FLUKE 867B User 电路图.pdf

4822 872 00894 November 1997 , Rev. 3, 10/98 1997, 1998 Fluke Corporation. All rights reserved. Printed in the Netherlands. All product names are trademarks of their respective companies. 867B/863 Graphical Multimeter Users Manual RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 LIMITED WARRANTY 1000V CAT III (fixed distribution-level installations which can experience peak voltage transients up to 8000V.) Protection Class: II ss 1-1 Chapter 1 A Quick Tour Note The NiCd battery pack must be fully charged before using the 867B. See Chapter 3. Your Graphical Multimeter ACOMVmA/ AEXT TRIG A COMPONENT TEST SET UP mV V V OFF LOGIC HiZ FREEZE DISPLAY MODE SAVE PRINT MIN MAX RANGE WAKE UP HZ TOUCH HOLD 12345 mA A B A C E D rita0091.eps Figure 1-1. Graphical Multimeter Features F G rita0092.eps Figure 1-2. RS232 and AC Power Connections 867B/863 Users Manual 1-2 Table 1-1. Introducing Your Graphical Multimeter ITEMSYMBOLDESCRIPTION A j W TURN THE GMM ON BY ROTATING THE SELECTOR TO ANY FUNCTION. Turn the rotary selector to the AC Volts (v v) position. The input connections screen appears for a few seconds, then the screen sets up for this function, and you are ready to begin. You can toggle the backlight power level (Model 867B only) by pressing W. Also note that the screen goes dark if you do not change any controls for about 20 minutes and the GMM is on battery power; pressing W wakes up the screen (all models.) BCombo Meter View Trend THE SCREEN. In AC Volts, the initial screen presents a primary display of large digits, a secondary display of smaller digits, and a graphical window showing either a waveform or an analog NeedleGraph representation of the primary display. In addition, the upper screen line displays status information. The bottom screen line (immediately above the softkey labels) shows the display mode, range, and other information. For example, “Combo” appears on this line if a waveform appears in the graphical window: the GMM is in Combo Mode. C 1 2 3 4 5 THE SOFTKEYS. Most control settings (selector change or key press) change the softkey labels along the bottom of the screen. These labels define the present uses for the five blue keys that are positioned immediately below the screen. Together, the labels and the keys form a set of Softkeys. These changing softkey definitions allow direct access to a wealth of GMM capabilities. Refer to Figures 1-6, 1-7, and 1-8 at the end of this chapter for a roadmap to softkey use. A Quick Tour Your Graphical Multimeter1 1-3 Table 1-1. Introducing Your Graphical Multimeter (cont) ITEMSYMBOLDESCRIPTION D d F P M r H THE HARDKEYS. Hardkeys appear immediately below the softkeys. Hardkeys perform the same operations in all functions. Pressing W wakes up the screen from Sleep Mode (all models) and toggles the backlight power level on Model 867B. Although hardkeys can generally be pressed at any time, certain feature combinations are not allowed. The GMM test tool rejects any hardkey press that is not allowed; a long beep sounds. Chapter 4 explains each hardkey in detail. EV C X A a MEASUREMENT CONNECTIONS. Review the input connection scheme now only for familiarization: no actual connections are necessary during the Quick Tour. Volts, Ohms, Continuity, Conductance, Diode Test, Capacitance, and Component Test measurements use V for the Red lead. Amps measurements use A for the Red lead. mAA measurements use a for the Red lead. LOGIC Test measurements use X for the Red lead. All functions use C for the Black lead. Refer to Figure 1-3 for TL70A test lead connection views. FB LINE POWER OR BATTERY POWER. You can power the GMM with batteries or from ac line power through the Battery Eliminator. New alkaline (AA) cells provide a minimum of 4 hours operation. A fully charged BP7217 NiCd battery pack typically provides a minimum of 8 hours operation. The battery eliminator recharges the NiCd battery pack on Model 867B. Refer to Figure 1-4. GRS232 SERIAL PC OR PRINTER CONNECTION. Your GMM can use an optional optical serial interface cable to communicate with a PC or printer. Refer to Chapter 6. 867B/863 Users Manual 1-4 TL70A Test Leads rita0740.eps Figure 1-3. Test Leads and Measurement Connections A Quick Tour Your Graphical Multimeter1 1-5 Europe PN 942602US PN 942599 JP PN 942610 UK PN 942607AU NZ PN 944595 rita0770.eps Figure 1-4. Using the Battery Eliminator 867B/863 Users Manual 1-6 Table 1-2. A Practice Session STEPACTIONDESCRIPTION 1d CHANGE THE DISPLAY MODE With the GMM still in AC Volts, press first d, then 3 to change the display mode. The screen changes to the View Mode, where the entire screen is used for displaying a waveform. You can repeat this procedure to select any of the display modes available in AC Volts (Combo, Meter, View, and Trend.) Refer to Table 1-3 for an overview of display modes available in each function. Examples of all display modes (Combo, Meter, View, Trend, Logic Test, Auto Diode Test, Component Test, and Sleep) follow this table. Along with the flexibility provided by multiple softkey definitions, display modes increase the versatility of your GMM considerably. Many operations activated in one display mode are retained when you select a new mode. For example, “Rel”, “dB”, Min Max, range, and frequency measurement type are retained. 2 J CHANGE THE FUNCTION Rotate the selector to DC Volts (E). Observe that the display shifts back to Combo Display Mode. (This is the default mode, as established on the screen you see when you turn the selector to SET UP.) 31 USE THE SOFTKEYS With DC Volts and Combo Mode still active, you can use the DC Volts Softkeys. For example, press 1 to activate “Rel”: difference readings only are now displayed. Press 1 again to deactivate “Rel”. Explore all five softkeys in this fashion. Press a key first to activate a selection (label highlighted) and second to disable the selection. A Quick Tour Your Graphical Multimeter1 1-7 Table 1-2. A Practice Session (cont) STEPACTIONDESCRIPTION 4r CHANGE THE MEASUREMENT RANGE Press r to access the Range Softkeys, then press 2 to select a higher range (and activate “Manual” ranging.) Press 1 to switch back to “Auto” ranging, then press r to return to the DC Volts Softkeys. 5M ENABLE MIN MAX READINGS Press M to start displaying the maximum (“Max”), average (“Avg”), and minimum (“Min”) readings. Press M again to deactivate Min Max. 6H ENABLE TOUCH HOLD Press H to begin holding the last valid reading in the display, even if the test leads are withdrawn from the measurement point. h appears in the upper status line. Press H again to stop Touch Hold 7F CHANGE THE TYPE OF FREQUENCY DISPLAY Press F to access the Frequency Softkeys. The frequency reading (which was in the secondary display) and DC Volts reading (which was in the primary display) are swapped. The softkeys allow you to select different types of frequency measurements (Hz, Duty Cycle, Pulse Width, or Period). Press 4 to select “Period”, then press F again to return to the DC Volts Softkeys. Primary and secondary displays swap again, and the change to “Period” frequency measurement continues in the secondary display. 867B/863 Users Manual 1-8 Table 1-2. A Practice Session (cont) STEPACTIONDESCRIPTION 8PLOOK AT THE SAVE/PRINT SOFTKEYS Press P to access the Save/Print Softkeys. You can now use the softkeys to exercise various save, recall, and print features. Refer to Chapter 6 for more information. (Waveform save/recall is not available on Model 863.) 9 o TURN THE GMM OFF About This Manual This Quick Tour has introduced you to all the features necessary to use your GMM. If you are comfortable with this level of information, continue on to Chapter 2 for specific information keyed to each type of measurement. If you want more information about any of the features, refer to Chapters 3 through 8, as follows: Chapter 3: General descriptions of the GMM controls, screen, and input connections. Chapter 4: Complete instructions for using the hardkeys (d F P M r H). Chapter 5: View Mode and Trend Mode, in detail. Chapter 6: Save, Recall, and Print using P and Configuration Changes using SET UP. Chapter 7. User Maintenance (battery and fuse replacement, etc.) Chapter 8: Specifications Index A Quick Tour Combo Mode1 1-9 Combo Mode ComboMeterViewTrendExit Combo Mode presents both digital and graphical views of the measurement and can be used in VAC, VDC, mV DC, Amps, and mAA functions. Combo is the default mode in these functions. Meter Mode ComboMeterViewTrendExit Meter Mode presents both a digital reading and an analog position indication of the measurement. You can select Meter in VAC, VDC, mV DC, Ohms, Amps, and mAA functions; you can also set Meter on the SET UP screen as the default mode in these functions. Meter is the only mode available in Diode and Capacitance Test. View Mode ComboMeterViewTrendExit View Mode displays a full-screen waveform. It is available in VAC, VDC, mV DC, Amps, and mAA functions. Trend Mode ComboMeterViewTrendExit, Trend Mode presents a digital reading of the measurement and plots that reading over time. It is available in VAC, VDC, mV DC, Ohms, Amps, and mAA functions. 867B/863 Users Manual 1-10 Auto Diode Test Mode MeterExit Auto Diode Test presents a DC voltage reading and a symbol representing the state of the diode (forward, reverse, open, short, unknown.) Logic Test Mode LogicExit Logic Test shows icons representing high and/or low logic state along with frequency and voltage readings of logic activity. Component Test Mode Comp. TestExit Component Test displays a unique pattern representing the characteristics of the in-circuit component being tested. This signature can resemble a straight line for purely resistive components or an ellipsoid for frequency-sensitive components. Sleep Mode W restores the screen. Sleep Mode comes on automatically during battery operation if you do not press a key or turn the selector for approximately 20 minutes. A Quick Tour Sleep Mode1 1-11 Table 1-3. Functions and Display Modes FUNCTION vEeRDI i L c Combo Meter View Trend Auto Diode Logic Comp.Test 867B/863 Users Manual 1-12 ViewComboMeterTrendExit RelPeak Hold dB 150 RelPeak Hold dB 150 RelPeak Hold dB 150Hi Z RelPeak Hold dB 150 RelPeak Hold dB 150 DC see Table 2-1 for descriptions of these common labels. Other labels are unique for the selector position; these labels are defined in this chapter as needed. View and TrendGraph softkey labels are common for all functions that can use these modes; refer to Chapter 5 for a full discussion. Hardkeys Although hardkeys can generally be pressed at any time, certain feature combinations are not allowed. The GMM rejects any hardkey press that is not allowed and tells you so with a long beep. 867B/863 Users Manual 2-2 Table 2-1. Common Combo/Meter Mode Softkeys KEYFUNCTIONDESCRIPTION 1Rel Start relative readings in the primary display (REL is displayed). The relative reference (stored when “Rel” is selected) appears with the softkey. 2Peak Hold Peak Hold displays the highest and lowest peak values encountered in the present measurement function. These values replace either the secondary reading in Meter Mode or the graphical display in Combo Mode. 3rms Average Toggle between true “rms” (“rms” annunciator on in display) and “Average” (average responding, rms indicating - no annunciator) readings in any ac function. The rms/Average selection remains in effect until you change the selector position. The rms/Average settings made in one display mode are automatically made for other display modes in the same selector position. “Average” or “rms” can be set as the standard selection on the SET UP display. 3DC 600 is the standard value. You can change this value from the SET UP display. (Rotate the selector to SET UP, change the reference selection, then rotate the selector back to the original ac function.) Making Measurements Introduction2 2-3 Table 2-1. Common Combo/Meter Mode Softkeys (cont) KEYFUNCTIONDESCRIPTION 5Full Auto The GMM automatically selects range, trigger level, and time base (in VAC and VDC for an optimum display. If “Manual” is selected for Range in the SET UP screen, “Full Auto” does not come on. Selecting “Manual” from the Range Softkeys deselects “Full Auto”. 5 Hi ZEnter the high input impedance mode in mV DC. “Hi-Z” appears at the top of the display. Press again to return to “mV”. Activating “DC a beep then sounds each time the voltage drop passes below 0.7V (Continuity) or the logic activity indicator flashes (LOGIC Testing). A short circuit results in a continuous tone. If the reading goes above 30 volts, a possibly dangerous voltage exists on the inputs but is not displayed. Therefore, the safety indicator (l) lights. 867B/863 Users Manual 2-4 ACOMVmA /A EXT TRIG 1 4 3 FREEZE DISPLAY MODE SAVE PRINT MIN MAX RANGE WAKE UP HZ TOUCH HOLD 12534 V Red Circuit 2 rita0550.eps Figure 2-1. AC Volts Measurements Measuring AC Volts 6Turn the Selector to Volts AC. Display mode softkeys appear momentarily; press a softkey to select a new mode, or wait briefly to accept the presently highlighted selection. 7Connect the test leads as shown. 8Use the AC Volts Softkeys as discussed below. 9All hardkeys are available in Volts AC. At any time, press d and one of the softkeys (Combo, Meter, View, or Trend) to show the measurement in a different display mode. Making Measurements Measuring AC Volts2 2-5 Using the AC Volts Softkeys Combo or Meter Mode: refer to Table 2-1. RelPeak Hold rms Average dB 600 Full Auto View Mode: refer to Chapter 5. Time Base Trigger Single Shot Glitch Capture Full Auto Trend Mode: refer to Chapter 5. Enable RS232 Time Longer Time Shorter Trend Type Restart Trend 867B/863 Users Manual 2-6 FREEZE DISPLAY MODE SAVE PRINT MIN MAX RANGE WAKE UP HZ TOUCH HOLD 12534 V ACOMVEXT TRIG Red Circuit 1 4 3 2 mA/ A rita0560.eps Figure 2-2. DC Volts Measurements Measuring DC Volts 6Turn the Selector to Volts DC. Display mode softkeys appear momentarily; press a softkey to select a new mode, or wait briefly to accept the presently highlighted selection. 7Connect the test leads as shown. 8Use the DC Volts Softkeys as discussed below. 9All hardkeys are available in Volts DC. At any time, press d and one of the softkeys (Combo, Meter, View, or Trend) to show the measurement in a different display mode. Making Measurements Measuring DC Volts2 2-7 Using the DC Volts or mV DC Softkeys Combo or Meter Mode: refer to Table 2-1. RelPeak Hold DC press a softkey to select a new mode, or wait briefly to accept the presently highlighted selection. 7Connect the test leads as shown. 8Use the mV DC Softkeys as discussed above. 9All hardkeys are available in millivolts DC. At any time, press d and one of the softkeys (Combo, Meter, View, or Trend) to show the measurement in a different display mode. Making Measurements Measuring Ohms, Continuity, and Conductance2 2-9 ACOMVEXT TRIG 1 4 3 FREEZE DISPLAY MODE SAVE PRINT MIN MAX RANGE WAKE