Equipment information

EICO Electronic Instrument Co. Inc. 435 Oscilloscope
EICO Electronic Instrument Co. Inc.
Model: 435
Date: 1964
Category: Measurement instruments
Group: Oscilloscope
Description: DG Wideband Oscilloscope

PHYSICAL & ELECTRICAL FEATURES a. Half the weight, a third the size of conventional 5-inch CRT Oscilloscopes — truly portable for color tv service on location. b. Weight and size reduction achieved without loss in performance or serviceability. Much sharper trace than in conventional 5-inch CRT 'scopes, plus flat CRT face for full utilization of screen area, offsets reduced screen size to give equal or better resolution. Professional calibre interior packaging of components demonstrates the possibility of compactness without crowding or loss of access to any component. c. DC to 4. 5Mc response (+1, -3db) of vertical Amplifier needed for color and black-and- white tv servicing. Push-pull amplification throughout minimizes distortion. Direct-coupled design eliminates low-frequency phase shift or response fall-off, and also provides zero reference to permit true voltage readings at any point on waveform. d. Zener-diode controlled voltage calibration source, with output voltage adjustment potentiometer, provides a precise and unvarying 200mv p-p square wave calibration voltage at line frequency for dc or ac voltage measurement. e. Trace is extremely Sharp and bright, and is free of "blooming"· Accelerating potential is 1600 volts. Mu-metal neck shield minimizes effect of external fields. f. Distortionless V & H trace expansion, and drift-free V & H positioning, up to many times screen diameter. g. Automatic sync limiter and Amplifier eliminates sync voltage adjustment. h. Full retrace blanking. i. Edge-lit calibration grid on green filter screen, with illumination level controlled by potentiometer at rear. 1-2. CONTROL FEATURES & FACILITIES a. Four-position, frequency-compensated vertical input decade attenuator, plus a calibration position at which the calibration voltage described in 1-ld is fed in by-passing the decade attenuator. Concentric vertical gain control is effective in all positions including the calibration position. Slide switch selects either direct-coupling (dc) or capacitive-coupling (ac). DC balance control can be adjusted with a screwdriver through a hole on the left side of the cabinet. b. Horizontal sync/input selector permits selection of (+) or (-) internal, external, and line frequency sync of the internal sweep, or either external or line frequency input to the horizontal Amplifier. Concentric horizontal gain control. c. Sweep range selection from 10 cps to lOOkc in four overlapping ranges, plus pre-set TV-V and TV-H sweep positions (30 cps and 7875 cps). Concentric sweep vernier. d. Vertical positioning, horizontal positioning, intensity and focus controls on panel. Astigmatism control can be adjusted with a screwdriver through a hole on the left side of the cabinet. e. Sawtooth (sweep) output on panel; intensity modulation input at rear.

These manuals are available for the above equipment:

Manual Type: Service and User Manual Eico-7749-Manual-Page-1-Picture
Pages: 26
Size: 10.76 Mbytes (11285063 Bytes)
Language: english
Quality: Scanned document, all readable.
Upload date:
MD5: 223ecc36ab96f5ffd16332636dd6bf9e
Downloads: 626 since 18 February 2016

Instruction Manual


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