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Model 5305B

Operation

SECTION IX E

5305B 1300 MHz COUNTER

SUBSECTION III

OPERATION

9E-3-8. The frequency range of Channel B depends on the
mode of operation - normal or high resolution. In the
normal mode, Channel B covers 50 Hz to 100 MHz. With
high-resolution selected, Channel B covers 50 Hz to 10
kHz. The high resolution mode uses a phase-locked
multiplier to increase resolution by a factor of 1000. Input
impedance is 1 Megohm shunted by less than 40 pF. A 10
to 1 divider probe can be used to increase the input
impedance to 10 Megohms.

9E-3-1. INTRODUCTION

9E-3-2. This section covers operating information for the
5305B including a description of controls, indicators, and
connectors, resolution, input levels, and operating
procedures for frequency measurements and self check.

9E-3-3. OPERATING CHARACTERISTICS

9E-3-9. RESOLUTION

9E-3-4. The 5305B Counter performs frequency mea-
surements by means of two separate input channels. These
channels provide a combination of low frequency
measurements and high-sensitivity, high frequency
measurements. Measurement capability is applicable to all
frequencies in the VHF and mobile communication bands in
addition to a significant portion of the UHF band. The
10855A Preamplifier can be used to boost the UHF input
sensitivity by 22 dB.

9E-3-10. The 5305B has a RESOLUTION switch which
determines the least-significant digit (LSD) displayed. For
example, with an input of 123,456 Hz, setting the
RESOLUTION switch to 1 kHz places the "3" in the LSD.
Setting the switch to 10 Hz, places the "5" in the LSD.
Resolution can be expressed in terms of the counter's gate
time, as shown in Table 9E-3-1.

9E-3-5. Input channels

Table 9E-3-1. Resolution vs Gate time

Figure 9E-3-1. dBm-to-Voltage Conversions

9E-3-6. Two input channels are provided, Channel A - 90
MHz to 1300 MHz and Channel B - 50 Hz to 100 MHz.
Both channels have 20 mV rms sensitivity.

9E-3-7. Channel A prescales the input frequency by 16 and
can be used to measure CW or burst signals. Input coupling
is ac. An AGC circuit is included to give a dynamic range
of >47 dB. An internal fuse, located inside the input jack,
protects circuitry from overloads greater than 5V rms. Note
that a blown fuse may not prevent the counter from
measuring high-frequency inputs. In this instance, the
counter’s circuitry is no longer protected,ie.,as it would be
at lower frequencies by a good open circuit. If the fuse
blows, a replacement fuse is supplied with the instrument.

RESOLUTION GATE

TIME

80 MHz

1100 MHz

.1 Hz

10 s

160 s

1 Hz

1 s

16 s

10 Hz

.1 s

1.6 s

100Hz .01s .16s

1 kHz

1 ms

16 ms

10 kHz

.1 ms

1.6 ms

9E-3-1

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Содержание 5305 B

Страница 1: ...O P E R A T I N G A N D S E R V I C E M A N U A L 5305 B 1300 MHz COUNTER ...

Страница 2: ...e date of shipment Hewlett Packard will at its option repair or replace products which prove to be defective during the warranty period provided they are returned to Hewlett Packard and provided the preventive maintenance procedures in this manual are followed Repairs necessitated by misuse of the product are not covered by this warranty NO OTHER WARRANTIES ARE EXPRESSED OR IMPLIED INCLUDING BUT N...

Страница 3: ...nclosed Manual Changes sheet applies directly to HP Model 5305B 1300 MHz Counters having Serial Prefix numbers above 1616A Subsection VII of this document contains information pertinent to all older instruments SERIAL PREFIX 1616A NEWER INSTRUMENTS OLDER INSTRUMENTS Printed AUG 1976 Copyright HEWLETT PACKARD COMPANY 1976 5301 STEVENS CREEK BLVD SANTA CLARA CALIF 95050 MANUAL PART NO 05305 90008 MI...

Страница 4: ...11 1300 MHz Channel Input Levels 9E 3 2 IV THEORY OF OPERATION 9E 4 1 9E 4 1 Introduction 9E 4 1 9E 4 3 A1 LogicBoard 9E 4 1 9E 4 5 High Impedance Amplifier 9E 4 1 9E 4 12 Counting Circuits 9E 4 1 9E 4 16 Frequency Multiplier 9E 4 2 9E 4 30 1300 MHz Circuit 9E 4 4 9E 4 32 A2 1300 MHz Amplifier Assembly 9E 4 4 V MAINTENANCE 9E 5 1 9E 5 1 Introduction 9E 5 1 9E 5 3 Recommended Test Equipment 9E 5 1 ...

Страница 5: ...9E 6 8 9E 8 1 Counter Signal List 9E 8 1 LIST OF FIGURES figure Page 9E 3 1 dBm to Voltage Conversions 9E 3 1 9E 3 2 Front Panel Controls Connectors and Indicators 9E 3 2 9E 3 3 Self Check Measurements 9E 3 3 9E 3 4 100 MHz Channel Frequency Measurements 9E 3 4 9E 3 5 90 MHz 1300 MHz Channel Frequency Measurements 9E 3 5 9E 4 1 Phase Detector Block Diagram 9E 4 2 9E 4 2 VCO Waveforms at about 2MHz...

Страница 6: ...the counter s replaceable parts and information for ordering parts SECTION VII MANUAL CHANGES provides information necessary to backdate the manual to cover earlier instruments SECTION VIII SCHEMATIC DIAGRAMS THEORY contains schematic diagrams and component locators 9E 1 3 DESCRIPTION 9E 1 4 The 5305B extends the frequency measuring capability of the 5300 Measuring System to the UHF range The coun...

Страница 7: ...e Office listed at the back of this manual Instruments having a lower serial prefix than that listed on the title page are covered in the backdating Section VII 9E 1 8 EQUIPMENT SUPPLIED 9E 1 9 The 5305B is supplied with an operating and service manual 9E 1 2 9E 1 10 ACCESSORIES AVAILABLE 9E 1 11 For high sensitivity UHF applications the 10855A Preamplifier can be used with the 5305B The 10855A co...

Страница 8: ...er the input is beyond the proper frequency range or too weak to measure or during the brief acquisition time following signal interruption Automatic Hold In high resolution mode the last valid reading is held in display when input is terminated RESOLUTION SELECTABLE Normal Mode 50 Hz to 1300 MHz 0 1 Hz to 10000 Hz in decade steps corresponding to gate times of 10 sec to 0 0001 sec in decade steps...

Страница 9: ... 1821A Sampling Plug In 1000 MHz HP 1810A Optical Sampling Plug In If desired to measure up to 1300 MHz HP 1811A 1432A Synthesized Signal Generator 1300 MHz HP 8660B 86602A Power Meter 30 dBm to 10 dBm HP 435A Power Sensor 90 MHz to 1300 MHz HP 8481A Test Oscillator 50 Hz to 10 MHz 3V rms HP 651B Mainframe HP 5300B Digital Voltmeter 5V to 20 V dc HP 5306A Power Splitter 50 ohms 90 MHz to 1300 MHz ...

Страница 10: ...GING To protect valuable electronic equipment during storage and 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 Here is one recommended packaging method a The origi...

Страница 11: ...UHF band The 10855A Preamplifier can be used to boost the UHF input sensitivity by 22 dB 9E 3 10 The 5305B has a RESOLUTION switch which determines the least significant digit LSD displayed For example with an input of 123 456 Hz setting the RESOLUTION switch to 1 kHz places the 3 in the LSD Setting the switch to 10 Hz places the 5 in the LSD Resolution can be expressed in terms of the counter s g...

Страница 12: ...a wrench to remove and tighten the fuse jack Replacement HP part number for fuse is 2110 0301 accepts input frequencies from 50 Hz to 100 MHz With RANGE set to B HIGH RESOLUTION accepts frequencies up to 10 kHz Input sensitivity is 20 mV rms Input impedance is 1 Megohm shunted by less than 40 pF Channel is ac coupled 5 RANGE switch Allows selection of either of the two input channels or the self c...

Страница 13: ... 1 M Hz 1 kHz 010 000 M Hz 00010 000 1 M Hz 100 Hz 10 0000 M Hz C 0010 0000 1 M Hz C 10 Hz 0 00000 M Hz C 010 00000 1 M Hz C 1 Hz 000 000 K Hz C 10000 000 1 K Hz C 1 Hz 00 0000 K Hz C 0000 0000 1 K Hz C 1 Apply input power to 5300 ac receptacle 2 Turn counter on with 5300 SAMPLE RATE control Adjust SAMPLE RATE for minimum display time full ccw 3 Set RANGE switch to CHK position Display is a functi...

Страница 14: ...GE switch to B position 4 Connect input signal to 100 MHz jack 5 Set RESOLUTION switch for number of digits desired in display 6 Adjust SAMPLE RATE control for convenient interval between measurements 7 For high resolution set RANGE switch to B 10 kHz MAX HIGH RESOLUTION X1000 This limits the input frequency to 10 kHz but gives resolution up to 4 decimal places 9E 3 4 ...

Страница 15: ...LE RATE control 3 Set RANGE switch to A position 4 Set RESOLUTION switch to 10K 5 Set ATTENUATOR control to MIN position CAUTION Input level must not exceed 5V rms 6 Connect input signal to 90 MHz 1300 MHz jack 7 Adjust ATTENUATOR control until counter stops displaying then back again until counter gives a stable display of the proper frequency 9E 3 5 ...

Страница 16: ... This causes Q5 and Q4 to turn off which results in Q3 turning on The low source to drain impedance 50Ω shunts resistor R12 The signal passes unattenuated through Q3 to amplifier U6C The output at U6B 6 feeds the signal through R33 and C25 The signal is converted to dc by CR9 C24 and R35 As the input signal level increases the AGC voltage at U8 1 increases above 6 volts to a maximum of 2 volts Bot...

Страница 17: ...ay Therefore the Σ4 output goes Low for one count out of eight and switches the latch from its high impedance state to the low impedance active state This occurs for each scan of the display When the measurement ends the XFER line enables U4 and new data enters the latch with the next clock pulse from U11 4 9E 4 17 The Frequency Multiplier circuit contains a PLO Phase Locked Oscillator that is use...

Страница 18: ...l operation or not In the high resolution range there is always a signal from the VCO to the 5305B counting circuitry whether or not there is a signal at the Channel B input As a result the counter is always armed and tries to count the VCO frequency typically 25 kHz even without an input This is prevented by the search indicator circuit U16A U18C U24A Q19 9E 4 24 When the detector s inputs are in...

Страница 19: ... Q13 converts the signal to a positive driven ECL H 4 3V L 3 2V Q11 provides a low impedance to U12 s input 9E 4 33 The 1300 MHz Amplifier assembly A2 consists of circuitry to amplify prescale and detect signals up to 1300 MHz Input signals are routed through a protective fuse F1 to the 1 3 GHz limiter circuitry The limiters consist of CR2 7 1 4 and limit the input to approximately 5V rms A voltag...

Страница 20: ... fully rearward it is necessary to press the latch handles gently away from the center of the instrument to unlock them c When latches are fully extended rearward the 5300 and 5305B cast housings should be separated by about 1 8 inch d Lift the 5300 gently away from the 5305B e Separate 5305B Board Assembly from the cast housing as follows refer to Figure 9E 5 1 1 Press rear plastic nylon retainin...

Страница 21: ...Model 5305B Maintenance STEP A STEP B 9E 5 2 Figure 9E 5 1 Separation Procedure ...

Страница 22: ...al Generator HP 11048A 50 ohm Feed Thru Termination a On 5305B set RANGE to B and RESOLUTION to 100 Hz b Set 8660B 86602A Signal Generator to 100 MHz at 20 mV c Connect signal generator output to 100 MHz jack of 5305B using 50 ohm feed thru d Check frequencies in band of 100 MHz down to 1 MHz Counter should display selected frequency count light C must be flashing e Disconnect signal generator and...

Страница 23: ...tt Packard Model 5305B Test Performed by 1300 MHz COUNTER Serial No Date Description Check 1 SELF CHECK ٱ 2 CHANNEL A ٱ Sensitivity 20 m V ٱ Frequency Range 90 1300 MHz ٱ Attenuator ٱ 3 CHANNEL B ٱ Sensitivity 20 m V ٱ Frequency 50 Hz 100 MHz ٱ High Resolution Mode ٱ ...

Страница 24: ...justment procedure for the Channel A amplfier a On 5305B set RANGE to A RESOLUTION to 1K and ATTENUATOR to MIN Figure 9E 5 2 Test Setup for 1300 MHz Adjustment 9E 5 5 9E 5 15 ADJUSTMENTS b Set A2R13 and A1R71 to full ccw Set A2R22 to mid range c Connect 5300B 5306A voltmeter positive lead to J2 pin 5 and negative lead to rear panel d Adjust A1R79 for 15V reading e Connect test setup shown in Figur...

Страница 25: ...ect output of generator to 100 MHz input using a 50 ohm feed thru i Increase generator level until counter displays stable 100 MHz 1 count J Adjust A1R18 ccw to point where 5305B barely continues to make measurements Any more ccw rotation will stop gating k Input signal must be 20 mV or below 9E 5 21 TROUBLESHOOTING 9E 5 22 Use the following troubleshooting information the waveforms and schematic ...

Страница 26: ...proceed to Address Decoder Troubleshooting in Paragraph 9E 5 31 also at this time note the unique displays listed under that heading b If only the least significant digit is displayed and all others are zero check U13C Q9 and Q10 c If only decimal point problems occur check A1P1 34 46 47 and 48 and the RESOLUTION switch d Check U13A 5 for presence of input signal using oscilloscope If not present ...

Страница 27: ...Hz the frequency should relate roughly to the voltage at U23 6 If not probably trouble is in circuitry associated with Q16 R83 C42 or U24 9 If there is no indication at U21 9 check the same circuits Also check that U23 6 is above 4 volts otherwise the VCO tends to shut off CR17 should prevent this 9E 5 37 If there is no indication at U21 9 connect the scope to U24 9 and check for the following saw...

Страница 28: ...ould saturate for about 1 10 second This should pull J1 32 50 pin connector low and the system should manual reset Model 5305B Maintenance All 8 s should show in the display 5300B for 1 10 second then 0 s until new measurement displayed at end of gate time If not there are problems around Q19 R91 R92 R93 or C48 9E 5 44 SLOW ACQUISITION If the 5305B takes more than about 1 second to make a measurem...

Страница 29: ...A ampere BCD binary coded decimal COMP composition K degree Kelvin ac alternating current BD board COMPL complete DEPC deposited carbon ACCESS accessory BE CU beryllium copper CONN connector DET detector ADJ adjustment BFO beat frequency CP cadmium plate diam diameter AID analog to digital oscillator CAT cathode ray tube DIA diameter used in AF audio frequency BH binder head CTL complementary tran...

Страница 30: ...ce VSWR voltage standing wave INCL include s N C normally closed RH round head right hand ratio INP input NE neon RLC resistance inductance VTO voltage tuned oscillator INS insulation NEG negative capacitance VTVM vacuum tube voltmeter INT internal nF nanofarad RMO rack mount only V X volts switched kg kilogram NI PL nickel plate rms root mean square W watt kHz kilohertz N O normally open RND roun...

Страница 31: ...60 3879 CAPACITOR FXD 01UF 20 100WVDC CER 28480 0160 3879 A1C33 0160 3879 CAPACITOR FXD 01UF 20 100WVDC CER 28480 0160 3879 A1C34 0160 3879 CAPACITOR FXD 01UF 20 100WVDC CER 28480 0160 3879 A1C35 0180 0098 1 CAPACITOR FXD 100UF 20 20VDC TA 56289 150D107X0020S2 A1C36 0180 1701 CAPACITOR FXD 6 8UF 20 6VDC TA 56289 150D685X0006A2 A1C37 0160 4084 CAPACITOR FXD 1UF 20 50WVDC CER 28480 0160 4084 A1C38 0...

Страница 32: ...CC TC 300 800 01121 BB2415 A1R7 0683 2015 4 RESISTOR 200 5 25W FC TC 400 600 01121 CB2015 A1R8 0698 5175 6 RESISTOR 360 5 125W CC TC 330 800 01121 BB3615 A1R9 0683 2015 RESISTOR 200 5 25W FC TC 400 600 01121 CB2015 A1R10 0698 7964 RESISTOR 100K 5 125W CC TC 466 875 01121 BB1045 A1R11 0698 5176 RESISTOR 510 5 125W CC TC 330 800 01121 BB5115 A1R12 0698 5180 6 RESISTOR 2K 5 125W CC TC 350 857 01121 B...

Страница 33: ...R 91K 5 25W FC TC 400 800 01121 C89135 A1R83 0683 2715 1 RESISTOR 270 5 25W FC TC 400 600 01121 CB2715 A1R84 0683 3345 RESISTOR 330K 5 25W FC TC 800 900 01121 C83345 A1R85 0683 1025 RESISTOR 1K 5 25W FC TC 400 600 01121 CB1025 A1R86 0683 4305 1 RESISTOR 43 5 25W FC TC 400 500 01121 CB4305 A1R87 0683 1035 RESISTOR 10K 5 25W FC TC 400 700 01121 C81035 A1R88 0683 3615 1 RESISTOR 360 5 25W FC TC 400 6...

Страница 34: ...0 4248 1 CAPACITOR FXD 1000PF 10 50WVDC CER 26654 38X050S102K D A2CR1 1902 0032 2 DIODE ZNR 5 49V 5 DO 7 PD 4W TC 009 04713 SZ 10939 107 A2CR2 1901 0050 2 DIODE SWITCHING 80V 200MA 2NS DO 7 28480 1901 0050 A2CR3 1902 3171 1 DIODE ZNR 11V 5 DO 7 PD 4W TC 062 04713 SZ 10939 194 A2CR4 1901 0050 DIODE SWITCHING 80V 200MA 2NS DO 7 28480 1901 0050 A2CR5 1901 0639 4 DIODE PIN 110V 28480 1901 0639 A2CR6 1...

Страница 35: ...R FUSE 28480 05305 20104 05305 60205 1 CONNECTOR ASSEMBLY BNC 28480 05305 60205 05305 60206 1 CONNECTOR ASSEMBLY SMC 28480 05305 60206 J2 5060 0467 1 MALE PROBE POWER 28480 5060 0467 MISCELLANEOUS PARTS 0370 1099 3 KNOB BASE PTR 5 IN JGK SGI DECAL 28480 0370 1099 0510 0076 2 NUT SHMET 6 32 THD 63 WD STL 78553 C8599 632 24B 0590 0038 1 NUT HEX DBL CHAM 1 2 32 THD 094 THK 28480 0590 0038 1460 1311 1...

Страница 36: ...24546 Corning Glass Works Bradford Bradford PA 16701 24931 Speciality Connector Co Inc Indianapolis IN 46227 26654 Varadyne Inc Santa Monica CA 90403 27014 National Semiconductor Corp Santa Clara CA 95051 28480 Hewlett Packard Co Corporate HQ Palo Alto CA 94304 30983 Mepco Electra Corp San Diego CA 92121 56289 Sprague Electric Co North Adams MA 01247 71785 TRW Elek Components Cinch Div Elk Grove V...

Страница 37: ...616A 9E 7 3 NEWER INSTRUMENTS 9E 7 4 As changes are made newer instruments may have serial number prefixes not listed in Section IX E The manuals for these instruments will be sup plied with Manual Changes sheets containing the required information replace the affected pages with the replacement manual changes pages Contact the nearest Hewlett Packard Sales and Service Office for information if th...

Страница 38: ...ignal to be countend in the mainframe 5 F1 Goes low when the mainframe counter reaches 9 full scale 6 9 Tied to pin 14 7 F2 Time Base Clock 10 MHz or 10 MHz 16 8 INHIBIT High during the measurement cycle low during the display cycle Low signal forces the main gate flip flop in the mainframe 9 OPEN to the open position Low signal forces the main gate flip flop in the mainframe 10 CLOSE to the close...

Страница 39: ...is the code that selects the mainframe counter digit that is to be displayed If the mainframe counter is displayed directly the corresponding lines of the digit address code and the digit select code are connected together The data code A B C D represents the digit to be displayed in binary coded decimal form Data lines can carry the mainframe counter information to the plug on as well as to the d...

Страница 40: ... Diagram Input Signal 9 kHz at 1V rms Oscilloscope HP 180A 1801A 1821A with 10 1 probe Oscilloscope Settings DISPLAY ALT Unless otherwise stated POLARITY Coupling A C TIME DIV 1 ms c e Appears as a sine wave with small input signal d f 1 1V DIV 2 01V DIV 3 02V DIV 4 05V DIV g h 5 05V DIV 6 2V DIV 9E 8 3 ...

Страница 41: ...Model 5305B Schematic Diagrams Part of Figure 8 1 Channel B and Frequency Multiplier Circuits Schematic Diagram Cont d 9E 8 4 ...

Страница 42: ...5 1820 1166 DM85L51N U6 1820 1224 MC10216P U7 23 1820 0493 LM307N U8 1826 0139 MC1458P1 U9 1820 0681 SN74S00N U10 1820 1206 SN74LS27N U11 1820 1443 SN74LS293N U12 1820 0804 MC10106P U13 1820 0803 MC10105P U14 1820 1383 MC10138L U15 16 1826 0174 U17 1820 0817 MC10131P U18 1820 0584 DM74L02N U19 20 21 1820 1442 SN74LS290N U22 1820 0630 MC4044P U24 1820 1307 SN74S132N U25 1820 1225 MC10231P U26 1820 ...

Страница 43: ......

Страница 44: ...MHz input and RESOLUTION switch set to 1 Hz Waveforms 11 thru 16 taken with 100 MHz input 05V DIV 5 µs DIV AC ALT 2V DIV 5 ms DIV DC ALT 1V DIV 5 µs DIV AC ALT 05V DIV 1 µs DIV DC ALT MAG X10 Model 5305B Schematic Diagrams Part of Figure 8 2 Channel A and Logic Board Circuits Schematic Diagram ...

Страница 45: ...hese voltages will vary depending on the position of R13 9E 8 7 ATTN MIN RANGE 1300 MHz ATTN MAX 1 CR5 Anode 10 5V 2 CR5 Cathode 10 2V 1 CR5 Anode 3 1V 3 CR6 Anode 12V 2 CR5 Cathode 2 5V 4 CR6 Anode 11 2V 3 CR6 Anode 0V 5 CR8 Cathode 10 5V 4 CR6 Cathode 0V 6 CR9 Anode 10 2V 5 CR8 Cathode 1 4V 7 CR10 Cathode 8V 6 CR9 Anode 2 0V 8 CR12 Cathode 8V 7 CR10 Cathode 82V 9 CR11 Cathode 8V 8 CR12 Cathode 8...

Страница 46: ... HP Part No Mfr or Industry Part Nc CR1 7 1902 0032 SZ 10939 107 CR2 4 1901 0050 CR3 1902 3171 SZ 10939 194 CR5 6 8 9 1901 0639 CR10 11 12 1901 0179 CR13 1901 0040 U1 1820 0223 LM301AH U2 5088 7017 U3 1820 1695 U4 1820 1694 REFERENCE DESIGNATIONS A1 A2 C1 50 C1 18 CR1 24 CR1 13 J1 L1 3 L1 7 P1 P1 R1 25 Q1 19 U1 4 R1 94 W1 S1 2 TP1 10 U1 28 9E 8 8 ...

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