates the present volume level. The volume control knob may be used to reduce the volume level while the GFP-750 is muted without deactivating the mute feature. (¥) Mute The GFP-750’s mute feature is engaged by pressing the mute button on the remote control. This feature fully mutes the outputs. To deactivate the mute feature, press the mute button again or either of the two volume buttons on the remote control. (Turning the front panel volume knob will not deactivate the mute feature.) (10) Balanced CD Inputs Before using the balanced CD inputs, it is necessary to remove the gold jumpers located between pins 1 and 3 in both connectors. (See the figure to the right.) When switching from balanced CD inputs to unbalanced CD inputs, you must replace the jumpers between pins 1 and 3 as shown. || DO NOT USE BOTH BALANCED AND UNBALANCED CD INPUTS AT THE SAME TIME.^ © Gold Jumpers When using the unbalanced CD inputs, jumpers must be installed to short pins 1 and 3 of the balanced input jacks. © Unbalanced Stereo Inputs gold jumpers Connect the various outputs from each signal source to these unbalanced stereo inputs. Do not connect both the unbalanced and balanced CD inputs at the same time. See the section labeled CONNECTIONS for further information regarding these inputs. 3 © Tape In/out The tape outputs are fixed level outputs. The signal is selected by the input source knob or input...
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