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MAXIMU

M

PERFORMANC

E

INDICATO

R

MI3

Summary of Contents for MI-3

Page 1: ...MAXIMUM PERFORMANCE INDICATOR MI3 ...

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Page 3: ...al By rotating or repositioning your FM antenna it is possible to reduce the multipath reception The Ml 3 Maximum Performance Indicator makes it easy to know when the FM antenna is oriented for the best reception of any station To show multipath reception the Ml 3 displays instantaneous signal strength versus frequency deviation Signal strength is shown as vertical deflection of the indicator disp...

Page 4: ...ic voltage regulator The operating voltages from these supplies are carefully regulated over a wide range of power line variations This design feature assures a steady indicator trace despite changing line voltage For multipath display the horizontal deflection voltage is obtained from the tuner discriminator output ahead of the de emphasis network This voltage is proportional to the frequency dev...

Page 5: ...nce in front of mounting panel including knobs 1 inches TUBE AND SEMICONDUCTOR COMPLEMENT 1 3RP1 3 inch cathode ray tube 4 6EA8 horizontal and vertical deflection amplifiers 1 6EA8 electronic voltage regulator 2 OB2 voltage regulators 1 Selenium rectifier high voltage rectifier 6 Selenium rectifiers low voltage supply 4 silicon planar transistors WEIGHT Chassis only 23 pounds In shipping carton 30...

Page 6: ...entered on the indicator screen VERTICAL POSITION This control moves the indicator trace up or down With the Scope Test switch in TEST posi tion the indicator trace can be easily moved to the correct vertical position For multipath display the trace is positioned at the bottom reference point For audio indications the trace is positioned at the center reference point This shift in position occurs ...

Page 7: ...amplifier or power amplifier The left channel audio signal voltage causes vertical deflection of the indicator trace This input jack is in parallel with the left audio output jack LEFT AUDIO OUTPUT This output jack is in parallel with the left audio input jack This parallel connection makes it convenient for connecting a pre amplifier or tuner output to both the Ml 3 and the power amplifier RIGHT ...

Page 8: ... the heads are pulled half of their thickness into the wood 6 Fasten the shelves to the mounting brackets Use two fillister head screws in the A holes for each shelf 7 Place the template over the mounting screws The screws should be centered in the A and B holes on the template The PAN LOC shelves should match the vertical dash lines on the template 8 Remove the plastic protective covering from th...

Page 9: ...the Ml 3 Connect a 3 foot long low loss shielded cable from the MR65B TP No 2 Test Point No 2 on rear of tuner chassis to the Deviation horizontal Input on the Ml 3 CONNECTING TO MclNTOSH MX 110 TUNER PREAMPLIFIER WITH Z OR X SERIAL NUMBERS Connect a 3 foot low loss shielded cable from the MX 1 1 0 TP No 1 Test Point No 1 jack on top of the tuner chassis to the Signal Strength vertical Input on th...

Page 10: ...cal Input on the Ml 3 Connect a 3 foot low loss shielded cable from the MULTIPLEX OUTPUT jack on the tuner to the Deviation horizontal Input on the Ml 3 Connect a low loss shielded cable from the discriminator output ahead of the de emphasis network to the Deviation horizontal Input on the Ml 3 Adjust the SIGNAL STRENGTH vertical Multipath control on the back panel until the pattern on the indicat...

Page 11: ...tion Turn the tuner tuning dial to the desired FM station either stereo or monophonic Observe the trace pattern on the Ml 3 indi cator screen If the pattern is uniform and relatively smooth little or no multipath is present If the pattern is irregular with verti cal traces multipath is present The height of the trace above the base line indicates the relative signal strength of the station being r...

Page 12: ...10 TYPICAL HOOK UP ...

Page 13: ...a display of a system that it is out of balance Precise balance assures you a full wall of sound The Ml 3 gives you a visual indication of the balance of your stereo system You check and cor rect the output balance of your stereo cartridge tape recorder tuner or any other stereo source connected to your stereo system It is easy to know when your stereo system is In balance when you use an Ml 3 Her...

Page 14: ...e mechanical and electrical workmanship ponents damaged by improper use nor does it and components of this equipment to be free of extend to transportation to and from the factory 3 YEAR FACTORY SERVICE CONTRACT An application for a FREE 3 YEAR FACTORY SERV Mclntosh Laboratory only the services offered under ICE CONTRACT is included in the pocket in the back the standard 90 day guarantee will appl...

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Page 16: ...MclNTOSH LABORATORY INC 2 CHAMBERS ST BINGHAMTON N Y 13903 607 723 3512 Design sub ecl to change without notice Printed In U S A Be102002 ...

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