Leader LBO-5860A Waveform Monitor- Fully Tested, Recently Calibrated

Description

The LBO-5860A is an NTSC Standard Definition waveform monitor that provides a precision ?oscilloscope type? display of composite video television signals. Its major uses include the monitoring and measurement of signal amplitudes of the both the whole and specific parts of the video signal, inspection of horizontal and vertical synchronization pulses, time-base measurements and measurement of amplitude and transient distortion within the NTSC video signal. Differential gain measurements are also possible. The unit provides for comparing input video signals with that of an external synchronization source for system timing calibration.
This waveform monitor is in excellent condition. The display is bright and well focused providing for an accurate measurement on the display. It has been fully checked out and recently calibrated. All switches and push buttons function as expected. All of the graticule lamps light up. This waveform monitor was only used only on a random basis and as such has accumulated relatively few hours of use. It was used in a clean environment. The outside case has very few scratches or signs of wear.
Features:
Recently calibrated for accurate display of the video signal?s vertical amplitude and horizontal time readings. Illuminated internal graticule for paralax-free observation.
Display graticule is calibrated in both IRE units (left) and percentage of modulation (right).
Two Loop-through inputs for channel A or B for phase and amplitude matching purposes.
Provision for external sync with loop-through connections for the sync feed.
Flat, IRE and chroma/differential-gain filters (front panel switch selectable) for linearity checks and measurement of differential gain.
Push button selection of 2H, 1µS/div, 2V Mag and 2V time bases.
DC restorer on/off. Clamps accurately to back porch of H sync.
Line selection for display of lines 14 to 21 of field 1 or 2 provided to observe signals inserted into the Vertical blanking interval.
TTL strobe output to key the companion Leader LVS-5850 Vectorscope for vector display of the selected line in the vertical interval.
Video-out jack provides a buffered video output feed of selected signal under observation.
Provision for external connections to alter the time base to provide RGB or YRGB display.
Included Accessories
Factory box with interior factory Styrofoam packing material
Carrying handle (already installed on top of the device)
RGB/YRGB Input adapter for the MT socket (9 pin) on rear the panel
Spare power fuse.
Operation Manual (includes the following): 1) Operation Instructions, 2) Schematics, 3) Printed circuit board diagrams, 4) Electric and mechanical parts list, 5) Detailed internal alignment procedures
Specifications:
CRT: 140 mm rectangular
Accelerating Potential: 7 kvolts/2 kvolts
Viewing Area: 10 cm x 8 cm
Beam Rotator: Adjustable from front panel
Graticule: Internal with scale illumination.
Vertical Section:
Flat: 25 Hz to 3.6. MHz < ±2%; 3.6 MHz to 5 MHz +2% to - 5% of response at 50 kHz
LUM(IRE): Based on response per 1958 IRE STD 23 S-1 (IEEE STd 205) attenuation at 4.43 MHz more than 22 dB
Chroma Response at 3.58 MHz band pass filter ±2%/Flat
Diff. Gain: Gain increased 3 to 5.5 times against Chroma
Full Scale: 140 IRE (sync 40 IRE plus video 100 IRE)
Transient Response:     ±2 IRE at 1 volt Full Scale, Flat (using sine squared pulse and bar signal)
Tilt (Vertical Window): ?2%
Deflection Accuracy:    1 volt Full Scale, 140 IRE units ? ±2% 4 volts Full Scale, 140 IRE units ?±4%
Variable Range: for 140 IRE units display 1 volt Full Scale 0.25 volt or less to 1 volt 4 volts Full Scale 1 volt or less to 4 volts
Maximum Input Voltage: ±5 volt DC (1 volt, 4 volts Full Scale)
Input:     2 input terminals on rear panel (A or B switchable from front panel)
Input Impedance: at 1 volt Full Scale: 15 k ohm paralleled with 50 pF; at 4 volts Full Scale: 60 k ohm paralleled with 50 pF
Video Output: 1 volt ±15% on rear panel at 1 volt (or 4 volts) added to input A or B Full Scale 1 volt (or 4 volts)
Frequency Response: 25 Hz to 5 MHz ±5%
Impedance: 75 ohm
Horizontal Section:
2H Sweep: displays 2 lines of video signal
1 µS/div Sweep: expanded 2-line display 10 times 2V Sweep: displays 2 fields
2V MAG Sweep: expanded 2-fields 20 times Linearity: 3% or less
RGB/YRGB:  RGB input is connected for standard (YRGB input is optional)
Staircase Input: 10 volts ±15% for 9 div displacement
Maximum Staircase Input: 12 volts p-p (DC plus AC)
Time Base: RGB (3 steps)/YRGB (4 steps)
2H Sweep: display 1 H
2V Sweep: display 1 V
Sweep Length: RGB: about 30% of normal sweep
YRGB: about 22% of normal sweep Control Signal: 12 volts to 15 volts between pins 4 (pos) and 5 (neg)
RGB/YRGB Input: MT socket (9 pins) on rear panel
DC Restoration
Clamp Time: back porch
Calibrator
Frequency: 32 kHz
Amplitude: 1 volt ±1%
External Sync
Input: 2 input terminals on rear panel (loop-through)
Input Impedance: 15 k ohm
Input Sensitivity: 1.5 volts to 5.5 volts composite sync will synchronize sweeps
Maximum Input Voltages: ±8 volts