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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
- 础尘辫濒颈蹿颈别谤蝉听493A, 495A听
- Attenuators (optical) 8156A, 8157A, 8158B, 81566A, 81576A,听
- Attenuators (RF) 8494A
- Attenuator set (500 惟) 350C
- Attenuator set (600 惟) 350D
- Attenuator switch driver
- Audio analyzers听 8903A, 8903B, 8903E,听 听
- Base station test sets
- Bit error rate testers (BERTs)
- Cables
- Capacitance meters U1701A, U1701B, 4272A, 4278A, 4279A
- Capacitor Bridge 4270A,
- Capacitor standards 16380A, 16380C,听
- 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,听听听
- Dynamic measurement DC source
- Electrometers
- Fading simulators
- Femto ammeters
- Filters
- Frequency counters 522B, 5342A 5343A 5352B
- Frequency standards听
- Function Generators 听 3310A,听 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听 U1701A, U1701B, U1731A,听 U1731B, U1731C, U1732A, U1732B, U1732C, U1733C, 4191A , 4192A, 4194A, 4195A, E4196A,听 4216A, 4260A, 4261A, 4262A听 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听 16380A 42030A听 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听 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,听 54645A, 54654N, 54710A, 54720A, 54750A, 54825N, E1428,听
- Oven controlled crystal oscillators (OCXOs)
- Pattern generators
- PCM terminal test set
- Phase noise measurement
- Pico ammeters
- Printers 2225
- Plotters 7470A, 7475A听
- 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听
- 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听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,听 608A,听 8165A
- Software
- Source measure units
- Spectrum analyzers 4195A,听听听
- Switch control units
- SWR meter 415E听
- Time interval听 counters
- Time mark generator 226A
- Timing and data state modules
- Torque wrenches
- Transmitter testers
- Trigger modules
- Ultrasound transducers
- Universal bridge听 4260A, 4265A, 4265B听
- Vacuum tube voltmeter 410C
- Vector Impedance Meter 4193A, 4800A, 4815A
- Vector Network Analyzers (VNAs) 4195A,听 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: 8594E power supply
For all of you with the 859X series portable spectrum analyzers, here is some information that may be useful. Earlier versions of the analyzers used a power supply which was designed and made outside of HP. After a few years, failures started surfacing and HP (re)designed the supply in-house. The later supplies are therefore a HP design and those are the ones for which a schematic is often available. Those schematics will have the HP logo, etc. in the bottom right corner.
Vladan |
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Re: 8594E power supply
Hi all,
Thanks for your help. I've just found a sch witch seems quite similar to what I have on the boards in this thread: So I can investigate a bit. The fuse didn't blown and no smoke! Will tell you more if I found something! Roland, F8CHK ________________________________ De : hp_agilent_equipment@... [mailto:hp_agilent_equipment@...] Envoy茅 : mardi 11 juillet 2017 15:43 脌 : hp_agilent_equipment@... Objet : SV: [hp_agilent_equipment] 8594E power supply Hi Roland I have repaired several of these PSU and there is no SCH for it but if you have the SCH for the 8560E series PSU you will find a lot similar. The main error I have found is the switching FET鈥檚 and the corresponding small resistors, if my fussy memory is correct there are a 220 ohm and a 10 ohm leaded resistor to each FET check these. The low voltage board has come in 3 different versions where the latest is SMT but the design is the same but I have not yet repaired any of these yet so concentrate on the HV switching and the capacitors here as well. I hope this can help you a bit on the way, I have a handwritten SCH for a 8593A which also gives an idea of the built for the E series if you would like this let me know. Michael, OZ2ELA Fra: hp_agilent_equipment@... [mailto:hp_agilent_equipment@...] Sendt: 11. juli 2017 12:36 Til: hp_agilent_equipment@... Emne: [hp_agilent_equipment] 8594E power supply Hi all, I am trying to repair a 8594E spectrum analyser for a friend. The power supply is faulty, none of the output voltages are ok, all leds on the ps are off. This is the 5062-8229 model, made in USA in the 90's. Three boards: switching regulator 60024, output regulator 60025 and command 60026. I have read that no schematics are available, is that still true? No visible default, testing diodes, transistors, resistors, chemicals caps, didn't find the problem. I'm wandering if anyone have a faulty ps on a shelf, that may be I could use to repair mine, two bads = one good, hi! Open to any idea! Thanks for reading, Roland F8CHK |
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Re: 8594E power supply
开云体育Hi Roland 听 I have repaired several of these PSU and there is no SCH for it but if you have the SCH for the 8560E series PSU you will find a lot similar. 听 The main error I have found is the switching FET鈥檚 and the corresponding small resistors, if my fussy memory is correct there are a 220 ohm and a 10 ohm leaded resistor to each FET check these. 听 The low voltage board has come in 3 different versions where the latest is SMT but the design is the same but I have not yet repaired any of these yet so concentrate on the HV switching and the capacitors here as well. 听 I hope this can help you a bit on the way, I have a handwritten SCH for a 8593A which also gives an idea of the built for the E series if you would like this let me know. 听 Michael, OZ2ELA 听 Fra: hp_agilent_equipment@... [mailto:hp_agilent_equipment@...] 听 听 Hi all, |
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HP 4815A probe repair
Hi : Is there anybody did repair the probe for HP 4815A ? Did anyone had measure the resistance between pins of the probe plug? I did but , the reading had big different from the manual page 5-13 ? I am using a HP412 to measure the DC resistance ! Any advise ? Regard Tony Cheung JUL 11 2017 |
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Re: 8594E power supply
If the fuse isn't blown, some of the small 1-10 uf caps associated with soft start near the control IC may be bad.听 You also may need to replace some of the caps on the output side of the supply.听 A good ESR meter is useful along with a "octopus" or Huntron Tracker type unit that shows characteristic curves in circuit.听 Use good caps sourced from a known non-counterfeit vendor... When servicing power supplies for the Heath/Zenith computers (1980's) we only occasionally had schematics.听 We called the fuse the module replacement indicator due to the fact it took 4x longer to rebuild one that failed with magic smoke release... Jim n8qoh On Tuesday, July 11, 2017, 8:36:00 AM EDT, george g_einst@... [hp_agilent_equipment] wrote: Hi Roland It is common for no schematics to be available for HP power supplies as these were frequently bought in to a specification not a design from third parties at the time that the 8594E was manufactured. My guess is that your chances of finding a spare PSU is about as good as finding Hens teeth. I can and have repaired HP switch mode power supplies.听 If I can help you please PM me. 73 George G6HIG ________________________________________ From: hp_agilent_equipment@... <hp_agilent_equipment@...> on behalf of 'Roland ETIENNE' roland.etienne@... [hp_agilent_equipment] <hp_agilent_equipment@...> Sent: 11 July 2017 10:36 To: hp_agilent_equipment@... Subject: [hp_agilent_equipment] 8594E power supply Hi all, I am trying to repair a 8594E spectrum analyser for a friend. The power supply is faulty, none of the output voltages are ok, all leds on the ps are off. This is the 5062-8229 model, made in USA in the 90's. Three boards: switching regulator 60024, output regulator 60025 and command 60026. I have read that no schematics are available, is that still true? No visible default, testing diodes, transistors, resistors, chemicals caps, didn't find the problem. I'm wandering if anyone have a faulty ps on a shelf, that may be I could use to repair mine, two bads = one good, hi! Open to any idea! Thanks for reading, Roland F8CHK ------------------------------------ ------------------------------------ ------------------------------------ Yahoo Groups Links <*> To visit your group on the web, go to: 听 听 <*> Your email settings: 听 听 Individual Email | Traditional <*> To change settings online go to: 听 听 听 听 (Yahoo! ID required) <*> To change settings via email: 听 听 hp_agilent_equipment-digest@... 听 听 hp_agilent_equipment-fullfeatured@... <*> To unsubscribe from this group, send an email to: 听 听 hp_agilent_equipment-unsubscribe@... <*> Your use of Yahoo Groups is subject to: 听 听 |
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Re: 8594E power supply
Hi Roland
It is common for no schematics to be available for HP power supplies as these were frequently bought in to a specification not a design from third parties at the time that the 8594E was manufactured. My guess is that your chances of finding a spare PSU is about as good as finding Hens teeth. I can and have repaired HP switch mode power supplies. If I can help you please PM me. 73 George G6HIG ________________________________________ From: hp_agilent_equipment@... <hp_agilent_equipment@...> on behalf of 'Roland ETIENNE' roland.etienne@... [hp_agilent_equipment] <hp_agilent_equipment@...> Sent: 11 July 2017 10:36 To: hp_agilent_equipment@... Subject: [hp_agilent_equipment] 8594E power supply Hi all, I am trying to repair a 8594E spectrum analyser for a friend. The power supply is faulty, none of the output voltages are ok, all leds on the ps are off. This is the 5062-8229 model, made in USA in the 90's. Three boards: switching regulator 60024, output regulator 60025 and command 60026. I have read that no schematics are available, is that still true? No visible default, testing diodes, transistors, resistors, chemicals caps, didn't find the problem. I'm wandering if anyone have a faulty ps on a shelf, that may be I could use to repair mine, two bads = one good, hi! Open to any idea! Thanks for reading, Roland F8CHK |
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Re: ifr 2390 analyser
Hello Bob,
toggle quoted message
Show quoted text
Please call me on either landline or mobile. Tnx Cliff G4BGP |
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8594E power supply
Hi all,
I am trying to repair a 8594E spectrum analyser for a friend. The power supply is faulty, none of the output voltages are ok, all leds on the ps are off. This is the 5062-8229 model, made in USA in the 90's. Three boards: switching regulator 60024, output regulator 60025 and command 60026. I have read that no schematics are available, is that still true? No visible default, testing diodes, transistors, resistors, chemicals caps, didn't find the problem. I'm wandering if anyone have a faulty ps on a shelf, that may be I could use to repair mine, two bads = one good, hi! Open to any idea! Thanks for reading, Roland F8CHK |
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Re: E4406A Input Attenuator
Did you check input attenuator (if remember 7dB 5W SMA-m SMA-f) just听 behind input N connector? For IP address and real time clock, change the battery on main board -听 Panasonic BR2325 Lithium Polycarbon Monofloride 3V, 0.16 Ah. Milan On 10 Jul 2017 21:02, "'hardy hansen' hardyhansen@... [hp_agilent_equipment]" <hp_agilent_equipment@...> wrote:
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Graticule Brightness Adj for the HP-8562A
开云体育I had no trouble finding & using the front panel firmware
adjustments for changing the main SA trace brightness but I need
to turn up the brightness of the background grids (graticules) and
misc text etc on the CRT.茂驴陆 Can this be done from the front panel
as well or do I need to open up the unit and mess with the video
driver PCB? Gedas, W8BYA Gallery at Light travels faster than sound.... This is why some people appear bright until you hear them speak. |
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Re: E4406A Input Attenuator
开云体育ok You use the input att to optimize your dynamic range of the analyzer--thats first of all determined by 听the first mixer 2d 3d 听compression point.Most hp analyzers are made to use the full dynamic range with signals below -20dBm--one normally use the input att to place the input signal at that range to have the max dynamic range---or optimize when using an external low noise preamp. Hardy 听 Fra:
hp_agilent_equipment@...
[mailto:hp_agilent_equipment@...] 听 听 This is normal when you chance att settings-all
but noisefloor will remain ----- Original Message -----
From: 'hardy hansen' hardyhansen@... [hp_agilent_equipment]<mailto:hardyhansen@...%20[hp_agilent_equipme nt]> To: hp_agilent_equipment@... .com> Sent: Sunday, July 09, 2017 11:05 PM Subject: SV: [hp_agilent_equipment] E4406A Input Attenuator Tom et al If the loss is exactly 15 DB i would look for something else. Regards Hardy Fra: hp_agilent_equipment@... .com> [mailto:hp_agilent_equipment@...] Sendt: 10. juli 2017 04:53 Til: hp_agilent_equipment@... .com> Emne: Re: [hp_agilent_equipment] E4406A Input Attenuator I'm betting it is the GaAs spdt rf switch on the input that has the loss. ----- Original Message ----- From: 'hardy hansen' hardyhansen@... [hp_agilent_equipment] nt]> To: hp_agilent_equipment@... .com> Sent: Sunday, July 09, 2017 9:38 PM Subject: SV: [hp_agilent_equipment] E4406A Input Attenuator Tom Have sent the rf clip to tony--the pictures you are asking for are very easy to find on the internet Fra: hp_agilent_equipment@... .com> [mailto:hp_agilent_equipment@...] Sendt: 10. juli 2017 00:07 Til: hp_agilent_equipment@...<mailto:hp_agilent_equipment@yahoogroups .com> Emne: Re: [hp_agilent_equipment] E4406A Input Attenuator Can you get a few good pictures of the RF section and post them? Maybe we can identify how they did the attenuators. Some that I have seen used Gaas smt spdt RF switches for the attenuators. Later 8657 sig gens did this. Regards ----- Original Message ----- From: "Tony Goodhew tony_goodhew@... [hp_agilent_equipment]" To: Sent: Sunday, July 09, 2017 5:56 PM Subject: RE: [hp_agilent_equipment] E4406A Input Attenuator Thanks I took the unit apart, including opening up the A17 RF Assembly, and there didnt appear to be any mechanical relays in there. I couldnt find any information on the components closest to the RF input to identify any solid state relays or programmable attenuators. In checking around I saw that Agilent promised in 2014 to post the CLIPs for the E4406A but they dont seem to have followed through on that. Does anyone happen to have them and could send me the A17 one? Thanks, TonyG Sent from Mail for Windows 10 From: Artek Manuals manuals@... [hp_agilent_equipment] Sent: Sunday, July 9, 2017 11:36 AM To: hp_agilent_equipment@... .com> Subject: Re: [hp_agilent_equipment] E4406A Input Attenuator Sounds like you on the right track , If you lucky the relay is just stuck as you say and you might exercise your way out of it... could also have suffered from input overload ...a bit harder to fix On 7/9/2017 2:30 PM, tony_goodhew@... [hp_agilent_equipment] wrote: Hi All, I just acquired an E4406A and put it on my bench. It seems to work fine except that it is consistently reading 15dB low. Poking around I found a control for the input attenuator and that seems to have no impact on the measured value. From there I looked at the services/test guide and ran through the 50MHz Input Attenuator Accuracy test and that showed no change so I think that the attenuator is stuck. Before I start pulling this apart I thought I might check in to see if I'm missed something in the system settings that might cause this? Thanks, TonyG -- Dave Manuals@... www.ArtekManuals.com [https://ipmcdn.avast.com/images/icons/icon-envelope-tick-round-orange-anima ted-no-repeat-v1.gif] m_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclien t&utm_term=oa-3176-b> Virus-free. www.avast.com =email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_te rm=oa-3176-b> [Non-text portions of this message have been removed] ------------------------------------ ------------------------------------ ------------------------------------ Yahoo Groups Links paign=sig-email&utm_content=emailclient> Virusfri. paign=sig-email&utm_content=emailclient> www.avg.com [https://ipmcdn.avast.com/images/icons/icon-envelope-tick-green-avg-v1.png]< http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_camp aign=sig-email&utm_content=emailclient> Virusfri. www.avg.com ink&utm_campaign=sig-email&utm_content=emailclient> [Non-text portions of this message have been removed] ------------------------------------ ------------------------------------ ------------------------------------ Yahoo Groups Links --- Denne mail er kontrolleret for vira af AVG. http://www.avg.com
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Re: E4406A Input Attenuator
This is normal when you chance att settings-all but noisefloor will remain
toggle quoted message
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steady-thats one of the good things whith the new type of analyzers-- Hardy -----Oprindelig meddelelse----- Fra: hp_agilent_equipment@... [mailto:hp_agilent_equipment@...] Sendt: 10. juli 2017 16:18 Til: hp_agilent_equipment@... Emne: RE: [hp_agilent_equipment] E4406A Input Attenuator Thanks all - For a bit more information here is what I experience: 1. Set sig gen to 50 MHz, 0dBm 2. Measure signal using VSA == -16.25dBm 3. Set input attenuator for 40dB 4. Measure signal using VSA == -15.4dBm 5. Change sig gen to 1000Mhz, 0dBm 6. Measure signal using VSA == -16.2dBm Changing the input attenuator does seem to change where the noise floor is but doesn't seem to impact the measured signal at all. This seems strange to me but I am far from proficient using this piece of gear. BTW The unit passes all self-tests & alignments without error but does seem to exhibit a problem (reported here on the forum before) of the LAN connection losing it's IP address between reboots). TonyG Sent from Mail<> for Windows 10 From: 'hardy hansen' hardyhansen@... [hp_agilent_equipment]<mailto:hp_agilent_equipment@...> Sent: Monday, July 10, 2017 4:59 AM To: hp_agilent_equipment@...<mailto:hp_agilent_equipment@yahoogroups .com> Subject: SV: [hp_agilent_equipment] E4406A Input Attenuator Yes But it completes selftest--so the faullt has to be between rf input connector and rf switch(used only for cal)- first mixer. The selftest checks frontend att 1 dB steps from 0-40 with a 50Mhz signal . Hardy Fra: hp_agilent_equipment@... [mailto:hp_agilent_equipment@...] Sendt: 10. juli 2017 05:43 Til: hp_agilent_equipment@... Emne: Re: [hp_agilent_equipment] E4406A Input Attenuator It sure could be something else. Even a low LO to the mixer. ----- Original Message -----
From: 'hardy hansen' hardyhansen@... [hp_agilent_equipment]<mailto:hardyhansen@...%20[hp_agilent_equipme nt]> To: hp_agilent_equipment@...<mailto:hp_agilent_equipment@yahoogroups .com> Sent: Sunday, July 09, 2017 11:05 PM Subject: SV: [hp_agilent_equipment] E4406A Input Attenuator Tom et al If the loss is exactly 15 DB i would look for something else. Regards Hardy Fra: hp_agilent_equipment@...<mailto:hp_agilent_equipment@yahoogroups .com> [mailto:hp_agilent_equipment@...] Sendt: 10. juli 2017 04:53 Til: hp_agilent_equipment@...<mailto:hp_agilent_equipment@yahoogroups .com> Emne: Re: [hp_agilent_equipment] E4406A Input Attenuator I'm betting it is the GaAs spdt rf switch on the input that has the loss. ----- Original Message ----- From: 'hardy hansen' hardyhansen@... [hp_agilent_equipment]<mailto:hardyhansen@...%20[hp_agilent_equipme nt]> To: hp_agilent_equipment@...<mailto:hp_agilent_equipment@yahoogroups .com> Sent: Sunday, July 09, 2017 9:38 PM Subject: SV: [hp_agilent_equipment] E4406A Input Attenuator Tom Have sent the rf clip to tony--the pictures you are asking for are very easy to find on the internet Fra: hp_agilent_equipment@...<mailto:hp_agilent_equipment@yahoogroups .com> [mailto:hp_agilent_equipment@...] Sendt: 10. juli 2017 00:07 Til: hp_agilent_equipment@...<mailto:hp_agilent_equipment@yahoogroups .com> Emne: Re: [hp_agilent_equipment] E4406A Input Attenuator Can you get a few good pictures of the RF section and post them? Maybe we can identify how they did the attenuators. Some that I have seen used Gaas smt spdt RF switches for the attenuators. Later 8657 sig gens did this. Regards ----- Original Message ----- From: "Tony Goodhew tony_goodhew@... [hp_agilent_equipment]" <hp_agilent_equipment@...> To: <hp_agilent_equipment@...> Sent: Sunday, July 09, 2017 5:56 PM Subject: RE: [hp_agilent_equipment] E4406A Input Attenuator Thanks I took the unit apart, including opening up the A17 RF Assembly, and there didnt appear to be any mechanical relays in there. I couldnt find any information on the components closest to the RF input to identify any solid state relays or programmable attenuators. In checking around I saw that Agilent promised in 2014 to post the CLIPs for the E4406A but they dont seem to have followed through on that. Does anyone happen to have them and could send me the A17 one? Thanks, TonyG Sent from Mail<> for Windows 10 From: Artek Manuals manuals@... [hp_agilent_equipment]<mailto:hp_agilent_equipment@...> Sent: Sunday, July 9, 2017 11:36 AM To: hp_agilent_equipment@...<mailto:hp_agilent_equipment@yahoogroups .com> Subject: Re: [hp_agilent_equipment] E4406A Input Attenuator Sounds like you on the right track , If you lucky the relay is just stuck as you say and you might exercise your way out of it... could also have suffered from input overload ...a bit harder to fix On 7/9/2017 2:30 PM, tony_goodhew@...<mailto:tony_goodhew@...> [hp_agilent_equipment] wrote: Hi All, I just acquired an E4406A and put it on my bench. It seems to work fine except that it is consistently reading 15dB low. Poking around I found a control for the input attenuator and that seems to have no impact on the measured value. From there I looked at the services/test guide and ran through the 50MHz Input Attenuator Accuracy test and that showed no change so I think that the attenuator is stuck. Before I start pulling this apart I thought I might check in to see if I'm missed something in the system settings that might cause this? Thanks, TonyG -- Dave Manuals@...<mailto:Manuals@...> www.ArtekManuals.com<> [ ted-no-repeat-v1.gif]< m_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclien t&utm_term=oa-3176-b> Virus-free. www.avast.com< =email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_te rm=oa-3176-b> [Non-text portions of this message have been removed] ------------------------------------ ------------------------------------ ------------------------------------ Yahoo Groups Links < paign=sig-email&utm_content=emailclient> Virusfri. < paign=sig-email&utm_content=emailclient> www.avg.com [Non-text portions of this message have been removed] [https://ipmcdn.avast.com/images/icons/icon-envelope-tick-green-avg-v1.png]< aign=sig-email&utm_content=emailclient> Virusfri. www.avg.com< ink&utm_campaign=sig-email&utm_content=emailclient> [Non-text portions of this message have been removed] ------------------------------------ ------------------------------------ ------------------------------------ Yahoo Groups Links --- Denne mail er kontrolleret for vira af AVG. |
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Re: E4406A Input Attenuator
Thanks all � For a bit more information here is what I experience:
1. Set sig gen to 50 MHz, 0dBm 2. Measure signal using VSA == -16.25dBm 3. Set input attenuator for 40dB 4. Measure signal using VSA == -15.4dBm 5. Change sig gen to 1000Mhz, 0dBm 6. Measure signal using VSA == -16.2dBm Changing the input attenuator does seem to change where the noise floor is but doesn抰 seem to impact the measured signal at all. This seems strange to me but I am far from proficient using this piece of gear. BTW The unit passes all self-tests & alignments without error but does seem to exhibit a problem (reported here on the forum before) of the LAN connection losing it抯 IP address between reboots). TonyG Sent from Mail<> for Windows 10 From: 'hardy hansen' hardyhansen@... [hp_agilent_equipment]<mailto:hp_agilent_equipment@...> Sent: Monday, July 10, 2017 4:59 AM To: hp_agilent_equipment@...<mailto:hp_agilent_equipment@...> Subject: SV: [hp_agilent_equipment] E4406A Input Attenuator Yes But it completes selftest--so the faullt has to be between rf input connector and rf switch(used only for cal)- first mixer. The selftest checks frontend att 1 dB steps from 0-40 with a 50Mhz signal . Hardy Fra: hp_agilent_equipment@... [mailto:hp_agilent_equipment@...] Sendt: 10. juli 2017 05:43 Til: hp_agilent_equipment@... Emne: Re: [hp_agilent_equipment] E4406A Input Attenuator It sure could be something else. Even a low LO to the mixer. ----- Original Message ----- From: 'hardy hansen' hardyhansen@... [hp_agilent_equipment]<mailto:hardyhansen@...%20[hp_agilent_equipment]> To: hp_agilent_equipment@...<mailto:hp_agilent_equipment@...> Sent: Sunday, July 09, 2017 11:05 PM Subject: SV: [hp_agilent_equipment] E4406A Input Attenuator Tom et al If the loss is exactly 15 DB i would look for something else. Regards Hardy Fra: hp_agilent_equipment@...<mailto:hp_agilent_equipment@...> [mailto:hp_agilent_equipment@...] Sendt: 10. juli 2017 04:53 Til: hp_agilent_equipment@...<mailto:hp_agilent_equipment@...> Emne: Re: [hp_agilent_equipment] E4406A Input Attenuator I'm betting it is the GaAs spdt rf switch on the input that has the loss. ----- Original Message ----- From: 'hardy hansen' hardyhansen@... [hp_agilent_equipment]<mailto:hardyhansen@...%20[hp_agilent_equipment]> To: hp_agilent_equipment@...<mailto:hp_agilent_equipment@...> Sent: Sunday, July 09, 2017 9:38 PM Subject: SV: [hp_agilent_equipment] E4406A Input Attenuator Tom Have sent the rf clip to tony--the pictures you are asking for are very easy to find on the internet Fra: hp_agilent_equipment@...<mailto:hp_agilent_equipment@...> [mailto:hp_agilent_equipment@...] Sendt: 10. juli 2017 00:07 Til: hp_agilent_equipment@...<mailto:hp_agilent_equipment@...> Emne: Re: [hp_agilent_equipment] E4406A Input Attenuator Can you get a few good pictures of the RF section and post them? Maybe we can identify how they did the attenuators. Some that I have seen used Gaas smt spdt RF switches for the attenuators. Later 8657 sig gens did this. Regards ----- Original Message ----- From: "Tony Goodhew tony_goodhew@... [hp_agilent_equipment]" <hp_agilent_equipment@...> To: <hp_agilent_equipment@...> Sent: Sunday, July 09, 2017 5:56 PM Subject: RE: [hp_agilent_equipment] E4406A Input Attenuator Thanks I took the unit apart, including opening up the A17 RF Assembly, and there didnt appear to be any mechanical relays in there. I couldnt find any information on the components closest to the RF input to identify any solid state relays or programmable attenuators. In checking around I saw that Agilent promised in 2014 to post the CLIPs for the E4406A but they dont seem to have followed through on that. Does anyone happen to have them and could send me the A17 one? Thanks, TonyG Sent from Mail<> for Windows 10 From: Artek Manuals manuals@... [hp_agilent_equipment]<mailto:hp_agilent_equipment@...> Sent: Sunday, July 9, 2017 11:36 AM To: hp_agilent_equipment@...<mailto:hp_agilent_equipment@yahoogroups .com> Subject: Re: [hp_agilent_equipment] E4406A Input Attenuator Sounds like you on the right track , If you lucky the relay is just stuck as you say and you might exercise your way out of it... could also have suffered from input overload ...a bit harder to fix On 7/9/2017 2:30 PM, tony_goodhew@...<mailto:tony_goodhew@...> [hp_agilent_equipment] wrote: Hi All, I just acquired an E4406A and put it on my bench. It seems to work fine except that it is consistently reading 15dB low. Poking around I found a control for the input attenuator and that seems to have no impact on the measured value. From there I looked at the services/test guide and ran through the 50MHz Input Attenuator Accuracy test and that showed no change so I think that the attenuator is stuck. Before I start pulling this apart I thought I might check in to see if I'm missed something in the system settings that might cause this? Thanks, TonyG -- Dave Manuals@...<mailto:Manuals@...> www.ArtekManuals.com<> [ ted-no-repeat-v1.gif]< m_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclien t&utm_term=oa-3176-b> Virus-free. www.avast.com< =email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_te rm=oa-3176-b> ------------------------------------ ------------------------------------ ------------------------------------ Yahoo Groups Links < paign=sig-email&utm_content=emailclient> Virusfri. < paign=sig-email&utm_content=emailclient> www.avg.com [Non-text portions of this message have been removed] [https://ipmcdn.avast.com/images/icons/icon-envelope-tick-green-avg-v1.png]<> Virusfri. www.avg.com<> [Non-text portions of this message have been removed] |
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Re: E4406A Input Attenuator
开云体育Yes But it completes selftest--so the faullt has to be between rf input connector and rf switch(used only for cal)- first mixer. The selftest checks frontend 听att 1 dB 听steps from 0-40 听with a 50Mhz signal . Hardy 听 听 Fra: hp_agilent_equipment@...
[mailto:hp_agilent_equipment@...] 听 听 It sure could be something else. Even a low LO to the mixer. 听 听
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Re: E4406A Input Attenuator
Tom Miller
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Yiu On Tony C