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: HP 8673D synthesized generator - need replace RF out connector - partial front panel removal suggestions
Decided "go for broke" --- gently lowered the unit onto the table in front of the shelving where it lives (and onto a piece of carpet material), turned it on it's side (3.5mm front panel connector towards bottom - a better choice would have been 3.5mm front panel connector towards top), and continued fastener removal (in many small labeled bags!)
Got to the point where the two halves are split, but not physically separated. There are numerous wires (towards the front only) connecting the two halves; only two are UT141-type semi-rigid line (RF to and from the lower unit, I believe.) There appears to be enough slack in the wires (except for the two UT141-type semi-rigid lines) to allow about 100mm of separation without unplugging or unsoldering wires (which represents most of the steps involved in separating the two units by service manual.) Getting to this stage required removing fasteners along the left and right sides that appeared likely to hold the front panel of the upper section in place, as well as fasteners along the sides that join the two halves. The (diagonal, right side) upper fastener at the front was partly obstructed by a U shaped aluminum section (about 5mm radius). I used small diagonal cutters to chew away some of that until I could remove the fastener. The material turns out to be part of the internal cover that isolates the two units, except for an open area near the center/front. I do not think my small cutting will cause problem. At this point, the front panel of the upper section would still not separate from the body. Along the back of the unit (between the two units) was a span of thin metal (like top and bottom covers, same type of finish, decorative style) with two screws; I removed that piece (exposing the gap between the two units at the rear), and with this, the two units began to move independently, so I focused back to the front panel separation. On the next step, I removed the decorative trim from the top of the upper front panel (thin screwdriver to pry away the plastic trim piece); under there were three more fasteners that I removed. Once these were removed, the front panel showed some more possibility of independent movement but still was stuck in position. At this point (with the rear mid-point cover removed and the two units beginning to move independently), I began separating the two units, but discovered that the two semi-rigid (UT141) hardlines connecting the two halves was preventing much movement. I removed the 3.5mm male connectors from the upper unit termination (one of the two switches alongside the output attenuator). This required temporarily removing one end of two of the local (terminating both ends between the two switches) UT141 hardlines so that I could get better access to one of the two top-to-bottom hardline connectors. Once both of those connectors were removed from their switches (on the top side; no attention to the bottom side of the two cables), I was able separate further the two units (requiring careful steps to navigate the two now-free male hardline connectors.) Although I took some pictures, I will consult the service manual during re-assembly because it is possible to reverse the two top-to-bottom UT141 hardlines. Once the two halves were separated enough to allow access to the bottom front of the upper section, I found no decorative trim, but three more fasteners of the same type, which I removed. I also saw several threaded (like machine screw end) visible along the same bottom front area, but fortunately these do not impede separation. At this point the front panel assembly can move freely (still constrained by numerous wires) from the upper unit body, maybe 50mm clearance possible for access to the failed connector through what would be the bottom and side of the unit nearest the connector. The attachment of the internal connector is a simple hex nut, like used on old style potentiometers. I believe (tomorrow, hopefully) I will be able replace the 3.5mm male connector from the front panel (remove both ends of the UT141 hardline connecting to the output attenuator. Two photos are attached, one of the partially separated units, and other close-up of the 3.5mm-type switch connectors that are temporarily removed. |
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Re: HP 8673D synthesized generator - need replace RF out connector - partial front panel removal suggestions
Hi Dave,
I own an 8673D and I'm very satisfied with this generator; it performs quite well. I was able to get it back in exchange for another working instrument, however, this 8673D was considered DEAD. After several repairs and... several weeks later, I was facing the same problem as you: separating the two stages to gain access to the 3.5mm connector I wanted to replace. Unfortunately, I wasn't able to separate them. Let's just say I didn't try too hard, but I still removed or freed all the cables and semi-rigid cables connecting them, and I couldn't find a way to separate the two front panels. I thought it was the central screws that were blocking everything. But according to the procedure you attached, it seems the central screws weren't involved in the disassembly. So, I don't know what was preventing the separation. All the metal support clips were removed. In my case, it was the external part of the 3.5mm connector that was slightly damaged. I had corrected the connector with an exacto, but it was by installing a 3.5mm connector extension that I resolved the problem. This 3.5mm connector came from a defective (non-repairable) module that fitted an 83480A. Since then, it has remained stable and meets specifications. If you ever find the correct procedure, I would be interested to know it. Yves |
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HP 8673D synthesized generator - need replace RF out connector - partial front panel removal suggestions
My adventure fixing up my workshop's RF gear brings me to the last repair, the heaviest unit (94 pounds, and I'm older now than when I put it in position!)
The HP 8673D synthesizer uses a 3.5mm male panel connector (used on some other HP units supporting K-band). On this 8673D, at some point someone glued (?) a SMA female-female adapter into the 3.5mm male connector, and subsequently the adapter was sheared off, leaving half it's corpse in the 3.5mm male connector. I tried holding a spare SMA jack in place with a copper pipe cap, however, the RF path is impaired enough with this scheme that return losses badly confuse the leveling loop (otherwise the unit appears to function without errors.) I have a replacement connector (08673-60040 is the HP part number) in hand. I have service manual in hand (likewise quite large/heavy). The procedure for replacing the (A4J1) connector isn't specifically called out, however, it appears the normal course of action is to remove the front panel assembly, gaining access to the back side of the connector. Removing the front panel, like most significant service procedures described in the service manual, begins by "separate the two units". I've attached photo of the relevant start of service sheet A pertaining to disassembly for front panel removal. My idea is this - the front panel (A4) may (hopefully) only need to be moved slightly forwards (enough to get access to the back side of the RF output connector.) It appears that removal of the four internal screws that hold the front panel casting to the top/bottom internal structure (runs the length of the left and right sides) would allow the front panel to be moved forward away from the body of the unit (I don't know if there is a screw along the bottom front of the top section rendering this idea moot). Although there are a number of connections (referring to service manual service sheet A), only one appears to be the semi-rigid output coax, and it can be removed from it's top connection (attenuator) easily (the cable cable would then come away with the front panel pulled forward.) So, looking for any comments, suggestions, observations (and of course can supply any additional images that might be helpful.) Dave |
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Switched attenuator issue
I've noticed excessive through attenuation with my HP attenuator set (8497K / 8494H).
The repeatability was out of spec. After switching there would be a difference of 0.1 to 0.2dB.
I tried IPA on the RF relay switch contacts with no effect. I was hesitant to try anything more aggressive but with little to loose I applied Deoxit Gold ... and it fixed the problem completely.
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The spec for through attenuation is 0.4dB + 0.09dB/GHz & 0.6dB + 0.09 dB/GHz. The repeatability is now much better than spec.
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(I'd already replaced the o-rings)
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Re: HP 5245L counting/gate problems
The 5300-series counters also have the advantage of portability if the battery pack “plug-on” is added.? Jeremy? N6WFO? On Sun, Mar 9, 2025 at 7:11?AM Tom Smith via <n5ama=[email protected]> wrote:
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vk2bea
Jeremy Nichols