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?
- Cesium frequency standards 5090A
- Off-air 60 kHz frequency standards
- Off-air 200 kHz frequency standards
- Off-air GPS frequency standards
- Quartz frequency standards 105A, 105B
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 Test Kit 41951A,?
- Test Fixture Adapter 16099A
- Test Fixture 16034G, 16034H, 16047A, 16191A, 16192A, 16193A, 16093B, 16194A, 16452A,
- Test Head 4291B
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.
  - 41900A, 41901A
- 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)
  - APC-7 Connector Repair Kit 11591A
  - Binding post 16093A, 16093B
  - DC voltage bias accessory 16200B,
  - Lead components 16092A
  - Material 16453A, 16454A
  - SMD? 16192A, 16194A, 16196A, 16196B, 16196C, 16196D, 16197A, 16198A
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

Re: Frequency References

#144946

Roy, with one difference... Time and volt nuts chase quantifiable metrics with measureable and definable absolute values using standardized nomenclature and accepted methodology. Audiophools measure nebulous metrics with values such as "warmth", "brightness", and my favorite, "presence", while throwing out the factual formulas and ideas like ohms law and human ear response because they love brand X better than Y. Also, in the audiophool world, quality is always directly proportional to the cost if the device. ?

Re: HP 3325

#144945

开云体育

The part numbers you found are assemblies, which probably means the transistors with the leads attached. The transistor part numbers are:

1853-0450 MJE371K (selected)

1854-0800 (not listed in the widely available cross reference)

1853-0453 TIP36A

1853- parts are PNP transistors?

1854- are NPN

Show quoted text

On Jun 20, 2024, at 15:03, Joe White <skinnershorse@...> wrote:

?These are from the power supply board of a 3325.? Per OSM they are p/n 03325-66901, 03325-66902, 03325-66903 (left to right), described as "XSTR ASSEMBLY".? The manufacturer is listed as HP.? I have not found the part numbers in any cross-reference lists and I have been unable to identify the parts by their markings.? Any help on identifying the parts and/or replacements is greatly appreciated.
--
Joe White
KW4YW
<3325 xstr.JPG>

Re: HP 3325

#144944

Hi Joe

HP part #

1853-0450 =?MJE371K (not sure)

1854-0800 -> can't find this number

1853-0453 = TIP36A

Best?

Hans

Den torsdag den 20. juni 2024 kl. 22.03.35 CEST skrev Joe White <skinnershorse@...>:

These are from the power supply board of a 3325.? Per OSM they are p/n 03325-66901, 03325-66902, 03325-66903 (left to right), described as "XSTR ASSEMBLY".? The manufacturer is listed as HP.? I have not found the part numbers in any cross-reference lists and I have been unable to identify the parts by their markings.? Any help on identifying the parts and/or replacements is greatly appreciated.
--
Joe White
KW4YW

HP 3325

#144943

3325 xstr.JPG

Re: Frequency References

#144942

I'll attach some block diagrams of the various setups when I get home tonight.? Can't draw stuff up in any reasonable amount of time on my phone here at work.? I'll show the 50 ohm 10 MHz distribution method we have at work, the method I use in my home lab, and the 75 ohm baseband analog video distribution method.? ? ?Jim

Show quoted text

On Thu, Jun 20, 2024 at 9:16 AM, Jinxie via groups.io
<paul666@...> wrote:

So having read all the replies so far - for which many thanks - is it the same reason that all the PLLs within my 8566B spectrum analyzer are not only locked themselves but inter-locked with each other as well? So to ensure everything's in phase with everything else?

Re: Frequency References

#144941

So having read all the replies so far - for which many thanks - is it the same reason that all the PLLs within my 8566B spectrum analyzer are not only locked themselves but inter-locked with each other as well? So to ensure everything's in phase with everything else?

Re: Agilent E7495A Firmware Above A.3.10

#144940

Good news! I'm glad it worked and I could help.

73!
Razvan

Show quoted text

On 20/06/2024 16:19, Charles Edmonds via groups.io wrote:
Hi Razvan

thank you, it worked OK.

I tried it first with a 2GB compact flash card but that didn't work so I
tried a 256MB card and it worked OK so presumably it does not recognise
such a large card.

Thanks again.

regards
Charles Edmonds VK3CLE
Mob: 0418309921
charles.edmonds@...

Re: Frequency References

#144939

Ed: The Leo B GPS (and most GPS/TCXO etc) have  Zo 50 Ohms. 
We have a stock of vintage BNC 2X, 4X, 6X 50 Ohm wideband splitters. 
These are used often for video , so perfect BW for 5..10 MHz. 
Running the GPS at max output, the losses in the splitters (use transformers) still give > 500 Mv at the loads. 

Our  setup: Leo B 10 MHz>>Mini Circuits 2X>>Mini Circuits 4X, 6x etc. 
We drive 6 to 10 devices: Counters, spec/network analyzers, scopes. 

Min-Circuits are good cost/availablilty. 
 

Jon

Re: Are HP 70900A and HP 70900B interchangeable ?

#144938

Apologies? typo error:
Not 70902,
.... should read 70900a > 70900b

Re: Agilent E7495A Firmware Above A.3.10

#144937

Hi Razvan

thank you, it worked OK.

I tried it first with a 2GB compact flash card but that didn't work so I tried a 256MB card and it worked OK so presumably it does not recognise such a large card.

Thanks again.

regards
Charles Edmonds VK3CLE
Mob: 0418309921
charles.edmonds@...

Re: Are HP 70900A and HP 70900B interchangeable ?

#144936

hi Ron.

For additional info:

See:
the Hp70k thread on the eevBlog:

The Hp 70902b FW can be upgraded to a newer version.
There *might* be an (unreasonable) way to mod a 70902a > to a "b" version,
.... but would be an extensive rabbit hole !

See:
Groups.io files section /g/hp70000/files
and KO4BB.

Re: Frequency References

#144935

I assume that you distribute the reference through a resistive splitter to each device.
The output of the LEO is a square wave and long cable lengths can cause waveform distortion due to reflections, especially for those units tapped off along the line.

ed

Re: Agilent E7495A Firmware Above A.3.10

#144934

Hello Charles,

I uploaded the last firmware released which was A06.25 and also the
Measurement Guide and Service Guide manuals.

/g/HP-Agilent-Keysight-equipment/files/All%20HP,%20Agilent%20and%20Keysight%20instruments%20in%20folders%20by%20part%20numbers/7000%20to%207999/E7495A_B

Firmware is the same for both A/B versions.

Regards,
Razvan

Show quoted text

On 20/06/2024 09:22, Charles Edmonds via groups.io wrote:
Hi,

I have an E7495A with F/W A.03.10-0.0.0.0. I can't find anything more
recent on the Keysight web site or anywhere else. I particularly want to
get at least A.03.20 as that adds a Sample Marker so should be better
for measuring noise levels.

Hoping someone can help please.

regards
Charles Edmonds
(Melbourne, Australia)
_._,_._,_

Agilent E7495A Firmware Above A.3.10

#144933

Hi,

I have an E7495A with F/W A.03.10-0.0.0.0. I can't find anything more recent on the Keysight web site or anywhere else. I particularly want to get at least A.03.20 as that adds a Sample Marker so should be better for measuring noise levels.

Hoping someone can help please.

regards
Charles Edmonds
(Melbourne, Australia)??

Re: Frequency References

#144932

We used the excellent Leo Bodnar GPS  for years, 

USB and Windows interface allow selection of F and V, 800 hZ..800 MHz, out to 32 dbm

We set the F to 10.000 MHz and output to MAX. 

We distribute the ref to all our TEK/HP/other via Mini circuits splitters, one Leo B GPS drives 5..10 50 Ohm ref inputs. 
 
Enjoy

Jon

Re: Frequency References

#144931

Hi there!

I'm not a time nut, but almost. I like my equipment to go at the same rythm, so I spent about €200 on two boxes: a GPSDO and an 8-output distribution amplifier and I am very happy with the result. My frequency measurements are precise and synchronized enough. Those were bought at eBay, from China, you know, that green and aluminum small boxes.

Regards,
Ruben

File /Winchester-Rack-and-Panel-Brochure.pdf uploaded #file-notice

Group Notification

#144930

The following files and folders have been uploaded to the Files area of the [email protected] group.

/Winchester-Rack-and-Panel-Brochure.pdf

By: RubenRubio <rubenrb2019@...>

Description:
Cataloge for Winchester Electronics Connectors present in 8660 synthesizer system mainframe and plugins

Re: Frequency References

#144929

On June 19, 2024 10:10:57 PM "Dave McGuire" <mcguire@...> wrote:
On June 19, 2024 9:59:33 PM "Roy Thistle" <roy.thistle@...> wrote:
Time Nut'time nut' ... 'volt nut'... or 'audiophile'... IMO... they sometimes make it harder for other 'nuts' to get the resources they need to actually 'do' stuff. The difference bei6, of course, that the former two actually know something about technology.  (err, "being")

--
Dave McGuire, AK4HZ
New Kensington, PA

Re: Frequency References

#144928

On June 19, 2024 9:59:33 PM "Roy Thistle" <roy.thistle@...> wrote:
Time Nut'time nut' ... 'volt nut'... or 'audiophile'... IMO... they sometimes make it harder for other 'nuts' to get the resources they need to actually 'do' stuff.  The difference bei6, of course, that the former two actually know something about technology.

              -Dave

--
Dave McGuire, AK4HZ
New Kensington, PA

Re: Frequency References

#144927

On Wed, Jun 19, 2024 at 09:03 AM, Matt Harris wrote:

Time Nut

'time nut' ... 'volt nut'... or 'audiophile'... IMO... they sometimes make it harder for other 'nuts' to get the resources they need to actually 'do' stuff.

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