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

control cart for LODA

#133047

hello group,

I am looking for an OMs who would have a copy of the implementation of the components and settings of the LODA control card and TRACKING GENERATOR because I do not have it in the manual I have thank you very much ON4LJ Jo?l

Re: HP 3457A FET Transistors

#133046

> I will get some on order

J3xx fet's should be (used to be ?) pretty cheap, I suggest getting quite a few more than required in case you need to do some matching or parameter binning for e.g. Idss , Vgs etc...

PS Craig, if you could disable your email signature for this list that would be nice; it comes with a bunch of attached images which is annoying and takes longer to load...

Re: 5086-7337 *Yig Oscillator issue*

#133045

Also I read about this on Kerry Wong blog and CuriousMarc video.

For the first harmonic band I need to place a mixer in the upper path. So the mod only be possible on band 0 (0 to 2.5 GHz)

Because the benefits of leveling circuitry, I'll give it a try for didactic and entertainment purposes, but still not happy with the project...

Regards,
Ruben

HP 83592A BLOCK DIAGRAM.pdf

Re: LODA and TG 85644A

#133044

On Tue, Feb 28, 2023 at 03:41 AM, Jeremy B wrote:

A few years ago I retrofitted the tracking generator option to my 8595E analyzer. I’m pretty sure the LO distribution amplifier (LODA) had a bias value written on the top label. There is a trim pot on the control board for setting the bias. All the information should be in the 8590 series service manual. You just have to fish through it and pick out your applicable unit.

Hello Jeremy,

thank you for your answer I will see on this side there and looked in the manual what is said about the settings to be made thank you very much joel ON4lj

Re: HP 3457A FET Transistors

#133043

Now that's a plan! I just won a non-functioning HP 5518A Laser head for 200 bucks because I'd always wanted to play with one and was really looking forward to trying to fix it and find out how they worked....changed the (intact looking) fuse but which measured around 250k Ohms...... and the darn thing lit up, locked and worked pretty much to spec.....Oh rats!
Adrian

Show quoted text

On 02/03/2023 04:17, Dave McGuire wrote:
I know!? I thought about asking a neighbor to come over and break it, and not tell me how.

Re: HP 3457A FET Transistors

#133042

That was a good price

Best Regards

CRAIG MAYFIELD | Director - Particle & Environmental Technologies
Alpha Scientific Pty Ltd
Melbourne Office

Phone: (03) 9893 3972
Mobile: 0413 124 589

Email: craig@...
Website: www.alphascientific.com.au

This e-mail message and any attachments are subject to copyright and they are intended only for the addressee and may contain confidential or privileged information. Confidentiality and privilege are not waived if you are not the intended recipient of this e-mail, nor may you use or retain, or disclose, copy or forward to any third party this e-mail, or any information contained in or attached to it. If you received this e-mail in error please delete it (and any copy of it from your computer system) and kindly notify the sender by reply e-mail. Alpha Scientific Pty Ltd does not warrant that this e-mail and / or any attachments are error or virus free and recommends that all attachments be scanned / checked for computer viruses.

Show quoted text

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Dave McGuire
Sent: Thursday, 2 March 2023 3:17 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 3457A FET Transistors


   I know!  I thought about asking a neighbor to come over and break it, and not tell me how.  But then I just decided to be happy about getting a 3457A for $75. B-)

             -Dave

On 3/1/23 19:59, Radu Bogdan Dicher wrote:
Dave - terrible!!! How did you cope with that at the time?.... :)

On Wed, Mar 1, 2023 at 4:55?PM Dave McGuire <mcguire@... 
<mailto:mcguire@...>> wrote:

    On 3/1/23 19:52, Craig Mayfield wrote:
     > OK, thanks David
     >
     > I assume I can email you back directly, is that correct ?

        Sure.  But while I own a 3457A, I've never had to repair it, so I
    can't help you with your FET issue.

        It was frustrating, actually.  I bought it on eBay as "broken",
    wouldn't power on, and got it very cheap. (like $75) The power switch
    was mechanically jammed.  I was looking forward to a fun
    troubleshooting
    session!

                 -Dave

    -- 
    Dave McGuire, AK4HZ
    New Kensington, PA






--
Dave McGuire, AK4HZ
New Kensington, PA

Re: HP 3457A FET Transistors

#133041

I know!  I thought about asking a neighbor to come over and break it, and not tell me how.  But then I just decided to be happy about getting a 3457A for $75. B-)

            -Dave

Show quoted text

On 3/1/23 19:59, Radu Bogdan Dicher wrote:
Dave - terrible!!! How did you cope with that at the time?.... :)
On Wed, Mar 1, 2023 at 4:55?PM Dave McGuire <mcguire@... <mailto:mcguire@...>> wrote:
On 3/1/23 19:52, Craig Mayfield wrote:
     > OK, thanks David
     >
     > I assume I can email you back directly, is that correct ?
? ?Sure.? But while I own a 3457A, I've never had to repair it, so I
    can't help you with your FET issue.
? ?It was frustrating, actually.? I bought it on eBay as "broken",
    wouldn't power on, and got it very cheap. (like $75) The power switch
    was mechanically jammed.? I was looking forward to a fun
    troubleshooting
    session!
? ? ? ? ? ? -Dave
-- 
    Dave McGuire, AK4HZ
    New Kensington, PA

-- 
Dave McGuire, AK4HZ
New Kensington, PA

Re: HP 3457A FET Transistors

#133040

开云体育

OK, thanks Ozan

I appreciate you valuable input

Best Regards

CRAIG MAYFIELD | Director - Particle & Environmental Technologies

Alpha Scientific Pty Ltd

Melbourne Office

Phone: (03) 9893 3972

Mobile: 0413 124 589

Email: craig@...

Website:

This e-mail message and any attachments are subject to copyright and they are intended only for the addressee and may contain confidential or privileged information. Confidentiality and privilege are not waived if you are not the intended recipient of this e-mail, nor may you use or retain, or disclose, copy or forward to any third party this e-mail, or any information contained in or attached to it. If you received this e-mail in error please delete it (and any copy of it from your computer system) and kindly notify the sender by reply e-mail. Alpha Scientific Pty Ltd does not warrant that this e-mail and / or any attachments are error or virus free and recommends that all attachments be scanned / checked for computer viruses.

Show quoted text

From: [email protected] <[email protected]> On Behalf Of Ozan
Sent: Thursday, 2 March 2023 2:22 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 3457A FET Transistors

On Wed, Mar 1, 2023 at 06:57 PM, Craig Mayfield wrote:

Hi Ozan
?
That’s excellent news if that’s the one and its directly compatible. I will get some on order asap if you are sure ?
?

---
Hi Craig,
I don't have this equipment and I didn't do any repairs on it so can't give you 100% assurance. However, I gave you the link to Keysight?(I am sure you know HP->Agilent->Keysight connection) part finder for the cross reference. It is as good as it gets for free advice :)

I usually don't recommend replacing parts without checking if they are faulty. However, everyone has a different debug approach.
Ozan

Re: HP 3457A FET Transistors

#133039

On Wed, Mar 1, 2023 at 06:57 PM, Craig Mayfield wrote:

Hi Ozan

?

That’s excellent news if that’s the one and its directly compatible. I will get some on order asap if you are sure ?

?

Re: HP 3457A FET Transistors

#133038

开云体育

Hi Ozan

That’s excellent news if that’s the one and its directly compatible. I will get some on order asap if you are sure ?

Best Regards

CRAIG MAYFIELD | Director - Particle & Environmental Technologies

Alpha Scientific Pty Ltd

Melbourne Office

Phone: (03) 9893 3972

Mobile: 0413 124 589

Email: craig@...

Website:

Show quoted text

From: [email protected] <[email protected]> On Behalf Of Ozan
Sent: Thursday, 2 March 2023 1:37 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 3457A FET Transistors

On Wed, Mar 1, 2023 at 06:06 PM, Craig Mayfield wrote:

Hi Ozan
?
Yes, I did. If I don’t, it comes up with an error 264. By doing the calibration, I am only left with an error 256. I then adjust the flatness pot and can get it to “0” PASS maybe 9 seconds out of 10 and then it fails once and then passes again and again and occasionally fails again. When I do the self test, it FAILS every time with 256
?
This guy has 3 videos in a series which were helpful. He replaced the FETS and the problem was eliminated. He seems to be having the same issue as me. I just don’t know which FETS he used and Keysight can’t tell me
?
?
?

---
Hi Craig,
Debugging the actual issue is more fun and I am sure Dave would agree but the transistor can be found by searching Keysight:

Database says it is a J304. Mouser in US has them, I don't know about the distributors in Australia.

Ozan

Re: HP 3457A FET Transistors

#133037

On Wed, Mar 1, 2023 at 06:06 PM, Craig Mayfield wrote:

Hi Ozan

?

Yes, I did. If I don’t, it comes up with an error 264. By doing the calibration, I am only left with an error 256. I then adjust the flatness pot and can get it to “0” PASS maybe 9 seconds out of 10 and then it fails once and then passes again and again and occasionally fails again. When I do the self test, it FAILS every time with 256

?

This guy has 3 videos in a series which were helpful. He replaced the FETS and the problem was eliminated. He seems to be having the same issue as me. I just don’t know which FETS he used and Keysight can’t tell me

?

https://www.youtube.com/watch?v=5HSO3A_lZUo

?

?

Re: HP 3457A FET Transistors

#133036

开云体育

Hi Ozan

Yes, I did. If I don’t, it comes up with an error 264. By doing the calibration, I am only left with an error 256. I then adjust the flatness pot and can get it to “0” PASS maybe 9 seconds out of 10 and then it fails once and then passes again and again and occasionally fails again. When I do the self test, it FAILS every time with 256

This guy has 3 videos in a series which were helpful. He replaced the FETS and the problem was eliminated. He seems to be having the same issue as me. I just don’t know which FETS he used and Keysight can’t tell me

https://www.youtube.com/watch?v=5HSO3A_lZUo

Best Regards

CRAIG MAYFIELD | Director - Particle & Environmental Technologies

Alpha Scientific Pty Ltd

Melbourne Office

Phone: (03) 9893 3972

Mobile: 0413 124 589

Email: craig@...

Website:

Show quoted text

From: [email protected] <[email protected]> On Behalf Of Ozan
Sent: Thursday, 2 March 2023 1:00 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 3457A FET Transistors

On Wed, Mar 1, 2023 at 04:42 PM, Craig Mayfield wrote:

?
I have only just joined this group earlier today and am still trying to work out how to navigate my way around
?
I have a HP 3457A and it keeps giving me an error 256. I have replaced the filter caps and followed the steps in as shown in a series of YouTube videos and I can get the diagnostic 8 to pass most of the time, however it then fails. On the YouTube series, the guy replaced 6 of the FETS as shown in the attached document. I am trying to find modern equivalents of these to order them. I have contacted Keysight and Element 14 to no avail. Can someone suggest a part number and or brand of FET I can use which should do the job as per the manufacturers original specs ?

----
Hi Craig,
Service manual says

"8-49. Front end zero measurement errors (error code 16) and AC flatness test errors (error code 256) can often be remedied by calibration. Refer to Section V for the appropriate procedures."

Did you try doing an AC calibration first?

Ozan

Re: HP 3457A FET Transistors

#133035

On Wed, Mar 1, 2023 at 04:42 PM, Craig Mayfield wrote:

?

I have only just joined this group earlier today and am still trying to work out how to navigate my way around

?

I have a HP 3457A and it keeps giving me an error 256. I have replaced the filter caps and followed the steps in as shown in a series of YouTube videos and I can get the diagnostic 8 to pass most of the time, however it then fails. On the YouTube series, the guy replaced 6 of the FETS as shown in the attached document. I am trying to find modern equivalents of these to order them. I have contacted Keysight and Element 14 to no avail. Can someone suggest a part number and or brand of FET I can use which should do the job as per the manufacturers original specs ?

Re: HP 3457A FET Transistors

#133034

开云体育

OK, thanks Radu, that would be great ?

Best Regards

CRAIG MAYFIELD | Director - Particle & Environmental Technologies

Alpha Scientific Pty Ltd

Melbourne Office

Phone: (03) 9893 3972

Mobile: 0413 124 589

Email: craig@...

Website:

Show quoted text

From: [email protected] <[email protected]> On Behalf Of Radu Bogdan Dicher
Sent: Thursday, 2 March 2023 12:23 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 3457A FET Transistors

Craig,

Kidding aside, I'm sure you'll get good help here with your repair.

Radu.?

On Wed, Mar 1, 2023 at 5:02?PM Craig Mayfield <craig@...> wrote:

Ahh, OK, thanks Dave

Best Regards

CRAIG MAYFIELD | Director - Particle & Environmental Technologies
Alpha Scientific Pty Ltd
Melbourne Office

Phone: (03) 9893 3972
Mobile: 0413 124 589

Email: craig@...
Website:

This e-mail message and any attachments are subject to copyright and they are intended only for the addressee and may contain confidential or privileged information. Confidentiality and privilege are not waived if you are not the intended recipient of this e-mail, nor may you use or retain, or disclose, copy or forward to any third party this e-mail, or any information contained in or attached to it. If you received this e-mail in error please delete it (and any copy of it from your computer system) and kindly notify the sender by reply e-mail. Alpha Scientific Pty Ltd does not warrant that this e-mail and / or any attachments are error or virus free and recommends that all attachments be scanned / checked for computer viruses.

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Dave McGuire
Sent: Thursday, 2 March 2023 11:55 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 3457A FET Transistors

On 3/1/23 19:52, Craig Mayfield wrote:
> OK, thanks David
>
> I assume I can email you back directly, is that correct ?

? ?Sure.? But while I own a 3457A, I've never had to repair it, so I can't help you with your FET issue.

? ?It was frustrating, actually.? I bought it on eBay as "broken", wouldn't power on, and got it very cheap. (like $75) The power switch was mechanically jammed.? I was looking forward to a fun troubleshooting session!

? ? ? ? ? ? -Dave

--
Dave McGuire, AK4HZ
New Kensington, PA

Re: HP 3457A FET Transistors

#133033

Craig,

Kidding aside, I'm sure you'll get good help here with your repair.

Radu.?

Show quoted text

On Wed, Mar 1, 2023 at 5:02?PM Craig Mayfield <craig@...> wrote:

Ahh, OK, thanks Dave

Best Regards

CRAIG MAYFIELD | Director - Particle & Environmental Technologies
Alpha Scientific Pty Ltd
Melbourne Office

Phone: (03) 9893 3972
Mobile: 0413 124 589

Email: craig@...
Website:

This e-mail message and any attachments are subject to copyright and they are intended only for the addressee and may contain confidential or privileged information. Confidentiality and privilege are not waived if you are not the intended recipient of this e-mail, nor may you use or retain, or disclose, copy or forward to any third party this e-mail, or any information contained in or attached to it. If you received this e-mail in error please delete it (and any copy of it from your computer system) and kindly notify the sender by reply e-mail. Alpha Scientific Pty Ltd does not warrant that this e-mail and / or any attachments are error or virus free and recommends that all attachments be scanned / checked for computer viruses.

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Dave McGuire
Sent: Thursday, 2 March 2023 11:55 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 3457A FET Transistors

On 3/1/23 19:52, Craig Mayfield wrote:
> OK, thanks David
>
> I assume I can email you back directly, is that correct ?

? ?Sure.? But while I own a 3457A, I've never had to repair it, so I can't help you with your FET issue.

? ?It was frustrating, actually.? I bought it on eBay as "broken", wouldn't power on, and got it very cheap. (like $75) The power switch was mechanically jammed.? I was looking forward to a fun troubleshooting session!

? ? ? ? ? ? -Dave

--
Dave McGuire, AK4HZ
New Kensington, PA

Re: HP 3457A FET Transistors

#133032

Ahh, OK, thanks Dave

Best Regards

CRAIG MAYFIELD | Director - Particle & Environmental Technologies
Alpha Scientific Pty Ltd
Melbourne Office

Phone: (03) 9893 3972
Mobile: 0413 124 589

Email: craig@...
Website: www.alphascientific.com.au

This e-mail message and any attachments are subject to copyright and they are intended only for the addressee and may contain confidential or privileged information. Confidentiality and privilege are not waived if you are not the intended recipient of this e-mail, nor may you use or retain, or disclose, copy or forward to any third party this e-mail, or any information contained in or attached to it. If you received this e-mail in error please delete it (and any copy of it from your computer system) and kindly notify the sender by reply e-mail. Alpha Scientific Pty Ltd does not warrant that this e-mail and / or any attachments are error or virus free and recommends that all attachments be scanned / checked for computer viruses.

Show quoted text

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Dave McGuire
Sent: Thursday, 2 March 2023 11:55 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 3457A FET Transistors

On 3/1/23 19:52, Craig Mayfield wrote:
OK, thanks David

I assume I can email you back directly, is that correct ?   Sure.  But while I own a 3457A, I've never had to repair it, so I can't help you with your FET issue.

   It was frustrating, actually.  I bought it on eBay as "broken", wouldn't power on, and got it very cheap. (like $75) The power switch was mechanically jammed.  I was looking forward to a fun troubleshooting session!

            -Dave

--
Dave McGuire, AK4HZ
New Kensington, PA

Re: HP 3457A FET Transistors

#133031

Dave - terrible!!! How did you cope with that at the time?.... :)

Show quoted text

On Wed, Mar 1, 2023 at 4:55?PM Dave McGuire <mcguire@...> wrote:

On 3/1/23 19:52, Craig Mayfield wrote:
> OK, thanks David
>
> I assume I can email you back directly, is that correct ?

? ?Sure.? But while I own a 3457A, I've never had to repair it, so I
can't help you with your FET issue.

? ?It was frustrating, actually.? I bought it on eBay as "broken",
wouldn't power on, and got it very cheap. (like $75) The power switch
was mechanically jammed.? I was looking forward to a fun troubleshooting
session!

? ? ? ? ? ? -Dave

--
Dave McGuire, AK4HZ
New Kensington, PA

Re: HP 3457A FET Transistors

#133030

On 3/1/23 19:52, Craig Mayfield wrote:
OK, thanks David
I assume I can email you back directly, is that correct ?  Sure.  But while I own a 3457A, I've never had to repair it, so I can't help you with your FET issue.

  It was frustrating, actually.  I bought it on eBay as "broken", wouldn't power on, and got it very cheap. (like $75) The power switch was mechanically jammed.  I was looking forward to a fun troubleshooting session!

           -Dave

-- 
Dave McGuire, AK4HZ
New Kensington, PA

Re: HP 3457A FET Transistors

#133029

OK, thanks David

I assume I can email you back directly, is that correct ?

Best Regards

CRAIG MAYFIELD | Director - Particle & Environmental Technologies
Alpha Scientific Pty Ltd
Melbourne Office

Phone: (03) 9893 3972
Mobile: 0413 124 589

Email: craig@...
Website: www.alphascientific.com.au

This e-mail message and any attachments are subject to copyright and they are intended only for the addressee and may contain confidential or privileged information. Confidentiality and privilege are not waived if you are not the intended recipient of this e-mail, nor may you use or retain, or disclose, copy or forward to any third party this e-mail, or any information contained in or attached to it. If you received this e-mail in error please delete it (and any copy of it from your computer system) and kindly notify the sender by reply e-mail. Alpha Scientific Pty Ltd does not warrant that this e-mail and / or any attachments are error or virus free and recommends that all attachments be scanned / checked for computer viruses.

Show quoted text

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Dave McGuire
Sent: Thursday, 2 March 2023 11:45 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 3457A FET Transistors

On 3/1/23 18:31, Craig Mayfield wrote:
I have only just joined this group earlier today and am still trying 
to work out how to navigate my way around   It is a mailing list with a (poor) web front end.  You'll find it works a whole lot better as a mailing list, rather than trying to use it as a "web forum".  Just FYI.

                -Dave

--
Dave McGuire, AK4HZ
New Kensington, PA

Re: HP 3457A FET Transistors

#133028

On 3/1/23 18:31, Craig Mayfield wrote:
I have only just joined this group earlier today and am still trying to work out how to navigate my way around  It is a mailing list with a (poor) web front end.  You'll find it works a whole lot better as a mailing list, rather than trying to use it as a "web forum".  Just FYI.

               -Dave

-- 
Dave McGuire, AK4HZ
New Kensington, PA

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