Fluke PM3370B QUERY MEASUREMENT QM

6 - 26 THE CPL PROTOCOL

QUERY MEASUREMENT QM

Purpose:

To obtain measurement data from an oscilloscope.

If the V (Value) parameter is specified, one measured value will be returned.

If the L (Logging) parameter is specified, an infinite number of measured values

will be returned. Cancelling is possible by sending the ASCII character ESC.

If no V or L parameter is specified, one measured value is returned, preceded by

its type, and concluded by its suffix.

Note: If averaging is on, the values will be averaged over the number of

average counts.

Command:

"V" only the numerical value of the measurement result is returned

"L" the numerical values of an infinite number of measurement

results is returned; cancelling is possible by sending ASCII

character ESC (= 27 decimal)

n decimal number, specifying the type of measurement to perform

(see table on next page)

"QM" n "V" CR

"L"

Contents

Main IMPORTANT Page MAIN FEATURES Page INITIAL INSPECTION INSIDE THIS MANUAL CONTENTS 1 OPERATORS SAFETY 2 INSTALLATION INSTRUCTIONS 3 GETTING STARTED 4 HOW TO USE MORE ADVANCED FUNCTIONS OF THE INSTRUMENT 5 FUNCTION REFERENCE 6 THE CPL PROTOCOL FUNCTION INDEX (see Chapter 5) INDEX Page FRONT PANEL CONNECTIONS REAR PANEL CONNECTIONS OPTIONAL REAR PANEL CONNECTIONS 1 OPERATORS SAFETY 1.1 INTRODUCTION 1.2 SAFETY PRECAUTIONS 1.3 CAUTION AND WARNING STATEMENTS 1.4 SYMBOLS 1.5 IMPAIRED SAFETY PROTECTION 1.6 MEASURING EARTH 2 INSTALLATION INSTRUCTIONS 2.1 SAFETY INSTRUCTIONS Page 2.2 MEMORY BACK-UP BATTERIES 2.3 THE FRONT COVER 2.4 HANDLE ADJUSTMENT AND OPERATING POSITIONS OF THE INSTRUMENT Figure 2.2 Instrument positions 2.5 IEEE 488.2/IEC 625 BUS INTERFACE OPTION 2.6 RS-232-C SERIAL INTERFACE 2.7 RACK MOUNTING 2.8 VERSIONS 3 GETTING STARTED 3.1 FRONT-PANEL LAYOUT Figure 3.1 Front panel layout 3.2 SWITCHING ON THE INSTRUMENT 3.3 SCREEN CONTROLS Figure 3.2 Screen control area 3.4 AUTO SETUP NOTE: If you get lost when adjusting your instrument, just press AUTOSET. 3.5 MODE SWITCHING BETWEEN ANALOG AND DIGITAL OPERATING MODES Figure 3.4 Analog-Digital switching setup 3.6 VERTICAL SETUP Figure 3.5 Vertical setup Page Page 3.7 TIMEBASE SETUP Figure 3.6 Timebase setup Page 3.9 DIRECT TRIGGER SETUP Figure 3.7 Direct trigger setup Page 3.10 PRE-TRIGGER VIEW 3.11 MORE ADVANCED FEATURES Figure 3.8 Menu keys and softkeys 3.12 CURSOR OPERATION Figure 3.9 Cursor setup Page 3.13 MORE ADVANCED TRIGGER FUNCTIONS Figure 3.10 More advanced trigger setup 3.14 MORE SIGNAL DETAIL WITH THE DELAYED TIMEBASE Figure 3.11 Delayed timebase setup Page 3.15 TRACE STORAGE Figure 3.12 Digital memory setup Page 4 HOW TO USE MORE ADVANCED FUNCTIONS OF THE INSTRUMENT 4.1 INTRODUCTION Page FRONT PANEL LAYOUT Page 4.2 DISPLAY AND PROBE ADJUSTMENTS RECALL STANDARD SETTING DISPLAY ADJUSTMENT Page MENUS TEXT OFF CAL SIGNAL AND PROBE ADJUSTMENT 4.3 ANALOG AND DIGITAL MODES Page ANALOG TO DIGITAL MODE SWITCHING TRACE STORAGE RUN/STOP 4.4 VERTICAL DEFLECTION 2 1 VERTICAL COUPLING AC, DC, GND VERTICAL POSITION VERTICAL AMPLITUDE VERTICAL AUTO RANGE VERTICAL VARIABLE AMPLITUDE VERTICAL CH1+CH2 VERTICAL INVERT VERTICAL MENU BANDWIDTH LIMITER VERTICAL MENU 50 VERTICAL PROBE RANGE INDICATOR 4.5 HORIZONTAL DEFLECTION AND TRIGGERING TIMEBASE TIME/DIV TIMEBASE AUTO RANGE TIMEBASE MAIN TB VAR Page TIMEBASE X POS TRIGGERING TRIGGER SOURCE TRIGGER SLOPE TRIGGER TRIGGER LEVEL TRIGGER TRIGGER POSITION TRIGGER SINGLE SHOT 4.6 DIGITAL ACQUISITION AND STORAGE 4.7 ADVANCED VERTICAL FUNCTIONS ACQUIRE AVERAGE For maximum ease of use, the scope offers direct access to the important average feature. ACQUIRE ENVELOPE ACQUIRE PEAK DETECTION 4.8 ADVANCED HORIZONTAL AND TRIGGER FUNCTIONS TRIGGER MODE TRIGGER LEVEL TRIGGER MODE TRIGGERED TRIGGER MODE ROLL TRIGGER LINE 4.9 MEMORY FUNCTIONS TRACE STORAGE CLEAR & PROTECT TRACE STORAGE SAVE TRACE STORAGE CLEAR TRACE STORAGE COPY TRACE STORAGE RECALL TRACE STORAGE SAVING MULTIPLE TRACES TRACE STORAGE RECALLING MULTIPLE TRACES 4.10 CURSORS FUNCTIONS CURSORS ON/OFF CURSORS TIME CURSORS VOLT CURSORS AMPLITUDE & TIME CURSORS READOUT CURSORS READOUT T-RATIO/PHASE 4.11 MEASUREMENT FUNCTIONS MEASURE MEAS1-PKPK MEASURE MEAS1-RMS MEASURE MEAS 2-FREQ MEASURE DELAY MEASURE CURSOR LIMIT MEASURE TOUCH, HOLD & MEASURE COMMAND 4.12 PROCESSING FUNCTIONS MATHEMATICS FILTER MATHEMATICS MULTIPLY 4.13 DISPLAY FUNCTIONS ANALOG DISPLAY X-DEFL Page DIGITAL DISPLAY X versus Y DIGITAL DISPLAY VERT MAGNIFY control to make any adjustments to the Y position. DIGITAL DISPLAY INTERPOLATION DIGITAL DISPLAY WINDOWS 4.14 DELAYED TIMEBASE DELAYED TIMEBASE MainTB and DeldTB DELAYED TIMEBASE DELAY DELAYED TIMEBASE TIMEBASE DELAYED TIMEBASE TRACE SEP DELAYED TIMEBASE TRIGGER Page DELAYED TIMEBASE TRIGGER LEVEL DELAYED TIMEBASE COUPLING 4.15 HARD COPY FACILITIES SET STANDARD UTILITY PRINT SETUP UTILITY PLOT SETUP 4.16 AUTOSET AND SETUP UTILITIES SET STANDARD AUTOSET STANDARD AUTOSET USER PROGRAMMABLE SETUPS Page SETUP TEXT LABEL SETUP RECALL A SEQUENCE AUTOCAL OTHER FEATURES 5 FUNCTION REFERENCE ACQUISITION LENGTH * ADD INVERT SUBTRACT ADD (MATHEMATICS) 5 - 6 FUNCTION REFERENCE CPL: QW (Command to query a waveform). Refer to Chapter 6 for full details ALT/CHOP ..... ANALOG MODE ..... AUTO RANGE AUTOSET AUTOSET SEQUENCE AUTOSET USERPROG FUNCTION REFERENCE 5 - 13 CPL: AS (Command for an Auto Setup) Refer to Chapter 6 for full details. AVERAGE BANDWIDTH LIMITER CALIBRATION AUTOCAL CHANNEL/TRACE SELECTION CONFIDENCE CHECK CURSORS Page Page CURSORS READOUT Page DELAY Page DELAY MEASUREMENT DELAYED TIMEBASE (DELD TB) Page DIGITAL MODE DISPLAY MENU Page 5 - 32 FUNCTION REFERENCE ENVELOPE EXTERNAL TRIGGER (2 CHANNELS MODELS ONLY) FILTER GLITCH TRIGGER HOLD OFF 5 - 38 FUNCTION REFERENCE Using HOLD OFF to suppress double triggering. HOLD OFF Control to adjust MAIN TB hold off time. INPUT ATTENUATOR MANUAL + AUTOMATIC AMPL INPUT COUPLING INPUT IMPEDANCE (200 MHZ MODELS ONLY) LOGIC TRIGGER (4 CHANNELS MODELS ONLY) Page MAGNIFY HORIZONTAL **** MAGNIFY VERTICAL MAIN TIMEBASE MANUAL + AUTOMATIC sns MATHEMATICS MEASURE MENU Page MULTIPLY ( Page PEAK DETECTION POSITION POWER SUPPLY PRINTING AND PLOTTING Page Page 5 - 56 FUNCTION REFERENCE PROBE UTILITIES REMOTE CONTROL IEEE 488.2 REMOTE CONTROL RS-232 Page RUN/STOP SCREEN CONTROLS AND GRATICULE SCREEN MESSAGES Page Page SETUPS Page SETUPS SEQUENCE STANDARD SETUP / FRONT PANEL RESET Note: Error messages appear in the CRT viewing area when incorrect commands are given. STATUS SCREEN SUBTRACT (MATHEMATICS) TEXT OFF TIMEBASE MODES Page TIME MEASUREMENTS Page Page TOUCH, HOLD & MEASURE MODE TRIGGER COUPLING 5 - 80 FUNCTION REFERENCE TRIGGER DELD TB TRIGGER LEVEL Page TRIGGER MAIN TB Page TV TRIGGER Note: A trigger edge can not be selected Page USERTEXT Page UTIL MENU UTILITY SCREEN & SOUND VOLT MEASUREMENTS Page Page FUNCTION REFERENCE 5 - 95 CPL: QM (Command to query a measurement) Refer to Chapter 6 for full details. X-DEFLECTION (X-DEFL, X vs Y) FUNCTION REFERENCE 5 - 97 6 THE CPL PROTOCOL 6.1 INTRODUCTION * 6.2 EXAMPLE PROGRAM FRAME * 6.3 COMMANDS IN FUNCTIONAL ORDER 6.4 COMMANDS IN ALPHABETICAL ORDER 6.5 COMMAND REFERENCE NAME NM AUTOSET AS Note: The <acknowledge> will be sent after the AUTOSET has been fully completed. ARM TRIGGER AT CALIBRATE CL DEFAULT SETUP DS Note: The <acknowledge> is sent after the completion of the change to the default setups. GO to LOCAL GL GO to REMOTE GR IDENTIFICATION ID Note: The items in the identity string are separated by a ;(ASCII 59) Page LOCAL LOCKOUT LL PROGRAM COMMUNICATION PC Page PROGRAM SETUP PS Note: The <acknowledge> is sent after the setup has been completed. PROGRAM TEXT PT Table 6.1 Character code table for oscilloscopes. Page PROGRAM WAVEFORM PW Page Page THE CPL PROTOCOL 6 - 25 Example program: QUERY MEASUREMENT QM Note: If averaging is on, the values will be averaged over the number of average counts. Notes: Delta T can only be obtained, if X-Deflection is off. Delta X can only be obtained, if X-Deflection is on. FFT only when MATH+ option is availlable. Page QUERY PRINT QP Page QUERY SETUP QS Page QUERY TEXT QT Page QUERY WAVEFORM QW Page THE CPL PROTOCOL 6 - 37 Example: Page Page Page RESET INSTRUMENT RI Note: <acknowledge> will be sent after the Reset has been completed RECALL SETUP RS Note: <acknowledge> will be sent after the internal setup has been completed. SAVE SETUP SS STATUS ST * * * TRIGGER ACQUISITION TA 6.6 ACKNOWLEDGE * * * 6.7 STATUS Page 6.8 SETUP Page Page ACQUIRE MENU STRUCTURE A - 1 Appendix A ACQUIRE menu structure DIGITAL MODE: B - 1 CURSORS menu structure Appendix B CURSORS menu structure ## # ## # ## DISPLAY MENU STRUCTURE C - 1 Appendix C DISPLAY menu structured ANALOG MODE: DIGITAL MODE: D - 1 MATHEMATICS MENU STRUCTURE Appendix D MATHEMATICS menu structure * Page F - 1 DTB (DELD TB) menu structure Appendix F DTB (DELD TB) menu structure Page H - 1 SETUPS MENU STRUCTURE Appendix H SETUPS menu structure TB MODE MENU STRUCTURE J - 1 Appendix J TB MODE menu structure EXT DIGITAL : ANALOG: K - 1 TRIGGER menu structure Appendix K TRIGGER menu structure DIGITAL MODE: ANALOG MODE: 1) 1) trigger gap 0.50 div TRIGGER menu structure K - 2 Page Page M - 1 VERTICAL MENU STRUCTURE Appendix M VERTICAL menu structure Appendix N RS-232 Cable confi g urations 1 OSCILLOSCOPE 1 PRINTER/PLOTTER OSCILLOSCOPE CONTROLLER Appendix P Page Page FUNCTION INDEX (see Chapter 5) Page INDEX A B C D E F G H I L M O P R S T