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Tektronix SD-14, Service Manual

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Tektronix SD-14 Service Manual Download Page 60

Maintenance

Maintenance

3Ć4

Removing and Replacing the Sampling Head Internal

Circuitry

CAUTION

To avoid damage to the sampling head, set the instrument ON/

STANDBY switch to STANDBY and remove the sampling head from

the instrument before removing or replacing the internal circuitry.

             

      

1

2

3

4

Do Not Remove

Figure 3Ć1:ăRemoving and Replacing the Sampling Head Internal

Circuitry

Summary of Contents for SD-14

Page 1: ...ions are for use by qualified personnel only To avoid personal injury do not perform any servicing unless you are qualified to do so Refer to the Safety Summary prior to per forming service Please che...

Page 2: ...33 3 15 4 9 2 5 15 4 3425 4 3 5 452 4 4 4 4 3 6 3 8 5 15 43 5 429 5 452 3 4 3 73 42 8 6 24 2 42 8 4 4 9 42 8 0 42 8 2 6 4 2 3 3425 43 5 452 2 42 8 9 84 2 6 23 543 4 4 4 4 3 2 33 47 4 0 4 4 9 4 5 429...

Page 3: ...LITY OR FITNESS FOR A PARTICULAR PURPOSE TEKTRONIX RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY TEKTRONI...

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Page 5: ...r Shipment 1 7 Operating Environment 1 8 Checks and Adjustments Checks and Adjustments 2 1 Test Equipment 2 3 Using These Procedures 2 5 Procedure 1 Power On 2 8 Procedure 2 Rise Time 2 10 Procedure 3...

Page 6: ...ents ii Theory of Operation Theory of Operation 4 1 System Functional Overview 4 1 Offset Null and Offset Gain 4 2 Replaceable Parts Replaceable Parts 5 1 Parts Ordering Information 5 1 Using the Repl...

Page 7: ...SD 14 Service Manual iii List of Figures 4 3 4 4 3 4 4 3 4 4 3 2 4 4 3 4 4 3 4 4 4 3 1 0 4 4...

Page 8: ...iv...

Page 9: ...SD 14 Service Manual v List of Tables 4 6 5 2 0 1 1 6 6 4 6 5 6 4 6 5 6 4 6 5 6 4 6 5 6 4 6 5 3 6 4 6 5 0 3 6...

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Page 13: ...SD 14 Service Manual 1 1 General Information Introduction...

Page 14: ...ION WARNING Terms on Equipment CAUTION DANGER Symbols in Manuals Static Sensitive Devices Symbols on Equipment DANGER High Voltage Protective ground earth terminal ATTENTION Refer to manual Grounding...

Page 15: ...General Information SD 14 Service Manual 1 3 Do Not Operate in Explosive Atmospheres...

Page 16: ...formation 1 4 11801B CSA 803A Sampling Head Compartments Sampling Head Compartments Power Only Sampling Head Compartments Figure 1 1 Sampling Head Compartments in an 11801B and a CSA 803A Installing a...

Page 17: ...d Time Base Controller Firmware Versions Compatible with the SD 14 Mainframe Instrument Firmware Version for SD 14 Operation CAUTION To prevent damage to the sampling head or instrument never install...

Page 18: ...General Information General Information 1 6 Sampling Head Lock Down Screw Figure 1 2 Installing a Sampling Head in an Instrument...

Page 19: ...General Information SD 14 Service Manual 1 7 H H H H Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Packing for Shipment...

Page 20: ...General Information General Information 1 8 Operating Temperature _ _ _ _ _ Operating Environment...

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Page 23: ...hat have a yes in the Functional Test column Refer to the for more information about specifications and sampling head operation Refer to Table 2 2 for informa tion concerning test equipment used in th...

Page 24: ...Checks and Adjustments Checks and Adjustments 2 2 Table 2 1 Measurement Limits and Specifications Cont Procedure Number and Description Functional Test Specification Measurement Limit 0 0 v 0...

Page 25: ...nerator with a TM 500 Series Power Module Time Mark Generator 1 ns through 5 s markers in a 1 2 5 sequence at least 5 parts in 10 accuracy Tektronix TG 501A Time Mark Generator with a TM 500 Se ries P...

Page 26: ...est Equipment Minimum Specification 55 6 503 55 6 5 0 W 50 5 530 9 35 3 5 0 530 9 35 W 3 5 0 0 5034 1 W 0 503 530 9 35 W 3 5 0 0 5034 1 W 0 5034 530 9 35 035 3 6 5 3 5 0 0 5034 0 1 5 530 9 35 0 503 50...

Page 27: ...nventions in this Manual H 0 0 H Bold 0 0 H 0 0 1 0 Check Adjust 2 Examine 0 Initialized and Stored Settings Initialize 2 Initialize 2 1 0 2 Menu Selections and Measurement Techniques 0 User Manual 0...

Page 28: ...Checks and Adjustments Checks and Adjustments 2 6 Setup Illustrations...

Page 29: ...l Clock Output Trigger Input Left Sampling Head Compartment Calibrator Output Internal Clock Output Trigger Input Antistatic Connection Left Sampling Head Compartment Left Sampling Head Compartment Le...

Page 30: ...Checks and Adjustments Checks and Adjustments 2 8 0 _ _ Setup to Power On Sampling Head 11801B CSA 803A Sampling Head Procedure to Power On Step 1 0 1 0 Step 2 2 Step 3 0 Procedure 1 Power On...

Page 31: ...Checks and Adjustments SD 14 Service Manual 2 9 Step 4 Step 5 0 0 H H H H H...

Page 32: ...ation Step Generator Calibration Fixture 50 W Termination Internal Clock Output SMA F F Adapter Power Supply Remote Head Control Unit CSA 803A Calibration Step Generator Calibration Step Generator Cal...

Page 33: ...5 27 Acquire Desc 1 6 8 240 0 24 0 17 Step 6 6 Average N 62 On 1 6 1 627 Set Avg N Step 7 6 Average N 62 9 6 6 623 12 Step 8 27 6 24 216 21 1 6 1 5 6 Main Size 1 6 12 0 17 Step 9 1 6 Main Size 323 73...

Page 34: ...Checks and Adjustments Checks and Adjustments 2 12 Step 18 Main Pos Step 19 Main Size Step 20 Main Pos Step 21 Rise Mean Rise Step 22 v...

Page 35: ...ustments SD 14 Service Manual 2 13 Measurement Limits Table 2 3 Aberration Measurement Limits Time Difference from the Rising Edge of Waveform Aberration Measurement Limits v v v v v v w v v Procedure...

Page 36: ...ator Calibration Step Generator Calibration Fixture 50 W Termination Internal Clock Output SMA F F Adapter Power Supply Remote Head Control Unit CSA 803A Calibration Step Generator Calibration Step Ge...

Page 37: ...e Main Size pop up menu set the Main Size to 400 ns div Step 8 Set the Main Pos so that the rising edge of the step is at the left most edge of the screen Step 9 Touch the vertical icon and then set t...

Page 38: ...s only 1 under Mainframe 31 Enter Desc Step 19 Acquire Desc 1 Set Avg N Avg N 64 Step 20 Vert Offset M1 Step 21 Vert Size M1 Step 22 0 Main Size Do not adjust the horizontal position Step 23 Examine 1...

Page 39: ...Checks and Adjustments SD 14 Service Manual 2 17 Measurement Limits H H H Specifications Setup to Examine Offset CSA 803A 11801B W W Procedure 4 Offset Sampling Repetition Rate...

Page 40: ...32 Step 5 3 44 5 65510 0 516 Enhanced Accuracy 0 3 4 13 23 44 5 65510 Step 6 16 Offset 0 5 0 0 63 9 06 Step 7 16 Automatic Calibrate 0 5 Offset 212 62 06 0 1 18 5 04536 5 104 10 5 04536 05 42 9 Check...

Page 41: ...ments SD 14 Service Manual 2 19 Step 13 Mean Data Interval whole zone Mean Step 14 Mean Measurement Limits Table 2 4 Measurement Limits for Offset Vertical Offset Setting V Vertical Size Setting Measu...

Page 42: ...ts 2 20 Setup to Check Offset Change with Repetition Rate 11801B W Time Mark Generator CSA 803A W Time Mark Generator Procedure to Check Offset Change with Repetition Rate Step 1 2 0 1 3 0 0 0 Enhance...

Page 43: ...sc Step 9 3 Average N 3 On 3 3 4 Set Avg N Step 10 3 Average N 3 8 6 3 3 3 0 Step 11 3 4 3 3 Acquire Desc 2 3 1 3 1 4 2 62 3 3 3 5 1 2 5 0 3 Step 12 1 22 3 433 Step 13 4 Measurements 3 Mean 3 Measurem...

Page 44: ...Gain of Mainframe CSA 803A 11801B 10X Attenuator Calibration Head Voltage Source Calibration Fixture 50 W Termination SMA F F Adapter SMA T Connector 10X Attenuator Calibration Head Voltage Source Ca...

Page 45: ...et 84 0 V 97 3 8 034 46 545 95 0 5 2 39 Step 4 6 77 8 98843 8 3 7 1 8 Measurements 642 8 2 3 2 39 Step 5 642 8 796 2 387 545 95 2 39 7 1 8 Mean 46 64 3 1 43 5 5 6 462 8 4114 3 78 57 Step 6 8 8 418 496...

Page 46: ...4 6 Step 11 CH 1 6 3 Step 12 1 6 1 Step 13 0 1 Vin V Step 14 0 Vert Size M1 Step 15 Vert Size M1 6 0 4 1 6 Step 16 0 3 Mean Mainframe with SD 14 y 6 2 1 6 3 0 Mainframe with SD 14 2 Calculate the Gain...

Page 47: ...Checks and Adjustments SD 14 Service Manual 2 25 x Mainframe with SD 14 y Step 17 x2 xy x y x2 xy Step 18 x Mainframe with SD 14 y x2 xy Step 19 Step 20 x Mainframe with SD 14 y...

Page 48: ...Checks and Adjustments Checks and Adjustments 2 26 Step 21 x Step 22 Mainframe with SD 14 y Mainframe with SD 14 y Dev v...

Page 49: ...tion Table for This Procedure Table 2 5 Data for Calculation of Gain and Linearity Mainframe Alone Mainframe with SD 14 Vin V Vert Size mV div x 10 x Vert Size mV div y x2 xy Yideal a bx Dev y yideal...

Page 50: ...mine Displayed Noise CSA 803A 11801B W W Procedure to Examine Noise Step 1 3 8 3 2314 3 2 33 2 3 3 5 2 39 3 2 3 1 1 23 0 2314 3 1 433 01 22 Source Internal Clock 433 01 22 433 1 2 01 22 Enhanced Accur...

Page 51: ...e Manual 2 29 Step 5 Vert Size M1 Step 6 Def Tra Step 7 Vertical Description Mainframe 1 Mainframe Avg Mainframe 1 Mainframe Enter Desc Step 8 Measurements Step 9 RMS Measurements RMS Step 10 Data Int...

Page 52: ...cedure to Check Time Delta Step 1 0 5 9 5 04536 05 4 55 0 4 5 0 5 1 18 0 4 55 0 4 0 5 13 3 45 2 0 0 0 04536 05 0 3 65510 3 4 23 44 65510 23 44 Calibrate All 212 62 06 Recall Defaults 65510 23 44 Sourc...

Page 53: ...0 0 1 Vertical Size 1 Step 11 0 Store Trace 0 Step 12 Next Storage Store Trace 50 0 0 0 Trace 1 50 0 Step 13 Step 14 0 3 Step 15 Step 16 0 4 Main Size 1 Step 17 0 1 Vertical Size 1 Step 18 0 0 Acquire...

Page 54: ...erences 2 Save Current Meas Values as References Step 33 Compare References 2 Compare 0 On Exit 2 PropDelay 0 0 Step 34 1 Sampling Head Fnc s Channel Delta Delay Sampling Head Fnc s 2 Channel Delta De...

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Page 57: ...SD 14 Service Manual 3 1 Maintenance Periodic Electrical Checks Static Sensitive Device Classification CAUTION Step 1 Step 2 Preventive Maintenance...

Page 58: ...0 0 0 2 3 5 1 2 0 0 0 Table 3 1 Relative Susceptibility to Electrostatic Discharge ESD Semiconductor Classes Relative Susceptibility Levels1 1 0 0 1 0 1 0 3 0 10 0 0 2 00 4 00 4 5 1 4 0 0 1 0 35 3 00...

Page 59: ...Maintenance SD 14 Service Manual 3 3 Exchanging Sampling Heads...

Page 60: ...CAUTION To avoid damage to the sampling head set the instrument ON STANDBY switch to STANDBY and remove the sampling head from the instrument before removing or replacing the internal circuitry 1 2 3...

Page 61: ...Maintenance SD 14 Service Manual 3 5 Step 1 0 3 3 1 5 Step 2 0 4 0 1 1 4 0 1 0 1 Step 3 3 1 3 Step 4 0 0 Step 5 3 0 1 0 1 5 1 3 3 0 5 1 Step 6 3 2 Step 7 3 1 0 0...

Page 62: ...352 85 H 25 1 27 5 203 7 7 7 6 1 1 6 5 3257 21 85 25 H 6 5 52 85 72 1 7 6 03 1 17 7 21 180 5 Step 1 7 7 167580 17 6 72 167 7 6 257 5 8 7 803 5 5266 7 7 2 3 16 21 7 0 6 21752 5 2 5 6 257 5 8 7 803 56 5...

Page 63: ...2 0 4 0 0 Step 9 0 04 a 0 0 01 0 4 Step 10 4 id 0 0 01 0 4 0 4 0 3 Make sure 11800 RS232 port is set up as follows Baud Rate 4800 Parity none Stop bits 1 Enter mainframe head number 1 4 NOTE When ente...

Page 64: ...ax NOTE The X s between the quotes represent the current ID number Eight is the maximum number of digits allowed and one is the minimum Any character is allowed except a space character Step 12 Change...

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Page 67: ...SD 14 Service Manual 4 1 Theory of Operation Figure 4 1 SD 14 Block Diagram System Functional Overview...

Page 68: ...Theory of Operation Theory of Operation 4 2 Offset Null and Offset Gain...

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Page 71: ...SD 14 Service Manual 5 1 Replaceable Parts 1 0 0 0 0 0 H H 0 H H 0 0 0 0 0 Module Replacement 1 0 0 H Module Exchange 0 0 0 0 0 1 H Module Repair 0 0 0 H New Modules 0 0 Parts Ordering Information...

Page 72: ...Replaceable Parts Replaceable Parts 5 2 Item Names Abbreviations Using the Replaceable Parts List...

Page 73: ...Replaceable Parts SD 14 Service Manual 5 3 CROSS INDEX MFR CODE NUMBER TO MANUFACTURER Mfr Code Manufacturer Address City State Zip Code...

Page 74: ...ble Parts Replaceable Parts 5 4 Fig Index No Tektronix Part No Serial No Effective Dscont Qty Name Description Mfr Code Mfr Part No ACCESSORIES 4 5 6 1 2 3 Figure 5 1 Exploded View of the SD 14 Sampli...

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