CHECK OUT THE WIKI The purpose of the wiki is mainly to allow you to find information on instruments, either from either
- The model number
- The function(s) listed below. Some instruments have multiple functions - for example, the 4195A is a VNA, spectrum analyzer and an impedance analyzer. Therefore the 4195A is listed in multiple categories
Please also check out HPWiki available here:
- Accessory kits - various types
- AC power analyzers - PA2201A and PA2203A
- AC power supplies 6811C, 6812C, 6813C
- Airlines
- Arbitrary waveform generators M8194A
- Amplifiers?493A, 495A?
- Attenuators (optical) 8156A, 8157A, 8158B, 81566A, 81576A,?
- Attenuators (RF) 8494A
- Attenuator set (500 ¦¸) 350C
- Attenuator set (600 ¦¸) 350D
- Attenuator switch driver
- Audio analyzers? 8903A, 8903B, 8903E,? ?
- Base station test sets
- Bit error rate testers (BERTs)
- Cables
- Capacitance meters U1701A, U1701B, 4272A, 4278A, 4279A
- Capacitor Bridge 4270A,
- Capacitor standards 16380A, 16380C,?
- Carrier noise test setsi
- Cesium frequency standards
- Clamp ammeters
- Close field probes
- Crystal Impedance E4915A, E4916A
- Data Acquisition Systems (DAQs)
- DC power analyzers
- DC power supplies 6030A , 6031A , 6032A, 6033A, 6035A, 6131C, 6621A, 6622A, 6623A, 6624A, 6627A, 6255A, 6645A, 6671A, 6672A, 6673A, 6674A, 6675A, 62003A, 62003C, 62003E, 62004A, 62004B, 62004E, 62005A, 62005B, 62005E, 62006A, 62006B, 62006E, 62010A, 62010C, 62010E, 62012A, 62012C, 62012E, 62015A, 62015C, 62015E, 62018A, 62018C, 62018E, 62024A, 62024C, 62024E, 62028A, 62028C, 62028E, 62048A, 62048C, 62048E
- Delay lines
- Detectors
- Device current waveform analyzers
- Digital communications analyzers
- Directional couplers
- Distortion analyzers 330B, 330C, 330D, 331A, 332A, 333A, 334A, 339A, 8903A, 8903B, 8903E,???
- Dynamic measurement DC source
- Electrometers
- Fading simulators
- Femto ammeters
- Filters
- Frequency counters 522B, 5342A 5343A 5352B
- Frequency standards?
- Function Generators ? 3310A,? 8165A,
- GPIB controllers, extenders, cables etc.
- GPS frequency standards
- Harmonic mixers
- High resistance meters 4339B
- High resistance meter fixtures 16008B
- HEV EV Grid Emulators and Test Systems
- In-circuit test systems
- Impedance analyzers 4195A, 4291A, 4291B, 4395A, 4396A, 4396B, 4294A, E4990A, E4991A
- Impedance Analyzer Accessories
- Impedance / Gain Phase analyzer 4194A
- Impedance Meter 4193A,
- Isolators
- LCR meters? U1701A, U1701B, U1731A,? U1731B, U1731C, U1732A, U1732B, U1732C, U1733C, 4191A , 4192A, 4194A, 4195A, E4196A,? 4216A, 4260A, 4261A, 4262A? 4263A, 4263B, 4271B, 4274A, 4275A, 4276A , 4277A, 4284A, 4285A, 4286A, 4287A, 4291A, 4291B, 4294A, 4332A, 4342A, 4395A, 4396A, 4396B, E4980A and E4980AL
- LCR meter calibration devices? 16380A 42030A? 42090A, 42091A and 42100A
- LCR meter accessories
- 2-Terminal BNCs.
- 4-Terminal Pair (BNC connectors)
- Cable extension 16048A, 16048D, 16048E, 16048G, 16048H
- DC current bias accessories 42841A, 42842A, 42842B, 42842C, 42843A
- DC voltage bias accessories 16065A, 16065C,
- Kelvin clips 16089A, 16089B, 16089C,16089E
- Lead Components 16047A,16047B, 16047D, 16047E
- Material 16451B, 16452A
- Probes 42941A
- SMD 16034E, 16034G, 16034H
- 2-port 16096A
- 7 mm (APC7)
- 2-Terminal BNCs.
- LCZ meters? 4276A, 4277A,
- Lightwave clock / data receivers
- Lightwave converter
- Lightwave component analyzer
- Lightwave measurement system mainframes
- Lightwave polarization analyzers 8509B
- Logic analyzers
- Nemo wireless network solutions.
- Noise and interference test set
- Noise figure analyzers
- Noise sources 346A, 346B. 346C ,
- Matching pads (50 ohm to 75 ohm or similar)
- Materials test equipment
- Microwave repeaters
- Microwave downconverters 70427A
- Microwave / THz sources
- Milliammeter 428B
- Milliohm meter
- Mobile communications DC source
- Modular instruments
- AXIe
- Data acquisition (DAQ)
- USB
- PXIe
- Modulation analyzers
- Multimeters 427A, 970A
- Optical attenuators
- Optical heads
- Optical sources
- Optical spectrum analyzers
- Oscilloscopes 120A, 120AR, 120B, 122A, 130A, 130B, 130BR, 130C, 140A, 140B, 141A, 150A, 150AR, 160B, 180A, 180AR, 180CD, 181A, 181AR, 181T, 181TR, 182C, 182T, 183A, 183B, 184A, 184B, 185A, 185B, 1200A, 1200B, 1220A, 1221A, 1703A, 1707A, 1707B, 1710A, 1710B, 1715A, 1722A, 1725A, 1726A, 1740A, 1741A, 1742A, 1743A, 1744A, 1746A, 1980A, 1980B, 5403A, 6000A, 6000L, 16533A, 16534A, 54100A, 5410B, 54100C, 5100D, 54111D, 54120A, 54120B, 54200A, 54501A, 54502A, 54503A, 54504A, 54520A, 54520C, 54540A, 54540C, 54542A, 54542C, 54600B, 54601A, 54601B, 54602B, 54603B,? 54645A, 54654N, 54710A, 54720A, 54750A, 54825N, E1428,?
- Oven controlled crystal oscillators (OCXOs)
- Pattern generators
- PCM terminal test set
- Phase noise measurement
- Pico ammeters
- Printers 2225
- Plotters 7470A, 7475A?
- Probes
- Protocol analyzers and exercisers.
- Power booster test sets
- Power meters 431A, 431B, 431C, 432A, 435A, 435B, 437B, 438A
- Power splitters
- Power supplies
- Pulse generators
- Q-meters 4342A?
- Q-meter calibration inductors 16470A
- Reflection transmission test set
- Return loss module (optical)
- Relays / switches / switch matrices (optical)
- Relays / switches / switch matrices (RF)
- Resistor standards 42030A?and 42100A
- S-parameter test sets
- Scalar network analyzers
- SCSI bus preprocessor interface E2324A
- Selective level meters 3746A
- Semiconductors
- Semiconductor parameter analyzers 4145A, 4155B, 4156B,
- Signal analyzers
- Signal generators / sweep generators / signal sources / oscillators 200CD, 201B, 209A, 204D,? 608A,? 8165A
- Software
- Source measure units
- Spectrum analyzers 4195A,???
- Switch control units
- SWR meter 415E?
- Time interval? counters
- Time mark generator 226A
- Timing and data state modules
- Torque wrenches
- Transmitter testers
- Trigger modules
- Ultrasound transducers
- Universal bridge? 4260A, 4265A, 4265B?
- Vacuum tube voltmeter 410C
- Vector Impedance Meter 4193A, 4800A, 4815A
- Vector Network Analyzers (VNAs) 4195A,? 8510A, 8510B, 8510C, 8753A, 8753B, 8753C, 8753D, 8753E, 8753ES, 8752ET, 8719A, 8719B, 8719C, 8719D, 8720A, 8720B, 8720C, 8720D, 8720ES, 8722A, 8722B, 8722C, 8722D, 8722ES,
- Vector Network Analyzers (VNA) calibration kits 85032B, 85032E, 85033C, 85033D, 85033E, 85050B, 85050C, 85050D, 85052B, 85052C, 85052D, 85054A, 85054B, 85054D, 85056A
- Vector Network Analyzer (VNA) verification kits
- Vector Signal Analyzer 89650S, 89600S
- Vector voltmeters 8405A, 8508A,
- VXI mainframes 70000B, 70000C
- Waveform and function generators
- Waveguide to waveguide and waveguide to coaxial transitions.
- Wireless 58 OTA chambers
- Wireless channel emulators
- Wireless network emulators
- Wireless communication test sets
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Re: Need help with HP 441A Power Meter not turning off (or sometimes not turning on)
HI Victor, From what I can see, the problem seems to be contamination on the contact surface.? The bad sections are darker than the good ones. I don't know if this is someone spilling their coffee on
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Tom B
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#98091
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Re: Need help with HP 441A Power Meter not turning off (or sometimes not turning on)
HI Dave, Thank you.? I have another one of these to fix.? Where I have the most trouble is getting the front panel separated from the chassis.?? I have the same problem with the 34401A.??
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Tom B
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#98090
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Re: Need help with HP 441A Power Meter not turning off (or sometimes not turning on)
Update, armed with the schematics (which dont apply 100% to this model, but are close) I was able to trace out the whole power push button circuit. I can definitely say that the problem is that the
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victor smith
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#98089
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Re: [test-equip-trader] more TE purging
I'm interested in the 4284A/4285A LCR meter pair, but have a few questions. What options and fixtures are included? What was the test procedure? Does your asking price include shipping in CONUS? Will
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Reginald Beardsley
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#98088
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Re: Need help with HP 441A Power Meter not turning off (or sometimes not turning on)
Yes, Dave, Please provide that info, it would be of great interest! Tom, I guess the fact that you were able to find a replacement panel means that you never found the actual cause of the switch
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victor smith
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#98087
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Re: Need help with HP 441A Power Meter not turning off (or sometimes not turning on)
OK Tom, I'll work up a little word document today and post it with some photos. Dave W6TE
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Dave Smith
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#98086
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Re: Need help with HP 441A Power Meter not turning off (or sometimes not turning on)
Hi Dave, If there is an easy way to take the front panel apart I would like hear about it. I have found it to be a real pain. Please send me your instructions. Tom Bryan
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Tom B
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#98085
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Re: Need help with HP 441A Power Meter not turning off (or sometimes not turning on)
Victor, The front panel¡¯s on those meters are very easy to take apart and re-assemble. It only takes a few minutes. I do it almost every day as I work on these meters. If you need a step by step
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Dave Smith
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#98084
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Re: Need help with HP 441A Power Meter not turning off (or sometimes not turning on)
and finally, thanks, Tom, for that link, which turns out to be the set of schematics I have been begging for!
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victor smith
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#98083
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Re: Need help with HP 441A Power Meter not turning off (or sometimes not turning on)
Tom, Thank you so much. You have confirmed what my own investigation led me to suspect. Long Story Short: I did take off the front panel (always fraught with ways that things can go wrong, I always
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victor smith
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#98082
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Re: Need help with HP 441A Power Meter not turning off (or sometimes not turning on)
Victor, I just went through the same thing with one of these. It looked like the Schmitt trigger should be working but it wasn't. The EPM series power meters do not use carbon button switches. It uses
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Tom B
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#98081
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Re: So far O.T. it's in another universe but...
I use a pump hairspray bottle and old toothbrush. Less risk of damage to 0.25 mm wide PCB traces which was where the flux was on the CD player. After it looks clean with a 7x Hastings triplet, I spray
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Reginald Beardsley
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#98080
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Re: Need help with HP 441A Power Meter not turning off (or sometimes not turning on)
Oh, and Thank you to Tom, sorry, I missed that you were the respondee!
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victor smith
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#98079
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Re: Need help with HP 441A Power Meter not turning off (or sometimes not turning on)
Peter, thank you. The battery seems to be fine, over three volts. And besides: I made some progress on this thing. Knowing that I was looking for a logic shift whenever the power button was pushed, I
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victor smith
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#98078
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Re: Testing a 2-01C Diode
Vacuum tube diodes have a space region between the cathode and anode, which limits the current that can flow until the voltage between the two is high enough. See the I-V characteristic curve at the
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John Kolb
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#98077
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Re: [test-equip-trader] more TE purging
I think there are builders in ham radio still, but many build because they can't afford commercial gear. That also means very limited TE. There are items on that list I wish I could buy too. Paul
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N1BUG
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#98076
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Re: Need help with HP 441A Power Meter not turning off (or sometimes not turning on)
Check the battery to make sure it is good.? If it is good, try removing the battery jumper and then try to turn it off.?? The membrane keyboard is a weak point of these power meters.? I found
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Tom B
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#98075
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Re: Need help with HP 441A Power Meter not turning off (or sometimes not turning on)
Too bad! I wonder if there is a hidden menu or only settable over GPIB. Seems more likely a fault of some sort though. I have one of these so if it gets to the point of internal measurements I can
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Peter Gottlieb
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#98074
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Re: Need help with HP 441A Power Meter not turning off (or sometimes not turning on)
Peter, good idea! But no, I looked and don't see any mention of power on options in the configuration menus. That is how it acts, though, and these were used in an untended system rack type of
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victor smith
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#98073
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Re: HP8165A and HP8620A - repairing HAMfest acquisitions
Pete, You should have bought more of my stuff! Best Regards, Bob Groschen Monument, CO Sent: Monday, July 29, 2019 2:05 PM To: [email protected] Subject: Re:
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Bob Groschen
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#98072
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