B&K Precision 2190B Manuel d'instructions Page 1

100 MHz DUAL-TRACE OSCILLOSCOPEBK PRECISION+®INSTRUCTIONMANUALMODEL 2190BBK PRECISION+®

10. CH1 AC-GND-DC Switch. Three-position leverswitch with the following positions:AC:Channel 1 input signal is capacitively coupled; dccomponent is

HORIZONTAL CONTROLS20. Main Time Base TIME/DIV Control. Provides stepselection of sweep rate for the main time base. Whenthe VARiable Sweepcontrol is

TV-H:Used for triggering from television horizontal syncpulses. Also servesas hi-pass (lowfrequency reject)trigger coupling.LINE:Signal derived from i

OPERATING INSTRUCTIONSSAFETY PRECAUTIONSWARNINGThe following precautions must be ob-served to help prevent electric shock.1. When the oscilloscope is

OPERATING TIPSThe following recommendations will help obtain the bestperformance from the oscilloscope.1. Always use the probe ground clips for best r

3. To view both waveforms simultaneously, set theVERTical MODE switch to DUAL and select eitherALT (alternate) or CHOP with the PULL CHOPswitch.4. In

Trigger SOURCE SwitchThe trigger SOURCE switch (CH 1, CH 2, etc.) selectsthe signal to be used as the sync trigger.1. If the SOURCE switch is set to C

permitted. The HOLDOFF control allows this period to beextended by a variable amount if desired.This control is usually set to the MIN position (fully

3. Shift the percentage of the display that is occupied bythe main sweep by adjusting the DELAY TIMEPOSition control. Counterclockwise rotation caus

MAINTENANCEWARNINGThe following instructions are for use byqualified service personnel only. To avoidelectrical shock, do not perform any serv-icing o

TEST INSTRUMENT SAFETYWARNINGNormal use of test equipment exposes you to a certain amount of danger from electrical shock becausetesting must often be

CALIBRATION CHECKA general check of calibration accuracy may be made bydisplaying the output of the CAL terminal on the screen.This terminal provides

APPENDIXIMPORTANT CONSIDERATIONS FOR RISE TIMEAND FALL TIME MEASUREMENTSError in Observed MeasurementThe observed rise time (or fall time) as seen on

LIMITED WARRANTYB+K Precision Corp. warrants to the original purchaser that its product, and the component parts thereof, will be free fromdefects in

INFORMATIONOne of the best tutorials on oscilloscopes in the industry. Valuable to those with little knowledgeof oscilloscopes as well as the experien

© 2000 B+K Precision Corp.481-314-9-001 Printed in Taiwan+®1031 Segovia Circle, Placentia, CA 92870

This symbol on oscilloscope means “refer to instruction manualfor further precautionary information”. This symbol appears in themanual where the corre

TABLE OF CONTENTSPage PageTEST INSTRUMENT SAFETY . . . . . . inside front coverFEATURES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FEATURESLOW COST, HIGH PERFORMANCEB+K Precision Model 2190B is one of the most economi-cal 100 MHz analog oscilloscopes on the market, yet it hasall o

AUTO SweepSelectable AUTO sweep provides sweep without trig-ger input, automatically reverts to triggered sweepoperation when adequate trigger is appl

SPECIFICATIONSCRT:Type: 6-inch rectangular with integral graticule,P31 phosphor.DisplayArea: 8 x 10 div (1 div = 1 cm).Accelerating Voltage: 12 kV.Pho

Trigger Coupling:AUTO: Sweep free-runs in absence ofsuitable trigger signal.NORM: Sweep triggered only by adequatetrigger signal.TV-V: Video vertical

CONTROLS AND INDICATORSGENERAL FUNCTION CONTROLS1. ON Indicator. Lights when oscilloscope is “on”.2. POWER Pushbutton. Turns oscilloscope “on” and“off