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 Ω) 350C
- Attenuator set (600 Ω) 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: Adding Display Backlights
That looks awesome!
By
Peter Gottlieb
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#150509
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Re: HP 54512B (pair) repair
Peter,
Fortunately, the PS troubleshooting section (p.6-21) has some good
directions on how to check the PS once detached from the modules it
supplies. It involves loading only the 5.2V output (with a
By
Radu Bogdan Dicher
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#150508
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Re: HP 54512B (pair) repair
You are seeing the tabs which are spot welded to the cell, it's not a socket, the cell is soldered to the board.? Well you might be able to pry but risk damage to the board or traces.? At this point
By
Peter Gottlieb
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#150507
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Re: HP 54512B (pair) repair
Radu,
I have no personal knowledge of the this battery replacement, however my best guess would be a CR2032, or CR2025 type. The coin/button cells of this type seem to be 3V lithium. If you cannot
By
Don Bitters
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#150506
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Re: HP 54512B (pair) repair
Yeah, sort of permanent tabs! I accidentally bought 50 of the Murata tabbed CR2032s and just yanked the spot-welded tabs off with pliers. They will come off if you pull hard enough. Best to order
By
Jim Ford
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#150505
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Re: HP 54512B (pair) repair
To finish that thought, in terms of chemistry of type of battery, if I have
more leeway in what I choose, what would be some recommendations on the
chemistry of the battery?
R?zvan - thanks a bunch
By
Radu Bogdan Dicher
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#150504
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Re: HP 54512B (pair) repair
Peter,
No, but I am aware of that (though, really good point!). I assume the
batteries are depleted. I also assume all they're holding is the
calibration data, and the actual instrument software is
By
Radu Bogdan Dicher
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#150503
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Re: HP 54512B (pair) repair
Has anyone mentioned to watch out for grounded soldering iron tips when doing this (if the cell is not discharged or memory contents need to be kept alive using an external PSU)
Peter
By
Peter Brown
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#150502
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Re: HP 54512B (pair) repair
Hi Radu,
I would say that battery is a CR2430 or a BR2430 looking at the size
compared the ICs around.
I replaced it also in my 8970B but there I had a holder.
I had a few days ago an issue with my
By
Razvan Popescu
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#150501
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Re: HP 54512B (pair) repair
Thanks, Gabor. That makes sense and I don't think it'd be so bad even in
the long term. I'd personally do it in a way where this can be serviced
again (in 10 years or... 25!), and a socket would
By
Radu Bogdan Dicher
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#150500
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Re: HP 54512B (pair) repair
Thank you, Steve.
One other unfortunate effect of the spot-welding of the top tab is that the
battery code is not visible. I can probably destroy the battery once out,
and read the CRxyzt battery
By
Radu Bogdan Dicher
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#150499
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Re: HP 54512B (pair) repair
I'm a bit ashamed to admit that in such a case, I'd probably hot glue a
battery holder that I already have in place of the original and connect its
leads with a pair of short wires to the pads. If
By
Gabor Szucs
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#150498
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Re: HP 54512B (pair) repair
When you get to the bottom side of the PCB, I'm pretty sure you'll find three "leads" sticking thru. Two go to the top side of the cell, and one to the underside. You'll need to carefully desolder all
By
Steve Hendrix
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#150497
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Re: HP 54512B (pair) repair
Awesome. Thank you guys! I only did just about enough prying to figure this
mustn't be the right way to remove, then asked here. It sounds like it's
not a ten minute deal and needs weekend time to
By
Radu Bogdan Dicher
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#150496
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Re: HP 54512B (pair) repair
Stop prying! I've used that type battery many times. The tab on top is spot-welded to the cell, with two fingers soldered thru the PCB. underneath is another, smaller tab, with a single finger
By
Steve Hendrix
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#150495
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Re: HP 54512B (pair) repair
Just my 2 cents worth, I think that battery is soldered in and the tags/clips are spot welded on to it. You’ll probably need to remove the board assembly to successfully remove it.
I think any more
By
nigel adams
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#150494
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Re: HP 54512B (pair) repair
The triangular tab is spot welded to the coin cell and then the legs of the
tab are in turn soldered to the board next to the resistor. A great way to
force the repair technician to completely
By
Gabor Szucs
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#150493
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Re: HP 8660B/86602B developed output stability problem, getting-started suggestion(s) request
Peter,
Thank you!
DaveD
KC0WJN
[email protected]> wrote:
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Dave Daniel
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#150492
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Re: HP 54512B (pair) repair
One can see a lot of scratches on top of that - I think someone before me
tried replacing this with limited success.
<vondicher@...> wrote:
By
Radu Bogdan Dicher
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#150491
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Re: HP 54512B (pair) repair
I lifted today the CRT card, just enough to have some access to the
battery, but I'm still unsure how it's supposed to come off. I tried prying
the top spring "leaf," but it seems attached (possibly
By
Radu Bogdan Dicher
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#150490
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