HP 5501B Service manual

The HP-5501B is functionally similar to the 5501A but uses a different HeNe laser tube with thermal instead of PZT tuning, and thus different electronics. The tube is similar to the one in the HP-5517A (below) and other later model HP/Agilent lasers.

HP 175A Service Manual

The @ Stock No. 175A-95A Modification Kit, whenadded to the @ Model 175A Oscilloscope, providesthe sweep and gate voltages at the rear panel of theinstrument. These outputs may be used to sweep orsynchronize external equipment or circuits with theoscilloscope.The SWEEP OUTPUT voltage provided is approximately5 volts in amplitude and is centered about0 volts. The GATE OUTPUT voltage is approximately4 volts in amplitude and is riding a -2.5 volt level.The Modification Kit is complete with all necessarycomponents, wire, and hardware. You can install thekit with simple hand tools. Holes for mounting thefew components are already provided in the instruments.

HP 150A-AR Service manual

Operating And Servicing Manual For Model 150A/AR

High Frequency Oscilloscope Serial 40 Through 3198

HP 185B Service manual

HP 185B - The Kilomegacycle Sampling Oscilloscope

1960 - The First Sampling Oscilloscope
As described in the first period of this Quick Tour, one could says that oscilloscopes at HP were not an immediately successful product line. In the HP Way, making a contribution was an important concern when designing a new instrument. The 185A was the first HP oscilloscope to make a contribution to the waveform measurement limit of the time.

Just two years later, the HP 185B was introduced in the March 1962 issue of the Hewlett Packard Journal.
The 185B mainframe with the 187B drawer combination, extended the equivalent bandwidth of the previous model HP 185A to the Gigahertz region. Thus giving the Journal the opportunity to title its article with the nickname "The Kilomegacycle Sampling Oscilloscope".
Brief specifications of the 185B when used with the 187B Dual trace Amplifier were: DC to 1000 mc passband with a rise time of less than 0.4 nanosec. Sensitivity from 10 mv/cm to 200 mv/cm in 1, 2, 5 sequence. Input impedance 100 K shunted by 2 pf, nominal.

HP 3720A Service Manual

The new HP 3720A Spectrum Display is designedto provide frequency-domaind isplayso f datam easuredusing the HP 3721,A Correlator as a timedomainsignal analyzer. The Spectrum Display performsthe discrete Fourier transform of the Correlatordisplay and presents the result on its ownstorage cathode-ray tube. Axes can be Cartesianor polar, linear or logarithmic. The user can observepower spectra, Bode diagrams, Nyquist diagrams,and many other displays, changing from one to anothersimply by changing the settings of front-panelswitches.Together the Spectrum Display and the Correlator(Fig.1 ) constitutea versatilep, ortable,lo w-costanalysis system for signals in the range dc to 250kHz.

SERVICE MANUAL CONTENT

Section I contains General Servicing Instructions and a Description of Controlsand Indicators.

Section II gives information on Parts Identification, Maintenance and RepairProcedu res.

Section III contains a list of Replaceable Parts for the 3720A.

Section IV gives the 3721A/3720A System Troubleshooting Procedure.

Section V contains the Functional Diagram, Assembly Location Diagrams andAssembly Packages including Schematic and Component Location.

HP 686A Service manual

RF Sig Gen Swept 8.2 to 12.4 GHz

HP-78100A 78101A Service Manual

TRANSMITTER SERIALS PREFIXED: 1549ARECEIVER SERIALS PREFIXED: 2220AThis manual applies directly to HP Model 78100ATelemetry Transmitters with serial numbers prefNed1549A, and HP Model 78101A Telemetry Receivers withserial numbers prefuted 2220A.OTHER PREFIXES:For serial numbers prefixed lower than 1549A and 2220A,see Appendix I. For serial numbers prefuted higher than1549A and 2220A, see Manual Changes insert includedwith this manual.

HP 683C Service manual

RF Sig Gen Swept 2-4 GHz

SPECIFICATIONS

FREQUENCY RANGE:SWEEP RANGE:RF SWEEP RATEOF CHANGE:SWEEP TIME:POWER OUTPUT:POWER VARIATION:RESIDUAL FM:SPURIOUS SIGNAL:MAXIMUM SWR:OUTPUT CONNECTOR:SWEEP MODE:SWEEP OUTPUT:SWEEP WIDTH:FREQUENCYDIAL ACCURACY:RESIDUAL AM:MODULATION:POWER:DIMENSIONS:WEIGHT:2 to 4 kmc (gc)2.1 mc to 2.1 kmc (gc) in 7 steps. Continuous control between steps.16 mc/sec to 160 kmc (gc)/sec in 9 steps0.0135 sec to 135 sec for full band sweep; determined by sweep range and rate.Adjustable; 0 to at least 30 mw into 50-ohm loadWith leveler operating: less than f 1.5 db over entire frequency range. Withleveler off: less than & 3 db over entire frequency range.Less than 100 kc peakAt least 20 db below cw output2.5 or lessType N femaleRecurrent; externally triggered (20 volts positive with better than 3 volts/psecrate of rise); manually triggered. RF Frequency sweep is linear with respectto time and is downward from frequency dial setting.+25 volt (approximately) peak sawtooth provided concurrently with swept rfoutput for recorder and oscilloscope sweep. Source impedance 10,000 ohmsand 20 pf in parallel.Accuracy: 10% for full band sweep.greater for other calibrated sweep widths.Linearity: The half-voltage point of the SWEEP OUTPUT occurs within 5%of mid-frequency..+25%, -15% or & 3 mc, whichever is1%Greater than 40 db below carrier amplitudeInternal AM: Square wave modulation continuously adjustable from 400 to1200 cps. Peak rf output power is within 1 db of the cw level.External AM: Direct coupled dc to 300 kc/sec; -20 volts or more reduces rfoutput level from rated cw output to zero. Input impedance: 750K ohms and25 pf (approximately) in parallel.External FM: Approximately 150 volts peak-to-peak required to modulate fullfrequency range, 10 cps to 60 cps, Frequency deviation and modulating voltagemust be decreased with modulating frequencies higher than 60 cps. Inputimpedance; 43K ohms and 100 pf (approximately) in parallel; ac coupled.External Pulse: + 10 volts or greater pulse required: 5 millisecond maximumpulse length. Peak rf pulse level within 1 db of cw level. Pulse rise anddecay times less than 1 psec. Input impedance: 390K ohms and 25 pf(approximately) in parallel; ac coupl6d.115 o r 230 volts f lvo5,0 to 60 cps approximately 540 wattsCabinet Mount: 20-9/16 inches wide, 12-3/4 inches high, 18 inches deepRack Mount: 17-5/8inches wide, 10-1/8 inches high, 16-5/8 inches deepCabinet Mount: Net 105 lbs, shipping 134 lbsRack Mount: Net 105 lbs, shipping 134 lbs

HP 618B Service manual

UHF SIGNAL GENERATOR

SPECIFICATION

SFrequency Range:Calibration:Frequency Stability:Output Range:Output Accuracy:Internal Impedance:Modulation:Internal Pulse Modulation:Sync Out Signals:External Synchronization:InternalSquare Wave Modulation:Internal Frequency Modulation:External Pulse Modulation:Sxternal Frequency Modulation:Power Source:Size:Weight:Accessories Supplied:3,800 to 7,600 mc covered in a single band. Repeller voltageautomatically tracked and proper mode automatically selected.Direct reading. Frequency calibration accuracy better than il%.Frequency variation less than 0.006% per degree centigradechange in ambient temperature: line voltage change of *lo%causes less than .02% frequency change.1 milliwatt or 0.223 volt to 0.1 microvolt (0 dbm to -127 dbm)into 50 ohms. Directly calibrated in microvolts and db.Coaxial Type N connector.Within i t 2 db from - 7 dbm to -127 dbm, at the end of 6 ft.output cable, terminated in 50-ohm load.50 ohms nominal. (VSWR less than 2 )Internal or external pulse, fm and square wave.Repetition rate variable from 40 to 4000 pps, pulse width variable1/2 to 10 microseconds.1) Simultaneous with rf pulse - positive.2) In advance of rf pulse - positive, variable 3 to 300 microseconds.(Better than 1 microsecond rise time and 25 to100 volts amplitude into 100 ohms load.)1) Sine wave: 40 to 4000 cps, amplitude 5 to 50 volts rms.2) Pulse signals: Zero to 4000 pps and 5 to 50 volts amplitude,both positive and negative, pulse width 0.5 to 5 microseconds,rise time 0.1 to 1 microsecond.Variable 40 to 4000 GPS, controlled by “pulse rate” control.Saw-tooth sweep rate adjustable 40 to 4000 cps. Frequencydeviation up to i 3 mc.Pulse requirements:negative, width 0.5 to 2500 microseconds.amplitude from 15 to 70 volts positive orProvides capacitive coupling to repeller of klystron. Maximumdeviation approximately i5 mc.115/230 volts *lo%5, 0 to 60 cps, 250 watts.Cabinet Mount: 17-1/2 in. wide, 14 in. high, 19-1/2 in. deep.Rack Mount: 19 in. wide, 14 in. high, 17 in. deep behind panel.Cabinet Mount: Net 95 lbs., shipping 118 Ibs.Rack Mount: Net 96 lbs., shipping 119 lbs.AC-16Q Cable Assembly, 6 feet of specially treated RG9A/U50 ohms coaxial cable terminated at each end with UG-21B/UType N male connectors. Each cable is tested and selected forminimum s w r at frequencies above 4000mc.