Lab.gruppen fP Series FP 6400 User Manual

Also see for FP 6400: Brochure Specifications

Contents

Lab.gruppen fP Series FP 6400 User Manual Manual pdf 14 page image

T= `lkkb`qflkp=TKN= fåéìí=ÅçååÉÅíáçåë=TKNKN= _~ä~åÅÉÇ=áåéìíë=The XLR input connectors are electronically balanced, and wired according to the IEC 268 (pin 2 =“hot”), and wired in the following way:PIN 1 GROUND/SHIELDPIN 2 HOT (+)PIN 3 COLD (-)Figure 4: XLR input connector Figure 5: XLR balancedWithin the Neutrik® Combojack there is a ¼”(6.3mm) phone jack wired in parallel with the XLR.TIP HOTRING COLDSLEEVE GROUND/SHIELDFigure 6: ¼” TRS plugThe input impedance is high enough (20 kohms balanced) toallow ”daisy-chaining”, or multiple parallel inputconnections. The headroom of the input circuits is also greatenough to accept the maximum output level from virtuallyany low-level signal source. Balanced signals are lesssensitive to AC hum and radio interference. The sourceimpedance should be less than 1 kohms to avoid highfrequency loss in long cables.To daisy-chain amplifiers, use the XLR-male connector provided on each channel, labeled “Link”. Theyare connected in parallel with the Neutrik® Combojack on each input.TKNKO= råÄ~ä~åÅÉÇ=áåéìíë=To connect an unbalanced input source, connect pins 1 and 3 in the cable’s XLR plug (ring and sleeve in aTRS plug). If you leave a pin disconnected, you will lose 6dB.A better method for using unbalanced sources is shown in figure 8. This is similar to the connection forbalanced lines, but pin 3 is connected to the shield at the source end of the cable. The hum and noiserejection for the cable is equivalent to that of a balanced line. To minimize hum in the audio signal, usebalanced inputs whenever possible.Figure 7: Unbalanced line connection Figure 8: Balanced line with unbalanced equipmentFor 2-channel (stereo) operation, use both channels A and B. For tandem stereo or bridged monooperation, use only one of the inputs. See “Operation Modes” (page 7) for more details.i~ÄKÖêìééÉå== = = = = = ========================NPrëÉê=j~åì~ä===Ñm=SQMM======sÉêëáçå=NKN========OMMPJNMJMO=