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                                    The LBO-516 is a 100 MHz oscilloscope
with all of the features normally found on a lab-grade scope: highfidelity
pulse response, stable operation, dual timebase with
calibrated sweep delay, flexible triggering facilities, and a bright
CRT display with illuminated internal graticule. Moreover, it also has
a very unusual feature found on few scopes in any price class: it can
simultaneously display up to eight traces from three different input
signals! In addition to the two vertical-input channels and their difference
signal, the signal used to externally trigger the main timebase
can also appear on the CRT display. The alternate sweep mode,
which allows the main and delayed timebases to simultaneously
sweep the CRT, effectively doubles this four-trace display to an
eight-trace display.
The comprehensive triggering facilities of the LBO-516 include
several features that ease the problem of triggering on complex
signals: a variety of frequency-selective coupling filters, a trigger
holdoff-control, and a trigger pickoff that alternates between the two
vertical channels.

Maintenance and Calibration

LBO-516 100 MHz
DELAYED TIME BASE OSCIILOSCOPE
TABLE OF CONTENTS
1. GENERALINFORMATION.......................................................................................................................................1
1-1 INTRODUCTION ...............................................................................................................................1
1-2 SPECIFICATIONS ..........….................................................................................................................................1
2. OPERATING INSTRUCTIONS.................................................................................................................................3
2-1 FUNCTION OF CONTROLS, CONNECTORS, AND INDICATORS .......................................................... 3
2-1-1 Display Block .......................................................................................................................................... 3
2-1-2 Vertical Amplifier Block ........................................................................................................................... 4
2-1-3 Sweep and Trigger Blocks ......................................................................................................................... 5
2-1-4 Miscellaneous .......................................................................................................................................... 7
2-2 INITIAL OPERATION ............................................................................................................................... 7
2-2-1 Power Connections and Adjustments ......................................................................................................... 7
2-2-2 Installation ............................................................................................................................................... 8
2-2-3 Preliminary Control Settings and Adjustments ........................................................................................... 8
2-3 BASIC OPERATING PROCEDURES ......................................................................................................... 9
2-3-1 Signal Connections .................................................................................................................................. 9
2-3-2 Single-trace Operation ..............................................................................................................................11
2-3-3 Triggering Alternatives ............................................................................................................................11
2-3-4 Probe Compensation ...............................................................................................................................14
2-3-5 Dual-trace Operation ...............................................................................................................................15
2-3-6 Additive and Differential Operation ..........................................................................................................16
2-3-7 Triple-trace Operation ..............................................................................................................................17
2-3-8 Four-trace Operation ...............................................................................................................................17
2-3-9 Delayed Timebase Operation ....................................................................................................................18
2-3-10 Single-shot Operation .............................................................................................................................20
2-3-11 X-Y Operation ......................................................................................................................................20
2-3-12 Intensity Modulation ..............................................................................................................................20
2-4 MEASUREMENT APPLICATIONS ...........................................................................................................21
2-4-1 Amplitude Measurements .........................................................................................................................21
2-4-2 Differential Measurement Techniques .......................................................................................................22
2-4-3 Time Interval Measurements ....................................................................................................................23
2-4-4 Phase Difference Measurements ...............................................................................................................24
2-4-5 Distortion Comparison .............................................................................................................................26
2-4-6 Frequency Measurements .........................................................................................................................27
2-4-7 Risetime Measurements ............................................................................................................................27
2-4-8 -3dB Bandwidth Measurement ..................................................................................................................28