HP Toaster 4815A User's Manual
Contents
1. 44 a z Jo g J99U8 smoar 19 dUES pue sqoig p SANSIA E Q Q Dp D S E O Nn fx SANAY BYIIGNYS Y JOYA VSIBY INVd 1NOUS OLN ONINOOT wem 0 DNVAIWS LLITMIM AG KEEN 1e E EE St el 390001 A A A Seng Rec i r O 00 Oit aoz Y Prag La pol i K ch eee a nee IBS LA 914 338 oot 6 E SaR via e EI MOBA LNAN Y GN ia Get A giy AS SUDLAYN9ISIO 3INIV3 438 E DH T a Si 46001 KH a t F O z Jn eg JL uva 34061 ele 190001 S en POSI I MONO 333 ON zeg een T he I i SIS ONITEWYS OD gt hte ous SE Sie MUOM LIN ONILW1OS TINNWHI JOVLIOA GYLIY EREIN i se I Sei SALIV r Li EE 3A dA i ag SC l D Ka an gt t 1 200 1 vu ere eonty e q LA DIS 335 Lna im why A q oo TINNYHI J9WI10A e gt Zeen o e zociy INSI 7 5 l DEN CO ASi OL i Cp TANNVHO 39VLI0A Erde wana HAISITANY WIIAIVS T3NNVHD 39VL10A ZYEIY O SSvVsONVE ee a pra 6 914 235 MS JINYY I St ey cae eg ee JONLINOWW Cie NO8 dl AR ENAN NSIS usai 28 sais A A A aste ose eh oa R aaa Ee Sum A 18 O 1 rol yee 189 2 2 914 335 oT em EVEIY NOVA LNANI oo 2 eae ISINA DMITIMYS ond A 1 H T Won A vacly ta X9 G037J4 INV SVIE aew tooo 5 i ee eotty S AO oro CD KO ASt GZO bad atos WHOML3N ONILY10S2. 00600A Accessory Kit 2 Rack Mounting Kit 3 Plugin board extender DIMENSIONS gt gt 24 NOTES a LA DIMENSIONS IN INCHES AND MILLIMETERS REAR APRON RECESS 18 552 3 DETACHABLE POWER CABLE RECOMMENDED CABLE CLEARANCE t 25 4 19 482 8 3 FT 163 425 5 WEIGHT net 39 lbs 17 6 kg shipping 50 lbs 22 5 kg POWER 105 to 125 v or 210 to 250 v 50 to 400 Hz 50 w Table 1 2 Additional Information MEASURING TERMINAL CHARACTERISTICS Configuration Both excitation and measuring circuits are contained in a single sampling probe attached to instrument by a cable Measurement is made between probe center pin and ground pin on probe case Residuals indicated impedance includes approx imately 0 5 ohm resistance and 8 nH induc tance in series with the unknown and 0 3 pF capacitance in parallel with the unknown Impedance 25 ohms in series with 0 01 pF looking into probe Probe is constant current driving source to circuit being measured TEST SIGNAL CHARACTERISTICS Waveshape sinusoidal Level approximately 4 uA on all ranges except 10 ohm scale where it is approximately 13 pA 1 0 External oscillator input Rear BNC connector accepts excitation signal 100 mV 10 into 50 ohms maximum instantaneous rate of change 1 MHz s RFI CHARACTERISTICS Conducted and radiated leakage limits are below those specified for MIL I
3. All instruments with the same serial prefix are the same The group of instruments to which this manual applies directly is identified on the title page For instruments with serial numbers higher than those listed on the title page a Manual Change sheet de scribing the changes is included with the manual The manual for an instrument having special electrical modifications will include an insert sheet describing that modification If a change sheet or special infor mation sheet is missing the information can be sup plied by any Hewlett Packard Sales and Service Office listed at the back of this manual 10207A 5040 0404 Probe to BNC Probe Holder Adapter Kat 10206A Probe Adapter Ly 04815 200770 Ly Probe Center Pins Figure 1 2 1 2 10210A Probe Socket Probe Accessories Section IV Model 4815A Figure 4 1 TOROID 7 CURRENT RECORDER TRANSFORMER l DU ie VOLTAGE e AVERAGE se d CHANNEL EEN DETECTOR ys RF SAMPLER ty TEST SIGNAL SAMPLING See RECORDER PULSES I OUTPUTS PHASE LJ DETECTOR CURRENT CHANNEL SAMPLER N w PHASE ZERO AVERAGE DETECTOR F ye Ay mac ADJUST O MAGNITUDE RANGE N RF MODULATOR AMPLIFIER TO SAMPLERS 20v 20V SAMPLER PULSE ge RF OSCILLATOR GENERATOR SUPPLY RECORDER OUTPUTS L FREQ j Figure 4 1 Simplified Overall Block Diagram Z JO T 39948 SMIO Zotdugeg PUB 9qOIA SANY VITAMVS Y BON VSIBY Model 4815A bie Mer 19
4. 6181D except for RF excitation and sampling pulses emitted from probe The sampling pulses are approximately 75 mV peak to peak from 25 ohm source with a duration of 3 ns occurring at a maximum repeti tion rate of 1 MHz Probe may be stored in front panel probe check socket to obtain full compliance with MIL I 6181D SELF CONTAINED CALIBRATION Probe check 100 ohms 5 at phase angle of 0 2 Model 4815A Section I Paragraphs 1 1 to 1 9 SECTION GENERAL INFORMATION 1 1 DESCRIPTION 1 2 The Model 4815A RF Vector Impedance Meter Figure 1 1 is a general purpose self contained in strument for measuring complex impedance in a wide variety of laboratory applications as well as produc tion testing of circuits and components The fre quency range is 0 5 to 108 MHz impedance magni tude is measured in 9 ranges from 10 2 to 100 RA full scale and phase angle between 0 and 360 is indicated on two ranges 1 3 Impedance measurement is made at the tip of a probe that is at the end of a 5 ft cable with rf test signal and measuring circuits brought close to the probe tip to reduce residual impedances 14 An internal rf oscillator 0 5 to 108 MHz supplies a test signal to the unknown impedance 12 6 pa on the 10 ohm range and 4 pa on all other ranges Provision is made for using an external rf source particularly useful when measuring quartz crystals and other high Q devices 1 5 D
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6. E OPERATING AND SERVICE MANUAL MODEL 4815A RF VECTOR IMPEDANCE METER SERIALS PREFIXED 631 1966 Hewlett Packard Company Copyright Rockaway New Jersey U S A Green Pond Road 04815 90011 Printed AUGUST 1966 Section I Tables 1 1 1 2 Table 1 1 FREQUENCY Range 500 kHz to 108 MHz in five bands 500 kHz to 1 5 MHz 1 5 to 4 5 MHz 4 5 to 14 MHz 14 to 35 MHz 35 to 108 MHz Accuracy 2 of reading 1 of reading at 1 592 and 15 92 MHz RF monitor output 150 mV minimum into 50 ohms IMPEDANCE MAGNITUDE MEASUREMENT Range 1 ohm to 100K ohms full scale ranges 10 30 100 300 1K 3K 10K 30K 100K ohms f DECHE Accuracy 4 of full scale 30 MHz 25K of reading where f frequency in MHz and Z in ohms reading includes probe residual impe dance Calibration linear meter scale with increments 2 of full scale PHASE ANGLE MEASUREMENT o Range 0 to 360 in two ranges 0 90 180 90 f Z Accuracy 3 30 MHz 25 KQ degrees where f frequency in MHz and Z is in ohms Calibration increments of 2 Adjustments front panel screwdriver adjustments for Magnitude and Phase Zero Model 4815A Specifications RECORDER OUTPUTS Frequency 0 to 1 volt from 0 to 1K ohm source proportional to dial rotation Impedance magnitude 0 to 1 volt from 1K ohm source Phase angle 0 0 9 volt from 1K ohm source ACCESSORIES FURNISHED 1
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8. available under accessory number 10210A 1 13 COMPONENT MOUNTING ADAPTER This adapter allows many types of components to be mea sured with minimum addition of residual impedance to affect measurements and is separately available as accessory number 00601A 1 14 PROBE GROUND ASSEMBLY is a grounding device that may be positioned at a convenient point on the probe barrel A spring loaded pin makes ground contact This accessory is available as hp Stock No 187B 21A 8 1 15 PROBE CENTER PINS Six additional center pins are supplied against possible damage or loss The small diameter end of the center pin is inserted into the mating jack in the probe tip 00601A Component Mounting Adapter ai 187B 21A 8 Probe Ground Assembly Model 4815A 1 16 PROBE HOLDER This accessory clips onto the front handle of the 4815A to hold the probe when not in use and is available separately as hp Stock No 5040 0404 1 17 ACCESSORIES AVAILABLE 1 18 SHIELDED BANANA PLUGS TO FEMALE BNC This adapter converts banana post inputs to shielded BNC and is available as accessory 10111A The adapter has approximately 10 pF shunt capacity 1 19 INSTRUMENT IDENTIFICATION 1 20 Each Model 4815A is identified by an eight digit 000 00000 serial number on the rear panel The five digit number is an identification number unique to each instrument and the three digit number is a serial prefix number used to document changes 1 21
9. e voltages proportional to magnitude phase and frequency are available at the rear panel for recording equipment 1 6 Complete specifications are given in Table 1 1 1 7 Additional information on the Model 4815A is given in Table 1 2 The characteristics are general design parameters that are useful in the application of the Impedance Meter 1 8 ACCESSORIES FURNISHED 1 9 Accessory kit number 00600A is supplied with the 4815A The kit consists of adapters for probe to BNC and Type N connectors a probe socket for use on circuit boards a component mounting adapter probe holder probe ground assembly and center pins The probe accessories are described in detail in Par agraphs 1 9 to 1 16 and shown in Figure 1 1 and 1 2 Also supplied is a rack mounting kit with hardware hp Stock No 5060 0776 and a circuit board exten der for servicing Figure 1 1 Model 4815A RF Vector Impedance Meter with 00600A Probe Accessory Kit Section I Paragraphs 1 10 to 1 21 1 10 PROBE ADAPTER This adapter converts the probe tip to a male type N connector and is avail able under accessory number 102064 1 11 PROBE TO BNC ADAPTER With the use of the 10206A acdessory this adapter converts the probe tip to a male BNC connector and is available under accessory number 10207A 1 12 PROBE SOCKET This socket supports the probe and guides the center pin to the test point An excellent ground return is obtained with the socket which is
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