HP 5382a User's Manual
Contents
1. 3 8 The standard counter will measure the ratio between the frequencies of two signals if one of the signals is applied to the rear panel OSCILLATOR EXT IN connector and the other signal is applied to the front panel INPUT connector The Option 001 counter does not have an external oscillator input connector Be sure to refer to Table 1 1 for signal level and frequency limits The displayed value is in units which represent the ratio of one frequency to the other as shown by the following formula l frequency at front panel INPUT Display Value freq at rear panel OSCILLATOR EXT IN X 10 if GATE TIME is ls where X 104if GATE TIME is ls 107 if GATE TIME is 10s 3 9 Note that is the above formula the term X changes by a factor of 1000 108 for each change in GATE TIME setting GATE TIME itself changes X by a factor of 10 and the decimal point in the display shifts two places 102 for a total of 10 Note also that actual measurement time increases as the frequency applied to the OSCILLATOR EXT IN connector decreases If the fre quency applied to the OSCILLATOR EXT IN conne tor is 1 MHz for example and GATE TIME is set to 1s actual measurement time will be 10 seconds 3 1 ie Model 5382A Operation 3 10 OPERATOR CHECKS 3 11 These quick preliminary checks should be performed by the operator when an instrument failure is suspected l Problem I No display digits are illuminated CHECK a Equ2. 10 or X100 then reduce the attenuation if necessary until a stable display is observed CAUTION BE SURE THAT THE MAXIMUM ALLOWABLE INPUT VOLTAGES AS GIVEN IN TABLE 1 1 SPECIFI CATIONS ARE NOT EXCEEDED DAMAGE TO THE COUNTER MAY OTHERWISE RESULT INPUT connector Connect the signal to be measured to the BNC type INPUT jack Input impedance is 1 0 megohm Figure 3 1 Front Panel Operating Controls Connectors and Indicators 3 3 Model 5382A Operation OV WJ p 4 POV MI DA SI 000 Ul RI VOLTAGE SELECTOR Soy W CM CAUTION CHECK PROPER VOLTAGE SELECTION SERIAL NO O REWETI PACKARD PACKARD MANE I Sha A O 0 E MN gt ABAAA SOVA MAX Sem EXT IN OSCILLATOR A A 500 MAT 10071120V 250 mAT 220 2407 pe SE cc 2 STANDARD INSTRUMENT REAR VIEW 1 Power connector Connect the source of ac power to the rear panel power connector 2 Fuse A Listed 500 milliampere slow blow fuse is required for 100 volt or 120 volt opera tion a Listed 250 milliampere slow blow fuse is required for 220 volt or 240 volt operation 3 OSCILLATOR connector Serves as a monitoring point for the internal time base oscilla tor or provides an input path for an external time base oscillator depending on the EXT INT switch setting NOTE a The output is designed to drive a 500 load b The internal time base oscillator output may be con n
3. 60 0200 FLAT HEAD SCREW 40 e 1 02 cM SOL per 71CM E 10851 0000 RACK MOUNTING BRACKET SINGLE D 10852 0000 RAGK MOUNTING BRACKET DOUBLE FLAT HE HEX FEMALE 0380 0988 STAND OFF Figure 2 3 Rack Mounting Kit Model 5382A Operation SECTION III OPERATION 3 1 INTRODUCTION 3 2 This section contains descriptions of the controls connectors and indicators measurement techniques and operator checks 3 3 CONTROLS CONNECTORS AND INDICATORS 3 4 Figures 3 1 and 3 2 describe the operation of the 5382A controls and the function of the various connectors and indicators The following paragraphs also provide operating guidelines and brief operator maintenance procedures for the frequency counter 3 5 MEASUREMENT TECHNIQUES 3 6 Noise riding on the input signal can cause erroneous or unstable frequency measurements Using the internal attenuator or external attenuators minimizes this problem Proper selection of the input impedance also allows for stable and accurate frequency measurements When there is a difference between the signal source impedance and the counter input impedance ringing may appear on the signal This ringing could interfere with and degrade the capability of the counter Knowledge of the signal source circuit characteristics and selection of compatible input impedances and attenuation permits proper measurements ad 3 7 Ratio Measurements Standard Counter Only
4. FREQUENCY COUNTER 5382A OPERATING AND SERVICE MANUAL SERIAL PREFIX 1804A This manual applies directly to HP Model 5382A Fre quency Counters having the above serial number prefix NEWER INSTRUMENTS This manual with enclosed Manual Changes sheet applies to HP Model 5382A Frequency Counters having serial number prefixes as listed on the Manual Changes sheet OLDER INSTRUMENTS For serial prefixes below the serial prefix shown above refer to Section VII for manual backdating instructions Copyright HEWLETT PACKARD COMPANY 1974 5301 STEVENS CREEK BLVD SANTA CLARA CALIF 95050 MANUAL PART NUMBER 05382 90008 MICROFICHE PART NUMBER 05382 90009 Printed APRIL 1978 O Peron CERTIFICATION The Hewlett Packard Company certifies that this instrument was thoroughly tested and inspected and found to meet its published specifications when it was shipped from the factory The Hewlett Packard Company further certifies that its calibration measure ments are traceable to the U S National Bureau of Standards to the extent allowed by the Bureau s calibration facility WARRANTY AND ASSISTANCE This Hewlett Packard product is warranted against defects in materials and workmanship This warranty applies for one year from the date of delivery or in the case of certain major com ponents listed in the manual for the specified period We will repair or replace products which prove to be defecti
5. e check procedures are located in SectionIV and Sales and Service Offices are listed at the back of this manual Retain the shipping carton and the padding material for the carrier s inspection The Sales and Service Office will arrange for the repair or replacement of the instrument without waiting for the claim against the carrier to be settled l 2 5 STORAGE AND SHIPMENT 2 6 PACKAGING To protect valuable electronic equipment during storage or shipment always use the best packaging methods available Your Hewlett Packard Sales and Service Office can provide packaging material such as that used for original factory packaging Contract packaging companies in many cities can provide dependable custom packaging on short notice 9 7 ENVIRONMENT Conditions during storage and shipment should normally be limited as follows l l a Maximum altitude 25 000 ft b Minimum temperature 40 F 40 C c Maximum temperature 131 F 55 C 2 8 LINE VOLTAGE SELECTION 2 9 The counter is supplied from the factory with the LINE VOLTAGE SELECTOR switches set for 120 volt 60 Hz operation If any other supply voltage is to be used change the rear panel switch settings as follows a Using a small screwdriver a pencil or other suitable tool set the LINE VOLTAGE SELECTOR switches on the counter s rear 2 POLE 3 WIRE panel to the positions shown next to the desired voltage marking on the rear panel b Ensure that the correct fuse i
6. ected to the front panel input jack with INPUT switch in the XI position to provide a conve nient counter self check operation 4 EXT INT switch Selects the function of the OSCILLATOR connector Switch Position OSCILLATOR Connector Function EXT Provides a nominal 509 input impedance path for an external 10 MHz time base or ratio input INT Monitors the internal timebase oscillator An optimum signal is obtained when the output drives a 500 load gt 200 mV peak to peak 5 OSCILLATOR ADJ control The ADJ control is used to set the frequency of the internal time base oscillator Refer to the Adjustments paragraphs in Section IV for information 6 LINE VOLTAGE SELECTOR switches Set the switches to correspond with the voltage of the ac power source Refer to Paragraph 2 8 for instructions Figure 3 2 Rear Pane Operating Controls and Connectors Model 5382A Operation 100V NEI Mm A ROV RI DB 220V KA BEI PUNE VOLTAGE SELEC TOR s5 940V TW Uae I CAUTION CHECK PROPER ee E VOLTAGE SELECTION 48 440 SOVAMAX SERIAL NO dura x pra MONITOR OUTPUT TCXO di doi OPTION 001 3001 mA 1007120 V POOLS OPTION 601 REAR VIEW 7 MONITOR OUTPUT connector Serves as an internal time base oscillator monitor out put connector ONLY see NOTE under item 3 for Option 001 8 TCXO ADI control Same as step 5 in adjacent page Refer to paragraph 4 40 in Section Ivi for information on opti
7. igh panels for installation of one or two 5380 family counters Kit is also useful with HP 3311A Function Generator HP 3470 DVM etc HP 10851A Kit for single counter mounting HP 10852A Kit for dual counter mounting Maximum input Voitage DC to 40 Hz 40 Hz to 100 kHz 100 kHz to MHz 200 Vmax de peak ac 200 Vde 250 V rms ac 200 Vde 2 5 x 107 V rms ac freq Hz gt f MHz 200 Vde 5 V rms fac lt X10 X100 DE to 40 Hz 200 V de peak ac 40 Hz to 1 MHz 200 Vde 250 V rms ac 1 MHz to 50 MHz 200 Vde 2 5 x 104 V rms ac freq Hz gt 50 MHz 200 Vde V rms ac OPTION 001 Temperature Compensated Crystal Oscillator Frequency 10 MHz Aging lt 0 1 ppm month Temperature 1 ppm 0 C to 40 C Line Voltage 1 part in 107 for 10 change External input replaced with Oscillator Monitor Output on Option 001 Model 5382A Installation SECTION I INSTALLATION 2 1 INTRODUCTION 2 2 This section of the manual provides information about unpacking inspecting storing and shipping the frequency counter 2 3 UNPACKING AND INSPECTION 2 4 If the shipping carton is damaged ask that the carrier s agent be present when the instru ment is unpacked Inspect the instrument for damage such as scratches dents broken switches etc If the instrument is damaged or fails to meet performance tests notify the carrier and the nearest Hewlett Packard Sales and Service Office immediately Performanc
8. ipment cable plugged in b Proper line voltage selected on rear panel Refer to Paragraph 2 8 c Rear panel fuse blown Refer to Paragraph 2 9 Problem II All display digits are not illuminated a This is normal The counter provides a leading zero blanking feature which blanks non significant display digits The following displays are correct when a signal is not applied to the counter input GATE TIME Switch Position DISPLAY 1 S MHz 1 S kHz 10 S Hz 3 12 This additional quick and convenient loop around check is provided to verify normal operation of the instrument a Set the rear panel INT EXT switch exists on the standard counter only to the INT position b Set the front panel ATTENUATOR switch to the X1 position c Connect a coaxial cable between the rear panel OSCILLATOR or MONITOR jack and the front panel INPUT jack d 10 MHz display 1 least significant digit indicates that the counter is operating nor gt mally The following displays will occur for each position of the GATE TIME switch GATE TIME Switch Position DISPLAY A S MHz 1 S kHz 10 S Hz Overflow indicator on 3 2 Model 5382A Operation GATE TIME ATTENUATOR ts xt KAD i x 166 5382 A 4 1 Display Eight digits of LED light emitting diode display are provided on the front panel A decimal point illuminates in the proper position according to the setting of the GATE TIME switch a
9. nd an over range indicator in the upper left corner of the display illuminates when the counter overflows 9 LINE switch The ac power LINE switch is a push on push off type in the on position the pushbutton is set further into the front panel l 3 GATE TIME switch Gate time measurement time can be set at 0 1 second 1 second or 10 seconds with the GATE TIME switch These positions give resolutions of 10 Hz 1 Hz and 0 1 Hz respectively If the GATE TIME switch is set to 1s for example it will take one second to make a measurement and the measured value will be displayed in 1 Hz increments Manual resetting of the counter circuits occurs when ever the GATE TIME switch position is changed Set the GATE TIME switch to prov vide the best compromise between measurement speed and resolution of the dis played value 4 ATTENUATOR switch The three position attenuator switch provides for attenuation of input signals by factors of 10 and 100 The input signal is not attenuated when the switch is set to the X1 position The attenuator is used to extend the range of input signal levels that can be measured by the counter and to optimize noise rejection Maximum sensitivity of the counter ranges from 25 millivolts rms with the attenuator set to X1 to 2 5 volts rms with the attenuator set to X100 If the amplitude of a measured signal is unknown or if signal noise causes the display to be unstable set the ATTENUATOR to X
10. nnector is used to monitor the 10 MHz time base oscillator Refer to Table 1 1 for all counter specifications 1 5 ACCESSORIES AND OPTIONS 1 6 Two accessories are available for mounting the 5382A counter onto the user s rack The 10851A kit permits the mounting of a single counter while the 10852A kit is used for mounting two counters in a side by side configuration Refer to Section II for detailed rack mounting kit information 1 7 Option 001 provides a more accurate and stable time base oscillator This Temperature Compensated Crystal Oscillator TCXO installation modifies the rear panel so that the connector is used only as a MONITOR output As a result an external standard i e time base cannot be applied to the Option 001 counter l 1 8 INSTRUMENT IDENTIFICATION 1 9 Hewlett Packard uses a 2 section 10 character serial number 0000A00000 mounted on the rear panel to identify the instrument The first four digits are the serial prefix and the last five digits refer to the specific instrument The alphabetical character identifies the country of manu facture If the serial prefix on your instrument differs from that listed on the title page of this manual there are differences between the manual and your instrument Any lower serial pre fixes are documented separately in this manual and higher serial prefixes are covered by a manual change sheet included with the manual 1 10 The printed circuit boards within the instrume
11. nt are identified by a 2 section 10 digit part number e g 05382 60004 and a 4 digit series number e g SERIES 1804 The series number identifies the electrical characteristics of the complete printed circuit assembly A replacement circuit board assembly may have a different series number than the assembly originally supplied with the instrument Therefore when troubleshooting a circuit board assembly ensure that the series number on the schematic diagram matches the series number on the board assembly If the series number of the assembly is lower than the number on the schematic diagram in Section IX refer to backdating information in this manual for change information If the series number on the assembly is higher than the number on the schematic diagram the change information is provided in a manual change sheet which is available from the nearest Hewlett Packard Sales and Service Office 1 1 Model 5382A General Information 1 11 MICROFICHE NUMBER 1 12 On the title page of this manual below the manual part number is the microfiche part number This number may be used to order 4 x 6 transparencies of the manual The microfiche package also includes the latest Manual Change Supplements as well as all pertinent Service Notes 1 13 RECOMMENDED TEST EQUIPMENT 1 14 Table 4 1 lists test equipment which is recommended for confirming instrument specifica tions i e in cabinet performance tests as well as troubleshoo
12. on 001 time base adjustment Figure 3 2 Rear Panel Operating Controls and Connectors Cont d
13. s installed Use a Listed 500 milliampere slow blow fuse for 100 volt or 120 volt operation or a Listed 250 milliampere slow blow fuse for 220 volt or 240 volt operation 2 10 If the counter is to be used in the USA with a 240 volt 60 Hz power source use a power cord with a Listed connector of the type shown in Figure 2 1 Figure 2 1 Power Cord Connector for 240 Volt Operation Model 5382A Installation 2 11 MOUNTING 2 12 The 5382A Frequency Counter is built to be portable and may be used at any test bench position Two kits are available for the user who desires to mount his counter on a rack Kit 10851A permits one counter to be mounted in the center of a rack while Kit 10852A allows the user to mount two counters side by side on a rack Figure 2 2 describes how to mount the counter onto the rack provided Figure 2 3 shows these kits and provides a component parts list REMOVE BOTH PLASTIC FEET FROM INSTRUMENT LOOSELY INSTALL STANDOFFS BETWEEN SCREW HOLES IN BRACKET PUSH INSTRUMENT THRU PROFILED CUTOUT IN BRACKET TIGHTEN CLAMPING SCREWS agli Rigg CLAMPING SCREWS BRACKET STANDOFF o N R N amp N N N N 4 R N N Figure 2 2 Rack Mounting Instructions Model 5382A Installation 38 8 89 CM 48 26 CM 19 00 QUANTITY TeMi PART DESCRIPTION KIT KIT NUMBER IO8SIA 0852 f 48 26CM So 6732 5 INCH i ie 23
14. ting and adjusting the instrument 1 15 SPECIFICATIONS 1 16 Table 1 1 lists the 5382A specifications Table 1 1 Frequency Range 10 Hz to 225 MHz Sensitivity 25 mV rms 30 Hz to 10 MHz 50 mV rms 10 Hz to 225 MHz input Impedance 1 MQ lt 40 pF Accuracy 1 count timebase error Resolution Direct count 1 Hz in 1 second Gate Time 0 1 second 1 second 10 seconds Display 8 LED Digits nonsignificant zero blanking Rear Panel Input Sensitivity 250 mV rms Impedance gt 5000 Maximum Input 10V rms Control Internal External Switch on rear panel Ratio Rear Panel Input 100 kHz to 10 MHz External Frequency Standard Rear Panel Input 10 MHz Timebase Output Frequency 10 MHz timebase Voltage 200 mVpp into 500 load Control Active with Rear Panel Internal External switch in Internal position Timebase Frequency 10 MHz Aging lt 0 3 ppm month Temperature 2 5 ppm 0 C to 40 C Line Voltage 0 5 ppm for 10 line change Overfiow LED lamp indicator when most significant digit overflows Specifications Reset Manual selection of reset occurs when GATE TIME switch is between three normal positions Package Rugged high strength metal case Operating Temperature 0 C to 40 C Power Requirements 100 120 220 240 V rms 5 10 48 440 Hz 30 VA maximum Weight Net 2 2 kg 4 75 lb Shipping 2 8 kg 6 1b Dimensions 98 mm H x 160 mm W x 248 mm D 3 5 x 6 25 x 9 75 Rack Mount Kits 34 h
15. ve during the warranty period provided they are returned to Hewlett Packard No other warranty is expressed or implied We are not liable for consequential damages Service contracts or customer assistance agreements are available for Hewlett Packard products that require maintenance and repair on site i For any assistance contact your nearest Hewlett Packard Sales and Service Office Model 5382A General Information re me EST rage iter CORD SET 8120 1378 Figure 1 1 Model 5382A and Equipment Supplied anit Model 5882A General Information SECTION GENERAL INFORMATION 1 1 INTRODUCTION 1 2 This section of the manual gives a description of the instrument information on instrument identification and available options and complete specifications 1 3 INSTRUMENT DESCRIPTION 1 4 The HP Model 5382A Frequency Counter see Figure 1 1 is a direct counting frequency counter that has a range of 10 Hz to 225 MHz Eight display digits are provided Front panel con trols allow a selection of gate times and attenuation factors of the input signal A rear panel con nector and associated selector switch allow connection of an external time base oscillator or monitoring of the internal time base oscillator This feature also allows ratio measurements to be made by the counter When the optional temperature compensated crystal oscillator is included Option 001 the switch is not provided and the co
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