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S p e c t r u m A n a l y z e r

H M 5 0 1 4 - 2

Service Manual

Release: April, 2008

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Summary of Contents for HM5014-2

Page 1: ...S p e c t r u m A n a l y z e r H M 5 0 1 4 2 Service Manual Release April 2008...

Page 2: ...ial and light industry are applied Regarding the immunity susceptibility the limits for industrial environment have been used The measuring and data lines of the instrument have much in uence on emiss...

Page 3: ...of IF Unit 22 5 5 Replacement of CPU Board 22 5 6 Replacement of PS Board 22 5 7 Replacement of Tracking generator 23 5 8 Replacement of ATT module TG path 23 5 9 Replacement of RF Box 23 5 10 Replace...

Page 4: ...1 MHz Pre compliance EMI measurements Software for documentation included Software for extended measurement functions for EMI measurements included Tracking Generator with output amplitude from 50dBm...

Page 5: ...to RBW 1 MHz and Zero Span 1 dB Digitization Error 1 digit 0 4 dB at 10 dB div scaling Average Zero Span Inputs Outputs Measuring Input N socket Input Impedance 50 VSWR Attn 10 dB typ 1 5 1 Tracking G...

Page 6: ...2 V 2000 V 12 V 141 V TG LO 1369 3 MHz Gain Control PLL TG LO Ampl REF PLL 1st LO PLL 2nd LO TG Mixer CRT RAT Board SiC1 CAVITY Filter IF Amp Oscillator 1369 3 2419 3 MHz 1 ATD Board Attenuator Driver...

Page 7: ...he con nector for RiC 4 They are not shown in the block diagram IF Unit The IF Unit consists of the RFC board the IFA board and the two mounting aluminium sheets as well as the interconnections betwee...

Page 8: ...enerator controls the sweep time accor ding to the setting by the user for maintaining best signal and amplitude representation The main CPU 35 on the CPU Board is quite straightforward using an EPROM...

Page 9: ...P VIEW CPU board KEY Module IF unit IF lter RFC board Interface CRT Module PS Module with cover BOTTOM VIEW KEY Module XYZ Module PS Module with cover RF Box CRT Module SIDE VIEW IF unit CPU Board KEY...

Page 10: ...male Length 1 1 5 m Huber Suhner No 23023806 Signal interconnection M6 SMB BNC Coaxial Adap tor 50 Ohm SMB male BNC female Schuricht 33 SMB BNC 50 2 Huber Suhner Signal interconnection M7 RS 232 cable...

Page 11: ...ax 3 mm thick Removing mounting SMA nuts semi rigid cables A4 Screwdriver for crosshead screw Removing mounting screws A5 Screwdriver for adjustment purposes Adjustment of various potentiometers A6 Pa...

Page 12: ...nsure proper conditions for the performance check and prevent settings errors the instrument must be prepared as follows Allow a minimum warm up time of 30 minutes at ambient temperature unit must be...

Page 13: ...Then connect it via an adaptor M6 and a coaxial cable M8 to the A input of the frequency counter as shown in measurement setup 2 using option B connection of the HM5014 2 Figure 2 4 Illustration of C...

Page 14: ...ies at these 2 points and subtract them The dif ference obtained may be in the range of 700 kHz and 1200 kHz The HM5014 2 has the RBW values de ned as the 6 dB points to follow standard EMC bandwidth...

Page 15: ...per mitted when measuring along the line using the marker For higher precision of the result the generator should be measured rst with a power meter connected to the end of the connection to the spec...

Page 16: ...nector for supply measurement Pin1 144V Pin6 32V Pin7 12V Pin8 12V In earlier units this connector may have a ribbon cable at tached 5 V Figure 3 2 CPU board showing the location for 5V measurement Th...

Page 17: ...m from the right vertical side line which is 6 cm large and has highlighted points at each end This display must be without any extra points showing at any place in the CRT area Adjust the intensity s...

Page 18: ...XO frequency Set the HM5014 2 to the following RBW 1 MHz Center 500 MHz Span Zero Span Ref Level 20dBm ATT 10 dB Max Hold Average Video lter Marker and Tracking Ge nerator not activated Connect a 500...

Page 19: ...old Average Video lter and Tracking Generator not activated Connect coaxial cable M8 using M11 to the test signal output and to the RF input of the HM5014 2 The marker reading may be in the range of 2...

Page 20: ...voltages on the cable Replace CPU Board and repeat test 1 2 1 6 Pull IF Unit conn Does CRT light up Replace IF unit 2 1 Check amplitude at 1 must be 31 dBm Attenuator malfunction replace ATT 1 thru 3...

Page 21: ...Position 5 Module Replacement 5 1 2 Remove the Rear Cover Unscrew the two hexagon cap nuts as shown in gure 5 3 Use tool A7 see paragraph 1 3 table 1 2 Remove the rear cover by pushing it backwards R...

Page 22: ...peration ref to paragraph 5 18 5 5 Replacement of CPU Board The replacement of the CPU board has several steps See Fig 5 6 for orientation First M1 M7 then after removing the cables loosen M8 M11 M9 M...

Page 23: ...ng 2 connections RiC 9 and CiC 3 Lift the TG module out of the HM5014 2 connector move Figure 5 9 Removal of TG likewise RF Box 5 7 2 Installing of the Tracking generator Put the TG module in the bay...

Page 24: ...riortoreplacingtheKEYboard theIFunitmustberemoved see paragraph 5 4 as well as the front cover see paragraph 5 12 5 11 1 Removal of KEY board Loosenthe4countersunkscrewsthatholdtheKEYmodulefrom the fr...

Page 25: ...5 12 2 5 16 Replacement of the Test Signal Connector 5 16 1 Removal of the the Test Signal Connector Remove the front cover see paragraph 5 12 1 Unsolder the coaxial cable at the rear of the BNC conn...

Page 26: ...p ping The two protective foam plastic parts prevent the control elements and connectors from being damaged 6 2 Ordering Spare Parts The stock numbers are necessary for ordering replacement parts and...

Page 27: ...27 Subject to change without notice...

Page 28: ...00 100 Reg Nr 071040 QM sales hameg com Oscilloscopes Spectrum Analyzer Power Supplies Modular System Series 8000 Programmable Instruments Series 8100 w w w h a m e g c o m 43 2030 2010 Subject to cha...

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