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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
1. GENERAL INFORMATION
1-1. INTRODUCTION
1-2. SPECIFICATIONS
The LBO-516, shown in Figure 1-1, is a 100 MHz oscilloscope Specifications for the model LBO-516 oscilloscope are given in
with all of the features normally found on a lab-grade scope: high- Table 1-1.
fidelity pulse response, stable operation, dual timebase with
calibrated sweep delay, flexible triggering facilities, and a bright Table 1-1
CRT display with illuminated internal graticule. Moreover, it also has SPECIFICATIONS
a very unusual feature found on few scopes in any price class: it can Vertical Amplifiers (Ch. 1 & 2)
simultaneously display up to eight traces from three different input
signals! In addition to the two vertical-input channels and their differ- Bandwidth (-3 dB)
ence signal, the signal used to externally trigger the main timebase DC coupled DC - 100 MHz
can also appear on the CRT display. The alternate sweep mode, AC coupled 10 Hz - 100 MHz
which allows the main and delayed timebases to simultaneously Rise Time 3.5 KS
sweep the CRT, effectively doubles this four-trace display to an Deflection Coefficients
eight-trace display.
The comprehensive triggering facilities of the LBO-516 include Accuracy 5 mV/div to 5 V/div in 10 calibrated
several features that ease the problem of triggering on complex steps, 1-2-5 sequence. Continuously
signals: a variety of frequency-selective coupling filters, a trigger variable between steps. XI0
holdoff-control, and a trigger pickoff that alternates between the two magnification adds 0.5, 1, and 2
vertical channels. mV/div steps for frequencies below 5
MHz
Input Impedance -+3%; -+5% with Xl0magniflca-tion
1 megohm +-2%, 25 pF +-3 pF
Maximum Input Voltage 400 V (DC plus AC peak)
1
Signal Delay Leading edge displayed. Modes Auto, Normal, Single-shot
Leading edge displayed. CH-1 only, CH-2 only, Coupling AC, DC, HF reject, TV vertical, TV
CH-1 & CH-2 displayed alternately, horizontal
CH-1 & CH-2 chopped (at 250 Slope + or-
kHz rate), Holdoff Normal, Variable (to greater than
CH-1 & CH-2 added, CH-1 & one sweep), B ends A
CH-2 subtracted, Sensitivity
CH-1 & CH-2 & CH-3 displayed Internal Trigger DC ◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo