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INSTRUCTION

MANUAL

Lecson Systems Limited

Burrel Road St.Ives Huntingdon Cambridgeshire
England PE17 4LE Telephone 0480 64124
TELEX 32562 Lecson G

Summary of Contents for Sfm2

Page 1: ...INSTRUCTION MANUAL Lecson Systems Limited Burrel Road St Ives Huntingdon Cambridgeshire England PE17 4LE Telephone 0480 64124 TELEX 32562 Lecson G ...

Page 2: ... Brown to Live line Blue to Neutral line Green Yellow to Earth Ground THE TUNER MUST NOT BE CONNECTED TO A TWO WIRE MAINS SYSTEM OR THE EARTH LEAD CUT BACK This wire forms an integral part of the SFM2 internal circuitry and screening a loud hum will therefore result if the unit is incorrectly earthed When used with the AC1 pre amplifier the two units should be wired separately to the mains supply ...

Page 3: ...unless the two AFC pins are connected externally Do not push in or pull out DIN plugs while the tuner is switched on The SFM2 is protected by a fuse located adjacent to the mains lead entry Replacement fuses must be of the correct type 20mm 1 amp anti surge Mains supply 220 240V only to the system is made through the 3 core lead supplied with the SFM2 It should be connected as shown in Figure 2 Th...

Page 4: ...s correctly tuned the LED glows If the Tuner is more than 40KHz from a station centre frequency the lamp will extinguish NOTE In Mute mode this lamp also indicates output Muted when extinguished 4 1 3 Signal Strength Indicator The signal strength indicator is composed of an array of 5 light emitting diodes that are progressively lit up as the signal strength increases When all 5 lamps are lit the ...

Page 5: ... Stereo Pilot Tone the tuner automatically reverts to the mono mode The centre position is STEREO BLEND which reduces the noise level when a stereo signal is received but at the expense of some stereo separation The third position is MONO When the switch is set at MONO it is not possible to receive any programmes in stereo Note that adequate reception of stereo programmes requires a much larger si...

Page 6: ...eo Separation 40 dB at 1KHz Audio Output a Up to 600mV RMS Variable b Up to 500mV RMS Fixed De emphasis 50uS or 25uS switchable 75uS for North America Pre set Stations 4 front panel adjustable pre sets with visual station indication on LED Tuning Array Other Facilities Automatic Frequency Control Blend Facility Switchable Mute Facility Signal Strength Level Indicator Tuning Indicator Accessory Out...

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