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: mailing lists, was Re: [HP-Agilent-Keysight-equipment] Trying to go through alignment procedure for HP412A that I rebuilt, having trouble with first step lol
On Sun, 1 Dec 2024 at 02:51, Dave McGuire via <mcguire=[email protected]> wrote: On 11/30/24 21:27, Dan via wrote: True.?
Groups.io offers FAR more functionality than a mailing list. A mailing list doesn¡¯t offer 30 GB of file storage, a wiki, and a whole host of other features that the group has. Not all features are enabled on this group, as they would serve no useful purpose.? ? ?Many people feel that web forums are the "new" way and mailing lists It¡¯s your personal preference whether you use the other features, but they exist and other people do use them. I feel that they should be encouraged to use them.? Dave? (Group owner)? |
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8350A + 83525A mechanical issues
Hello
In the last months I've been playing with a HP 8350A + 83525A that probably had a uncontrolled impact with something. After replacing a 7426 on CPU board and rebuilding most of the B.West springs with stuff found on taobao, I'm left with mechanical issues. ?Given my noob level I would really appreciate feedback and suggestions from experts.
?
The first issue is the plastic lever that operates the power switch (image 1). It broke where the metal pin enters. Glue doesn't seem to be an answer; a 3D printer would probably be the best solution but given the cost I'll just continue plug/unplug the cable.
?
Second issue is probably even more complicated. The N connector of the plug in hit something hard and broke the metal fitting inside (image 2). Sorry for the lousy image but haven't decided to take it apart yet given my experience with the reset button of my 5328A (story for another time). This is part of the plug in frame so replacing it means a new plugin very €€€€. Ideas?
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Last question is about adjustments. The last adjustment in the manual is Marker DAC. Although setting the trigger level is quite tricky (seems easier with a scope) the reading I have is indeed 500 and in some moments 400 however full rotations of A4R28 make no differences. This does not sound very good, but more than adequate for hobbyist use
?
Thanks in advance for any suggestions for and recommendations
?
cheers
?
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Re: VNA Resonance Methodology
jmr,
I appreciate the offer, but it won't be necessary, thanks all the same. Now I know where I went wrong the dip is readily visible. I just need to take more care with my coil-winding technique in future!
Thanks to all who chipped in with suggestions in this thread; much appreciated. |
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mailing lists, was Re: [HP-Agilent-Keysight-equipment] Trying to go through alignment procedure for HP412A that I rebuilt, having trouble with first step lol
On 11/30/24 21:27, Dan via groups.io wrote:
Okay, I really appreciate it Dave. ?So what¡¯s the difference really? Do they kind of function the same, but each message and response puts an email in your email account?Yes, pretty much. The first thing to remember is that mailing lists have nothing at all to do with the web, web servers, web sites, or web browsers. It's an email address that you send an email to (by whatever means you access your email), and then that email is re-sent automatically to all the people subscribed to (registered to be recipients of) the mailing list. Groups.io is a commercial vendor of mailing list services. They provide a web interface for list administrators to manage their lists, as well as for people to view archives of past list traffic. In recent years that functionality has been (inadvisably, IMO) extended to include posting messages to the mailing list from the web interface as well. This has blurred the line between mailing lists and web forums, and has resulted in a whole lot of confusion. The primary usage of this and other "groups" is via email, though some people who want to pretend it's a web forum can do so, and it's mostly good enough for that. (though I myself do not have the patience for it; I'm a very busy person) Many people feel that web forums are the "new" way and mailing lists are the "old" way, and while mailing lists are much older (dating back to the 1970s) the reality is that both formats are decades old and it really just boils down to personal preference. -Dave -- Dave McGuire, AK4HZ New Kensington, PA |
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Re: Trying to go through alignment procedure for HP412A that I rebuilt, having trouble with first step lol
it might actually be better to eliminate this one, I already have a couple responses on the other posting I have, and nothing here, except for you letting me know you saw that I had put two listings on. Thank you
Dan |
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Re: Alignment of HP 412A after rebuild, having trouble with the first step.
I really appreciate it Richard. ?Nothing wrong with the meter, can mechanically zero it no problem with the small adjustment screw. Once the mechanical zero is that the meter is pretty much Dead on with the different DC and AC voltages I fed into it. I was just explaining that when you adjust the home balance it does greatly affect the mechanical zero. So before I did, any alignment work, I set the mechanical zero which it really wasn¡¯t that far off at all. It is the measurements and it looked good. But I wanted to go through the alignment procedure, I did no problem on my 410B. ?Well that¡¯s when I read the first step to look at it on a scope and adjust for the lowest 10 Hz signal. I could pick up and that¡¯s when I saw it. Completely messed up my mechanical zero. Plus my scope was reading signals in the kHz. ? by adjusting the home balance I was able to get the scope read out to be in frequencies much lower, but nowhere near 10 Hz. ?
Dan |
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Re: Trying to go through alignment procedure for HP412A that I rebuilt, having trouble with first step lol
Okay, I really appreciate it Dave. ?So what¡¯s the difference really? Do they kind of function the same, but each message and response puts an email in your email account?
?
Thank you again,
Dan |
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Re: Trying to go through alignment procedure for HP412A that I rebuilt, having trouble with first step lol
On 11/30/24 18:04, Dan via groups.io wrote:
I apologize, I have a duplicate thread. I didn¡¯t realized the post had to be authorized before being posted. It can be deleted, use this thread for help.No problem. I saw the two messages in the moderator queue and it was pretty clear what happened, so I just put both through not knowing if you'd have a preference as to which one went. Keep in mind, though, that this is not a web forum, it is a mailing list that also has a web interface. -Dave -- Dave McGuire, AK4HZ New Kensington, PA |
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Alignment of HP 412A after rebuild, having trouble with the first step.
Hello all, I am finishing up on a restoration of a HP 412A VTVM. ?It¡¯s quite accurate from the get go after the restoration. ?
I replaced every capacitor minus ceramics, I replaced pretty much every carbon composite resistor with 1% metal film of good quality, installed nos tubes that tested quite strong. ?I¡¯m not sure if I¡¯m doing the hum balance correctly. ?
It says to connect a scope to the amplifier terminals which happen to be on the back of the meter and adjust for minimal 10 hz signal. ? I¡¯m not seeing any 10 hz, only seeing stuff in the kHz.
If I adjust the hum balance pot it does change the waveform seen and it does lower the frequency, but I get nowhere near 10 hz and the frequency is jumping all over the place. ?
?
I did also notice that the hum balance adjustment also affects the zero point of the meter fairly greatly. ?After playing around with it I had to zero the meter using the small screw directly below the meter face.
How do I do this correctly? When adjusting hum balance in a tube amplifier I would adjust for lowest noise/hum. Would adjusting for the lowest point where the needle sits on the meter work? Equating that the needle is higher due to noise, this is a total guess here. ? I¡¯m sure there are others that have aligned this meter so I¡¯m hoping for some help.
Thank you,
Dan |
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Trying to go through alignment procedure for HP412A that I rebuilt, having trouble with first step lol
Hello all, I am finishing up on a restoration of a HP 412A VTVM. ?It¡¯s quite accurate from the get go after the restoration. ?
?
I replaced every capacitor minus ceramics, I replaced pretty much every carbon composite resistor with 1% metal film of good quality, installed nos tubes that tested quite strong. ?I¡¯m not sure if I¡¯m doing the hum balance correctly. ?
It says to connect a scope to the amplifier terminals which happen to be on the back of the meter and adjust for minimal 10 hz signal. ? I¡¯m not seeing any 10 hz, only seeing stuff in the kHz.
?
?
If I adjust the hum balance pot it does change the waveform seen and it does lower the frequency, but I get nowhere near 10 hz and the frequency is jumping all over the place. ?
I did also notice that the hum balance adjustment also affects the zero point of the meter fairly greatly. ?After playing around with it I had to zero the meter using the small screw directly below the meter face.
How do I do this correctly? When adjusting hum balance in a tube amplifier I would adjust for lowest noise/hum. Would adjusting for the lowest point where the needle sits on the meter work? Equating that the needle is higher due to noise, this is a total guess here. ? I¡¯m sure there are others that have aligned this meter so I¡¯m hoping for some help.
Thank you,
Dan |
Dr. David Kirkby, Kirkby Microwave Ltd
Jinxie
Dave McGuire
Dan