HP 5383A User's Manual
Contents
1. Er g l e V MS P Y BASS 35 8 89 CM t B E 4 E is nn lt i wa iol x a i i P 2a Me se VO Fd LC 19 00 48 26 CM _ 19 00 1 48 26CM A UMBER 108514 10852 MEA 6 32 5 INCH O 2360 0200 FLAT HEAD SCREW FEMALE 0280 0988 Trong orr RACK MOUNTING 10851 00001 BRACKET SINGLE NENNEN RACK MOUNTING O 0852 00001 erem 1 Figure 2 3 Rack Mounting Kit Model 5383A Operation SECTION OPERATION 3 1 INTRODUCTION 3 2 This section contains descriptions of the controls connectors and indicators measure ment techniques and operator checks 3 3 CONTROLS CONNECTORS AND INDICATORS 3 4 Figures 3 1 and 3 2 describe the operation of the 5383A 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 measure ments Using the internal X10 attenuator or external attenuators minimizes this problem Proper selection of the input impedance also allows for stable and accurate frequency mea surements When there is a difference between the signal source impedance and the c2. FREQUENCY COUNTER 5383A C AY EE EMEN 4 Y 59 gt FREQUENCY COUNTER 5383A OPERATING MANUAL SERIAL PREFIX 1628A This manual applies directly to HP Model 5383A Frequency Counters having serial number prefix 1628 NEWER INSTRUMENTS This manual with enclosed Manual Changes sheet applies to HP 5383A 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 1975 5301 STEVENS CREEK BLVD SANTA CLARA CALIF 95050 MANUAL PART NUMBER 05383 90005 Microfiche Part Number 05383 90006 Printed SEP 1976 maa erum ILLND HEWLETT 0 PACKARD Model 5383A General information SECTION 1 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 5383A see Figure 1 1 is a direct counting frequency counter that has a range of 10 Hz to 520 MHz Nine display digits provide a resolution of one Hz per second for inputs up to 520 MHz Front panel controls allow a selection of gate times input impedances and attenuators A rea
3. instrument is damaged or fails to meet performance tests notify the carrier and the nearest Hewlett Packard Sales and Service Office immediately Performance check procedures are located in Section V 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 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 2 7 ENVIRONMENT Conditions during storage and shipment should normally be limited as follows Maximum altitude 25 000 ft b Minimum temperature 40 F 40 C c Maximum temperature 167 F 75 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 If any other supply voltage is to be used change the rear panel switch settings as follows Using a small screwdriver a pencil or other suitable tool set the LINE VOLTAGE SELECTOR switches on the counter s
4. 300 X1 nominal fuse protected IM X1 40 pF shunt X10 40 pF shunt attenuation factor of 10 ATTENUATION X10 in IMO SENSITIVITY INPUT Switch Position Frequency Range 0 Sensitivity RMS IMO X1 20 Hz to 10 MHz 25 mV 10 Hz to 50 MHz 50 mV MAXIMUM INPUT INPUT Switch Position 500 X1 Fuse protected DC to 520 MHz 3 5V rms 24 dBm Cro 4 MHz 20 DC to 40 MHz 200V sum of dc peak ac 40 Hz to 100 kHz 200V dc 250V rms ac 200V sum of dc peak ac 200V dc 250V rms ac 1 MHz to 50 MHz 200V de 2 5 104 rms Freq in Hz 50 MHz to 520 MHz 200V dc 5V rms ac ACCURACY 1 Count Time Base Accuracy GATE TIME Manually selected 1 second 1 second 10 seconds RESOLUTION Direct Count GATE TIME 15 MHz 1MNX1 IMO X10 Least Significant Digit Value OVERFLOW LED indicator lamp shows display overflow RESET Manual reset occurs when GATE TIME switch is between three normal positions For example The maximum signal level when 1MQ X1 input impedance is selected for a 100 kHz input is 2 5 10 00x10 7 250V rms 200V de 1 3 5383 General Information Table 1 2 Specifications Continued STANDARD TIME BASE DATA Time Base 10 MHz Xtal Oscillator 3 ppm per month due to aging 2 5 ppm due to temperature variations between 0 C and 40 C 10 5 pp
5. antenna and proper attenuators NOT THE TRANSMITTER ANTENNA DO NOT CONNECT DI RECTLY TO COUNTER IN PUT Use an inductive loop pick up device and appro priate attenuators Transmitter or other high voltage oscillator circuits High frequency high power high impedance circuits Active probe system e g HP 1120A or equivalent NOTE A probe power sup ply e g 1122A or equivalent is required passive attenuator probes High frequency high impedance low power output Coaxial cable with dc block 500 X1 ing capacitor e g HP 10240B or equivalent High frequency signals with a dc level other than zero volts Model 5383A Operation 3 10 OPERATOR CHECKS 3 11 These quick preliminary checks should be performed the operator when an instrument failure is suspected Problem I No display digits are illuminated CHECK a Equipment cable plugged in b Proper line voltage selected on rear panel Refer to Paragraph 2 8 Rear panel fuse blown Replace blow fuse with a Listed Y Amp slow blow 125 volt fuse HP Part Number 2110 0008 for 100 120 volt operation or a Listed Y Amp HP Part Number 2110 0201 slow blow 250 volt fuse for 220 240 voit operation Problem All display digits are not illuminated This is normal The counter provides a leading zero blanking feature which blanks n
6. efix 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 prefixes are documented separately in this manual and higher serial prefixes are covered by a manual change sheet included with the manual CGATETIME 00000000000 EN 05 MHz 15 MHz F igure 1 1 Model 5383A Frequency Counter 1 1 5383 General Information 1 10 Theprinted circuit boards within the instrument are identified by a 2 section 10 digit part number e g 05383 60001 and 4 digit series number e g SERIES 1508 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 VIII refer to backdating information in this manual for change information If the series number 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 11 MICROFICHE NUMBER 1 12 On the title pa
7. ge of this manual below the manual part number is the microfiche part number This number may be used to order 4x 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 1 1 lists test equipment which is recommended for confirming instrument specifications i e in cabinet performance tests as well as troubleshooting and adjusting the instrument Equipment Type Oscilloscope Table 1 1 Recommended Test Equipment Required Characteristics Suggested Model 50 MHz Bandwidth HP 180A System 10 Hz to 10 MHz HP 651B 25 mV Output 10 MHz to 520 MHz 25 mV Output Test Oscillator Signal Generator HP 8654A DVM 0 25V Range HP 970A Frequency Counter High stability 10 MHz HP 5328A with Option 10 frequency standard 5345A 50 Ohm 50 Ohm Termination HP 11048C Connector A Adjustments P Performance Test T Troubleshooting 1 15 SPECIFICATIONS 1 16 Table 1 2 lists the 5383A specifications 1 2 XL Model 5383A General Information Table 1 2 Specifications FREQUENCY RANGE 10 Hz to 520 MHz DISPLAY Nine segment LED digits DISPLAY TEST RESET function activated with GATE TIME switch illuminates all segments of all digits INPUT IMPEDANCE Three selections
8. m due to 10 line power variation Time Base Output Frequency 10 MHz Time Base Voltage 200 mV peak to peak into 500 Control Active when the INT EXT switch is in INT position External Frequency Standard Input rear panel 10 MHz Rear Panel Input Sensitivity 250 mV rms Impedance gt 5000 Maximum Input 10V rms Control Internal External rear panel switch at EXT Ratio Rear Panel Input 100 kHz to 10 MHz OPERATING TEMPERATURE 0 C to 40 C POWER REQUIREMENTS 100 120 220 and 240V rms 5 10 48 Hz to 440 Hz 30VA max WEIGHT Net 2 2 kg 4 75 lbs Shipping 2 7 kg 6 lbs DIMENSIONS 89 mm x 160 mm W x 248 mm D 3 5 in H x 625 in W x 9 75 in D OPTION 001 TEMPERATURE COMPENSATED XTAL OSCILLATOR Does not provide rear panel input capability TIME BASE DATA Frequency 10 MHz TCXO Stability 0 1 ppm per month due to aging 1 ppm due to temperature variations between 0 C and 40 C 0 1 ppm due to 10 line power variation Rear Panel Input Not availabie with Option 001 5383 installation SECTION Y 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 f the shipping carton is damaged ask that the carrier s agent be present when the instrument is unpacked Inspect the instrument for damage such as scratches dents broken switches etc If the
9. nector Switch Position OSCILLATOR Connector Function EXT Provides a nominal 500 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 Figure 3 2a Rear Panel Operating Controls and Indicators Model 5383 Operation POV 4 220 VOLTAGE SELECTOR CAUTION VOLTAGE SELECTION SERIEL NO 1540400715 Redi jt 5 Ay i MONITOR FUTRUT TCXO OPTION 001 MSN e X Si 5 Ty PLACA ix y 6 2 2 OPTION 001 REAR PANEL 5 OSCILLATOR ADJ control The ADJ control is used to set the frequency of the internal time base oscillator Refer to the Adjustment Paragraphs 5 10 or 5 13 in Section V 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 7 MONITOR OUTPUT connector Serves as an internal time base oscillator monitor out put connector only see NOTE under item 3 for Option 001 TCXO ADI control Same as 5 above Refer to Paragraph 5 13 in Section V for infor mation on Option 011 time base adjustment Figure 3 2b Rear Panel Operating Controls and Indicators Continued 3 8
10. not shown see Figure 8 1 This switch is positioned in the direction of the arrow gt to select a 100 kHz low pass filter This filter permits stable frequency measurements in the 10 Hz to 100 kHz range when the input contains higher frequency noise Figure 3 1 Front Panel and Internal Controls Indicators and Connectors Continued Model 5383A Operation QUV i NS OV 2209 SE LEG ORA 240 poten CAUTION CHECK PROPER 5 EM VOLTAGE SELECTION SERIAL NG i54041n9875 Mete E soo maT 2 500 1300 1206V B2OSOmA 220 240V 3 4 D 2 STANDARD REAR PANEL 1 POWER connector Connect the source of ac power to the rear panel power connector 2 FUSE A Listed 0 500 ampere slow blow fuse is required for 100 volt 120 volt oper ation a Listed 0 250 ampere 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 oscil lator or provides an input path for an external time base oscillator depending on the EXT INT switch setting The monitor output is designed to drive a 500 load b The internal time base oscillator output may be con nected to the front panel input jack with INPUT switch in the 500 X1 position to provide a convenient counter self check operation 4 EXT INT switch Selects the function of the OSCILLATOR con
11. nput frequency goes higher than 100 kHz Remove the covers refer to Paragraph 5 17 note the WARNING Set the board mounted FILTER switch to the left i e away from the gt 3 12 Finally this quick and convenient loop around check is provided to verify normal operation of the instrument Set the rear panel INT EXT switch exists the standard counter only to the INT position Set the front panel INPUT switch to the 500 X1 position Connect a coaxial cable between the rear panel OSCILLATOR jack and the front panel INPUT jack 10 MHz display 1 least significant digit indicates that the counter is operating normally For loop around check of the MO X1 or X10 INPUT paths use 500 Feedthru connector see Table 5 1 test 2 items e f 8 3 13 If after these operator checks are performed the counter does not operate normally referto the Troubleshooting Charts Figure 5 1 5 2in Section V for fault analysis procedures Model 5383A Operation GATE TIME e 15 MHz 18 MHz 10S 51 Hz Es 1 DISPLAY a Nine LED light emitting diode display digits are provided b A decimal point indicates display resolution for each GATE TIME selection c An overflow indicator dot at the upper left position shows when the input fre quency has exceeded the counting capability of the instrument d Leading zero blanking surpresses display of non significant digits refer to Pa
12. on significant display digits The following displays are correct when a signal is not applied to the counter input GATE TIME Switch DISPLAY Position a 1 S MHz 1S MHz 10 S Hz b For further assurance set the GATE TIME switch between any two positions The following display indicates that all display digit circuits are operating correctly NOTE When positioned for the display digits test function GATE TIME switch 4152 may or may notopen the ground lead to the decimal point input of the display LED For this reason the decimal point may or may not be illuminated during this digit test 3 3 aa vr Model 5383A Operation Problem The frequency counter is not counting the input signal CHECK a 15 the rear panel INT EXT switch in the INT position This switch exists in the standard counter only b Does this problem occur only when the front panel INPUT switch is in the 500 or X1 position This indicates that the internal fuse is blown Remove instru ment covers to gain access to this fuse refer to Paragraph 5 17 note WARNING Replace fuse with spare provided on the Main Board Assembly Order another 1 amp 125 volt fuse HP Part Number 2110 0436 NOTE REMEMBER TO KEEP THE INPUT SIGNAL LEVEL BELOW 3 5V RMS OR 24 DBM WHEN THE INPUT SWITCH IS IN THE 500 Xi c Does this problem occur only when the INPUT switch is in the IMQ X1 or X10 positions and the i
13. ounter 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 5383A input impedances and attenuation permits proper mea surements Table 3 1 page 3 2 provides some suggested measurement techniques to help the user obtain maximum use of the frequency counter 3 7 Ratio Measurements Standard Counter Only 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 2 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 frequency at front panel INPUT Display Value freq at rear panel OSCILLATOR X 10 if GATE TIME is Is where X lt 10 if GATE TIME is 1s 107 if GATE TIME is 10s 3 9 Note that in the above formula the term X changes by a factor of 107 when 10s GATE TIME is set The GATE TIME is the same when 1s and 1s selections are made Note also that actual measurement time increases as the frequency applied to the OSCILLATOR EXT IN connector decreases If the frequenc
14. r panel connector and associated selector switch allow either an external time base oscillator input or monitoring of the internal time base oscillator When the optional temperature compensated crystal oscillator TCXO is installed the rear panel connector serves only as a time base monitor In addition a rear panel power selector switch permits the 5383A Counter to operate with line voltages ranging from 90V to 252V line frequency range 48 to 440 Hz 1 5 ACCESSORIES AND OPTIONS 1 6 Two accessories are available for mounting the 5383A 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 11 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 aresult an external standard i e time base cannot be applied to the Option 001 counter 1 8 INSTRUMENT IDENTIFICATION 1 9 Hewlett Packard uses a 2 section 10 character serial number 0000400000 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 manufacture If the serial pr
15. ra graph 3 11 2 LINE switch The ac power LINE switch is a push ON push OFF type When ON the pushbutton is set further into the front panel 3 GATE TIME switch a Measurement Time selects one of the following measurement times and display resolutions The Decimal Point is GATE TIME Switch Position Measurement Time Positioned so that Display Reads IN 1 S MHz 1 10 second MHz 1 S MHz 1 second MHz 10 S Hz 10 seconds Hz Figure 3 1 Front Panel and Internal Controls Indicators and Connectors 3 5 Model 5383A Operation b When this switch position is changed the frequency counting circuits are automati cally reset to zero count The new frequency count is then displayed after a delay which is determined by the GATE TIME position i e the measurement time c Digit self test provides a display digit self test capability When this switch is set between two GATE TIME positions all display digits should shown 8 see NOTE in Paragraph 3 11 INPUT switch Selects one of the following input impedances and attenuations 500 X1 This input is protected from input signals that exceed 3 5V rms 24 dBm by an internal 0 1 amp fuse refer to Paragraph 3 11 IMQ X1 Shunt capacity less than 40 pf 1 X10 Shunt capacity less than 40 pf INPUT connector Connects signal to be measured to internal circuits Impedance and attenuation at this jack is selected by INPUT switch INTERNAL FILTER switch
16. rear panel to the positions shown next to the desired voltage marking on the rear panel E b Ensure that the correct fuse is installed Use a L sted 0 500 ampere slow blow fuse for 100 volt or 120 volt operation Use a Listed 0 150 ampere slow blow for 220 volt or 240 volt operation 2 1 Model 5383A Installation 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 2 POLE 3 WIRE 2 11 MOUNTING 2 12 The 5383A Frequency Counter is built to be portable and may be used at any testbench 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 mountthe counter onto the rack provided Figure 2 3 shows these kits and provides a component parts list Figure 2 1 Power Cord Connector for 240 Volt Operation REMOVE BOTH PLASTIC FEET FROM INSTRUMENT LOOSELY INSTALL STANDOFFS BETWEEN SCREW HOLES IN BRACKET PUSH INSTRUMENT THRU PROFILED CUTOUT IN BRACKET TIGHTEN CLAMPING SCREWS Bun CLAMPING SCREWS BRACKET PL ONNO LIP ld STANDOFF N Te N Figure 2 2 Rack Mounting Instructions Model 5383A installation 9 la z a d A
17. y applied to the OSCILLATOR EXT IN connector is 1 MHz for example and GATE TIME is set to 1s actual measurement time will be 10 seconds 3 1 mn Sus Model 5383A Operation Table 3 1 Measurement Techniques Recommended 5383A Impedance Attenuator Selection Signal Source Recommended Connection Via Coaxial cable or 50 ohm 500 X1 oscilloscope probe system e g HP 10020A or equivalent Signal Generators or cir cuits with output a Frequency range from 10 MHz to 520 MHz b Level less than 3 5V rms or 24 dBm Impedance of 500 Via external 50 ohm coaxial attenuator and coaxial cable Signal Generators or cir circuits with output 500 X1 a Frequency range from 10 MHz to 520 MHz b Level exceeding 3 5V rms or more than 24 dBm Impedance of 500 MO X1 IMD X10 Via appropriately termi nated coaxial cable 1 oscilloscope probe e g HP 10004D or equivalent Signal Generators cir cuits with output fre quency less than 50 MHz or high voltage circuits 10 Hz to 100 kHz signals with high frequency noise components X1 or IMQ X10 with internal 100 kHz low pass filter selected see Figure 3 1 item 6 Via coaxial cable or oscillo scope probles DO NOT CONNECT DI RECTLY TO COUNTER IN PUT Use a pick up
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