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Fluke 8845-8846

1. None Checking Diodes The diode function sends a current through a semiconductor junction while the Meter measures the voltage drop across the junction or junctions Measurements are displayed in the 10 V range at a relatively fast measurement rate OPEN is displayed for voltages 10 above the compliance voltage setting Typical junction voltage drop on good junctions are 0 3 to 0 8 volts If enabled the beeper will make a short beep when a good junction is detected Shorted diodes will indicate a significantly lower voltage With the higher compliance voltage up to 10 V the Meter s diode test function can test zeners up to 10 volts diode stacks and LEDs The selectable current and maximum voltage allows you to tailor the diode test to the expected voltage for the junction being tested To check a diode 1 Press twice on the 8846A or once on the 8845A An example of the diode test display is shown below et ee n m e m e a e a a m g e a e a a e m m e a e a E i iw Yo ima EJ eRe BGB EJ E caw13f eps 2 Select the test voltage and current appropriate for the diode being tested by pressing the associated soft keys 3 Connect the test leads as shown in Figure 4 8 INPUT SENSE VO de awn caw024 eps Figure 4 8 Diode Testing Connections Function modifiers None 4 16 Making Measurements Making a Triggered Measurement Four so
2. Temperature Frequency 24 Hour 90 Days 1 Year Coefficient C Hz 23 1 C 23 5 C 23 5 C outside 18 to 28 C Range 1 Part of 10 A range 2 Available only on front panel connectors 3 400 mA available in software version 1 0 700 18 or greater only 400 mA continuously 550 mA for 2 minutes on 1 minute off maximum crest factor 3 1 at 400 mA specification for current above 329 mA is typical Introduction and Specifications 1 Electrical Specifications 8845A Accuracy Accuracy is given as measurement of range Temperature Frequency 24 Hour 90 Days 1 Year Coefficient C Hz 23 1 C 23 5 C 23 5 C outside 18 to 28 C 1 Part of the 10 A range 2 Available only at front panel connectors Range 3 400 mA available in software version 1 0 700 18 or greater only 400 mA continuously 550 mA for 2 minutes on 1 minute off maximum crest factor 3 1 at 400 mA specification for current above 329 mA is typical Additional Low Frequency Errors Error is stated as of reading Frequency AC Filter 3HZ slow 20HZ medium 200HZ fast 10 20 Hz 0 0 25 20 40 Hz 0 0 02 40 100 Hz 0 0 01 0 55 100 200 Hz 0 0 0 2 200 Hz 1 kHz 0 0 0 02 gt 1kHz 0 0 0 Frequency Gate TMS OE EE EE OE OE Programmable to 1 s 100 ms and 10 ms Measurement Method sesse ee ee ke Flexible counting technigue AC coupled input using the ac vo
3. 200 C 0 001 C 0 06 0 09 0 0025 100 C 0 001 C 0 05 0 08 0 002 0 C 0 001 C 0 04 0 06 0 002 100 C 0 001 C 0 05 0 08 0 002 300 C 0 001 C 0 1 0 12 0 002 600 C 0 001 C 0 18 0 22 0 002 Additional Errors Digits NPLC Additional NPLC Noise Error 6 100 0 C 6 10 0 C 5 1 0 03 C 5 0 2 0 12 C 4 0 02 0 6 C Continuity Continuity Threshold Selectable between 1 Q and 1000 Q Fest CUMGM AA OE 1 mA Response TIME ss es ede ER ESE SR ee ae as ann 300 samples sec with audible tone Accuracy is given as measurements of range Temperature Coefficient C Outside 18 to 28 C 0 001 0 002 1 Year 23 5 C 24 Hour 90 Days 23 1 C 23 5 C 1000 0 Q 0 002 0 01 0 008 0 02 0 01 0 02 1 21 8845A 8846A Users Manual Diode Test Test GUNMEN ici OO OR cect 100 pA or 1 mA Response Time sees ee ee ee Re ee 300 samples sec with audible tone Accuracy is given as measurements of range 24 Hour 90 Days 1 Year EE 23 1 C 23 5 C 2345 C onside 18 to 38C 5 0000 V 0 002 0 002 0 008 0 002 0 01 0 002 0 001 0 002 10 0000 V 0 002 0 001 0 008 0 002 0 01 0 002 0 001 0 002 Measurement Rates IEEE488 4 Function Digits Setting Integration Time Measurements Second 60 Hz 50 Hz 8845A 8846A DC Volts DC Current and 6 100 NPLC 1 67 2 s 0 6 0 5 0 6 0 5 Resistance 6 10 NPLC 167
4. Connecting an External Trigger The TRIG I O jack on the Meter s rear panel is used to connect to an external trigger signal The falling edge of a TTL signal will trigger the Meter to start taking measurements if the Meter is in external trigger mode Figure 4 9 indicates the purpose of the three pins in the TRIG I O connector TRIG VO ANE Pin 1 Trigger In Pin 3 Measure Complete Out Pin 2 Signal Ground caw059 eps Figure 4 9 TRIG I O Pin out Description Monitoring the Measurement Complete Signal In addition to being a trigger input the TRIG I O jack on the Meter s rear panel also provides a signal indicating the completion of a measurement cycle A falling edge of a TTL signal indicates a measurement cycle is complete See Figure 4 9 above to identify which pins on the TRIG I O connector are used to sense the measurement complete signal Appendices Appendix A 2X4 Test Leads B Errors C RS 232 Port Connections D 8845A 8846A Users Manual Appendix A 2X4 Test Leads Introduction The optional Fluke TL2X4W test leads simplify making 4 wire ohms measurements by integrating the HI HI Sense and LO LO Sense test leads into one cable The Meter s Input HI and LO jacks consist of two contacts One contact is connected to HI or LO input circuits and the other contact is connected to the Sense input circuits Like the input jacks the 2x4 test lead also has two contacts that align with the inpu
5. Press the STORE LUSE soft key The Meter labels the first four soft keys with the first four memory locations CONF IGUI through COMP 1G04 The fifth soft key is labeled MORE to allow access to all 100 memory locations Front Panel Operation 3 Controlling Trigger Functions 4 To store the present Meter configuration in one of the first four memory locations press the appropriate soft key If you want to store the present Meter configuration in a location other than the first four locations press the HORE soft key The display indicates the next available memory location If all configuration memory locations are filled the Meter will always indicate memory location 10 5 To adjust the display to the desired memory location press either 4 or to select a specific digit With the digit selected press the soft key labeled to decrement the digit or to increment the digit 6 With the preferred memory location set press the EMTEF soft key to store the Meter configuration Storing the Power up Configuration To store the Meter s present configuration as a power up configuration 1 Press memory 2 Press the STORE COMF IG softkey 3 Press the STORE FOWER LF softkey The Meter configuration stored as a power up configuration will be set whenever the Meter is powered on Note LAN port remote settings address hostname DHCP mask etc are saved separately when selected in each instrument and are not i
6. With the Meter powered up plug a test lead into the V PHAEM connector 2 Press 9 J 3 Insert the other end of the test lead into the 400 mA input connector If the fuse is good the Meter will read less than 200 Q If the fuse is blown the Meter will read siierioad 4 Remove the probe from the 400 mA connector and insert into the 10 A connector 2 5 8845A 8846A Users Manual If the fuse is good the Meter will read less than 1 Q If the fuse is blown the Meter will read ower load To replace the Current Input fuses 1 Turn the Meter off unplug the power cord from the Meter and remove all test leads 2 Turn the Meter on its back 3 Unscrew the retaining screw on the fuse access door as depicted in Figure 2 2 4 Remove the protective cover from the fuse holders by slightly depressing the back edge of the cover to unlatch it from the printed circuit board Pull up on the back edge of the cover and remove it from the fuse compartment 5 Remove the defective fuse and replace with one having the appropriate rating 6 Replace the protective cover by pushing it over the fuses while aligning the catches with the holes in the printed circuit board Press the cover down until the catches engage the printed circuit board 7 Replace the fuse door and secure it by tightening the retaining screw Bottom front left corner caw020 eps Figure 2 2 Replacing the Current Input Fuses 2 6 Preparing th
7. memory Accessories Table 1 5 lists the available accessories for the 8845A and 8846A Table 1 5 Accessories 8845A 8846A Users Manual Table 1 5 Accessories cont Introduction and Specifications 1 General Specifications Table 1 5 Accessories cont 1259340 Agreement Calibration Accredited 2441827 Agreement Calibration primary standards lab 1540600 Agreement Calibration artifact General Specifications Power Voltage 100 V Setting 0 eee ee ee ee Ee ee Re ee Re ee ee 90 V to 110 V 120V Setting RE EE OE 108 V to 132 V 220 V Setting is ENE ES BERE EER SEE SE Vee Ns 198 V to 242 V 240 V Setting is EE EEN ERGE ER Re GER Eg 216 V to 264 V FregueNCY ie esse sesse ee ee ee ee ee ed 47 Hz to 440 Hz Automatically sensed at power on Power Consumption c cccceeeeeeeeeeeeeeeeeeeeeeee 28 VA peak 12 Watt average Dimensions 88 mm 3 46 in 217 mm 8 56 in 297 mm 11 7 in 3 6 kg 8 0 Ib Shipping Weight 5 0 kg 11 0 Ib Display Vacuum Fluorescent Display dot matrix Environment Temperature Operating use deer ENE ee Nee ge RE Ee de 0 C to 55 C ole AE EE NE 40 C to 70 C Warm Up 1 hour to full uncertainty specifications Relative Humidity non condensing BEUR OE EE N 0 C to 28 C lt 90 28 C to 40 C lt 80 40 C to 55 C lt 50 Storage RR EE EE EE an 40 C to 70 C lt 95 Altitude Operating 2 000 Meters Slade a re Ee a Ee 12 000
8. meter To make a four wire resistance measurement using four test leads 1 Connect the test leads to the Meter s input connectors as shown in Figure 4 2 2 Press Making Measurements 4 Measuring Resistance 0 217384MQ Zu zagu F1 F2 Fs Fa Fs caw031 eps 3 If not already highlighted as shown above press the 44T EE soft key to switch toa four wire measurement caw023 eps Figure 4 2 Input Connections for 4 wire Resistance Measurements To make a four wire resistance measurement using Fluke s 2X4 test leads 1 Connect the test leads to the Meter s input connectors as show in Figure 4 3 2 Press 9 3 If not already highlighted press the 544 TRE soft key 8845A 8846A Users Manual INPUT SENSE awn Ground tab caw060 eps Figure 4 3 Input Connections for 4 wire Ohms Using 2x4 Wire Leads Function modifiers 1 FLTE A filter for quieting noisy measurments This filter averages readings to reduce reading noise when in immedicate trigger mode or when in trigger mode with an unending number of triggers selected The filter is only available for dc functions at rates slower than 1 PLC The number of readings averaged by the digital filter varies with dc function and range A FLTE A 3 pole analog filter for improving noise immunity The filter is active when this soft key s label is highlighted Refer to the
9. ore OD CAME ce mi STOF SAMFLES ED EO amp amp caw03 eps The minimum maximum average and standard deviation is displayed along with the number of measurements the statistics were calculated on 8845A 8846A Users Manual Stopping Measurement Collection There are two methods of stopping the collection of measurements for the statistics function To manually stop the measurement collection press the amp TOF soft key from the statistics menu The display will update with the final set of statistical data The process can also be stopped automatically by entering the number of samples on which you want to calculate statistics To enter the number of statistic samples 1 While in the statistics function press FEAMNFLES To select the digit to adjust press the soft key labeled either or gt With the desired digit selected press the soft key labeled to decrement the digit or to increment the character 2 Press EM TEF to set the number of samples Note Setting the number of samples to zero will cause the Meter to collect samples continuously Testing Using Limits The limits function provides Pass Fail testing to user specified upper and lower limits The upper and lower limits are stored in volatile memory and will be set to zero when the Meter is first turned on or the meter receives a reset through the remote interface Changing the function will also set the limits to ze
10. 0 0005 0 008 0 001 0 01 0 001 0 0006 0 0001 Introduction and Specifications 1 Electrical Specifications 8845A Accuracy Accuracy is given as measurement of range Temperature 24 Hour 90 Days 1year Coefficient C 23 1 C 23 5 C 23 5 C ouside 18 aoa T 100 Q 0 003 0 003 0 008 0 004 0 01 0 004 0 0006 0 0005 0 002 0 0005 0 008 0 001 0 01 0 001 0 0006 0 0001 Additional Ohms Errors Digits NPLC Additional NPLC Noise Error 6 100 0 of range 6 10 0 of range 5 1 0 001 of range 5 0 2 0 003 of range 47 mQ 4 0 02 0 017 of range 15 mQ DC Current Input Protection see ee ee ee ke Tool accessible 11 A 1000 V and 440 mA 1000 V fuses limits of 400 mA continuous 550 mA for 2 minutes on 1 minute off Common Mode Rejection ee ee ee ee 140 dB at 50 or 60 Hz 40 1 1 kQ unbalance Normal Mode Rejection n s 60 dB for NPLC of 1 or greater with analog filter off and power line freguency 40 1 100 dB for NPLC of 1 or greater with analog filter on and power line freguency 40 1 Analog Filter EE EE EE Ge ee ee EE er ie When using the analog filter specifications are relative to within one hour of using the ZERO function for that range and NPLC setting Input Characteristics Range Resolution Resolution Shunt Resistance Burden Voltage 4 Digits 5 Digits 6 Digits Ohms 10
11. 2 0 02 1 0 0 02 1 0 0 03 1 0 0 03 0 1 0 003 5 10 Hz 0 35 0 02 0 35 0 03 0 35 0 03 0 035 0 003 10 Hz 20 kHz 0 04 0 02 0 05 0 03 0 06 0 03 0 005 0 003 20 50 kHz 0 1 0 04 0 11 0 05 0 12 0 05 0 011 0 005 50 100 kHz 0 55 0 08 0 6 0 08 0 6 0 08 0 06 0 008 100 300 kHz 4 0 0 50 4 0 0 50 4 0 0 50 0 2 0 02 1000 V 1 0 0 015 1 0 0 0225 1 0 0 0225 0 1 0 00225 5 10 Hz 0 35 0 015 0 35 0 0225 0 35 0 0225 0 035 0 00225 10 Hz 20 kHz 0 04 0 015 0 05 0 0225 0 06 0 0225 0 005 0 00225 20 50 kHz 0 1 0 03 0 11 0 0375 0 12 0 0375 0 011 0 00375 0 55 0 06 0 6 0 06 0 6 0 06 0 06 0 006 100 300 kHz Il 4 0 0 375 4 0 0 375 4 0 0 375 0 2 0 015 1 Typically 30 reading error at 1 MHz 2 1000 Volt range is limited to 8 X 10 volt Hertz 50 100 kHz UI 8845A Accuracy Accuracy is given as measurement of range Range Frequency Hz 24 Hour 23 1 C 90 Days 23 5 C 1 Year 23 5 C Introduction and Specifications Temperature Coefficient C Electrical Specifications Outside 18 to 28 C 0 35 0 03 0 35 0 04 0 35 0 04 0 035 0 004 10 Hz 20 kHz 0 04 0 03 0 05 0 04 0 06 0 04 0 005 0 004 20 50 kHz 0 1 0 05 0 11 0 05 0 12 0 05 0 011 0 005 100 mV 1 0 0 03 1 0 0 04 1 0 0 04 0 10 0 004 100 300 kHz 4 0 0 50 4 0 0 50 4 0 0 50 0
12. ESE a geen E Ag Vee ge SR Se Bee Se ek Se ie dee Non Volatile MEMOTY iese ea ea sk Re Re ee ee ee ee ee Ge GRA RA RA RA ER Ee Media Memory 8846A Only see see RA RA RA RR Re Re Re ee ee ee ee ee Ve N N EE RE EE EE OE IE ane ME EE N TE OR EE E Math ole ER N EO EE OE ON Electrical RE EE EE N E a Remote Interfaces Ee HE ss nnna Seed EG Se Ee Dee SE ee ER Ge se Ge EINN AN O OR OR N S Electrical Specifications ees kes See see Sek GN Ee Se ES Se kase de ee Re Gee ES eed DC Voltage Specifications iese se ee ee RA RA GRA RA RA RA Re Re ee ee ee AC Voltage Specifications ee ea se Re ee Ge ee ee ee RA RA RA RA eek ee EET i250 ssz ccs DC Current AE OE EE EE EE N EN EG id EE EE asemndaseeoaesee oe ld AA EE OE OR OE EO OE Capacitance 8846A Only ee ee ee Re RA RA RA RA RA Re Re Re ee ee Temperature 8846A only ee ee RA RA RA RA RA RR Re Re ee ee ee ee Additional Se RE RE deans 8845A 8846A Users Manual RR SE RE dantadsediaabancdanss Diode Test AR RE ashes ER EE N ees Measurement Rates IEEE488 A e esse esse sesse ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee 2 Preparing the Meter for Operation sees EE RE RR EE EER ER ER EE EE Ee Trt DUC LUR EE RE OE EG Unpacking and Inspecting the Meter ee ee RA GR GR Re ee ee ee Contacting PLUK iss e E E Storing and Shipping the Meter sa sa AR GR Re ee ee ee ee ee ee ee ae Power Considerations EEN Ge see Ed Ge SESSE Ee E GEE kb ee ee ben He EED Ee ges Selecting t
13. Factor Errors lt 100 HzZ Input Characteristics Range Resolution Crest factor 1 2 0 05 of full scale Crest factor 2 3 0 2 of full scale Crest factor 3 4 0 4 of full scale Crest factor 4 5 0 5 of full scale Resolution 100 0000 mV 4 Digits 10 uV 1uV 5 Digits 6 Digits 100 nV Input Impedance 100 V 1V 1 000000 V 100 pV 10 nV 1HV EE OE 10V 10 00000 V 1mV 100 pV 10 uV ee 100V 100 0000 V 10 mV 1 mV 100 pV 1000 V 1 000 000V 100 mV 10 mV 1mV 8846A Accuracy Accuracy is given as measurement of range 24 Hour 23 1 C 90 Days 23 5 C 1 Year 23 5 C Temperature Coefficient C Outside 18 to 28 C TOO mV 1 0 0 02 1 0 0 03 1 0 0 03 0 1 0 003 5 10 Hz 0 35 0 02 0 35 0 03 0 35 0 03 0 035 0 003 10 Hz 20 kHz 0 04 0 02 0 05 0 03 0 06 0 03 0 005 0 003 20 50 kHz 0 1 0 04 0 11 0 05 0 12 0 05 0 011 0 005 50 100 kHz 0 55 0 08 0 6 0 08 0 6 0 08 0 06 0 008 100 300 kHz 4 0 0 50 4 0 0 50 4 0 0 50 0 2 0 02 1 0 0 02 1 0 0 03 1 0 0 03 0 1 0 003 5 10 Hz 0 35 0 02 0 35 0 03 0 35 0 03 0 035 0 003 10 Hz 20 kHz 0 04 0 02 0 05 0 03 0 06 0 03 0 005 0 003 20 50 kHz 0 1 0 04 0 11 0 05 0 12 0 05 0 011 0 005 50 100 kHz 0 55 0 08 0 6 0 08 0 6 0 08 0 06 0 008 100 300 kHz 4 0 0 50 4 0 0 50 4 0 0 50 0
14. In this case the Meter gives priority to the low limit condition by displaying LOW and setting the low bit of the questionable data event register Refer to the Programmers Manual for instructions on setting the limits remotely Setting an Offset Value The offset function provides a means of displaying the difference between a measured value and a stored offset value This type of measurement is referred to as a relative measurement There are two methods of entering an offset value into the Meter The first method is to enter a specified number into the offset register either through the front panel or over the remote interface Previously stored values are replaced with the new value The offset value is stored in volatile memory and is set to zero when power is applied to the Meter or the Meter receives a reset through the remote interface The second method is to measure the desired reference value through the Meter s input connections and press zee The measured value is placed into the offset register and the display immediately starts showing the difference between measurements and the stored value Note The Zero key cannot be used to zero a DB or DBM measurement Refer to Measuring AC Voltage in Chapter 4 of this manual To enter an offset value through the front panel 1 Press 2 Press the MATH soft key 3 Press the AFF SET soft key To select the digit to adjust press either or gt With the desired d
15. To stop the TrendPlot session press or the 31 CF soft key To start the TrendPlot session over press the amp TOF soft key followed by the RESTART soft key Using the Histogram Function The Histogram function provides a graphical representation of the standard deviation of a series of measurements The right two thirds of the Meter s display is used as a bar graph chart The vertical axis is a relative measure of the number of readings while 10 vertical bars represent the standard deviation across the horizontal axis The two center bars indicates the number of readings that fall on either side of the average reading within the 1 standard deviation The two bars on either side of the center two bars represent the number of readings that fall within the 2 standard deviation The next two represent the 3 standard deviation and so on to the 5 standard deviation The histogram function is helpful in looking at the standard distribution of the UUT While observing the bar graph display see Figure 3 2 adjust the UUT variable control to peak the center two bars of the histogram 3 3 15 8845A 8846A Users Manual z HISTOGRAM caw056 eps Figure 3 2 Histogram Display In addition to the bar graph the left third of the display also displays the number of samples the average and standard deviation values To start a histogram session 1 Set up the Meter for the desired measurement by
16. constant name is bad Character string was more than 12 characters Command not allowed in local Command only allowed in RS 232 Ethernet Could not open guard crossing port Could not open measurement file on USB device Could not open the ethernet port Could not save configuration Could not save MAC address Could not save network configuration Data stale Error occurred reading characters from Ethernet port Error occurred reading characters from GPIB controller Error occurred sending characters to the GPIB controller Error occurred when purging memory Error opening GPIB Controller Error setting GPIB Primary Address Error setting the RTC System date Error setting the RTC System time Ethernet port not available in Fluke 45 emulation mode Function 2nd func mismatch Function math mismatch Function range mismatch Generic Execution Error Got out of sequence packet GPIB Command byte transfer error GPIB DOS Error GPIB File System Error GPIB I O operation aborted time out GPIB Interface Board has not been addressed properly GPIB Invalid argument GPIB No capability for operation GPIB No present listening devices GPIB Non existent GPIB board GPIB Routine not allowed during asynchronous I O operation GPIB Serial poll status byte lost GPIB Specified GPIB Interface Board is Not Active Controller GPIB Specified GPIB Interface Board is not System Controller GPIB SRQ stuck in ON position GPIB Table problem Guard crossing link
17. ee ee ee Measuring Frequency and Period iese ee ae RA RA RA RA RA Re Re ee ee ee Measuring Resistance iese se se ee ee RA RA GRA GRA GRA RA Re Re ee ee ee ee Making a Two wire Resistance Measurement esse sae ee ee ee Making a Four wire Resistance Measurement iese se ee ee ee 0e Measuring Current issie a es De Ve ed casa eos Re Ge dd os ee Gee RE ei Measuring DC Current esse ee ae RA RA RA GRA r GR Re iE ee ee ee Measurmg AG Current n ss SG oe Ge es ee eg ee EG Ee Ee ES ee es Measuring Capacitance 8846A only ee ee RA RA RA RA RA RR ee ee Measuring RTD Temperature 8846A only sa sk Re ee ee ee Testing COntINUIY siese id Ee es se REEL Ve Es ee GEGEE Rees SG Ge EER Gees ee se ese EE sk Checking Diodes se es EE Ee GE N EG Ee RS lesneddaasealesaase iactaaseuteceinsdeees Making a Triggered Measurement sees see ea RA RA RA RA Re Re ee ee ee ee Setting the Trigger Mode sa RA inn ee ee ee e Setting a Trigger Delay i iese ee ee ee RA RA RA RA Re GE ee ee ee ee ee Re RA Setting Number of Samples per TrigBer iis ss ee ee ee ee Re RA RA RA Connecting an External Trigger ie sesse se se ee ee ee ee Re RA ee ee ee ee ee Monitoring the Measurement Complete Signal iis sees sk Re Re ee Appendices DOP dii 8845A 8846A Users Manual List of Tables Table Title BEE io ie RE ER N AO EE eaes 1 2 Safety and Electrical Symbols esse see ese ee ee ee ee ee e
18. failed to start Guard crossing restarted Illegal Data value was entered Illegal Unknown NPLC Selection Illegal Unknown TRIGGER Selection Appendices B Errors Incorrect packet size from inguard Info packet rec d link not active Inguard Calibration Constant write failed Inguard not responding recv Inguard not responding send INITiate received but was ignored Instrument configuration load failed Instrument configuration store failed Insufficient memory Invalid dimensions in a channel list Invalid parameter Invalid parameter Invalid response type from inguard Invalid secure code Invalid string data Invalid suffix in command header Line too long greater than 350 characters Load reading from file failed Lost sync with inguard Math error during calibration Measurement configuration load failed Measurement configuration store failed Measurement data lost Missing or wrong number of parameters No entry in list to retrieve No error No measurements taken during calibration Not ACKing my packets Numeric value is invalid Numeric value is negative Numeric value is real Numeric value overflowed its storage Overload at input during calibration Oversize packet rec d Parameter is not a boolean type Parameter is not a character type Parameter is not a numeric type Parameter is not an quoted string type Parameter is not an unquoted string type Parameter type detection error Port value is out of range 1024 to 655
19. filter menu For best accuracy and stable readings choose a filter based on the lowest frequency to be measured and the performance needed He SLOW Provides higher measurement accuracy on ac signals TT pe e Sey ate hd between 3 Hz and 20 Hz However the measurement cycle time is longer than it is when using the 20 Hz filter bint He Provides higher measurement accuracy on ac signals between 20 Hz and 200 Hz The measurement cycle time is longer however than it is when using the 200 Hz filter OH Provides accurate measurements on ac signals 200 Hz and above Displays the measured voltage as a decibel value referenced to a stored relative value dB 20 log Vnew Vstored The stored value is obtained from the first measurement the Meter makes after pressing the dE soft key All future measurements are displayed using the stored value as an offset To take the Meter out of dB mode press the soft key Displays the measured voltage as a power decibel value referenced to 1 milliwatt dBm 10 log power of Vnew into the reference resistance 1 mW or 10 log V R 1 mW where R is the resistance To accommodate the various impedances that a dBm measurement can be made across the Meter allows for the selection of 21 different impedance values To set the dB reference impedance Press Press the soft key labeled dBm kef The available impedance settings are presented in sets of three values To move to a higher
20. first four soft keys with the first four memory locations COHF TG 1 through COHMF 14 The fifth soft key is labeled HORE to allow access to all 100 memory locations 4 To recall the Meter configuration from one of the first four memory locations press the appropriately labeled soft key If you want a memory location other than the first four locations press the HORE soft key The display indicates the last memory location containing a Meter configuration If all configuration memory locations are filled the Meter will always indicate memory location 10 5 To select the memory location press either or to select a specific digit With the digit selected press the soft key labeled to decrement the digit or to increment the digit 6 Once the chosen memory location is set press the EM TEF soft key to recall that Meter configuration Note Incompatible configurations from incompatible configuration versions will not be loaded but will generate error 229 Incompatible measurement configuration not loaded Managing Memory The Meter provides a method of clearing internal memory and displaying the status of external memory 8846A Only Per Department of Defense requirements the Meter allows the erasure of Meter configuration and data files from external USB memory modules Other files are not erased from the modules 3 22 Front Panel Operation 3 Controlling System Related Operations To copy the last or inte
21. highlighted and all displayed values are the measured value modified by the formula MX B Pressing EMAELE again disables MX B and EMAELE is no longer highlighted The MX B calculation is applied after other MATH scaling calculations but before other MATH comparisons Using TrendPlot TrendPlot provides a visual representation of the measured signal over time About three quarters of the Meter s display is used to plot the maximum and minimum readings vertically while the horizontal axis represents time The vertical and horizontal axis are not calibrated and only represent relative time and amplitude depending on the input signal Each plot mark is a one pixel wide vertical line that represents the highest top of mark and lowest bottom of mark reading the Meter has taken in the time since the previous mark was made The left most plot mark represents the time TrendPlot was started When all available plot points across the plot area are filled the Meter compresses the plot marks to one half of the plot area The compression process takes the highest and lowest reading between every two plot marks and makes a single plot mark representing the highest and lowest readings of the two combined plot marks Future plot marks added to the end of the compressed display are now the Meter s highest and lowest readings taken over a time period twice as long as the period before the compression If the amplitude of the measured value excee
22. internal circuitry 2 Press the soft key labeled EXT TRIS to toggle between internal and external triggering Setting a Trigger Delay When in external trigger mode the Meter is capable of delaying the start of the measurement cycle after the trigger stimulus is sensed by up to 3600 seconds To set a trigger delay 1 With the measurement setup menu displayed press the soft key labeled TERT GGER 2 Press the soft key labeled TRIG DELAY 3 Use the soft keys to set the trigger delay Select the digit in the value by pressing either or With the desired digit selected press the soft key labeled to decrement the digit or to increment the character 4 Press EMH TER Setting Number of Samples per Trigger When in external trigger mode the Meter will take between 1 and 50 000 measurements for each trigger received To set the number of samples or measurements the Meter will take for each external trigger received 4 17 8845A 8846A Users Manual 4 18 Press to display the measurement setup menu Press the TR TIGGER soft key RW N mm lae CO n n gt oO n Eb ian CO lt gt Ss oO MA Q HE Dir my Fri Use the soft keys to set the number of samples between 1 and 50 000 Select the digit in the value by pressing either or gt With the digit selected press the soft key labeled to decrement the digit or to increment the character 5 Press ENTER
23. is displayed To read additional errors press BEE KATE Mis If you want to erase all error messages without looking at each press the CLF ALL soft key 3 23 8845A 8846A Users Manual 3 24 Querying the Firmware for Revision Level The Meter makes available the hardware version software version and serial number of the instrument To view the versions and serial number 1 2 Press km Press the soft key under SYSTEM Press the soft key under WERSTONMS SM under the Setup menu The display shows the outguard software version fu Sli the inguard software version Im amp Sl the outguard hardware version 1u 5 Hb and the inguard hardware version 1 n Hl Also displayed is the Meter s serial number Adjusting Display Brightness Setting the brightness of the display is accessible through the Instrument Setup key To adjust display brightness l 2 3 4 5 Press EE Press the SS TEM soft key Press the BE I GHT soft key Press one of the soft keys under LOU HED ILH and HIGH Press to return to the previous menu Setting the Meter s Date and Time BP oS Press f n Press the SYSTEM soft key Press the DATE TIME soft key To adjust the display to the desired date and time press either or to select a specific digit or the month With the desired digit or month selected press the soft key labeled to decrement the digit or to increment the digit
24. kHz ac coupled true rms dc coupled to the fuse and shunt no blocking 200 Hz to 10 kHz Crest Factor Error applies to non sinusoidal waveforms only Maximum Crest Factor 0 0 c eee ss ee ee 5 1 at full scale Additional Crest Factor Errors lt 100 Hz Input Characteristics Introduction and Specifications Crest factor 1 2 0 05 of full scale Crest factor 2 3 0 2 of full scale Crest factor 3 4 0 4 of full scale Crest factor 4 5 0 5 of full scale Electrical Specifications Range Resolution Resolution Shunt Resistance Burden Voltage 4 Digits 5 Digits 6 Digits Ohms 100 uA 100 0000 pA 10 nA 1nA 100 pA 100 Q lt 0 015 V u 1 mA 1 000000 mA 100 nA 10 nA 1nA 100 Q 0 15 V 10 mA 10 00000 mA 1A 100 nA 10 nA 12 lt 0 025 V 100 mA 100 0000 mA 10 nA THA 100 nA 10 0 25 V 400 mA 400 000 mA 100 pA 10 pA 1 pA 19 0 50 V 1AP 1 000000 A 100 pA 10 pA 1 uA 0 012 lt 0 05 V 3 A PBI 3 00000 A 1mA 100 pA 10 pA 0 019 0 05 V TOAP 10 00000 A 1mA 100 uA 10 uA 0 019 0 5 V 1 8846A Only 2 Part of 10 A range 3 Available at front panel connectors only 4 400 mA available in software version 1 0 700 18 or greater only 400 mA continuously 550 mA for 2 minutes on 1 minute off maximum crest factor 3 1 at 400 mA 1 8845A 8846A Users Manual 8846A Accuracy Accuracy is given as measurement of range
25. price Fluke reserves the right to invoice Buyer for importation costs of repair replacement parts when product purchased in one country is submitted for repair in another country Fluke s warranty obligation is limited at Fluke s option to refund of the purchase price free of charge repair or replacement of a defective product which is returned to a Fluke authorized service center within the warranty period To obtain warranty service contact your nearest Fluke authorized service center to obtain return authorization information then send the product to that service center with a description of the difficulty postage and insurance prepaid FOB Destination Fluke assumes no risk for damage in transit Following warranty repair the product will be returned to Buyer transportation prepaid FOB Destination If Fluke determines that failure was caused by neglect misuse contamination alteration accident or abnormal condition of operation or handling including overvoltage failures caused by use outside the products specified rating or normal wear and tear of mechanical components Fluke will provide an estimate of repair costs and obtain authorization before commencing the work Following repair the product will be returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges FOB Shipping Point THIS WARRANTY IS BUYER S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARR
26. set of impedance values press Press to go toa lower set of impedance values With the impedance highlighted press the soft key under the value selected Cycles the secondary display through the measurement functions listed below and then off When a second measurement function is selected the ZHD MEAS soft key label is highlighted VDC Displays the de voltage on which the ac signal may be riding Note ACV DCV dual mode should not be used at frequencies below 10 Hz Frequency Displays the frequency of the ac signal applied to the Input HI and LO connectors of the Meter Making Measurements Measuring Frequency and Period Measuring Frequency and Period The Meter measures the frequency or period of ac signals between 3 Hz and 1 MHz applied between the Meter s HI and LO connectors The key not only activates the Meter s Frequency Period function but also toggles the Meter s primary display between the signal s frequency and period measurement Therefore whether a frequency or period measurement appears after pressing depends on the condition this function was left in the last time it was used To make a frequency measurement 1 Press 3 Q 000000 Hz eee lmn APERTURE 2ND MEAS Ho IE ee ee AE caw06f eps If amp is displayed press again to switch the primary display to frequency 2 Connect the Meter to the signal as shown in Figure 4 1 To make a per
27. the Meter Contacting Fluke To order accessories receive operating assistance or get the location of the nearest Fluke distributor or Service Center call USA 1 888 44 FLUKE 1 888 443 5853 Canada 1 800 36 FLUKE 1 800 363 5853 Europe 31 402 675 200 Japan 81 3 3434 0181 Singapore 65 738 5655 Anywhere in the world 1 425 446 5500 Service in USA 1 888 99 FLUKE 1 888 993 5853 Or visit Fluke s Web site at www fluke com To register this product visit http register fluke com Storing and Shipping the Meter The Meter should be stored under cover The shipping container provides the most suitable receptacle for storage as it provides the necessary shock isolation for normal handling operations Place the Meter inside a sealed bag Place the bag into the cushioning material inside the shipping container and store in a location that complies with the storage environment specification described in Chapter 1 If the Meter is shipped use the original shipping container if possible It provides shock isolation for normal handling operations If the original shipping container is not available a box that is 17 5 x 15 5 x 8 0 with cushioning material that fills the space between the Meter and the sides of the box should provide similar shock isolation Power Considerations The Meter operates on power distribution standards found throughout the world and must be set up to operate on the line volta
28. the Meter s memory elements and the procedures for clearing them Volatile Memory Table 1 3 lists the Meter s volatile memory elements Table 1 3 Volatile Memory Space tyre sie SDRAM 128 MB Out guard measurement data user strings temporary configuration information and Ethernet Host name SRAM In guard Measurement data and configuration information To clear both volatile memory elements listed in Table 1 3 1 Press EE 2 Press the MAM 3 Press the EFAS Introduction and Specifications 1 Accessories Non Volatile Memory Table 1 4 lists the Meter s non volatile memory elements Table 1 4 Non volatile Memory Space Tyme Sm Fanon i Flash 128 MB Application program storage user string user data user remote interface settings calibration constants FPGA hardware setup application program storage calibration constants To clear the 128 MB of non volatile flash memory listed in Table 1 4 1 Press memory 2 Press the MAKAGE 3 Press the ERASE USE FLEE soft key MEMORY soft key This process clears only the user accessible portion of memory Note The 4 MB non volatile memory element is not usable and cannot be cleared by the user Media Memory 8846A Only The 8846A has a front panel USB port for connecting flash memory modules up to 2 Gigabytes capacity to store Meter configuration and measurement data To clear a memory module while connected to the 8846A 1 Press
29. 0 uA 100 0000 uA 10 nA 1 nA 100 pA 100 Q lt 0 015 V 1 mA 1 000000 mA 100 nA 10 nA 1nA 100 Q 0 15 V 10 mA 10 00000 mA 1 uA 100 nA 10 nA 10 lt 0 025 V 100 mA 100 0000 mA 10 uA 1 uA 100 nA 10 lt 0 25 V 400 mA 400 000 mA 100 uA 10 HA 1 uA 12 lt 0 50 V 1A 1 000000 A 100 pA 10 HA 1 uA 0 01 Q lt 0 05 V 3A 3 00000A 1 mA 100 uA 10 uA 0 019 lt 0 15 V 10A 10 00000 A 1mA 100 pA 10 uA 0 019 lt 0 5 V 1 Part of 10 A range 2 Available on the front panel terminal only 3 400 mA available in software version 2 0 or greater only 400 mA continuously 550 mA for 2 minutes on 1 minute off 8845A 8846A Users Manual Accuracy 8846A Accuracy is given as measurement of range 24 Hour 23 1 C 90 Days 23 5 C 1 Year Temperature Coefficient C 23 5 C Outside 18 to 28 C 0 03 0 02 0 04 0 02 0 05 0 02 0 005 0 001 0 05 0 02 0 08 0 02 0 1 0 02 0 005 0 002 0 1 0 008 0 12 0 008 0 15 0 008 0 005 0 0008 1 Part of 10 A range 2 Available at front panel connectors only 3 400 mA available in software version 2 0 or greater only 400 mA continuously 550 mA for 2 minutes on 1 minute off Accuracy 8845A Accuracy is given as measurement of range Ranue 24 Hour 9 23 1 C 90 Days 23 5 C 1 Year Temperature Coefficient C 23 5 C Outside 18 to 28 C 100 pA 0 01 0 02 0 04 0 025 0 05 0 025 0 002 0 003 0 0
30. 02 0 0006 0 003 0 0007 0 004 0 0007 0 0005 0 0001 Range 0 0015 0 0004 0 002 0 0005 0 0035 0 0005 0 0005 0 0001 100 V 0 002 0 0006 0 0035 0 0006 0 0045 0 0006 0 0005 0 0001 1000 V 0 002 0 0006 0 0035 0 0010 0 0045 0 0010 0 0005 0 0001 Additional Errors Digits NPLC Additional NPLC Noise Error 6 100 0 of range 6 10 0 of range 5 1 0 001 of range 5 2 0 0025 of range 12 uV 4 0 02 0 017 of range 17 uV AC Voltage Specifications AC Voltage specifications are for ac sinewave signals gt 5 of range For inputs from 1 to 5 of range and lt 50 kHz add an additional error of 0 1 of range and for 50 kHz to 100 kHz add 0 13 of range Maximum Input iese eek ee Re Re ee 750 V rms or 1000 V peak 8845A 1000 V rms or 1414 V peak 8846A or 8 x 10 volts Hertz product whichever is less for any range Measurement Method sesse ee ee ke AC coupled true rms Measures the ac component of input with up to 1000 V dc bias on any range AC Filter Bandwidth AR EE EE EE EE 3 Hz 300 kHz Ee TEE ipaeentesacteciepecenee seers cttapeue 20 Hz 300 kHz GE AE EE Ee 200 Hz 300 kHz Common Mode Rejection iese ke neee 70 dB at 50 Hz or 60 Hz 40 1 1 kQ unbalance Crest Factor Error applies to non sinusoidal waveforms only Maximum Crest Factor 0 0 00 eee ee ee ek 5 1 at Full Scale 8845A 8846A Users Manual Additional Crest
31. 07 0 005 0 030 0 005 5 0 005 0 002 0 0005 100 mA 0 01 0 004 0 03 0 005 0 05 0 005 0 002 0 0005 0 0 007 0 02 0 03 0 02 0 05 0 02 0 002 0 002 0 0 f 400 mA 0 03 0 004 0 04 0 005 05 0 005 0 005 0 0005 0 03 0 02 0 04 0 02 0 05 0 02 0 005 0 001 1 l 0 05 0 02 0 08 0 02 0 10 0 02 0 005 0 002 0 10 0 008 0 12 0 008 0 15 0 008 0 005 0 0008 1 Part of 10 A range 2 Available at front panel connectors only 3 400 mA available in software version 2 0 or greater only 400 mA continuously 550 mA for 2 minutes on 1 minute off Additional Current Errors Additional NPLC Noise Error for Additional NPLC Noise Error Digits NPLC 1 mA 100 mA 400 mA 3 A and for 100 pA 10 mA 1A 10A 6 100 0 of range 0 of range 6 10 0 of range 0 of range 5 1 0 001 of range 0 01 of range 5 0 2 0 011 of range 4 uA 0 11 of range 4 uA 4 0 02 0 04 of range 4 uA 0 28 of range 4 uA AC Current The following ac current specifications are for sinusoidal signals with amplitudes greater than 5 of range For inputs from 1 to 5 of range add an additional error of 0 1 of range Input Protection ee ee ee ke ee Measurement Method ees AC Filter Bandwidth Tool accessible 11 A 1000 V and 440 mA 1000 V fuses limits of 400 mA continuous 550 mA for 2 minutes on 1 minute off capacitor 3 Hz to 10 kHz 20 Hz to 10
32. 107 volt Hertz Gate Time vs Resolution Gate Time Resolution 0 01 5 0 1 6 1 0 6 Additional Low Frequency Errors Error stated as percent of measurement for inputs gt 100 mV For 10 100 mV multiply percent by 10 Resolution Frequency 6 5 4 3 5 Hz 0 0 12 0 12 5 10 Hz 0 0 17 0 17 10 40 Hz 0 0 2 0 2 40 100 Hz 0 0 06 0 21 100 300 Hz 0 0 03 0 21 300 Hz 1 kHz 0 0 01 0 07 gt 1kHz 0 0 0 02 1 20 Introduction and Specifications 1 Electrical Specifications Capacitance 8846A Only Accuracy is stated as of measurement of range 1 Year Accuracy Temperature Coefficient C 1 4055 1 4055 100 uF 100 nF 1 0 5 0 01 0 01 0 01 0 01 0 01 0 01 0 05 0 05 1 05 10 pF 1 0 5 100 mF 100 uF 4 0 2 1 Stated accuracy is attained when Zero function is used Temperature 8846A only TestEument EE ME Ke de ee ER ee ee 1 mA Accuracy is stated as C and is based on a Platinum RT100 DIN IEC 751 385 type RTD with less than 10 ohms lead resistance The accuracy listed in the table below are valid only when using the 4 wire RTD measurement function Specifications do not include probe accuracy which must be added Accuracy Temperature Range Resolution 90 Days 4 Year Coefficient C 23 5 C 23 5 C Outside 18 to 28 C
33. 16 Making a Triggered Measurement ccccssecssecssecseceteceseceseceseeseeeeeeeseeeesneeaes 4 17 Setting the Trigger Mode sees sa RA RA RR GR Re Ge ee ee ee ee ee ee 4 17 Setting a Trigger Delay sicssecscessnesscaiitesiensdacvbeaiobeavencuubcaaaedeivead Ek eie 4 17 Setting Number of Samples per TrigBer iis se se ee ee ee ee RA RA 4 17 Connecting an External Trigger iese see sea oe ek Re Re ee ee ee ee ee ee ee ee 4 18 Monitoring the Measurement Complete Signal iese sesse sk Re Re ee 4 18 4 1 8845A 8846A Users Manual 4 2 Making Measurements 4 Introduction Introduction AA Warning To avoid possible electrical shock and or damage to the Meter e Read the safety information found in Chapter 1 before operating this meter e Do not apply more than 1000 volts between any terminal and earth ground This chapter covers the steps for making a measurement with each of the Meter s functions These steps include making a proper and safe connection between the Meter and the circuit as well as the manipulation of the front panel controls to display the selected measurement If you are unfamiliar with the front panel controls review the relevant sections in Chapter 3 Selecting Function Modifiers Most of the functions described in this Chapter will have choices for changing how the measured value is displayed or how the input signal is processed These Function Modifiers appear in t
34. 2 0 02 5 50 100 kHz 0 55 0 08 0 6 0 08 0 6 0 08 0 06 0 008 1 0 0 02 1 0 0 03 1 0 0 03 0 1 0 003 100 300 kHz 4 0 0 50 4 0 0 50 4 0 0 50 0 2 0 02 10 V 1 0 0 02 1 0 0 03 1 0 0 03 0 1 0 003 100 V 1 0 0 02 1 0 0 03 1 0 0 03 0 1 0 003 750 V 1 0 0 02 1 0 0 03 1 0 0 03 0 1 0 003 5 10 Hz 0 35 0 02 0 35 0 03 0 35 0 03 0 035 0 003 10 Hz 20 kHz 0 04 0 02 0 05 0 03 0 06 0 03 0 005 0 003 20 50 kHz 0 1 0 04 0 11 0 05 0 12 0 05 0 011 0 005 50 100 kHz 0 55 0 08 0 6 0 08 0 6 0 08 0 06 0 008 100 300 kHz VIE 4 0 0 5 4 0 0 5 4 0 0 5 0 2 0 02 1 Typically 30 reading error at 1 MHz 2 750 Volt range is limited to 8 X 10 volt Hertz Additional Low Frequency Errors Error is stated as of reading AC Filter Frequency 3 HZ slow 20 HZ medium 200 HZ fast 10 20 Hz 0 0 25 20 40 Hz 0 0 02 40 100 Hz 0 0 01 0 55 100 200 Hz 0 0 0 2 200 Hz 1 kHz 0 0 0 02 gt 1 kHz 0 0 0 1 8845A 8846A Users Manual Resistance Specifications are for 4 wire resistance function 2 x 4 wire resistance or 2 wire resistance with zero If zero is not used add 0 2 Q for 2 wire resistance plus lead resistance and add 20 mQ for 2 x 4 wire resistance function Measurement Method iese sesse ee ee Re Current source referenced to LO input Max Lead Resistance
35. 200 ms 6 5 6 5 5 1 NPLC 16 7 20 ms 60 50 60 50 5 0 2 NPLC 3 3 ms 270 270 AY 0 02 NPLC 500 us 995 995 AC Voltage and AC Current 6 3 Hz 0 47 0 47 6 20 Hz 1 64 1 64 6 200 Hz 4 5 4 5 Frequency and Period 6 1s 1 1 5 100 ms 98 9 8 4 10 ms 80 80 Capacitance 6 NA 2 1 Typical measurement rates with auto zero off delay 0 display off auto range off and math off 2 Maximum measurement rates for 0 01 of ac step When dc input varies additional settling delay is required 3 For remote operation or external trigger using default settling delay 4 Speeds available in OutG SW 1 0 700 18 or higher Note that the measurements rates for RS232 can vary depending on the baud rate chosen If the baud rate selected is 115 200 the maximum measurement rate is 711 measurement s The LAN bus has a maximum measurement rate of 963 measurement s 1 22 Chapter 2 Preparing the Meter for Operation Title Page Botes elle ie GE ER N N EE EE EE Unpacking and Inspecting the Meter se ee ee RA RA RA RA RA RA RA EE Contacting Flake iese steek eise sede seg ek sd ER SEER ER NE sg ee SR ee De se Ee gs Se Rg Storing and Shipping the Meter sees se ee AA GR Re Ge ee ee ee ee ee ee ee ee ee Power Considerations esse esse Gees EE EES GR E Ke Ke eg ee SES ep see Selecting the Line Voltage ee ee ee ee RA GRA RA RA RA ee ee ee ee RA RA Replacing the Fuses issie eN EE SE SERE BIEG Re ED san A bees GR ee de
36. 35 Present function is invalid for selected command Quality indicator too low RS 232 framing parity overrun error detected Secondary function is not enabled Secure code too long Self Test Failed B 3 8845A 8846A Users Manual Serial buffer full Someone forgot to call begin cal Someone forgot to call begin ICONF Someone forgot to call begin MCONF Store reading to file failed String size is beyond limit Suffix Error Wrong units for parameter Syntax error Time out while taking data Timeout error during calibration Timeout occurred while opening the ethernet port Too many dimensions to be returned Too many errors Tried to set invalid state Tried to set invalid state Trigger Deadlock Trigger ignored just like 34401 Jnable to access storage memory nknown ACK byte nknown Calibration Constant nknown control byte nknown error d nknown Function Selection Unknown Range Selection Unmatched bracket Wizard password is invalid Wrong ACK number Wrong number configuration acknowledgement Wrong type of parameter s ccccoco Appendix C RS 232 Port Connections Introduction Table C 1 lists the pins and related signals available through the RS 232 port Table C 1 RS 232 Pin to Signal List N a WK EER ee S er geg EER eg The Meter s R 232 control lines can be rewired to an alternate pairing instead of the RTS CTS control pair This alteration should be done by a trained technician at Flu
37. 4 wire ohms 006 10 of range per lead for 10 Q 100 Q 1 kQ ranges 1 kQ per lead on all other ranges Input PFOLSCHOM EN 1000 V on all ranges Common Mode Rejection esse se ee ee ke ee ee 140 dB at 50 or 60 Hz 40 1 1 kQ unbalance Normal Mode Rejection n s 60 dB for NPLC of 1 or greater with analog filter off and power line freguency 40 1 100 dB for NPLC of 1 or greater with analog filter on and power line freguency 40 1 Analog Filters uas Edge ER de N din ed bee de ede When using the analog filter specifications are relative to within one hour of using the ZERO function for that range and NPLC setting Input Characteristics p Resolution Range Resolution Source Current 4 Digits 5 Digits 6 Digits 109 10 00000 Q 1mQ 100 uQ 10 uQ 5 mA 13 V 100 Q 100 0000 Q 10 mQ 1mQ 100 uQ 1 mA 6 V 1kQ 1 000000 kQ 100 mQ 10 mQ 1mQ 1 mA 6 V 10 kQ 10 00000 ko 19 100 mQ 10 mQ 100 uA 6 V 100 KQ 100 0000 kQ 10Q 1Q 100 mQ 100 uA 13 V 1 MQ 1 000000 MQ 1002 109 10 10 pA 13 V 10 MO 10 00000 MQ 1kQ 100 Q 102 1 uA 13 V 100MQ 100 0000 MQ 10 KO 1kQ 100 Q 1 uA 10 MQ 10 V 1 06Q 1 000000 GQ 100 ka 10 kQ 1kQ 1 uA 10 MQ 10 V 1 8846A Only 8846A Accuracy Accuracy is given as measurement of range Temperature 24 Hour 90 Days 1 Year aie Range Ps S s Coefficient C rane 23 1 C 23 5 C 23 5 C Outside 18 to 28 C 100 kQ 0 002
38. AE N ER EE EE EN Remote InterfaCes ses ses ses ss de SE ke AA Se eg Ak Re ed AA AA AS Ad MEE AAR ER N OE EE RE Electrical Specifications cccccesssssssssrsserseessesssestecsscenscssesesecseeseeeensesenesens DC Voltage Specifications iese ee ee Re RA RA GRA RA RA Ge AR Re ee ee ee AC Voltage Specifications ee ea se Re Ge Ge AA RA RA RA RA RA ee Re ee MES EET EO N OR AE DIOR EE nE iI REE E RA AC Currente oresar E A E EE E EA aa E T A E E RE E Capacitance 8846A Only 00 ee ee ee RA RA RA RA RA RA Re Re Re ee ee Temperature 8846A only ae RA RA RA RA RA RR Re Re ee ee ee ee Additional ETrOTS sites se SeSe eke EE ee Pe GE Ne A De ee Es Ee Pe Ee oe ee GUN OE EE RE AEREE RSS E 1 1 8845A 8846A Users Manual Diode EE OE Measurement Rates IEEE488 A4 ees esse se ees se se ee ee se ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee 1 2 Introduction and Specifications 1 Introduction Introduction The 8845A and 8846A are 6 1 2 digit dual display multimeters designed for bench top field service and system applications Their full complement of measurement functions plus its RS 232 IEEE 488 and Ethernet Remote Interfaces makes these multimeters ideal candidates for precision manual measurements and use in automated systems For portability these multimeters include a carrying handle that also serves as a bail for bench top operation There are a few feature differences between these two multimeters an
39. ANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES INCLUDING LOSS OF DATA ARISING FROM ANY CAUSE OR THEORY Since some countries or states do not allow limitation of the term of an implied warranty or exclusion or limitation of incidental or consequential damages the limitations and exclusions of this warranty may not apply to every buyer If any provision of this Warranty is held invalid or unenforceable by a court or other decision maker of competent jurisdiction such holding will not affect the validity or enforceability of any other provision Fluke Corporation Fluke Europe B V P O Box 9090 P O Box 1186 Everett WA 98206 9090 5602 BD Eindhoven U S A The Netherlands 11 99 To register your product online visit http register fluke com Table of Contents Chapter Title 1 Introduction and Specifications Introduction sic tetsads steven EER GE De ee tits hae nahin ES Ge GEE Ge ees Marital Sets ER EE RR OE EE EE N About this Mamtial iss si Ee EE ER SE t Ge ek es eek oe ke N oe eie Safety Informations sisipan i E a s ENEE RE AANE KEENER ENESE General Safety SUMMATY esse se se ee ee AA RA GRA GRA RA RA Re Re ee ee ee ee ede ER N EE Instrument Security Procedures iese se ee RA RA RA RA GR Re Re ee ee ee ee ee Volatile Memory iss Ee
40. Controlling Trigger Functions iese se se ee ee RA RA GRA RA AR Re ee ee ee ee 3 16 Choosing a Trigger Source cccceescesseesssesseessceeseecaeceseeeseeeeeesseeseneeeseesseeesaes 3 16 Setting the Trigger Delay ie ee ee ee ee GR AR GR Re ee ee ee ee Re ee 3 17 Setting the Number of Samples iese sa sa ek Re ee ee ee ee RA RA 3 18 Understanding the Measurement Complete Signal i ese se se ee ee 3 18 Accessing and Controlling MeMory ccccescceeseseeeeseeeeeeseeeesecnaecesecnaeenaeenes 3 18 Storing Readings in MeMOTY cccececsseceseceseceseceeeceeeeseeeeeeeeeaeesseeeseeesaeesaees 3 18 Recalling Readings from Memory cccssccssecsseceseceseceeeseeseeeseeeeneessneeaes 3 20 Storing Meter Configuration Information ie sesse ese see se ee ee ee Ge Ge ee ee 3 20 Storing the Power up ConfiguratHON esse sees ee ee ee ee ee ee ee Re ee ne 321 Recalling the Power up Configuration sesse ese see RA RA RA RA ee ee ee 321 Removing the Power up ConfiguratiON esse sees sae sk Re Re Re ee ee ee ee 3 92 Recalling a Meter Configuration ccccccscecsesssesseceseceseeeeeseeeseeeneeeseneenaes 3 22 Managing Memory EG EAN ER 3 22 Controlling System Related Operations ese ee ee RA RA RA Re ee ee 3 23 3 1 8845A 8846A Users Manual Identifying Meter EITOIS iese esse esse ee se ee se ee se ee ee ee GR de GRA Ge Re Re Re ee ee ee iskis Querying the Firmwa
41. Errors NPLC Additional Analog Filter Error 100 Vde 10 100 0 0002 V D 1 8845A 8846A Users Manual Table D 2 Ohms Analog Filter Errors Table D 3 DC Current Analog Filter Errors 0 0025 of range 0 009 of range 0 026 of range A AC Voltage Measurements 4 5 Analyze functions Histogram 3 15 Math Statistics TrendPlot B Bail adjustment of removal of C Calibration date checking of 3 25 Capacitance measurements 4 13 Cleaning the Meter 2 9 Clock setting date and time 3 24 Configuration recalling 222 storing Configure for Measurements 3 8 Continuity Setting of threshold 3 10 Testing for Current_measurments AC DC 4 11 D Date setting of 3 24 Index DC Voltage Measurements 4 4 Defaults resetting of 3 27 Diode Test checking of 4 16 setting compliance volta gel3 10 setting of current 3 10 Display Brightness sonjas of13 24 Panel elements 3 5 Resolution Setting of 3 9 E Equipment rack mounting 2 8 Errors List of B 1 Reading 3 23 DC Current DC Voltage 4 4 4 8 4 10 h 12 Resistance 4 8 Firmware checking revision 3 24 Fluke contacting of 2 3 Frequency meau rements 4 7 Front Panel Front Panel Nevisnionl5 8 Function modifiers Fuses Current input 2 5 Line Power 8845A 8846A Users Manual Historgram 3 15 Offset setting of O
42. FLUKE 8845A 8846A Digital Multimeter Users Manual July 2006 Rev 2 6 08 2006 2007 2008 Fluke Corporation Specifications subject to change without notice All rights reserved All product names are trademarks of their respective companies LIMITED WARRANTY AND LIMITATION OF LIABILITY Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service The warranty period is one year and begins on the date of shipment Parts product repairs and services are warranted for 90 days This warranty extends only to the original buyer or end user customer of a Fluke authorized reseller and does not apply to fuses disposable batteries or to any product which in Fluke s opinion has been misused altered neglected contaminated or damaged by accident or abnormal conditions of operation or handling Fluke warrants that software will operate substantially in accordance with its functional specifications for 90 days and that it has been properly recorded on non defective media Fluke does not warrant that software will be error free or operate without interruption Fluke authorized resellers shall extend this warranty on new and unused products to end user customers only but have no authority to extend a greater or different warranty on behalf of Fluke Warranty support is available only if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable international
43. Measurements Above 400 mA Refer to the Range Keys section in Chapter 3 of this manual for information on how to adjust the measurement range Measuring DC Current To measure dc current 1 Connect the test leads between the Meter s input connectors and the measured circuit as shown in Figure 4 4 for currents 400 mA or less or Figure 4 5 for currents up to 10 amps 2 Press c 8845A 8846A Users Manual M O OOSBOuA 1OH D FLTR A FLTE 2HO MERS 3 With the test Ce BE fy ey EE caw09f eps leads connected to the 400 mA and Input LO connectors press themf soft key as shown above if not already highlighted If the test leads are connected to the 10A and Input LO connectors then press the 1 0 Fi soft key 4 Apply power to the measured circuit and read the current in the Meter s display Function modifiers ET pn D FLT pni TI p 7 ZHL MEAS A filter for quieting noisy measurments This filter averages readings to reduce reading noise when in immedicate trigger mode or when in trigger mode with an unending number of triggers selected The filter is only available for dc functions at rates slower than 1 PLC The number of readings averaged by the digital filter varies with dc function and range A 3 pole analog filter for improving noise immunity The filter is active when this soft key label is highlighted and will increase stabilization time of the measuremen
44. Meters Vibration and ShOCK sesse ese ee Re Re ee ee ee Complies with Mil T 28800F Type Ill Class 5 Sine only Safety Designed to comply with IEC 61010 1 2000 1 UL 61010 1A1 CAN CSA C22 2 No 61010 1 CAT 1000V CAT II 600V EMC Designed to comply with IEC 61326 1 2000 11 EMC when used with shielded communications cables This Meter has shown susceptibility to radiated frequencies greater than 1 V m from 250 to 450 MHz Triggering Samples per Trigger cccccceceeeeeeesteeseeeees 1 to 50 000 1 9 8845A 8846A Users Manual Trigger Delay ui EE REED KARRE Red Geek andes 0 s to 3600 s in 10 uS increments External Trigger Delay iese see ee ee ke ee s1 mS External Trigger Jitter iese ee eke ee ke ee lt 500 US Trigger Input TTL Levels Trigger Output 5 V maximum open collector Memory CORSA GE GEE EE 10 000 measurements internal only ER ER EE EE NE 10 000 measurements internal and up to 2 Gigabyte capacity with USB memory module available separately see Accessories through front panel USB port Math Functions Zero dBm dB MX B Offset DCV ratio and TrendPlot Histogram Statistics min max average standard deviation and Limit Test Electrical Input Protection ia ss ER ske REEN Ee AD ge 1000 V all ranges ee EE RE 20 on all ranges except 1000 V dc 1000 V ac 8846A 750 V ac 8845A Diode and 10 A ranges Remote Interfaces RS 232C DTE 9 pin 1200 to 230400 b
45. Press the ENTEH soft key to set the date and time and return to the system menu USB Operation Starting with software version OutG SW 1 0 688 18 the USB memory operation offers a variety of capabilities As an example a USB device can be used to store readings either directly from the A D or by transferring readings from internal memory The data stored in the USB memory device is in a comma delimited CSV format USB Storage Capacity and Write Time The 8846A USB storage limit is 50 000 readings every time START is pressed F1 soft key press Previous versions stored 50 000 readings in 10 files each with 5 000 readings This version stores 50 000 readings in five files with 10 000 readings each If storing readings to the USB memory device is not completed or is interrupted by changing function NPLC remote press HEHOF Y MANAGE MNENOR Y INT T MEAS TO LISE so volatile readings in internal memory are stored to the USB Front Panel Operation 3 Configuring the Remote Interface If STOF is selected during storage to the USB device readings in internal memory will be written directly to the device Note that this may take several seconds A USB memory device should never be removed while a write is occurring The data is initially stored in internal memory and then transferred to the USB memory device For large data samples i e gt 10 000 readings when 10 000 readings have been stored in the internal memory the data will b
46. Range Keys section in Chapter 3 of this manual for information on how to adjust the measurement range Measuring Current The Meter is capable of making both ac and dc current measurements up to 10 A Two separate input connectors in conjunction with the LO connector are used for current measurements For best resolution current measurements not exceeding 400 mA should be made using the LO and mA input connectors as shown in Figure 4 4 A Caution To avoid blowing the current input fuse or possibly damaging the Meter e Current measurements between 400 mA and 10 A should be measured using only the 10 A and LO input connectors e BEFORE applying power to the circuit to be measured ensure the test leads are correctly connected to the Meter inputs appropriate for the expected current e Exceeding 440 mA on the 400 mA input connector or exceeding 11 A on the 10 Amp connector will blow the internal fuse 4 10 Making Measurements Measuring Current Current measurements expecting to be between 400 mA and 10 A are made using the Input LO and 10A input connectors as shown in Figure 4 5 INPUT SENSE VAR dem awn 2WIAWO A 1000V CAT V AT II 300V I lt 400 mA caw025 eps Figure 4 4 Input Connections for Current Measurements Below 400 mA I gt 400 mA and I lt 10A INPUT SENSE nm n caw026 eps Figure 4 5 Input Connections for Current
47. an FEEEEEEREEE EE caw08f eps 3 With the test leads connected to the 400 mA and Input LO connectors press the mA soft key as shown above if not already highlighted If the test leads are connected to the 10A and Input LO connectors then press the 1 Fi soft key 4 Apply power to the measured circuit and read the current in the Meter s display Function modifiers Filter Displays the filter menu For best accuracy and stable readings choose a filter based on the lowest frequency to be measured and the accuracy needed He SLOW Provides higher measurement accuracy on ac signals between 3 Hz and 20 Hz However the measurement cycle time is longer than it is when using the 20 Hz filter 2OHE Provides higher measurement accuracy on ac signals between 20 Hz and 200 Hz However the measurement cycle time is longer than it is when using the 200 Hz filter pkg eure Provides accurate measurements on ac signals 200 Hz and above f od Er i MHEAS Cycles the secondary display through the measurement functions listed below and then off When a second measurement function is selected the ZHL MEAS soft key label is highlighted IDC Displays the de current the ac signal is riding on Frequency Displays the frequency of the ac signal on the Meter s current connectors Input Lo and 400 ma or 10A connectors Measuring Capacitance 8846A only The Fluke 8846A is capable of measuring capacitance from 1
48. aud RS 232C to USB cable available to connect the Meter to a PC USB port See Accessories IEEE 488 2 LAN and Ethernet 10 100 base T with DHCP for IP_ADDRess option Warranty One year Electrical Specifications Accuracy specifications are valid for 6 digit resolution mode after at least a 1 hour warm up with Auto Zero enabled 24 hour specifications are relative to calibration standards and assume a controlled electromagnetic environment per EN 61326 1 2000 11 DC Voltage Specifications Maximum INpUt tcc eke n N GER aides 1000 V on any range Common Mode Rejection i ee ke 140 dB at 50 or 60 Hz 0 1 1 kQ unbalance Normal Mode Rejection s s 60 dB for NPLC of 1 or greater with analog filter off and power line freguency 40 1 100 dB for NPLC of 1 or greater with analog filter on and power line freguency 40 1 Measurement Method sesse ee ee ke Multi ramp A D AID LING AVY sesse ESE RR annes 0 0002 of measurement 0 0001 of range Input Bias Current seek Re RA ee eke lt 30 pA at 25 C Autozero Off Operation ee ee Following instrument warm up at calibration temperature 1 C and less than 10 minutes add error 0 0002 range additional error 5 uV Analog oi OE ER Aeris When using the analog filter specifications are relative to within one hour of using the ZERO function for that range and NPLC setting DE RAMU EN EE ate Accuracy is Input accuracy Reference accuracy where Input ac
49. ayer in the menu selection Front and Rear input switch All front panel input connectors except 10 A are available on the rear panel of the Meter These switches switch the Meter s input between them ig 400 mA and 10 A input connectors for ac and dc current measurement functions 1 Available on 8846A only Notes Display Panel The display panel described in Table 3 1 performs the following three functions e Displays measurements as a value with measurement units and measurement statistics in both numerical and graphical format TrendPlot and Histogram e Displays soft labels for soft keys F1 through F5 e Identifies the current mode of operation Local MAN or Remote REM 8845A 8846A Users Manual 3 6 Table 3 2 Display Elements caw02f eps OE o e Co os C mees PASS MoH LOW m O _ woniensinsseses NONNE vere mes sarra readros BREI EER EE weed OO wees O vanua erge mode eee er Le L O evee sineren O UO OyO O O erame OOOO O SSS OG lemon sae OOOO OOOO Measurement results occupy the first two rows of the display The primary display consists of larger sized characters that comprise the 6 digits 1999999 to 1999999 plus a decimal point In the example shown above the primary display shows measurement results for an ac voltage measurement OIIO The secondary display is smaller than the primary display and located in the upper right area of the displa
50. curacy DC Voltage accuracy for the HI to LO Input in ppm of the Input voltage and Reference accuracy DC Voltage accuracy for the HI to LO Sense Reference in ppm of the Reference voltage Settling Considerations sees ee ee ke Measurement settling times are affected by source impedance cable dielectric characteristics and input signal changes Introduction and Specifications 1 Electrical Specifications Input Characteristics gt Resolution Range Resolution Input Impedance 4 Digits 5 Digits 6 Digits 100 mV 100 0000mV 10 uV 1 uV 100 nV 10 MQ or gt 10 Go 1V 1 000000 V 100 uV 10 uV 1uV 10 MQ or gt 10 GOT 10V 10 00000 V 1 mv 100 uV 10 uV 10 MQ or gt 10 Ga 100 V 100 0000 V 10 mV 1mvV 100 uV 10 MQ 1 1000 V 1 000 000 V 100 mV 10 mV 1 mV 10 MQ 1 1 Inputs beyond 14 V are clamped through 200 kQ typical 10 MQ is default input impedance 8846A Accuracy Accuracy is given as measurement of range Temperature Coefficient C Outside 18 to 28 C 100 mV 0 0025 0 003 0 0025 0 0035 0 0037 0 0035 0 0005 0 0005 24 Hour 90 Days 1 Year Range 23 1 C 23 5 C 23 5 C 8845A Accuracy Accuracy is given as measurement of range Temperature 24 Hour 90 Days 1year Coefficient C 23 1 C 23 5 C 23 5 C seide 18 228 C 100 mV 0 003 0 003 0 004 0 0035 0 005 0 0035 0 0005 0 0005 0 0
51. d some specifications are tighter for the 8846A Features that exist in only one multimeter will be identified with the addition of 8846A Only by each feature that is found only in that model Separate specification tables are also used to clarify the differences between these two models The following is a list of some of the features and functions e Bright large digit wide viewing angle display e Dual display for displaying two properties of an input signal e g ac voltage in one display and frequency in the other e Remote operation via IEEE 488 RS 232 and Ethernet interface e Trigger in and measurement complete out e Front panel USB port for optional memory 8846A Only e 6 1 2 digit resolution e Half rack width e True rms ac e 2 and 4 wire resistance measurements e Extended 10 Q and 1 GQ ranges 8846A Only e Frequency measurements to 300 kHz 8846A to 1 MHz e Capacitance measurements 8846A Only e Temperature measurement 8846A Only e 10 A current capability e Decibels dB and dBm with variable reference impedance and audio power measurement capability e Input terminals on both front and rear panels of the meter e Closed case calibration no internal calibration adjustments Manual Set The manual set for these multimeters consists of a Users Manual and Programmers Manual ona CD ROM The Users Manual contains information on specifications setup and operating from the front panel The Programmers Man
52. dicates the proper fuse for each of the four line voltage selections This fuse is located on the rear panel To replace this fuse 1 Unplug the power cord from the Meter 2 Remove the fuse holder by inserting a small screwdriver blade in the narrow recess to the left of the fuse holder and pry to the right until the holder pops out as shown in Figure 2 1 The Meter is shipped with a replacement fuse of the same rating as the fuse installed in the fuse block 3 Remove the fuse and replace with one rated appropriately for the selected line power voltage See Table 2 1 4 Replace the selector block back into the fuse holder AA Warning To avoid electric shock or fire do not use makeshift fuses or short circuit the fuse holder Use only Fluke fuses Preparing the Meter for Operation 2 Power Considerations Table 2 1 Line Voltage to Fuse Rating caw0201f eps Figure 2 1 Replacing the Line Fuse Current Input Fuses The 400 mA and 10 A inputs are protected by user replaceable fuses e The 400 mA input is protected by a fuse F2 rated at 440 mA 1000 V fast blow 10 000 A minimum breaking capacity Fluke Part No 943121 e The 10 A input is protected by a fuse F1 rated at 11 A 1000 V fast blow 10 000 A minimum breaking capacity Fluke Part No 803293 A Warning For protection against fire or arc flash replace a blown fuse only with one from Fluke To test for a blown Current Input Fuse 1
53. display also illuminates while readings are being stored Note For internal storage of readings the number of readings stored will not exceed 9999 readings regardless of the value set for number of samples To store readings in external memory 8846A Only 1 Press memory 2 Press the STORE F HGS soft key 3 Press the LI 4 Press the 5AMNFLES soft key 5 To adjust the number of samples press either or to select a digit With the chosen digit selected press the soft key labeled to decrement the digit or to increment the character ror ry 6 With the number of samples set press the EMTER Readings menu soft key to return to the Store 7 Press the STHET soft key to begin storing measurements The START soft key will change to STF which can be pressed to stop the storage process When the requested number of samples have been stored the soft key label changes back to TART The MEM annunciator in the display also illuminates while readings are being stored 3 19 8845A 8846A Users Manual Note Each memory file will store up to 10000 readings If the number of samples is set to a value greater than 10000 consecutive memory files will be used to store all the samples If the readings fill the last file 999 reading storage will stop Recalling Readings from Memory To recall readings from internal memory 1 Press memory 2 Press the RECALL READING soft key The Meter disp
54. ds the positive or negative range of the vertical axis the Meter adjusts the vertical range to accommodate the range of the new Front Panel Operation Using the Analyze Functions plot point Previously laid down plot marks are adjusted down in size proportionally to the new vertical axis The left section of the Meter s display indicates the highest maximum and lowest minimum reading taken since the start of a TrendPlot session In addition the length of the TrendPlot session is displayed in hours minutes and seconds hh mm ss To start a TrendPlot session 1 Set up the Meter for the desired measurement by selecting the function and connecting the signal to the Meter s input Note Setting the range function to manual will cause the Trendplot display to plot at the top or bottom edge of the plot area without making an amplitude adjustment when the input signal exceeds the limits of the Meter s range 2 With the Meter taking measurements press f LOT soft key to start the session As shown in Figure 3 1 the display will start plotting the readings across the plot area and the maximum minimum and elapsed time are displayed When there are longer intervals or delays between readings TrendPlot will initially look like unconnected dots until enough time elapses to gather more readings AML EER Maxi 2657 2 17 17 Min 1 0629 caw057 eps Figure 3 1 TrendPlot Display
55. ds to the Meter s input connectors as shown in Figure 4 1 2 Press 0 206220MOQ WIT RE D FLTR caw030 eps 3 If not already highlighted as shown above press the 4 zhishi soft key Function modifiers E FLTE A filter for quieting noisy measurments This filter averages readings to reduce reading noise when in immedicate trigger mode or when in trigger mode with an unending number of triggers selected The filter is only available for dc functions at rates slower than 1 PLC The number of readings averaged by the digital filter varies with dc function and range TE Tl oo al ii A 3 pole analog filter for improving noise immunity The filter is active when this soft key label is highlighted and will increase stabilization time of the measurement See Appendix D for more information on when to use the analog filter Note For best results the filter may require zeroing during the ohms function Refer to the Range Keys section in Chapter 3 of this manual for information on how to adjust the measurement range Making a Four wire Resistance Measurement The Meter incorporates two methods of making a four wire resistance measurement The traditional method is to use four meter leads to connect the Meter to the resistance to be measured The optional 2X4 Wire test leads simplifies the four wire measurement so you only have to plug in two test leads to the front panel Input HI and LO connectors of the
56. e 4 17 Reading Triggered Measurement 4 17 MxX B function 3 13 Turning power on 2 8 Index continued Unpacking Meter User documentation V Voltage AC measurements 4 5 DC measurements 4 4 8845A 8846A Users Manual 8845A 8846A Users Manual This page is for holding the Reference Document RD fields Do not remove from this master document All RD fields will be placed after this text
57. e GR Re GRA GRA ee Re ee Re ee Re ee ee 1 3 Volatile Memory Space esse ses es ee EA RA ee AA ASe ARR Re ee ee ee ge E 1 4 Non volatile Memory Space iis se se se ee ee RA RA RA GRA Ge Re GR Re ee Re ee ee ee ee ER G K AE EE 2 1 Line Voltage to Fuse Rating esse ee ee RA RA RA GRA GRA RA RR GR Re ee ee ee ee 2 2 Line Power Cord Types Available from Fluke 3 1 Front Panel Controls and Connectors iese ee ea RA RA RA RR Re Re ee ee ee 3 2 Display Elements sisie se Ee Ne O Nee Ge be Geo eg Gee ge eed Ee EE nes 3 3 Rear Panel ConneCtOTS ii ee ee ee AR GRA GRA GRA RA RA Re Re ee ee ee ee 8845A 8846A Users Manual vi List of Figures Replacing the Line Fuse issie ie Eed Ke ee ke EG Me GE ee ee I ee EE Dee es Replacing the Current Input Fuses issie se se ee ee ee ee ee Re RA RA RA RA ee ee Line Power Cords Types Available from Fluke iiss sesse esse se esse ek ee ee ge ee eed Ge ee Bail Adjustment and Removal sesse se ee ee ee ee ee RA RA GRA RA Ge Re ee Re Ge Re ee ee TrendPlot Display ike EERS ee EE EG EE E ee ee ee Ee se ee ee EE Histogram DE EA AS ORE OR N RE AR N OG Input Connections for Voltage Resistance and Frequency Measurements Input Connections for 4 wire Resistance Measurement iese ese ee ee se ee Input Connections for 4 wire Ohms Using 2x4 Wire LeadS ees ee se ee Input Connections for Current Measurements Below 400 MA ee ese se ee Input Connections for Current Measureme
58. e Meter for Operation 2 Connecting to Line Power Connecting to Line Power AA Warning To avoid shock hazard connect the factory supplied three conductor line power cord to a properly grounded power outlet Do not use a two conductor adapter or extension cord this will break the protective ground connection If a two conductor power cord must be used a protective grounding wire must be connected between the ground terminal and earth ground before connecting the power cord or operating the instrument First verify that the line voltage selection is set to the correct position and then that the correct fuse for that line voltage is installed Connect the Meter to a properly grounded three prong outlet Table 2 2 Line Power Cord Types Available from Fluke Type Voltage Current Fluke Model Number alh3 eps Figure 2 3 Line Power Cords Types Available from Fluke 2 7 8845A 8846A Users Manual Turning Power On AA Warning To avoid electric shock connect the Meter s power cord toa power receptacle with proper earth ground A protective ground connection by way of the grounding conductor in the power cord is essential for safe operation With the proper line voltage selected and the appropriate power cord connected to the Meter connect the power cord to a power outlet and switch rear panel power switch so the T side of the switch is depressed Adjusting the Bail For bench top use the Meter s bail or handle i
59. e ee Managmpg Merry esse sees SE ENS ee de ke GE Go ee ei ge ES Ee Ee ES Ne Ge Contents continued Controlling System Related Operations ese ee ee RA RA RA Re ee ee ee Identifying Meter EITOTS iese esse esse ee se ee se ee Ge ee RA GRA GRA GRA Re Re Re ee ee ee ee ee Querying the Firmware for Revision Level sesse se see ee ee ee ee Adjusting Display BrightneSS iese see sa ok Re Re Ge ee ee ee Ge RA RA ee Re Ee Setting the Meter s Date and Time sees ee ee ee ee ee RA RA USB Operation siese sed Ee MESSE GE EE el Se ee GE Ee ee Se ee GE EG Se agate USB Storage Capacity and Write Time sesse sees Re Re Re ee ee ee ee USB Memory Device Compatibility and Special Instruction Configuring the Remote Interface iss se se ee EA RA RA RA Re Re ee ee ee Checking the Meter s Calibration Date sesse ee ee AR Re Re ee ee Resetting the Meter s Default Settings iese see ee sa RA RR Re Re ee ee ee ee 4 Making Measurements ssececessesseseeeeecceeeeenssseeeeneeeeseeeeeenneanenee Tint DUC ELON in a E veaaeaezecassonieaddsoeteeobaealecsaseniers Selecting Function ModifierS esse see sa AA RR GR Re ee ee ee ee ee ee ee ee ee Activating the Secondary Display esse se se ee ee ee RA GRA GRA GRA GRA Re Re ee Measuring Voltage iese se ee ee ee Re RA RA RA RA GRA GRA RE ee Re ee ee ee ee ee Me asuring DG ie TUE OO EE RE ER Measuring AC Voltage ee see ee ae RA RA RA RA GRA RA GR Re Re ee
60. e transferred to the USB memory device The front panel display shows EBUSY WRITING US during the write For 10 000 samples the write time will typically take 4 seconds In ACV you can press dB dBm or zero while data is being stored Units and dgC dgF K etc can be changed in the middle of a USB readings file as well Each CSV file stored or copied to the USB memory device shows the date time of the first sample line row and the date time of the last sample in each file Note Readings are not stored during the time each file is written to USB memory stick which can take 7 15 seconds As a result when storing more than 10 000 readings there will be data gaps during the time the file is written to the USB memory device Note When using Mx B and other math functions the internal sampling rate is slowed to permit data collection without loss As an example with Mx B active the maximum dcV storage rate is 340 reading s USB Memory Device Compatibility and Special Instruction After inserting a USB memory device Mass Storage Device into the 8846A wait 5 seconds for the USB memory to be mounted before initiating any memory or measurement activity Press MEMOQE MANAGE HEMGE Y and LIEB STATUS to verify a USB memory device is readable by the 8846A Not all USB memory devices are usable Devices that try to upload their own driver are generally not compatible Wait 3 or more seconds after the USB memory dev
61. ee eg Line Power AE RE ER OR ates Current Input BUSES siese ed Es ese RS E E Ee Ke ae RE ales Ge ees Connecting to Line POWET crisissen ee ee senn ee AA RA RA GRA GRA Re E Re ee ee ee ee Turning POWer On uses EDE N E EAEE EA R Adjusting the Bail iss Se EE DE SE Ge GR Ge GE Gee Gee ke Sek eg Re des ees es Installing the Meter in an Eguipment Rack Cleaning the Meter N EE Ke SR Ee NG GR Ge EN og EE EN eN Ne AR EE Ee ede 2 1 8845A 8846A Users Manual 2 2 Preparing the Meter for Operation 2 Introduction Introduction This chapter explains how to prepare the Meter for operation by selecting the proper line voltage connecting an appropriate line power cord and turning on the Meter Also included is information on the proper storage and cleaning of the Meter Unpacking and Inspecting the Meter Every care is taken in the choice of packing material to ensure that your equipment will reach you in perfect condition If the equipment has been subject to excessive handling in transit there may be visible external damage to the shipping carton In the event of damage the shipping container and cushioning material should be kept for the carrier s inspection Carefully unpack the Meter from its shipping container and inspect the contents for damaged or missing items If the Meter appears damaged or something is missing contact both the carrier and Fluke immediately Save the container and the packing material in case you have to return
62. er selection is available as a modifier Pressing the Fi ter soft key will expose a menu that allows you to select between the three filter settings 3 9 8845A 8846A Users Manual Note The 20 Hz filter is the power up default selection Setting Continuity Resistance Threshold and Diode Test Parameters The threshold resistance value for the continuity function and the amount of current and voltage used for Diode testing are adjustable Continuity resistance threshold can be set to four different values 1 Q 10 Q 100 Q and 1 kQ Diode test voltage and current can also be set to two different values 5 V or 10 V and 1 mA or 0 1 mA Setting the Continuity Threshold Resistance The resistance threshold can be set at 1 10 100 or 1000 2 To set the threshold 1 Press to see the Measurement Setup menu 2 Press the MORE soft key 3 Press the CONTIN OHMS soft key 4 Press the soft key labeled with the desired threshold Refer to the Testing Continuity section in Chapter 4 to test continuity Setting the Diode Test Voltage and Current To set the diode test current 1 Press twice on the 8846A or press once on the 8845A to select the Diode function 2 Press the imA or 1mH soft key to set the diode test current 3 Press the 4 or i 0l soft key to set the diode test voltage Refer to the Checking Diodes section in Chapter 4 to check diodes Setting the Default Temperature Scale 8846A Only When the te
63. ft keys allow changing the test voltage and current applied to the diode through the test leads The compliance voltage is set to either 5 volts or 10 volts The compliance current is set to either 1 mA or 0 1 mA Press the appropriate soft key to select the desired voltage and current setting Making a Triggered Measurement Triggering the Meter s measurement cycle is set through the trigger menu and performed via a connection on the Meter s rear panel or the front panel trigger key The trigger menu also allows setting a trigger delay and setting the number of samples or measurement cycles taken for each trigger received All trigger function parameters are accessed through the measurement setup key Press to see the measurement setup menu A measurement trigger can also be initiated through the IEEE 488 port with a remote command This method of triggering is covered in the 88454 8846A Programmers Manual Setting the Trigger Mode The Meter s measurement cycle can be initiated either by the internal measurement circuit or by external stimulus To select the trigger mode 1 With the measurement setup menu displayed press the soft key labeled TRIGGER IFE T TRIG is highlighted the Meter s measurement cycle is triggered externally either through the external trigger jack on the rear panel or the trigger key on the front panel IfE T TRIG is not highlighted then the Meter s measurement cycle is triggered automatically by its
64. ge that will power it The Meter is packed ready for use with a line voltage determined at the time of ordering If the selected line voltage 2 3 8845A 8846A Users Manual does not match the power the Meter will be plugged into then the Meter s line voltage setting must be changed and the line fuse possibly replaced Selecting the Line Voltage The Meter will operate on any one of four different input line voltages The set line voltage is visible through the window in the line fuse holder found on the Meter s rear panel To change the line voltage 1 Remove the power cord from the Meter 2 Insert a small screwdriver blade in the narrow recess to the left of the fuse holder and pry to the right until the holder pops out as shown in Figure 2 1 3 Remove the voltage selector block from the fuse holder 4 Rotate the selector block until the preferred voltage rating faces outward 5 Replace the selector block back into the fuse holder Changing the line voltage setting may require a different line power fuse for proper operation Check Table 2 1 for the appropriate fuse for the selected line voltage With the voltage set and appropriate fuse installed replace the fuse holder back into the Meter and reconnect the power cord Replacing the Fuses The Meter employs fuses to protect both the line power and current measurement inputs Line Power Fuse The Meter has a line power fuse in series with the power supply Table 2 1 in
65. he presence or absence of HRH in the display indicates the Meter s ranging mode All functions utilize these keys to control the Meter s range except continuity diode test temperature 8846A only frequency and period which only have a single range Note The secondary display s range is always the same as that of the primary display when the functions are the same Pressing causes the Meter to toggle between auto and manual ranging mode The autorange selected range in use when you enter the manual range mode becomes the selected range The Meter will extinguish HAP when autorange is selected Pressing or causes the Meter to switch from auto to manual ranging and moves appear in the display If the input signal is greater than the selected range can measure the Meter displays ower n ad and sends 9 9000 E 37 over the remote interface In autorange mode the Meter automatically selects the next highest range when the measured value exceeds full scale of the present range If no higher range is available selects the next lower range if the measured value drops below 11 of full scale Navigating the Front Panel Menu The Meter uses a multilevel menu system for the selection of function parameters configuration and features Menu selection and navigation is accomplished with the front panel s five function keys F FR DJ JE DJ and key Labeling of the five function keys is presented across the bottom row of the di
66. he Line Voltage ee ee Re RA RA RA RA RA ee ee ee Re Re RA Replacing the dIE ER EE AE N Connecting to Line Power eie see ee ee ee ee AA RA RA RA GRA AR Re ee ee ee ee T rnmg Power OTi isi sees E E Ee Ee oe GE n Ge Dee EE Ge Oe Ee ee es ee ie ee Adjusting the Bail ee se RA RR RR GR Re ee ee ee RA GRA GRA GRA GRA ee Eni ee ee Installing the Meter in an Eguipment Rack Cleaning the Meter sk oe ee ee ee Re RA GRA oi Ge Re Re S ee ee ee ee 3 Front Panel Operation sei ESE DEERE De eels Wt O MUCH ON ER N EE EE ER Ee Controlsand Indicators sis es Se ee eed Gede athe Gee Dee desea dae Front Panel Feature Description sees sees se RA RA Re Re Re ee ee ee ee Display Panel esse ged dasa DR SR GE Ee SE Se SR ee Ee ee ei GE Ee EE eb ee NES Rear Panel Connectors eise ese se se ee Re GR Ge AR RA Ge ee AA iea sieis Adjusting the Meter s Range se ee ee ee ee GR RA GRA RA RA RA ER ee Navigating the Front Panel MENU esse se se ee ee ee RA GRA RA RA RA RA AE Configuring the Meter for a Measurement esse esse sa ee AA Re Re ee ee ee Setting the Beeper State iss Se Lee SE SEG RS ee Ge ERG GE ke sd EN eg ER eN Ge Ng Setting the Display Resolution ees ok RR ee ee ee ee ee Re Ge Setting the AC Signal Filter 00 0 ccc ea RR Re Re Ge ee ee ee ee ee Re ee Setting Continuity Resistance Threshold and Diode Test Parameters Setting the Default Temperature Scale 8846A Only see RR Enabling High Input Impedance e
67. he Meter factory default settings 3 26 Chapter 4 Making Measurements Title Page Tt O DU CON eerie OR dead chaser seh aeesinens OE EN IE 4 3 Selecting Function Modifiers ccccccccssecsssceseceseceseceeeceeeeseeeseeeeeseeeaeeseeeseeeaaes 4 3 Activating the Secondary Display esse ese se ee ee ee Ge GRA GRA RA GR Re RA AE 4 3 Meastiring ei SA ER OE EE OE OE OE EE 4 4 Measuring DC Voltape iese see ses Ne EER Ke SEER Rek Ne NS Age RE MR GEN BR gese S 4 4 Measuring AC Voltage ui eeue ee Sk GER ES EG ikre Ee ed ee ee ee Ne 4 5 Measuring Frequency and Period ees ee ee ee RA RA RA RA RA Re Re ee ee ee 4 7 Measuring Resistance 3 iii see de GE N ek es Re Ee Se ese EE od SIR apenas 4 7 Making a Two wire Resistance Measurement iese se ee ee ee ee AG 4 8 Making a Four wire Resistance Measurement iese se se ee ee ee 4 8 Medsuririg CUrreTit i ss en see RS SG EG As AR dee O ee ge Kees GE Ge DIE 4 19 Measuring DC Current ees se LES GE Es Se Re ERG Ge os EE candace SE ee er Ee Se ge Ne 4 11 Measuring OE GLO acansedacenaeacesaaeantncahdavancstis 4 12 Measuring Capacitance 8846A only RA RA RR Re Re Re ee ee ee 4 13 Measuring RTD Temperature 8846A only sa sk Re ee ee ee Re GR 4 14 Testing COmtui ity side cea ctetiadeddavoancsateacddbed ERG SG Ee ee Re Dee Ge ee ee Ee Ge Ge Se ee eN 4 15 Checking Diodes EERS EE EES de SE eg GER Se Rek A Ge N ee He sege See ek Se Ke Deeg 4
68. he bottom line of the display as soft key labels The available selections are dependent on the selected function and are described in the Meter function descriptions provided in this Chapter Activating the Secondary Display For most of the Meter s functions an additional measured parameter may appear in the display These additional parameters are available when ZHL MEAS appears over one of the soft keys The secondary measurement may be another parameter of the primary signal e g ac voltage and frequency of one signal or a measurement of another signal made simultaneously with the primary signal e g dc voltage and dc current The range of the secondary display is always automatically controlled To select a secondary measurement 1 Press the soft key labeled 2HD HERE Each additional press of this soft key will cause the secondary display to cycle through the available measurements After the last secondary measurement is shown the next press of this soft key turns the secondary display off Note When switching between Meter functions the secondary display selection for the function you last selected is deactivated the next time that function is selected 4 3 8845A 8846A Users Manual Measuring Voltage The Meter is capable of measuring up to 1000 V dc 750 V ac 8845A or 1000 V ac 8846A A Caution To avoid blowing the current fuses and possible damage to other equipment do not apply voltage to the mete
69. he exception of remote triggering trigger source selection is through the trigger menu found under the measurement setup menu To select a trigger source 1 Press to see the measurement setup menu 2 Press the TE TGGEF soft key to reveal the trigger control selections Front Panel Operation 3 Controlling Trigger Functions Note Setting the Meter to trigger via a remote command is only accessible through the remote interface See the Triggering section in the Programmers Manual for more information on remote triggering Auto Triggering In auto trigger mode the Meter s measurements are triggered by internal circuitry These triggers are continuous and occur as fast as the configuration will allow Auto triggering is the Meter s power on trigger source To return the Meter to auto trigger mode 1 Press 2 Press the soft key labeled TE TIGGER Ifthe Meter is in external trigger mode the soft key label EST TEI will be highlighted in the display 3 Press the soft key labeled EXT TRIS External Triggering In the external trigger mode a Meter measurement starts each time a low true pulse is sensed on the external trigger connector or the front panel trigger key is pressed For each trigger or pulse received the Meter will take the specified number of measurements after the specified trigger delay Note The trigger key is disabled whenever the Meter is in Remote mode To set up for an external trigger 1 Pres
70. ice light stops indicating any activity before removing the USB memory device Powering the 8846A down or removing the USB memory device prematurely can leave the USB memory device unreadable Configuring the Remote Interface Selecting an interface port setting up the ports and selecting the command set the Meter will recognize is accomplished through the Instrument Setup key For information on the commands that will remotely control the Meter refer to the Programmers Manual Checking the Meter s Calibration Date To read the Meter s calibration date 1 Press 2 Press the CAL soft key as shown below 3 25 8845A 8846A Users Manual INSTR fee eon CAL ot STRING i F1 F2 Fs Fa F5 caw034 eps 3 Press the CAL GATE soft key to display the date the Meter was last calibrated 4 Press to go back to the previous menu Note UNLOCK CAL allows entry of a password so authorized personnel can calibrate the Meter or change the CAL USER STRING Note CAL USER STRING can be changed entered after UNLOCK CAL The string also appears on the top line row of the stored readings files Resetting the Meter s Default Settings To reset the Meter s default settings 1 Press to see the instrument setup menu 2 Press the RESET soft key to reset the Meter Note Pressing the reset soft key will restore the Meter to the stored Power up configuration if defined otherwise it will reset to t
71. igit selected press the soft key labeled to decrement the digit or to increment the character The right most character is the multiplier This character can be set to p n u m k M or G 4 Press EMTEF to set the value in the offset register Note Limits and Offset are Math functions that cannot be active simultaneously Using MX B The MX B function provides a means of calculating a linear value using a measured value X and two constants M and B The constant M represents a gain while the constant B represents an offset 8845A 8846A Users Manual To make an mX B calculation 1 Press mre 2 Press the MATH soft key 3 Press the m amp soft key To enter the M value 4 Press the ms soft key To select the digit to adjust press either or gt With the desired digit selected press the soft key labeled to decrement the digit or to increment the character 5 Press ENTER to enter the M value 6 Press BACK to return to the MX B menu To enter the B value 7 Press the amp soft key To select the digit to adjust press either or gt With the desired digit selected press the soft key labeled to decrement the digit or to increment the character The right most character is the multiplier This character can be set to p n u m k M or G Press the EMTEF soft key 9 Press to return to the MX B menu 10 Press the EMAELE soft key to start MX B calculations EMAELE stays
72. iod measurement 1 Press FR If HE is displayed press again to switch the primary display to period 2 Connect the Meter to the signal as shown in Figure 4 1 Note Each press of switches the measurement between frequency and period Function modifiers FFERTLIEE Displays three different gate time selections 0 01 0 1 and 1 second These selections set the minimum amount of time the Meter takes to measure frequency Shorter gate times result in lower measurement resolution 4HE MEAS Cycles the secondary display through the measurement functions listed below and then off When a second measurement function is selected the 2M MEAS soft key label is highlighted Period If a frequency measurement is in the primary display the period of the signal appears in the secondary display when the ZHD MEAS soft key is pressed Measuring Resistance The Meter is capable of making two wire and four wire resistance measurements Two wire measurements are easy to set up and will make accurate measurements in most applications In a two wire resistance measurement both the source current and sensing is done through the INPUT HI and LO terminals A four wire resistance measurement 4 7 8845A 8846A Users Manual will source current through the INPUT HI and LO terminals and use the SENSE HI and LO to measure the resistance Making a Two wire Resistance Measurement To make a two wire resistance measurement 1 Connect the test lea
73. ions Table 3 1 shows the Meter s front panel controls and connectors Table 3 1 Front Panel Controls and Connectors FLUKE 8846A amp 12 DIGIT PRECISION MULTIMETER Tm FREO La Eo 4 J ee N 8845A Only Description Input HI and LO connectors Input connectors for Volts 2 wire Ohms Hz Period Temperature and Capacitance measurements Input connectors source current for 4 wire Ohms measurements All measurements use the Input LO connector as a common input The LO input is isolated and may be safely floated up to 1000 V above earth ground regardless of the measurement type 1000 V is the maximum voltage rating between the Input HI and LO connectors and between each HI and LO input and earth ground Sense HI and LO connectors Sense connectors sense the voltage across the unknown resistance for 4 wire Ohms measurements or provide the DCV reference Input for DCV Ratio measurements Soft keys F1 through F5 Soft keys are used to select various menu options while navigating the Meter s menus Each soft key s function is identified with a label in the bottom row of the display Keys without a label above them are inactive Front Panel Operation 3 Controls and Indicators Table 3 1 Front Panel Controls and Connectors cont Memory key for accessing internal and external memory n containing meter setups and measuremen
74. ke service center Opening the cover of the Meter to make this alteration may void the Meter s warranty C 1 8845A 8846A Users Manual Appendix D Analog Filter Applications Introduction The Meter s analog filter is intended to reduce the presence of external ac when making dc measurements Most applications do not require the use of this filter but in some situations it can be utilized to improve DC measurements A good example of this is using the filter when measuring the DC value of a signal with AC content such as a DC power supply voltage that has significant AC line ripple present The analog filter is not intended to reduce the internal noise within the DMM and usually has no affect in reducing noise when measuring an open circuit in DCI measuring a short circuit in DCV or Resistance or measuring the output of a precision DC calibrator In fact the analog filter may actually add to the noise in these situations and often times offsets the reading Because of the latter phenomena when the analog filter is used the DMM must first be Zeroed in the range NPLC setting and triggering approach used If your application makes it difficult to first ZERO the instrument the offset can be characterized and the typical errors are shown in Tables D 1 through D 3 can be used For those ranges and NPLCs not shown there are usually no additional errors associated with using the analog filter Table D 1 DC Volts Analog Filter
75. lays the first stored reading from the internal file Four soft keys provide the means to scroll through the readings stored in the file The FIT FST soft key displays the first reading in the file while the LAST soft key displays the last reading Use the and soft keys to move forward and backward through the file one reading at a time To recall readings from external memory 8846A Only the memory device must be removed from the 8846A and plugged into a PC where the comma delimited files can be read Each file is labeled MEASOXXX CSV The XXX is the file number starting at 001 and going up to 999 Each file is date and time stamped Storing Meter Configuration Information 3 20 Up to five meter configurations can be stored in the Meter s internal memory The 8846A with optional USB memory installed can store an additional 99 configurations in the external memory To store a meter configuration in the Meter s internal memory 1 Press memory 2 Press the STORE CONF IG soft key as shown below MEMORY STORE t 0 5993 N oe een pene eee eens seamen eee ee er ee eer OO OO EOEO EO caw033 eps 3 Press the STORE INT MEM soft key 4 Press one of the five soft keys labeled with the desired memory location to store the present Meter configuration To store a meter configuration in to optional external memory 8846A Only 1 Press memory 2 Press the STORE CONF IG soft key 3
76. ltage measurement function Settling Considerations iese ek ee When measuring freguency or period after a dc offset voltage change errors may occur For the most accurate measurement wait up to 1 second for the input blocking capacitor to settle Measurement Considerations ees ee ee ee To minimize measurement errors shield inputs from external noise when measuring low voltage low freguency signals 8845A 8846A Users Manual 8846A Accuracy Accuracy is given as measurement Temperature Rai 24 Hour 90 Days 1 Year ae o ge Frequency 93 1 C 23 5 C 23 5 C ep A p 100 mV to 3 5 Hz 0 1 0 1 0 1 0 005 1000 VIE 5 10 Hz 0 05 0 05 0 05 0 005 10 40 Hz 0 03 0 03 0 03 0 001 40 Hz 300 kHz 0 006 0 01 0 01 0 001 300 kHz 1 MHz 0 006 0 01 0 01 0 001 1 Input gt 100 mV For 10 100 mV multiply percent measurement error by 10 2 Limited to 8 X 107 volt Hertz 8845A Accuracy Accuracy is given as measurement Temperature Compensation C Outside 18 to 28 C 24 Hour 90 Days 1 Year Range Frequency 93 4 C 23 5 C 23 5 C 100 mV to 3 5 Hz 0 1 0 1 0 1 0 005 750 V 12 5 10 Hz 0 05 0 05 0 05 0 005 10 40 Hz 0 03 0 03 0 03 0 001 40 Hz 300 kHz 0 006 0 01 0 01 0 001 1 Input gt 100 mV For 10 100 mV multiply percent measurement error by 10 2 Limited to 8 X
77. mperature function is selected the Meter displays temperature measurements based on a preselected default temperature scale To change the default temperature scale 1 Press to see the measurement setup selection menu 2 Press the TEHF LIMI TE soft key to display the temperature scale selection menu Available temperature scales are C for Celsius C F for Fahrenheit F and K for Kelvin K 3 Press the soft key labeled with the desired scale Refer to the Measuring Temperature section in Chapter 4 to make a temperature measurement with the Meter Enabling High Input Impedance The DCV input impedance of the Meter is normally set to 10 MQ Enabling the high input impedance feature allows the input impedance to exceed 10 GQ for the 10 V and lower DCV ranges To enable high input impedance 1 Press to see the Measurement Setup menu Front Panel Operation 3 Using the Analyze Functions 2 Press the MORE soft key Press the HIGH IMFLUT Z soft key The soft key label becomes highlighted to indicate high input Z is activated Press the soft key again to disable the function Using the Analyze Functions The Meter is capable of performing mathematical operations with measured values as well as tracking a series of measurements With the exception of Diode Test and Continuity all Meter functions work with all analysis functions The mathematical functions include statistics limits offset and mX b Meter meas
78. ncluded in individually stored copied configurations Recalling the Power up Configuration In addition to having the power up configuration to set up the Meter at power on the power up configuration can be recalled through the front panel keys To recall the power up configuration 1 Press memory 2 Press the RECALL FOUER LF softkey MEMOR RECALL CONFIG 1 4748mv RECALL RECALL RECALL USB IHT MEM FOWER UP EP ee ee ee Es caw063 eps 3 Press the FECALL CONFIG softkey Note The RECALL POWER UP softkey will only appear when a power up configuration has been saved in the Meter s memory 3 21 8845A 8846A Users Manual Removing the Power up Configuration To remove the Meter s stored power up configuration 4 Press memor 5 Press the STORE CONFIG softkey 6 Press the REMOWE POWER LPF softkey After removing the power up configuration power the Meter down and back up using the rear panel power switch to restore factory default settings Recalling a Meter Configuration To recall a configuration from internal memory 1 Press memory Press the FECALL CONF IG soft key Press the soft key labeled with the memory location CLHF IGA through 2 3 Press the RECALL IMT HEH soft key 4 To recall a configuration from external memory 8846A Only 1 Press memory 2 Press the RECALL CONFIG soft key 3 Press the RECALL LSE soft key The Meter labels the
79. ndicatOrs is sesse EERS Vee Ne Bee Ge Sk De Ge n Re N DE Gee Ee ie 3 4 Front Panel Feature Description sees sees se RA RA GR Re Re ee ee ee ee 3 4 Display SE RE EE OE OE OE EE abated 3 5 Er EUDES IT US N EE ees aea 3 7 Adjusting the Meter s Range see ee ee ee ee Ge RA RA RA RA RA Re EE 3 8 Navigating the Front Panel MENU esse se se ee ee ee GR RA GRA RA RA RA Re ee 3 8 Configuring the Meter for a Measurement iese ese ea AA Re Re ee ee ee 3 8 Setting the Beeper State esse Ke RE sed a E de ee ER Ke ee Kg kg eg 3 8 Setting the Display Resolution ese see se RA RA RA RA ee ee ee ee RA RA 3 9 Setting the AC Signal Filter see se AR Re Re Ge ee ee ee ee Re ee ee 3 9 Setting Continuity Resistance Threshold and Diode Test Parameters 3 19 Setting the Default Temperature Scale 8846A Only ie ed 3 10 Enabling High Input Impedance esse esse esse ee se ae ee ae ee AR Re Re ee ee ee ee ee 3 19 Using the Analyze FuncHONS ee se se ae Ge RA RA RA RA RA Re Re ee ee ee ee ee 3 11 Collecting Statistics on Measurements is se ee ee ee ee ee ee ee RA 3 11 di LAE AE GE EE IN 3 12 Setting an Offset Value ie SR ES ERG Re NG Ke Bee ende ee GR GR Ge Ee Ke sede 3 13 Using MX SR EEE AREAN ESS 3 13 Using Trend Plot ccisccescsesasccevaad chad ES RE thet Ee ee ee ee SEE oe ee eek SS tenants 3 14 Using the Histogram FUNCHON e sees esse ee se ee se ae RA GRA RA Re Re Re ee ee ee ee ee 3 15
80. nts Above 400 MA ees ee se ee Measuring Capacitance ies ss oe ee ee ee AA GRA RA Re Re Re ee ee ee ee ee Temperature Measurements iss ees se eed se ee Ge ar SENEE ee Re AA Ge Re ee ee ee ee Ge ee Diode Testing Connections 0 cccceeceesceeeeseseeceseeseeeceaecaeeeneaecaaeeneeeeceaeeaeeeeenaeeaeees TRIG VO Pin out DescripHON eise se se se ee Ee RA onei nni Re Re ee ee ee ee ee vii 8845A 8846A Users Manual viii Chapter 1 Introduction and Specifications Title Page Bees ele RO AE N EE OE N 1 3 Manual SE ER Se SES Ge Oe EE Ee EG GER EG oe Gee Ee Ge oes Se ES 1 3 About this Manual iese se RA RR RR GR Re ee ee ee ee Re GRA GRA GRA GRA ee AA ee ee 1 4 Safety InFOTMAt ON N E 1 4 General Safety SUMMATY esse see ee ee AA RA GRA GRA RA RA Re Re ee ee RA 1 4 SYrDOIS Hi GE EER ES EE GE DE EE mt ecsianeate 1 6 Instrument Security Procedures cccceccccesseesseesesseceseceseceseeneeeeeeseeeseeeeeneenaes 1 6 BEDR AR OO e TREENER A aR 1 6 Non Volatile MeMmory ccccccesccesscessceesceeceeseeeeneesseeeseesseecseecaaecsaeceaeenaeenaeenes 1 7 Media Memory 8846A Only 1 7 TV E EE E EE 1 7 General Sp cifications susse ERA ae EE R a S 1 9 OE ER EE ER EE 1 9 Bi RE EE N 1 9 IE EN EE dears RE N N 1 9 Environment 5 005 soa ss AE EO a aa E 1 9 Salet ES N Ee EE ER ER Ee SE EE EE aes 1 9 se AN RE EE E 1 9 Triggering ER EE ER AE 1 9 aa AR RE N Math SUE AR OE N Oe ou EE EE
81. og filter Note For best results the filter may require zeroing the function when used RATIO DC measurement voltage divided by dc reference voltage For dc ratio connect the reference HI LO to the Meter s HI LO sense terminals and the measurement voltage to the Meter s HI LO input terminals Note the specified measurement range applies to the input terminals only Note For best results in RATIO the two input commons must be shorted at the Meter terminals The analog filter A FLTR should be off ZHD MEAS Cycles the secondary display through the measurement functions listed below and then off When a second measurement function is selected the ZHL MEAS soft key label is highlighted VAC Displays the ac signal riding on the measured de voltage Note DCV ACV dual mode should not be used at frequencies below 20 Hz See the Range Keys section in Chapter 1 to learn how to switch between auto and manual ranging Measuring AC Voltage To make an ac voltage measurement 1 Press cv The ac voltage icon V will appear in display as shown below 0 3861 mv dB dem FILTER 210 HEAS FA F2 Fs D F4 Fs caw022 eps 2 Connect the test leads to the Meter s input as shown in Figure 4 1 3 Connect the test leads to the circuit and read the measured voltage in the Meter s display 4 5 8845A 8846A Users Manual Function modifiers Filter ZAG MEAS 4 6 Displays the
82. or service the Meter General Safety Summary This instrument has been designed and tested in accordance with the European standard publication EN 61010 1 2001 and U S Canadian standard publications UL 61010 1A1 and CAN CSA C22 2 No 61010 1 The Meter has been supplied in a safe condition This manual contains information and warnings that must be observed to keep the instrument in a safe condition and ensure safe operation To use the Meter correctly and safely read and follow the precautions in Table 1 1 and follow all the safety instructions or warnings given throughout this manual that relate to specific measurement functions In addition follow all generally accepted safety practices and procedures required when working with and around electricity CAT I equipment is designed to protect against transients from high voltage low energy sources such as electronic circuits or a copy machine CAT II equipment is designed to protect against transients from energy consuming equipment supplied from the fixed installtion such as TVs PCs portable tools and other houseshold appliances Introduction and Specifications 1 Safety Information Table 1 1 Safety Information A A Warning To avoid possible electric shock personal injury or death read the following before using the Meter e Use the Meter only as specified in this manual or the protection provided by the Meter might be impaired Do not use the Meter in wet environmen
83. pF to 100 mF 0 1 F To make a capacitance measurement 1 Press An example of the capacitance display is shown below 0 000 nF Se BEEN ee caw10f eps 4 13 8845A 8846A Users Manual Measuring RTD Temperature 8846A only 4 14 2 With the leads open press 20 3 Connect the Meter s test leads as shown in Figure 4 6 Figure 4 6 Measuring Capacitance Pe 400 mA De 1000V CATT 600V CAT II barid Pe INPUT SENSE VO de awn TN FUSED oO REAR FRONT caw027 eps Refer to the Range Keys section in Chapter 3 of this manual for information on how to adjust the measurement range The Fluke 8846A is capable of measuring temperatures between 200 C and 600 C using Resistance Temperature Detectors RTDs To make a temperature measurement 1 Connect the RTD to the Input HI and LO then the SENSE HI and LO connectors as shown in Figure 4 7 Figure 4 7 Temperature Measurements SENSE Awn INPUT VAs 2 Press to display the measured temperature as shown below caw028 eps Making Measurements 4 Testing Continuity 246 645 F AWIRE RTD 285 Ro ALPHA 2ND MEAS So EE EYE EI caw11f eps To change the temperature scale refer to the Setting the Default Temperature Scale section in Chapter 3 of this manual Available scales are Celsius Fah
84. ple each time a trigger is received if in wait for trigger state However you can set the Meter to take a specified number of measurements for each trigger To set the number of samples per trigger 1 Press l 2 Press the soft key labeled TRIGGER 3 Press the soft key labeled SHHFLES F The number of samples per trigger can be set between 0 and 50000 samples 4 To select a specific digit to adjust press either or With the desired digit selected press the soft key labeled to decrement the digit or to increment the digit 5 With the desired delay set press the soft key labeled ENTER Understanding the Measurement Complete Signal The trigger port on the Meter s back panel provides a low true pulse at the completion of each Meter measurement See the specifications section for more details on this signal Accessing and Controlling Memory The Meter stores readings and meter configuration information using internal and external memory 8846A only On the 8846A external memory connects through the USB port on the front panel of the Meter Optional Memory in various storage capacities is available from Fluke See the Options and Accessories section in Chapter 1 for Fluke part numbers In addition to storing and recalling readings and configurations a memory management function is available to delete files To access the Memory functions press the key The memory menu appears over the five
85. ptions and Accessories 1 7 Input Impedance Automatic 3 10 P Inspecting Meter 2 3 Period measurement Product Description K Keys R Rangel Range Key 3 8 Soft Readings Soft labels for 3 6 recalling 3 20 storing Rear panel Tiniis Testte Recalling configurations setting of limits 3 12 Recalling readings Resistance measurements Using irel4 8 Line Voltage Selection 2 4 oie Resistance Measurements 4 7 M RTD Temperature measurements 4 14 Manual set 1 3 Math functions Q e ting Safety Information 1 4 Offset Secondary displa Math Operations activation of 4 3 Measurement Complete eee Metepl23 Monitoring of 4 18 KEER ions l Understanding of 3 18 taking of 3 11 sia psa Storing configurations AC current g gu Storing Meter 2 3 Capacitan Storing readings Current Symbols 1 6 DC current DC Voltage T Frequenc Temperature setting default scale Temperature measurements Resistance 2 wire 4 8 Time setting of 3 24 4 wire 4 8 TrendPlot Temperature Trigger functions 3 16 Voltage 4 4 Trigger sources 3 16 Memory Triggering Configuration Autol3a7 ce 3 16 Choosing a so Storing External management of VO jack Reading recall setting a delay Reading storage 3 18 Setting a delay Memory Access to Setting number of samples 3 18 Meter errors Setting the mod
86. r s input until the test leads are properly connected to the input and the proper voltage function selected Measuring DC Voltage To make a dc voltage measurement 1 Press ov The dc voltage icon V will appear to the right of the displayed value as shown below 0 001698Vv RATIO D FLITE A FLTE 2HO MERS F F2 Fs Fa F5 caw021 eps 2 Connect the test leads to the Meter s inputs as shown in Figure 4 1 Connect the test leads to the circuit and read the measured voltage in the Meter s display INPUT SENSE VO rr HEI awn HI A Circuit yei aov Under Test jA N FUSED AR ie Figure 4 1 Input Connections for Voltage Resistance and Freguency Measurements caw019 eps Function modifiers LTF A filter for quieting noisy measurments This filter averages readings to reduce reading noise when in immedicate trigger mode or when in trigger mode with an unending number of triggers selected The filter Making Measurements 4 Measuring Voltage is only available for dc functions at rates slower than 1 PLC The number of readings averaged by the digital filter varies with dc function and range A FLTE A 3 pole analog filter for improving noise immunity The filter is active when this soft key label is highlighted and will increase stabilization time of the measurement See Appendix D for more information on when to use the anal
87. re for Revision Level sesse se ee ee ee ee Re Adjusting Display Brightness ccccescesscsssceesceeeeseeeeeceeeeeeeaeecseceseenseenaeenes Setting the Meter s Date and Time sees ee ee ee ee ee ee Re RA MEE Ee RA EE EA R USB Storage Capacity and Write Time sesse sees Re Re Re ee ee ee ee USB Memory Device Compatibility and Special Instruction Configuring the Remote Interface iese se ee Ee RA RA AR Re ee ee ee Checking the Meter s Calibration Date se se ee ee AA GR Re ee ee ee Resetting the Meter s Default Settings iese see sa RA RR Re Re ee ee 3 2 Front Panel Operation Introduction Introduction The Meter can be controlled either by sending commands through one of its communication interfaces or by manually operating its front panel controls This chapter explains the function and use of the controls and indicators located on the front and rear panels of the Meter Operating the Meter through its computer interfaces is covered in the Programmers Manual The following features are not available in OutGuard SW versions earlier than 2 0 DCI with DCV dual function DCV Ratio 400 mA range and digital filter Also the function softkey positions for earlier releases are slightly different than illustrated To view the OutG SW version 1 Press 2 Press the softkey labeled 3 Press the softkey labeled 3 3 3 8845A 8846A Users Manual Controls and Indicators Front Panel Feature Descript
88. renheit and Kelvin Refer to the Adjusting the Meter s Range section in Chapter 3 of this manual for information on how to adjust the measurement range Function modifiers E Switches the measurement input connectors to 4 wire measurement for 4 wire RTDs 4 wire RTDs make more accurate measurements ETE 295 Default RTD type All coefficients are predefined FO Used to select a different value of RTD resistance at 0 C ALPHA Used to set the first coefficient of the Calendar Van Dusen equation 4HE HER Cycles the secondary display through the measurement functions listed below and then off OHMS Displays the resistance of the RTD 2 wire resistance is used when in 2 wire temperature mode and 4 wire resistance when the Meter is in 4 wire RTD mode Testing Continuity Continuity testing determines whether a circuit is intact i e has a resistance less than the threshold The threshold is selectable between 1 and 1000 Q To perform a continuity test 1 Press on the 8846A or on the 8845A An example of the continuity display is shown below OPEN m caw12f eps Connect the test leads as shown in Figure 4 1 Note The Beeper cannot be disabled in continuity Pressing BEEPER OFF turns off the beeper for errors To set the threshold value refer to the Setting the Continuity Threshold Resistance section in Chapter 3 of this manual Function modifiers 4 15 8845A 8846A Users Manual
89. ro ANL2 MATH PESONN HIGH ot 0 69897 V v PETTE em eee oOo caw029 eps When testing from the front panel the Meter displaysi in the secondary display when the measurement is between the high and low limit It displays HIGH or LOW as shown above for each measurement that exceeds the upper or lower limit The beeper will beep once if enabled for the first measurement outside the limits after an IF measurement For remote operation the Meter can be set to generate a service request SRQ on the first occurrence of a measurement outside the limits See the Programmers Manual for information on enabling SRQ for this test To set the high and low limits through the front panel 1 Press fom 2 Press the MATH soft key 3 Press the LIMITS soft key 4 Press the HIGH or LOL soft key as shown above to set the high or low limit respectively To select the digit to adjust press either or Front Panel Operation 3 Using the Analyze Functions With the desired digit selected press the soft key labeled to decrement the digit or to increment the character The right most character is the multiplier This character can be set to p n u m k M or G Press ENTE to set the selected limit i 6 Press EMHBEL E to start the limits testing Note Since the high and low limits are independent of each other both high and low limit conditions could be satisfied by a measurement
90. rrupted readings file from internal memory to an already inserted USB memory device 1 Press memory 2 Press the INIT HEAS TO USE soft key The copy process will take several seconds To erase USB memory refer to the Media Memory section in Chapter 1 To clear internal memory contents 3 Press memory 4 Press the MAHAGE MEMORY soft key as shown below MEMOR MAMAGE MEM 9 30011 v USE IHT MEAS ERASE STATUS TO USE MEMORY Fi F2 if Fs Fa Fs caw062 eps 5 Press the ERASE MEMGR Y soft key 6 Ifyou are sure you want to clear all stored readings all stored configurations the user string and the hostname from internal memory press the EF ASE soft key If not press the CAMITEL soft key To check the amount of external memory available 8846A Only 1 Press memory 2 Press the MANAGE 3 Press the USE STATUS soft key MEMORY soft key After a few seconds the Meter displays the total external memory the amount of external memory used and free external memory Controlling System Related Operations Identifying Meter Errors When the Meter detects an error the error annunciator item 5 in Table 3 2 is illuminated and the beeper sounds A list of possible Meter errors can be found in Appendix B of this manual To read the error or errors 1 Press sear Press Y 5 2 3 Press ER RGF 4 The first error if there is more than one
91. s 2 Press the soft key labeled TRIGGER 3 Press the soft key labeled EXT TRIG The Ext Trig soft key label will remain highlighted to indicate the Meter is in external trigger mode To return to auto trigger mode press ET TRIG again If the Meter does not receive a trigger for a few seconds a TF IG annunciator illuminates indicating the Meter is waiting for a trigger and a lightning bolt appears indicating the Meter does not know what voltage is applied to the terminals Each press of the trigger key or an active low pulse on the trigger port will initiate a measurement Setting the Trigger Delay A Meter measurement can be delayed a set amount of time after receiving a trigger This feature may be useful when you need to wait for a signal to settle before measuring it When a trigger delay is specified that delay is used for all functions and ranges To set a trigger delay 1 Press 2 Press the soft key labeled TE TGGER 3 Press the soft key labeled SET The trigger delay can be set between 0 and 3600 seconds with a resolution of 10 microseconds BELAY 3 17 8845A 8846A Users Manual 4 To select a specific digit to adjust press either or With the desired digit selected press the soft key labeled to decrement the digit or to increment the digit 5 With the desired delay set press the soft key labeled ENTER Setting the Number of Samples Normally the Meter takes one measurement or sam
92. s adjustable to provide two viewing angles To adjust its position pull the ends out to a hard stop about 1 4 inch on each side and rotate it to one of the four stop positions shown in Figure 2 4 To completely remove the handle adjust it to the vertical stop position and pull the ends all the way out caw017 eps Figure 2 4 Bail Adjustment and Removal Installing the Meter in an Eguipment Rack The Meter is mountable in a standard 19 inch rack using a rack mount kit See the Options and Accessories section in Chapter for ordering information In preparation for rack mounting remove the bail see the Adjusting the Bail section above and the front and rear protective boots Then refer to the instructions provided with the Rack Mount Kit to mount the Meter 2 8 Preparing the Meter for Operation Cleaning the Meter Cleaning the Meter AA Warning To avoid electric shock or damage to the Meter never get water inside the meter N Caution To avoid damaging the Meter s housing do not apply solvents to the Meter If the Meter requires cleaning wipe it down with a cloth lightly dampened with water or a mild detergent Do not use aromatic hydrocarbons chlorinated solvents or methanol based fluids when wiping down the meter 2 2 9 8845A 8846A Users Manual 2 10 Chapter 3 Front Panel Operation Title Page rt OU Ct ON RE N e EE EE EE EE 3 3 Controls and I
93. selecting the function and connecting the signal to the Meter s input 2 With the Meter taking measurements press we 3 Press HISTOGRAM to start the session The display will start adjusting the bar graph as the number of readings accumulates The mean and standard deviation values also change in accordance with the collected readings To start the histogram session over press the amp TOF soft key followed by the RESTART soft key To stop the histogram session press or the STOF soft key Controlling Trigger Functions The Meter s trigger functions allows you to select a measurement trigger source set the number of measurements samples per trigger and set the delay time between receiving the trigger and the start of a measurement In addition the trigger function provides a measurement complete signal on the trigger port on the rear panel See item 5 in Table 3 3 Triggering the Meter remotely through one of its communication interfaces is covered in the Programmers Manual The following sections discuss triggering the Meter automatically internal trigger or externally using the trigger key on the front panel and the trigger connector on the rear panel Setup and control of the trigger function is accessible through the Meter s Measurement Setup key Choosing a Trigger Source There are four possible sources for triggering a Meter measurement automatic front panel trigger key external and remote With t
94. soft keys RECALL CONFIG RECALL READING STORE CONFIG STORE READINGS and HAMHGE MEMORY Storing Readings in Memory The Meter will hold up to 9999 readings in one internal memory file The 8846A with external memory will hold 999 additional readings files each of which will store up to 10000 readings To store readings in internal memory 1 Press memory Front Panel Operation 3 Controlling Trigger Functions A m mn mn mn m m m m re rd ee se eee RECALL RECALL STORE Y STORE MANAGE CONFIG READING CONFIG IREADINGS MEMORY a ED Ne HE E caw032 eps 2 Press the amp 3 If not already highlighted press the TMT IF soft key 4 Press the EAMFLES soft key 5 To adjust the number of samples press either or to select a digit With the desired digit selected press the soft key labeled to decrement the digit or to increment the character When 2 Meas is enabled each primary and secondary reading is counted as a sample and appears in a separate line row in the readings file 6 With the desired number of samples set press the EMTEF soft key to return to the store readings menu 7 Press the 3T AR FT soft key to initiate measurement storing The THF T soft key will change to TOF which can be pressed to stop the storage process When the requested number of samples have been stored the soft key label changes back to TART The MEM annunciator in the
95. splay and is dependent on which function is selected The following sections Configuring the Meter for a Measurement and Chapter four s instructions on Making Measurements cover the use of the Meter s menu system Configuring the Meter for a Measurement The Meter s display resolution reading rate trigger mode continuity threshold beeper on off input impedance setting default temperature scale and dBm reference are adjustable through the Measurement Setup function Setting the Beeper State 3 8 The Meter will emit a tone when a limit is exceeded during limit testing and when a forward biased diode is measured during diode testing To disable the beeper for these two conditions 1 Press i 2 Press the softkey labeled HORE If the softkey labeled BEEF OH is highlighted press it to disable the beeper Note Disabling the beeper has no effect on the tone when an error is generated during remote operation or when the continuity threshold is exceeded during continuity testing Front Panel Operation 3 Configuring the Meter for a Measurement The beeper state is stored in non volatile memory and does not change when the Meter is turned off or after a remote interface reset The beeper is enabled when the Meter is shipped from the factory Setting the Display Resolution The steps for setting the Meter s displayed resolution varies depending on the selected function The dc volts de current and ohms func
96. sse esse esse ss se ae ee ae ee Re Re Re Re ee ee ee ee ee Using the Analyze FuncHONS ee ese sa RA RA RA RA RA GR AR Re ee ee ee ee Collecting Statistics on Measurement ese ee ee RA RA RA RA Re ee ee dead AE GR N Setting an Offset Value oo ee ae RA RA GRA RA RR GR Re ee ee ee ee ee ee AE APE RR RE EE EE OE SE sede ie EA EE EE EN Using the Histogram FUNCHON sees esse esse ee ee ae Ge ae GRA GRA Re Re Re ee ee ee ee Controlling Trigger Functions iese se ee ee ee RA RA RA RA AR Re ee ee ee ee Choosing a Trigger SOUICE c cccecccecseessceeeeeseeesseeseceseceeeeeeeseseeeaeesseeseeeaaes Setting the Trigger Delay ie ee see ae GR AR Re Re ee ee ee ee Re Re Re Setting the Number of Samples iese sa sa RR ee ee AA Re RA RA Understanding the Measurement Complete Signal ese se se ee ee Accessing and Controlling MEMOTY ee ee ee ae ae RA RA GRA RA RA RA Ge Re Ee Storing Readings in MEMOTY iese sea ea AR GR Re ee ee ee ee ee Re Re Recalling Readings from Memory iese esse esse ea RA RA RR Re Re ee ee ee Storing Meter Configuration Information ee iese ese ese se ee ee ee GR Ge ee ee Storing the Power up ConfiguratHON iese sees see se ee ee ee ee ee ee Re ee ee Recalling the Power up Configuration sesse ese se RA RA RA RA Re ee ee Removing the Power up ConfiguratiON esse see sae sek Re Re Re ee ee ee ee Recalling a Meter Configuration e ee see ee ee Ga RA RR RR Re ee e
97. t See Appendix D for more information on when to use the analog filter Note For best results the filter may require zeroing during the current function Cycles the secondary display through the measurement functions listed below and then off When a second measurement function is selected the HD MEAS soft key label is highlighted ACI Displays the ac current riding on the dc current measurement DCI DCV Displays the dc current and de voltage present on the input To measure the voltage and current of an input signal requires three leads The voltage and current measurement must share the same common lead The resistance of the common lead combines with a small amount of internal resistance in the meter to cause an IR drop that affects the accuracy of the voltage measurement Depending on the circumstance this effect can be substantial As an example 20 mQ of lead resistance can cause more than 20 mV of additional error atl A Note Measurement of ac signals below 20 Hz is not recommended in DCI ACI dual mode Use the ACI function for this measurement Measuring AC Curren t To measure ac current 1 Connect the test leads between the Meter s input connectors and the measured circuit as shown in Figure 4 4 or Figure 4 5 based on the anticipated level of current 4 12 Making Measurements Measuring Capacitance 8846A only 2 Press aa O OBBBuA oan eee HEESE EER SERE FO EO EO EO EO o
98. t jack contacts to provide a four wire connection Ground tab a caw061 eps Figure A 1 2X4 Wire Test Leads AA Warning To avoid electric shock and possible damage to the Meter use the 2X4 Wire test leads as specified in the instruction sheet that comes with the probes Inspect the test leads before use Do not use them if insulation is damaged or metal is exposed Check the test leads for continuity Replace damaged test leads before using the Meter 8845A 8846A Users Manual Appendix B Errors Introduction Listed below are the error messages the Meter uses to indicate a problem AC Line frequency too high Invalid calibration step number TRG GET received but was ignored 488 2 I O deadlock 488 2 interrupted query 488 2 query after indefinite response 488 2 unterminated command A fatal error occurred configuring the serial port A fatal error occurred opening the serial port AC Line frequency too low Acknowledgement queue full ACPOLE all CAPDAC settings are too high ACPOLE all CAPDAC settings are too low ACPOLE no CAPDAC setting is close enough Bad CRC Bad keyword Bad parameter value Cal reference value out of tolerance Cal secured CAL only works if you are calibrating Calibration Aborted Calibration measurements out of tolerance Calibration steps out of sequence B 1 8845A 8846A Users Manual CALibration DATE not supported for the 8846A Can t get 1V 10V DC linearization constants CCO
99. tions set the resolution based on the power line cycle PLC setting AC volts ac current capacitance and temperature set resolution using a low medium or high setting To set the Meter s display resolution dc volts dc current and ohms 1 Press to see the measurement Setup menu 2 Press the soft key under the RESOLUTION 0726 FLE label to reveal the resolution selection menu These choices determine the displayed resolution 4 5 and 64 digits and the measurement cycle time in reference to the power line frequency in cycles PLC a measurement using one power line cycle A D integrate period For 60 Hz power a measurement is almost once every 60 of a second or 16 6666 milliseconds 3 Press the soft key labeled with the desired resolution Note Some of the faster PLC choices are not available when 2 MEAS or DCV Ratio are selected To set the Meter s display resolution for ac volts ac current capacitance and temperature 1 Press to see the measurement Setup menu 2 Press the soft key under the FE SOL LITHM label to reveal the resolution selection menu number of digits displayed will depend on the selected function and the Meter s range 3 Press the soft key labeled with the desired resolution Setting the AC Signal Filter There are three ac filter settings that can be employed to help make more accurate measurements 3 Hz Slow 20 Hz and 200 Hz For the ac volts and ac current functions a filt
100. ts Inspect the Meter before using it Do not use the Meter if it appears damaged Inspect the test leads before use Do not use them if insulation is damaged or metal is exposed Check the test leads for continuity Replace damaged test leads before using the Meter Verify the Meter s operation by measuring a known voltage before and after using it Do not use the Meter if it operates abnormally Protection may be impaired If in doubt have the Meter serviced e Whenever it is likely that safety protection has been impaired make the Meter inoperative and secure it against any unintended operation Have the Meter serviced only by qualified service personnel Do not apply more than the rated voltage as marked on the Meter between the terminals or between any terminal and earth ground Always use the power cord and connector appropriate for the voltage and outlet of the country or location in which you are working Remove test leads from the Meter before opening the case Never remove the cover or open the case of the Meter without first removing it from the main power source Never operate the Meter with the cover removed or the case open Use caution when working with voltages above 30 V ac rms 42 V ac peak or 42 V dc These voltages pose a shock hazard Use only the replacement fuse s specified by the manual Use the proper terminals function and range for your measurements Do not operate the Meter around explosive gas
101. ts See the Accessing and Controlling Memory section for more information USB Port Connection for optional memory device to store meter readings Standby key to turn off the display While in standby the Meter will not respond to remote or front panel commands When taken out of standby the Meter sets itself to its power up configuration Instrument Setup key Accesses communication interface selection and setup remote command set system settings and meter reset Measurement Setup key Accesses to resolution setting trigger functions temperature setup dBm reference selection continuity settings and other measurement related parameters Trigger key Triggers measurement when trigger is set to external triggering See the Controlling Trigger Functions section later in this chapter to learn how to use the trigger key TRIG to control the Meters measurement cycle Analyze key Accesses math functions Statistics TrendPlot and Histogram Zero key Uses the present reading as an offset value to create relative readings Meter function keys Selects meter function between volts dc volts ac amp dc amps ac ohms continuity diode test frequency period capacitance M and temperature Mm For the 8845A the lower four keys select different functions see inset Range keys Selects between manual and auto range mode Also increases or decreases the range when in manual ranging mode Back key Backs up one l
102. ual covers operating the Meter from a PC or controller 1 3 8845A 8846A Users Manual About this Manual This is the Users Manual for the 8845A and 8846A Digital Multimeters hereafter referred to as the Meter It contains all of the information a new user will need to operate the Meter effectively The manual is divided into the following chapters Chapter Introduction and Specifications provides information on how to safely use the Meter standard and optional accessories and specifications Chapter 2 Preparing for Operation provides information on setting the Meter s line voltage connecting it to a power source and turning the Meter on Chapter 3 Front Panel Operation introduces the controls and connections on the front and rear panels of the Meter Chapter 4 Making Measurements provides detailed information on using the Meter to make electrical measurements Appendices Safety Information This section addresses safety considerations and describes symbols that may appear on the Meter or in the manual A AA Warning statement identifies conditions or practices that could result in injury or death A A Caution statement identifies conditions or practices that could result in damage to the Meter or equipment to which it is connected AA Warning To avoid electric shock personal injury or death carefully read the information under Safety Information before attempting to install use
103. urement tracking is performed through the TrendPlot and Histogram functions To access the analyze functions press Collecting Statistics on Measurements The statistical analysis function displays the minimum and maximum measurements of a series of Meter measurements The Meter also calculates an average and a standard deviation value for the same measurement series This function also provides control over the starting and stopping of the measurement series Starting the Measurement Collection To start the statistics process 1 Press to display the Meter s analysis menu 2 Press the STATS soft key The Meter starts collecting data immediately Individual readings are never stored in the Meter but each reading is added to the Average and Standard Deviation calculation At the same time the measured value is compared to the values stored in the minimum and maximum registers and overwrites one of these values if it is lower than the minimum value or greater than the maximum value While a series of measurements are being collected the process can be stopped by pressing the S TUF soft key To start calculations on another series of measurements press the FESTART soft key Reading the Min Max Std Dev and Avg Values As the measurements are collected the display is continually updated with the latest statistical data as shown below ANALYZE SS Min 33 Sru Aue 392 4H 57u f Max 691 96764 shew 123 470 COHTIH
104. vapor or dust e When using probes keep your fingers behind the finger guards e When making electrical connections connect the common test lead before connecting the live test lead when disconnecting disconnect the live test lead before disconnecting the common test lead Disconnect circuit power and discharge all high voltage capacitors before testing resistance continuity diodes or capacitance Before measuring current check the Meter s fuses and turn OFF power to the circuit before connecting the Meter to the circuit e When servicing the Meter use only specified replacement parts 8845A 8846A Users Manual Symbols Table 1 2 is a list of safety and electrical symbols that appear on the Meter or in this manual Table 1 2 Safety and Electrical Symbols Risk of danger Important Display ON OFF information See manual Hazardous voltage Voltage gt 30 V dc Earth ground or ac peak might be present ac Alternating Current TEE Capacitance Fuse AC or DC Alternating or Direct Current Digital signal Continuity test or continuity beeper OE Maintenance or Service tone Potentially hazardous voltage IEC 61010 Overvoltage installation or h CAT II measurement Category 2 Static awareness Static discharge Do not dispose of this product as unsorted A can damage part s municipal waste Go to Fluke s website for recycling information Instrument Security Procedures This section describes
105. y However it is also capable of displaying 6 digits Its function is to display the results of a secondary measurement associated with the primary measurement In the example shown the secondary display shows the frequency of the ac voltage measurement The Soft Key labels row three identify the functions of the five soft keys just below the display Front Panel Operation Controls and Indicators Rear Panel Connectors Table 3 3 indicates the connections on the rear panel and describes their use Table 3 3 Rear Panel Connectors 1 4A SLOW I SE 100 120VAC 47 44 Hz INPUT SENSE N tiga SLOW F SE 220240 vac 25 VA NX VO HEN awn CAUTION A A FOR FIRE PROTECTION REPLACE HI A HI ONLY WITH A 250V FUSE AS STATED IN MANUAL P 1000V CATI aah g I Ad 300V CAL STICKER LO LO f MEd N FuseD V TRIG VO 400 mA c EE c X SERIAL TAG ae eee FLUKE CORPORATION NO INTIVRNAL USER SERVICEABLE PART MADE IN USA MUST BE CONNEC JED REFER SERVI E TO QUALIFIED SEWVICE PERSCNNEL www fluke com 1 10 A current measurements can not be performed through the rear panel connectors tem EE Notes 3 3 7 8845A 8846A Users Manual Adjusting the Meter s Range The range keys Afanc Qy switch the Meter between auto and manual ranging T

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