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Keysight 11683A, Operating And Service Manual

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Keysight 11683A Operating and Service Manual

Regulatory Information

The 11683A complies with the protection requirements of the European Communities 

Electromagnetic Compatibility (EMC) directives:
IEC61326-1:2012 / EN61326-1:2013
In order to preserve the EMC performance of the product, any cable which becomes worn or 

damaged must be replaced with the same type and specification.

Noise Declaration

LpA<70dB

am Arbeitsplatz (operator position) 
normaler Betrieb (normal position) 
nach DIN 45635 pt.l9 (per ISO 7779)

Summary of Contents for 11683A

Page 1: ...Keysight 11683A Range Calibrator Operating and Service Manual...

Page 2: ...ights customarily provided to the public to use modify reproduce release perform dis play or disclose commercial computer soft ware or commercial computer software documentation No additional governme...

Page 3: ...a service facility designated by Keysight Buyer shall prepay shipping charges to Keysight and Keysight shall pay shipping charges to return the product to Buyer However Buyer shall pay all shipping c...

Page 4: ...ntation indicate precautions which must be taken to maintain safe operation of the instrument Direct current DC Alternating current AC Protective earth ground terminal Frame or chassis ground terminal...

Page 5: ...e atmosphere or in the presence of flammable gases or fumes DO NOT use repaired fuses or short circuited fuseholders For continued protection against fire replace the line fuse s only with fuse s of t...

Page 6: ...lectromagnetic Compatibility EMC directives IEC61326 1 2012 EN61326 1 2013 In order to preserve the EMC performance of the product any cable which becomes worn or damaged must be replaced with the sam...

Page 7: ...ES NMB 001 indicates that this ISM device complies with the Canadian ICES 001 Cet appareil ISM est conforme a la norme NMB 001 du Canada This instrument complies with the WEEE Directive 2002 96 EC mar...

Page 8: ...as a Monitoring and Control Instrument product The affixed product label is as shown below Do not dispose in domestic household waste To return this unwanted instrument contact your nearest Keysight S...

Page 9: ...chnical Support 8 1 General Information General Information 16 Instruments Covered in the Manual 18 Obsolete models and their replacements 18 Description 19 2 Installation Initial Inspection 22 Power...

Page 10: ...T Balance Adjustment 39 39 Description 39 Equipment 39 Procedure 39 6 Service Service Information 42 Repair 43 Disassembly of A3 sampling gate assembly 43 A3A 1 assembly installation 43 FET assembly r...

Page 11: ...st setup 34 Figure 5 1 FET balance adjustment setup 40 Figure 6 1 FET assembly and spacer 44 Figure 6 2 Hybrid operational amplifier 46 Figure 6 3 11683A assembly and component locations 48 Figure 6 4...

Page 12: ...12 Keysight 11683A Operating and Service Manual THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK...

Page 13: ...Keysight 11683A Operating and Service Manual 13 List of Tables Table 1 1 Specifications 17 Table 1 2 Replacements for obsolete models 18 Table 1 3 Recommended test equipment 19...

Page 14: ...14 Keysight 11683A Operating and Service Manual THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK...

Page 15: ...Keysight 11683A Range Calibrator Operating and Service Manual 15 1 General Information General Information 16 Instruments Covered in the Manual 18 Description 19...

Page 16: ...rformance tests adjustments an service for the 11683A is listed in Table 1 3 Test equipment which meets or exceeds the critical specifications of Table 1 3 must be used for calibration if the 11683A i...

Page 17: ...0 30 100 and 300 J W 1 3 10 30 and 100mW Range to range calibration uncertainty 0 25 in all ranges Environmental Operating temperature 0 to 55 C Storage temperature 40 to 70 C Humidity Up to 95 Relati...

Page 18: ...hose documented in this manual For information concerning a serial number prefix not listed on the title page contact your nearest Keysight office Obsolete models and their replacements The following...

Page 19: ...ease of testing and adjusting the Power Meter auto zero feedback circuit Figure 1 2 Four wire cable Table 1 3 Recommended test equipment Instrument Critical specification Model Use Digital voltmeter...

Page 20: ...1 General Information 20 Keysight 11683A Operating and Service Manual THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK...

Page 21: ...Manual 21 2 Installation Initial Inspection 22 Power Requirements 22 Line Voltage Selection 22 Power Cable 22 Interconnections 22 Operating Environment 23 Bench Operation 23 Rack Mounting 23 Storage a...

Page 22: ...to 440 Hz at 125 mA For 230 and 240 Vac 48 to 66 Hz at 62 mA Power consumption is less than12 VA Line Voltage Selection Figure 2 1 provides instruction for line voltage and fuse selection The Line Vol...

Page 23: ...e on a bench Rack Mounting The instrument can be rack mounted by using an adapter frame The adapter frame is a rack frame that accepts several combinations of sub modular units For additional informat...

Page 24: ...2 Installation 24 Keysight 11683A Operating and Service Manual Figure 2 2 Power cable part numbers versus main plugs available...

Page 25: ...full serial number Other Packaging The following general instructions should be used for re packaging with commercially available materials 1 Wrap the instrument in heavy paper or plastic If shipping...

Page 26: ...2 Installation 26 Keysight 11683A Operating and Service Manual THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK...

Page 27: ...Keysight 11683A Range Calibrator Operating and Service Manual 27 3 Operating Instructions Operation of the Controls 28 Operating and Hookup Instructions 29...

Page 28: ...nector Connects the output to and control signals from compatible Power Meter via Power Sensor Cable 5 POLARITY switch An upscale reading is obtained on the Power Meter when the switch is set to NORMA...

Page 29: ...e power outlet and Power Module receptacles Press the LINE switch and release The switch should remain in the lamp within the plastic lens should be illuminated and the cursor on the curved portion of...

Page 30: ...3 Operating Instructions 30 Keysight 11683A Operating and Service Manual THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK...

Page 31: ...Keysight 11683A Range Calibrator Operating and Service Manual 31 4 Maintenance Instructions Maintenance Instructions 32 Range Switch Performance Test 34...

Page 32: ...the power supply voltage is in the specified range Mains supply voltage fluctuations should not exceed 10 of the nominal selected line voltage WARNING Appliance coupler mains input power cord is the p...

Page 33: ...Maintenance Instructions 4 Keysight 11683A Operating and Service Manual 33 Figure 4 1 Line switch lamp replacement...

Page 34: ...ements are more difficult to make resistance measurements are made at the lower RANGE switch settings To achieve the needed accuracy the four wire resistance measurement technique is used Figure 4 2 R...

Page 35: ...6 Measure the resistance at each RANGE setting from 300 to 3 W to 5 digit resolution and record the readings in the table below Verify that each reading falls within the limits shown 7 If any of the...

Page 36: ...4 Maintenance Instructions 36 Keysight 11683A Operating and Service Manual THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK...

Page 37: ...Keysight 11683A Range Calibrator Operating and Service Manual 37 5 Adjustments Adjustments 38 Power Supply Adjustment 38 FET Balance Adjustment 39...

Page 38: ...el Equipment The model 3455A is the recommended Digital Voltmeter used to set the power supply voltage A digital voltmeter that meets or exceeds the critical specifications of Table 1 3 may be substit...

Page 39: ...ding 2 Connect the equipment as shown in Figure 5 1 The oscilloscope probe will be coupled to TP4 if the 435A Power Meter is being used 3 Set the 11683A FUNCTION switch to STANDBY the Power Meter RANG...

Page 40: ...tments 40 Keysight 11683A Operating and Service Manual the appropriate test point is found the circuit is considered balanced and he capacitor may be soldered in place Figure 5 1 FET balance adjustmen...

Page 41: ...Keysight 11683A Range Calibrator Operating and Service Manual 41 6 Service Service Information 42 Repair 43 Principles of Operation 45 Troubleshooting 46...

Page 42: ...d component locations diagrams Figure 6 3 and Figure 6 4 Test equipment that meets or exceeds the critical specifications of Table 1 3 may be used in place of the recommended test instruments WARNING...

Page 43: ...he blade of a screwdriver into the seam on each side of the bulkhead feedthrough Gently twist until the covers snap apart Remove the covers and the magnetic shields 6 Remove the two 0 80 x 0 312 flat...

Page 44: ...y in place against the printed circuit boards 3 Quickly solder the FET leads to the circuit board 4 With hypodermic needle place RTV 1 into the hollow portion of the spacer For this purpose the needle...

Page 45: ...a voltage divider through which the feedback bias is coupled to A2U1 pin 2 the inverting input If the current flow through A2R2 exceeds 20 mA the current limiting transistor is turned on and the driv...

Page 46: ...e voltage difference is 10 mVdc verify that the regulated output has correctly followed the change in input levels The regulated output s relative change from normal should follow the non inverting in...

Page 47: ...of A3A1U1 The resistance should be less than 40 ohms 5 Set a power supply to 10 Vdc 6 Connect the positive side of the power source to A3J1 pin E signal ground Connect the negative power supply lead...

Page 48: ...6 Service 48 Keysight 11683A Operating and Service Manual Figure 6 3 11683A assembly and component locations...

Page 49: ...Service 6 Keysight 11683A Operating and Service Manual 49 Figure 6 4 A3 assembly component location Figure 6 5 11683A FG old rear panel Figure 6 6 11683A FG new rear panel...

Page 50: ...ce 50 Keysight 11683A Operating and Service Manual Figure 6 7 11683AZ H01 old rear panel Figure 6 8 11683AZ H01 new rear panel 11683 00012 Figure 6 9 Old power switch Figure 6 10 New power switch 1168...

Page 51: ...Service 6 Keysight 11683A Operating and Service Manual 51 Figure 6 11 11683A FG top view...

Page 52: ...l has an old power switch user must order the 11683AZ K02 upgrade kit which includes the new power switch and rear panel If the existing model already has the new power switch user needs to order 1168...

Page 53: ...t to change without notice Always refer to the English version at the Keysight website for the latest revision Keysight Technologies 1998 2018 Edition 5 June 25 2018 Printed in Malaysia 11683 90014 11...

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