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Fluke ScopeMeter 19 B Series, Service Manual

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Fluke ScopeMeter 19 B Series Service Manual Download Page 81

 

Disassembling the Test Tool

 

 

6.2. Disassembly & Reassembly Procedures

 

6

 

  

6-5 

ST8738

1

10

8

11

24

23

22

12

13

15

16

14

18

17

20

19

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3
4

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(4x)

(2x)

(2x)

(2x)

(2x)

(2x)

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7

 

ST8738.WMF 

Figure 6-5. Final Assembly Details 

6.2.5 Removing the Main PCA Unit and the Fan 

Caution 

To avoid contaminating the flex cable contacts with oil from 

your fingers, do not touch the contacts (or wear gloves).  

Contaminated contacts may not cause immediate instrument 

failure in controlled environments.  Failures typically show up 

when contaminated units are operated in humid areas. 

Summary of Contents for ScopeMeter 19 B Series

Page 1: ...peMeter models 192B 196B 199B 192C 196C 199C 215C 225C Service Manual PN 4822 872 05391 September 2002 rev 2 Oct 09 2002 2009 Fluke Corporation All rights reserved All product names are trademarks of their respective companies ...

Page 2: ...o locate an authorized service center visit us on the World Wide Web http www fluke com or call Fluke using any of the phone numbers listed below 1 888 993 5853 in U S A and Canada 31 40 2675200 in Europe 1 425 446 5500 from other countries ...

Page 3: ...he test tool 4 4 4 4 2 Navigating through menu s 4 4 4 4 3 Creating Test Tool Setup1 4 5 4 5 Display and Backlight Test 4 5 4 6 Scope Input A B Tests 4 7 4 6 1 Input A B Vertical Accuracy Test 4 7 4 6 2 Input A B DC Voltage Accuracy Test 4 9 4 6 3 Input A B AC Voltage Accuracy Test LF 4 11 4 6 4 Input A B AC Coupled Lower Frequency Test 4 12 4 6 5 Input A and B Peak Measurements Test 4 13 4 6 6 In...

Page 4: ... 5 6 Final Calibration 5 8 5 6 1 Input A LF HF Gain 5 8 5 6 2 Input B LF HF Gain 5 9 5 6 3 Input A B LF HF Gain 5 11 5 6 4 Input A B Position 5 12 5 6 5 Input A B Volt Gain 5 13 5 6 6 DMM Volt Gain 5 14 5 6 7 Input A B and DMM Zero 5 15 5 6 8 DMM Ohm Gain 5 16 5 6 9 Calculate Gain 5 17 5 7 Save Calibration Data and Exit 5 17 5 8 Probe Calibration 5 19 6 Disassembling the Test Tool 6 1 6 1 Introduc...

Page 5: ...4 15 4 7 Phase Measurement Verification Points 4 16 4 8 Input A Trigger Sensitivity Test Points 4 18 4 9 HF AC Voltage Verification Points 4 19 4 11 HF AC Voltage Verification Points 4 21 4 12 Meter Volts dc Measurement Verification Points 4 28 4 13 Meter Volts AC Measurement Verification Points 4 29 4 14 Resistance Measurement Verification Points 4 31 5 1 Input A HF LF Gain Calibration Points 5 9...

Page 6: ...Fluke 19xB 19xC 2x5C Service Manual iv ...

Page 7: ...race for NTSC line 262 Negative Video 4 24 4 16 Test Tool Input A to TV Signal Generator 4 25 4 17 SC600 Marker Pulse 4 26 4 18 Test Tool Meter Ext Input to 5500A Normal Output 4 27 4 19 Test Tool Input A to 5500A Normal Output 4 Wire 4 31 5 1 Version Calibration Data 5 3 5 2 Display Test Pattern 5 7 5 3 5500A SCOPE Output to Test Tool Input A 5 8 5 4 5500A SCOPE Output to Test Tool Input B 5 10 5...

Page 8: ......

Page 9: ...1 Chapter 1 Safety Instructions Title Page 1 1 Introduction 1 3 1 2 Safety Precautions 1 3 1 3 Caution and Warning Statements 1 3 1 4 Symbols 1 3 1 5 Impaired Safety 1 4 1 6 General Safety Information 1 4 ...

Page 10: ......

Page 11: ...arning and caution statements where they apply will be found throughout the manual Where necessary the warning and caution statements and or symbols are marked on the test tool 1 3 Caution and Warning Statements Caution Used to indicate correct operating or maintenance procedures to prevent damage to or destruction of the equipment or other property Warning Calls attention to a potential danger th...

Page 12: ... measurements or shows visible damage 1 6 General Safety Information Warning Removing the test tool covers or removing parts except those to which access can be gained by hand is likely to expose live parts and accessible terminals which can be dangerous to life The test tool shall be disconnected from all voltage sources before it is opened Capacitors inside the test tool can hold their charge ev...

Page 13: ...2 1 Chapter 2 Characteristics For the specifications please refer to the ScopeMeter test tool Users Manual Chapter Specifications ...

Page 14: ...2 2 ...

Page 15: ...3 1 Chapter 3 List of Replaceable Parts Title Page 3 1 Introduction 3 3 3 2 How to Obtain Parts 3 3 3 3 Final Assembly Parts 3 4 3 4 Main PCA Unit Parts 3 6 3 5 Accessories 3 8 ...

Page 16: ......

Page 17: ...Contact an authorized Fluke service center To locate an authorized service center refer to the second page of this manual back of the title page In the event that the part ordered has been replaced by a new or improved part the replacement will be accompanied by an explanatory note and installation instructions if necessary To ensure prompt delivery of the correct part include the following inform...

Page 18: ...splay unit B W Fluke 192B 196B 199B Remark The Display unit does not include the flat cable 1638230 2042528 Flat cable for display unit both versions 2042596 8 Display mounting frame assy 1668063 9 Input cover including screws 1285765 10 EJOT Pt screw 1284966 11 Main PCA unit The Main PCA is only available to Fluke Service Centers due to the programming that is necessary after installation 12 Hang...

Page 19: ...List of Replaceable Parts 3 3 Final Assembly Parts 3 3 5 ST8738 1 10 8 11 24 23 22 12 13 15 16 14 18 17 20 19 9 3 4 2 5 6 4x 2x 2x 2x 2x 2x 21 7 st8738 wmf Figure 3 1 Final Assembly Details ...

Page 20: ...R channel bottom SCOPE channel A top SCOPE channel B top SCOPE channel A B bottom 1285989 1285992 1286007 1286018 1286029 7 Screw Torx M3x20 1285101 8 Shielding cover 1286034 9 Combi screw Torx M3x10 screw split spring 1285046 10 Hexagonal spacer M3x16 5 1285199 Note The Scope channel A and B input attenuator top shieldings are provided with a plate spring The spring end is provided with heat cond...

Page 21: ...List of Replaceable Parts 3 4 Main PCA Unit Parts 3 3 7 ST8676 wmf Figure 3 2 Main PCA Unit rubber spacer 16gray jpg Figure 3 3 Rubber Spacer on Shielding Box Assy ...

Page 22: ...gned for use with the Fluke ScopeMeter 190 series test tool The set includes the following items not available separately 10 1 Voltage Probe gray 4 mm Test Probe for Probe Tip gray Hook Clip for Probe Tip gray Ground Lead with Hook Clip gray Ground Lead with Mini Alligator Clip black VP210 G See Note below Test Lead Set TL75 Accessory Set Red The set includes the following items not available sepa...

Page 23: ...probe sets Table 3 4 Optional Accessories Item Ordering Code Software Cable Carrying Case Kit Set contains the following parts Optically Isolated USB Cable Hard Carrying Case FlukeView ScopeMeter Software for Windows SCC190 OC4USB C190 SW90W Optically Isolated RS 232 Adapter Cable PM9080 Optically Isolated USB Cable OC4USB Hard Case C190 Soft Case C195 Current Shunt 4 20 mA CS20MA Print Adapter Ca...

Page 24: ...Fluke 19xB 19xC 2x5C Service Manual 3 10 ...

Page 25: ...s Test 4 13 4 6 6 Input A B Frequency Measurement Accuracy Test 4 14 4 6 7 Input A B Phase Measurements Test 4 15 4 6 8 Time Base Test 4 16 4 6 9 Input A Trigger Sensitivity Test 4 17 4 6 10 Input A AC Voltage Accuracy HF Bandwidth Test 4 19 4 6 11 Input B Trigger Sensitivity Test 4 20 4 6 12 Input B AC Voltage Accuracy HF Bandwidth Test 4 21 4 6 13 Video test using the Video Pattern Generator 4 2...

Page 26: ...Fluke 19xB 19xC 2x5C Service Manual 4 2 ...

Page 27: ...Verification The primary source instrument used in the verification procedures is the Fluke 5500A If a 5500A is not available you can substitute another calibrator as long as it meets the minimum test requirements Fluke 5500A Multi Product Calibrator including SC300 or SC600 Oscilloscope Calibration Option Stackable Test Leads 4x supplied with the 5500A 50Ω Coax Cables 2x Fluke PM9091 1 5m or PM90...

Page 28: ...n a menu Reset the test tool Open a menu for example press then press READING 1 The menu as showed in Figure 4 1 will be opened Active functions are marked by inactive functions by If more than one menu groups are available they will be separated by a vertical line The menu you opened indicates that READING 1 that is the upper left reading shows the result of a V ac dc measurement V ac dc on Input...

Page 29: ... actual settings 7 Press to change the PROBE A setting 8 Select Probe Type Voltage Attenuation 1 1 9 Press 10 Press to select READINGS ON 11 Press READING 1 and select on A V dc 12 Press READING 2 and select on B V dc 13 Press WAVEFORM OPTIONS and select Glitch Detect Off Average Off Waveform NORMAL 14 Press to select MANUAL ranging MANUAL in upper left of screen 15 Press 16 Press SAVE 17 Using an...

Page 30: ...CALIBRATE The test tool shows the display test pattern shown in Figure 4 2 at default contrast Observe the display closely and verify that the display shows no abnormalities Also verify that the contrast of the upper left and upper right square of the test pattern is equal 10 Press The test pattern is removed the test tool shows Contrast CL 0110 11 Press again to do the next step Contrast CL 0120 ...

Page 31: ...ab bmp Figure 4 3 Test Tool Input A B to 5500 Normal Output 2 Select the following test tool setup Recall the created SETUP 1 see section 4 4 3 press RECALL select SCREEN SETUP 1 press RECALL SETUP Press press INPUT A OPTIONS and select Polarity Normal Bandwidth 10 kHz HF reject Press press INPUT B OPTIONS and select Polarity Normal Bandwidth 10 kHz HF reject Press to clear the softkey menu and to...

Page 32: ...sions 11 Observe the 5500A output voltage and check to see if it is within the range shown under the appropriate column 12 Continue through the test points 13 When you are finished set the 5500A to 0 zero Volt and to Standby Table 4 1 Vertical Accuracy Verification Points Range Initial 5500A Setting V ac sine 50 Hz Allowable 5500A output for trace amplitude of 6 divisions 2 mV div 1 4 243 mV 4 081...

Page 33: ...erify the automatic dc voltage scope measurement 1 Connect the test tool to the 5500A as for the previous test see Figure 4 3 2 Select the following test tool setup Recall the created SETUP 1 see section 4 4 3 press RECALL select SCREEN SETUP 1 press RECALL SETUP Press then press INPUT A OPTIONS Select Polarity Normal Bandwidth 10 kHz HF Reject Press then press INPUT B OPTIONS Select Polarity Norm...

Page 34: ...50 mV div 150 mV 143 to 157 150 mV 143 to 157 100 mV div 300 mV 291 to 309 300 mV 291 to 309 200 mV div 600 mV 586 to 614 600 mV 586 to 614 500 mV div 1 50 V 1 43 to 1 57 1 50 V 1 43 to 1 57 1 V div 3 00 V 2 91 to 3 09 3 00 V 2 91 to 3 09 2 V div 6 00 V 5 86 to 6 14 6 00 V 5 86 to 6 14 5 V div 15 0 V 14 3 to 15 7 15 0 V 14 3 to 15 7 10 V div 30 0 V 29 1 to 30 9 30 0 V 29 1 to 30 9 20 V div 60 0 V ...

Page 35: ...PTIONS Select Polarity Normal Bandwidth 20 MHz Press then press INPUT B OPTIONS Select Polarity Normal Bandwidth 20 MHz Press Press READING 1 and select on A V ac Press READING 2 and select on B V ac Press to clear the softkey menu and to see the full screen 3 Using change the time base to select manual time base ranging Lock the time base on 20 μs div for the 20 kHz signals and on 10 ms div for t...

Page 36: ...o 923 mV 500 mV div Select 20 μs div 900 mV 20 kHz 863 mV to 937 mV 1 V div 2 V 20 kHz 1 80 V to 2 20 V 2 V div 4 V 20 kHz 3 75 V to 4 25 V 5 V div 9 V 20 kHz 8 63 V to 9 37 V 10 V div 20 V 20 kHz 18 0 V to 22 0 V 20 V div 40 V 20 kHz 37 5 V to 42 5 V 50 V div 90 V 20 kHz 86 3 V to 93 7 V 100 V div 200 V 20 kHz 180 V to 220 V 1 C versions only 4 6 4 Input A B AC Coupled Lower Frequency Test Procee...

Page 37: ...rification Points 5500A output V rms 5500A Frequency Reading 1 A and 1 B 900 mV 60 Hz 873 mV to 927 mV 900 mV 5 Hz 630 mV 4 6 5 Input A and B Peak Measurements Test WARNING Dangerous voltages will be present on the calibration source and connecting cables during the following steps Ensure that the calibrator is in standby mode before making any connection between the calibrator and the test tool P...

Page 38: ...n 8 Continue through the test points 9 When you are finished set the 5500A to 0 zero Volt and to Standby Table 4 5 Volts Peak Measurement Verification Points 5500A output Vrms sine 5500A Frequency Reading A B 212 13 mV 0 6 V pp 1 kHz 0 56 to 0 64 4 6 6 Input A B Frequency Measurement Accuracy Test Proceed as follows to test the frequency measurement accuracy 1 Connect the test tool to the 5500A as...

Page 39: ...e 300 mVpp 60 MHz 59 68 to 60 32 196B C 215C 20 ns div levsine 300 mVpp 100 MHz 99 3 to 100 7 199B C 225C 20 ns div levsine 300 mVpp 200 MHz 198 8 to 201 2 Note Duty Cycle and Pulse Width measurements are based on the same principles as Frequency measurements Therefore the Duty Cycle and Pulse Width measurement function will not be verified separately 4 6 7 Input A B Phase Measurements Test Procee...

Page 40: ...to 3 4 6 8 Time Base Test Proceed as follows to test the time base accuracy 1 Connect the test tool to the 5500A as shown in Figure 4 5 al55sca bmp Figure 4 5 5500A Scope Output to Test Tool Input A 2 Set the 5500A to source a 8 ms time marker MODE marker 3 Select the following test tool setup Reset the test tool Using and select manual vertical ranging and set the Input A sensitivity range to 5V ...

Page 41: ...k the time base on 10 ms div Using move the trace to adjust the trigger delay time to 800 0 μs A 800 0 μs Using set the time base on 1 μs div 7 Set the 5500A to source a 0 8 ms time marker MODE marker 8 Using move the trace to the right until the indicated trigger delay is 799 0 μs 9 Examine the rising edge of the time marker pulse at the vertical height of the trigger level indicator top Verify t...

Page 42: ... press then using enable the up down arrow keys for manual Trigger Level adjustment Adjust the trigger level and verify that the signal will be triggered now The trigger level is indicated by the trigger icon 7 Continue through the test points 8 When you are finished set the 5500A to Standby Table 4 8 Input A Trigger Sensitivity Test Points UUT UUT 5500A SC MODE levsin UUT Model Time base Initial ...

Page 43: ...right LCD edge Using and change the sensitivity range to select manual sensitivity ranging and lock the Input A sensitivity range on 500 mV div AUTO in upper right LCD edge disappears 3 Set the 5500A to source a sine wave to the first test point in Table 4 9 4 Observe the Input A reading and check to see if it is within the range shown under the appropriate column 5 Continue through the test point...

Page 44: ...range to select manual sensitivity ranging and lock the Input B sensitivity range on 2 V div 3 Using select the time base indicated under the first column of Table 4 10 4 Set the 5500A to source the leveled sine wave given in the first row of Table 4 10 5 Adjust the 5500A output voltage until the displayed trace has the amplitude indicated under the appropriate column of Table 4 10 6 Verify that t...

Page 45: ...ect the following test tool setup Recall the created SETUP 1 see section 4 4 3 press RECALL select SCREEN SETUP 1 press RECALL SETUP Press then press READING 2 and select on B V ac Press to select autoranging AUTO in upper right LCD edge Using and change the sensitivity range to select manual sensitivity ranging and lock the Input B sensitivity range on 500 mV div 3 Set the 5500A to source a sine ...

Page 46: ...ator 2 Select the following test tool setup Reset the test tool Press then press to open the Trigger Options menu Choose VIDEO on A then from the shown opened menu choose Polarity POSITIVE PAL or NTSC PALplus SECAM Press to select ALL LINES Press to enable the arrow keys for selecting the video line number Using select line number 622 for PAL PALplus or SECAM 525 for NTSC Using and set the Input A...

Page 47: ...SC line 525 5 Using select line number 310 for PAL or SECAM 262 for NTSC 6 Observe the trace and check to see if the test tool triggers on line number 310 for PAL or SECAM see Figure 4 11 line number 262 for NTSC see Figure 4 12 Figure 4 11 Trace for PAL SECAM line 310 Figure 4 12 Trace for NTSC line 262 7 Apply the inverted TV Signal Generator signal to the test tool Invert the signal by using a ...

Page 48: ...ine number 310 PAL or SECAM or 262 NTSC 10 Observe the trace and check to see if the test tool triggers on line number 310 PAL or SECAM see Figure 4 14 or line number 262 NTSC see Figure 4 15 Figure 4 14 Trace for PAL SECAM line 310 Negative Video Figure 4 15 Trace for NTSC line 262 Negative Video 4 6 14 Video test using SC600 Scope Calibration Option You can skip this test if you did test 4 6 13 ...

Page 49: ...or NTSC PALplus SECAM Press to select ALL LINES Press to enable the arrow keys for selecting the video line number Using select line number 622 for PAL PALplus or SECAM 525 for NTSC Using and set the Input A sensitivity to 2 V div the actual probe setting is 10 1 Using select the time base to 20 μs div 3 Set the calibrator to mode video with amplitude 100 Set format and marker line number to PAL 6...

Page 50: ...following test tool setup Press to open the Trigger Options menu Choose VIDEO on A then from the shown opened menu choose Polarity NEGATIVE PAL or NTSC PALplus SECAM 9 Set the calibrator video trigger output signal to 100 10 Using select line number 310 PAL PALplus or SECAM or 262 NTSC 11 Set the calibrator format and marker line number to PAL 310 odd for PAL and PALplus SECAM 310 odd for SECAM NT...

Page 51: ...pdate Single Shot Noise reject Filter On Using EDGE TRIG select Ext Using SLOPE select positive slope triggering trigger icon Using Ext LEVEL select 1 2 V 3 Set the 5500A to source 0 4V dc 4 Verify that no trace is shown on the test tool display and that the status line at the display top shows SINGLE MANUAL or SINGLE WAITING If the display shows the trace and status SINGLE HOLD then press to re a...

Page 52: ...meter mode Press to open the Measurement menu and select V dc Press to select MANUAL ranging use to select the ranges 3 Set the range to the first test point in Table 4 12 4 Set the 5500A to source the appropriate dc voltage 5 Observe the reading and check to see if it is within the range shown under the appropriate column 6 Continue through the test points 7 When you are finished set the 5500A to...

Page 53: ...ging use to select the ranges 3 Set the range to the first test point in Table 4 13 4 Set the 5500A to source the appropriate ac voltage 5 Observe the reading and check to see if it is within the range shown under the appropriate column 6 Continue through the test points 7 When you are finished set the 5500A to 0 zero Volt and to Standby Table 4 13 Meter Volts AC Measurement Verification Points Ra...

Page 54: ... Diode Test Function Test Proceed as follows to test the Diode Test function 1 Select the following test tool setup Press Press to open the Measurement menu and select Diode 2 Connect the test tool to the 5500A as for the previous test see Figure 4 18 3 Set the 5500A to 1 kΩ Use the 5500A COMP OFF mode 4 Observe the main reading and check to see if it is within 0 4 V and 0 6 V 5 Set the 5500A to 1...

Page 55: ...14 Use the 5500A COMP 2 wire mode for the verifications up to and including 50 kΩ For the higher values the 5500A will turn off the COMP 2 wire mode 4 Observe the reading and check to see if it is within the range shown under the appropriate column 5 Continue through the test points 6 When you are finished set the 5500A to Standby Table 4 14 Resistance Measurement Verification Points 5500A output ...

Page 56: ...e generator you can do a Probe Calibration as described in section 5 8 If no square wave appears on the screen either the probe is defective try another probe check the probe with an external voltage in a scope application or the internal square wave generator is defective This is the end of the Performance Verification Procedure ...

Page 57: ...g the Calibration 5 4 5 4 Contrast Calibration Adjustment 5 6 5 5 Warming Up Pre Calibration 5 7 5 6 Final Calibration 5 8 5 6 1 Input A LF HF Gain 5 8 5 6 2 Input B LF HF Gain 5 9 5 6 3 Input A B LF HF Gain 5 11 5 6 4 Input A B Position 5 12 5 6 5 Input A B Volt Gain 5 13 5 6 6 DMM Volt Gain 5 14 5 6 7 Input A B and DMM Zero 5 15 5 6 8 DMM Ohm Gain 5 16 5 6 9 Calculate Gain 5 17 5 7 Save Calibrat...

Page 58: ......

Page 59: ...d by one To display the calibration date and number 1 Press then press to see the Version Calibration data see Figure 5 1 2 Press to return to exit the Version Calibration screen wm verscal bmp Figure 5 1 Version Calibration Data Note The calibration date and calibration number will not be changed if only the Contrast Calibration Adjustment and or the Probe Calibration is done 5 1 3 General Instru...

Page 60: ...in this manual Skipping adjustment steps will make the calibration invalid The following partial calibrations are allowed Contrast calibration do the above mentioned steps 1 2 and 5 If during normal operation the display cannot be made dark or light enough or if the display after a test tool reset is too light or too dark you can do this calibration Probe calibration do the above mentioned step 6 ...

Page 61: ...ibration process is not started The calibration data of this step are valid This means that the last time this step was done the calibration was successful It does not necessarily mean that the unit meets the specifications related to this step IDLE invalid After re entering this step the calibration process is not started The calibration data are invalid This means that the last time this step wa...

Page 62: ...ich the test pattern is only just visible 4 Press to return to the softkey menu 5 Press to select default contrast calibration Contrast CL 0110 6 Press CALIBRATE The display shows the test pattern at default contrast 7 Using set the display to optimal becomes default contrast 8 Press to return to the softkey menu 9 Press to select maximum brightness calibration Contrast CL 0120 10 Press CALIBRATE ...

Page 63: ...bration step in progress and its status The first step is WarmingUp CL 0200 BUSY 00 29 59 The warming up period is counted down from 00 29 59 to 00 00 00 Then the remaining pre calibration steps are performed automatically The entire procedure takes about 60 minutes 3 Wait until the display shows End Precal READY The PreCal data have now been stored in FlashROM If you turn off the test tool now by...

Page 64: ...ation step N for example step CL 0620 then return to a previous step for example step CL 0616 and then calibrate this step the complete final calibration becomes invalid then you must repeat the calibration starting at 5 6 1 It is allowed to repeat a step that shows the status READY by pressing again Error messages Proceed as follows if an error message ERROR nnnn is displayed during calibration i...

Page 65: ...calibration points of Table 5 1 8 When you are finished set the 5500A to Standby 9 Continue at Section 5 6 2 Table 5 1 Input A LF HF Gain Calibration Points Cal step UUT input signal 5500A Setting CL 0654 none STANDBY CL 0400 0 5 Vpp square wave 1 kHz SCOPE edge 0 5 Vpp 1 kHz CL 0704 none STANDBY CL 0420 0 5 Vpp square wave 1 kHz SCOPE edge 0 5 Vpp 1 kHz CL 0480 0 5 Vpp sine wave 50 kHz SCOPE levs...

Page 66: ...libration point signal and start the calibration Continue through all calibration points of Table 5 2 8 When you are finished set the 5500A to Standby 9 Continue at Section 5 6 3 Table 5 2 Input B LF HF Gain Calibration Points Cal step UUT input signal 5500A Setting CL 0674 none STANDBY CL 0410 0 5 Vpp square wave 1 kHz SCOPE edge 0 5 Vpp 1 kHz CL 0724 none STANDBY CL 0421 0 5 Vpp square wave 1 kH...

Page 67: ...t calibration point in Table 5 3 Warning Dangerous voltages will be present on the calibration source and connection cables during the following steps Ensure that the calibrator is in standby mode before making any connection between the calibrator and the test tool 4 Set the 5500A to operate OPR 5 Press to start the calibration 6 Wait until the display shows calibration status READY 7 Press to se...

Page 68: ...0602 100 mV CL 0603 250 mV CL0662 2 V CL 0605 1 V CL 0606 2 5 V CL 0607 5 V CL0664 20 V CL 0608 10 V CL 0609 25 V CL 0610 50 V set 5500A to OPR 5 6 4 Input A B Position Proceed as follows to do the Input A B Position calibration 1 Press to select calibration adjustment step CL 0620 software versions V05 01 and V05 02 or CL 0619 software versions V05 03 and newer 2 Remove all Input A and Input B co...

Page 69: ...rst calibration step in Table 5 4 2 Connect the test tool to the 5500A as shown in Figure 5 6 al55ab bmp Figure 5 6 Test tool Input A B to 5500 Normal Output 3 Set the 5500A to supply a DC voltage NORMAL output to the first calibration point in Table 5 4 4 Set the 5500A to operate OPR 5 Press to start the calibration 6 Wait until the display shows calibration status READY 7 Press to select the nex...

Page 70: ...CL 0809 12 5 V CL 0810 25 V CL 0811 50 V set 5500A to OPR CL 0812 125 V CL 0813 250 V 5 6 6 DMM Volt Gain Warning Dangerous voltages will be present on the calibration source and connection cables during the following steps Ensure that the calibrator is in standby mode before making any connection between the calibrator and the test tool Proceed as follows to do the DMM Volt Gain calibration 1 Pre...

Page 71: ...libration step set the 5500A to the next calibration point and start the calibration Continue through all calibration points of Table 5 4 8 Set the 5500A to Standby and continue at Section 5 6 7 Table 5 5 DMM Gain Calibration Points Cal step UUT input value 5500A NORMAL CL 0840 500 mV CL 0849 2 5 V CL 0841 5 V CL 0842 50 V set 5500A to OPR CL 0843 500 V CL 0844 1000 V 5 6 7 Input A B and DMM Zero ...

Page 72: ...e sense leads must be connected directly to the test tool al55ex4w bmp Figure 5 8 Four wire Ohms calibration connections 3 Set the 5500A to the first test point in Table 5 6 Use the 5500A COMP 2 wire mode for the calibration adjustments up to and including 100 kΩ For the higher values the 5500A will turn off the COMP 2 wire mode 4 Set the 5500A to operate OPR 5 Press to start the calibration 6 Wai...

Page 73: ...IT The test tool will display Calibration data valid Save data and exit maintenance mode Note Calibration data valid indicates that the calibration adjustment procedure is performed correctly It does not necessarily mean that the test tool meets the characteristics listed in Chapter 2 3 Press YES to save and exit Note 1 After saving the calibration data the calibration number and date will be upda...

Page 74: ... with the Final Calibration Press YES When turning the test tool off and on again it will show the message The instrument needs calibration Please contact your service center The calibration date and number will not be updated You must continue with the Final Calibration To return to the Maintenance mode if you want to repeat the complete calibration Press NO Now press until the display shows Warm...

Page 75: ...ress and then to open the Probe on A menu 3 Select Probe Type Voltage Attenuation 10 1 Probe Cal 4 Press to start the probe calibration A square wave appears on the screen See Figure 5 10 the lower half of the screen is covered with operating instructions 5 Adjust the trimmer screw in the probe housing until a pure square wave is displayed 6 Press to continue with automatic dc calibration The test...

Page 76: ...Fluke 19xB 19xC 2x5C Service Manual 5 20 ...

Page 77: ... the Side Strap Changing the Side Strap Position 6 3 6 2 4 Opening the Test Tool Removing the Battery 6 3 6 2 5 Removing the Main PCA Unit and the Fan 6 5 6 2 6 Removing the Display Assembly 6 6 6 2 7 Replacing the LCD Window Decal 6 7 6 2 8 Removing the Keypad and Keypad Foil 6 7 6 2 9 Disassembling the Main PCA Unit 6 7 6 2 10 Reassembling the Main PCA Unit 6 8 6 2 11 Reassembling the Test Tool ...

Page 78: ......

Page 79: ...osition respective to the test tool bottom 2 The hinge consists of a circular raised rim in the tilt stand that is located over a circular lowering in the bottom case Pull sideward on the front edge of the tilt stand until the hinge releases Then rotate the stand to the rear to remove it You can remove the hangstrap now 6 2 3 Replacing the Side Strap Changing the Side Strap Position The side strap...

Page 80: ... side to remove it 6 Lift out the battery pack Figure 6 4 7 Unplug the cable leading to the Main PCA pull the cable gently backwards ST8563 WMF ST8568 WMF Figure 6 1 Loosen 2 Input Cover Screws Figure 6 2 Loosen 2 Bottom Holster Screws ST8569 WMF ST8570 WMF Figure 6 3 Opening the Test Tool Figure 6 4 Removing the Battery Pack ...

Page 81: ...Figure 6 5 Final Assembly Details 6 2 5 Removing the Main PCA Unit and the Fan Caution To avoid contaminating the flex cable contacts with oil from your fingers do not touch the contacts or wear gloves Contaminated contacts may not cause immediate instrument failure in controlled environments Failures typically show up when contaminated units are operated in humid areas ...

Page 82: ...klight voltage on the wire cable is 400V when the test tool is on 4 Remove the two screws item 14 that secure the Main PCA unit to the top case 5 Slide the Main PCA unit in the input cover direction to remove it 6 To remove the fan from the main PCA unit unplug the fan connector and unscrew the screws item 24 6 2 6 Removing the Display Assembly There are no serviceable parts in the display assembl...

Page 83: ... areas Referring to Figure 6 5 use the following procedure to remove the keypad and the keypad foil 1 Remove the display assembly see Section 6 2 6 2 Remove the keypad support plate item 6 3 Remove the keypad foil item 5 Notice the keypad foil positioning pins in the top case for reassembly 4 Remove the keypads item 3 and item 4 6 2 9 Disassembling the Main PCA Unit Caution To avoid contaminating ...

Page 84: ... C ASIC N1000 Input A or N1200 Input B for cooling Do not bend the springs Caution A good thermal coupling between the C ASIC s N1000 N1200 and the input boxes is achieved by self adhesive thermal conductive pads These pads can either be stuck on the spring in the box or on the C ASIC If stuck on the C ASIC you can re use the pad when replacing the C ASIC 2 Attach the isolation strip carefully Ins...

Page 85: ...to the Main PCA fan connector 7 Slide the Main PCA unit into the Top Case from the display end Make sure that the tabs on the Shielding Box go into the slots in the top of the Top Case Fasten with the 2 screws item 14 8 Verify that the backlight wires are twisted to minimize interference voltages Reattach the backlight cable Reattach the LCD flex cable secure that cable in the connector with the c...

Page 86: ...Fluke 19xB 19xC 2x5C Service Manual 6 10 ...

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