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Re: FS: AGILENT 33250A Function Generator AWG
Razvan
开云体育Didn't know about that group. Thanks. On 2018-10-11 7:18 PM, Dr. David Kirkby
from Kirkby Microwave Ltd wrote:
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Re: Is it reasonable (or normal) to charge extra to calibrate an essential accessory supplied with an instrument?
Dr. David Kirkby from Kirkby Microwave Ltd
On Thu, 11 Oct 2018 at 17:56, Dave_G0WBX via Groups.Io <g8kbvdave=[email protected]> wrote: The same applies with power meters.? If you send in a power meter with a I see power meters as quite different, as they are not supplied with a sensor. You buy what sensor you want. I see this as quite different. I will ask Keysight if they can give me a spec on the resistor. I don't feel I want to argue too much over this, as I don't want to **** them off too much. Long term, that is probably not a good idea. With Pete and his ECal, it is a very different matter, but calibration of a resistor is a bit less of an issue. ?
? Yes, I have seen similar. Recently someone was selling a calibrated 26.5 GHz 3.5 mm 85053B verification kit. Now I know those things can't be calibrated by joe public, so I asked how it was calibrated. To cut a long story short, this was calibrated using an 85032B 6 GHz N calibration kit! goldenrubi is an eBay seller that claims stuff he sells is calibrated, but if you send him a few messages, you realise he is an idiot.
? I know someone, who personally I would not trust to check a handheld DVM, that was recently working in Intel, "calibrating" 23 GHz Tektronix scopes and bit error rate testers!? The guy is a complete moron. I recently had a UK company write to me about their calibration services which was "UKAS traceable". Now I know what traceable to a standards lab is (NIST, NPL etc), and I know what UKAS acreddited means, but "UKAS traceable" is a new one on me. This is a good one. An "acreddited" cal lab in Mexico They are acreddited to measure frequency from 1 Hz to 40 MHz to 0.05%. The instrument they use is a 3458A, which is rated to measure frequency up to 10 MHz!!! Even Keysight (UK) can't supply uncertainties with the calibration of the 4285A. A calibration with uncertainties is available in the USA, but the cost is considerably higher than a standard (non-acredited, no uncertainties) Keysight calibration. I think I will settle with the standard calibration. It will fullfil my main aim, which is to determine if this instrument works properly, before I have lost the chance to send it back to the seller and say it is faulty.
-- Dr David Kirkby Ph.D C.Eng MIET Kirkby Microwave Ltd Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, CHELMSFORD, Essex, CM3 6DT, United Kingdom. Registered in England and Wales as company number 08914892 Tel 01621-680100 / +44 1621-680100 |
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Re: 8970B learnings
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On Oct 11, 2018, at 12:44 PM, pianovt via Groups.Io <pianovt@...> wrote:
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Re: Is it reasonable (or normal) to charge extra to calibrate an essential accessory supplied with an instrument?
Sadly David.
Perfectly reasonable.? As it takes time and resources to do that, hence runs up costs. They probably have their own known good "standard" resistors (etc) that they use to cal'/verify users (and their) instruments. But to "calibrate" (in truth verify and record) your part, as above it takes time and resources, said resources are likely to be better precision devices than your instrument too, then as a transfer standard, the "Calibration" should be meaningful. The fact that it is a "standard accessory" is neither hear or their.?? If it was a built in part, then yes, they should verify it as part of the main instrument cal', but not if it's a separate physical entity probably with its own identity (serial number or some-such.) The same applies with power meters.? If you send in a power meter with a head and lead, they will be calibrated separately.?? My gripe is that often they don't do a functional check after the cal', with the items you send them.? (We’ve had power meters returned that though the head and body worked OK, the lead was damaged (after it left us to go to them, so as a "system" it resulted in somewhat wayward un-callibrated readings.)?? (That was not Keysight by the way.) We've also had digital readout instruments "Calibrated" against what we know to be "moving coil meter" display instruments, and not even types with a mirror scale!? (Again, not Keysight.) The whole "Calibration Industry" is a bit of a farce, sadly.?? My personal view. Regards. Dave B (G0WBX) -- Created on and sent from a Unix like PC running and using free and open source software. :: |
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Re: 8970B learnings
Peter, that YTO was used in the first generation of the 8590A spectrum analyzers. Those were the ones with a free-running 1st LO. The YTO was not made by HP; it was purchased from a company called Microsource which is no longer making that sort of stuff (I think they were purchased by Gigatronics).
The YTO was 1 inch on the side ("1" cube"). It was a low cost design. I don't often see used ones around. Anyway, if you know someone who has an old 8590A parts box, that's the place to get it. Vladan |
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Re: Is it reasonable (or normal) to charge extra to calibrate an essential accessory supplied with an instrument?
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On Oct 11, 2018, at 12:34 PM, Pete Manfre <pmanfre@...> wrote:
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Re: Is it reasonable (or normal) to charge extra to calibrate an essential accessory supplied with an instrument?
Pete Manfre
How about this.? ?I have a service contract on my eCal.? ?Six months into the 1 yr. Contract I could no longer read it.? ?So I sent it in for repair.? ?They said that unit should not have been given a contract since it was no longer supported.? ?But they said they would be nice and refund the contract cost.? ?I escallated it and? finally they agreed to replaced it with the new model no charge.? ? Moral of the story… complain Doc!? ?It was sold with the unit as part of it!? Pete wa2odo? On Thu, Oct 11, 2018, 12:08 PM Dr. David Kirkby from Kirkby Microwave Ltd <drkirkby@...> wrote:
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Re: FS: AGILENT 33250A Function Generator AWG
Dr. David Kirkby from Kirkby Microwave Ltd
On Thu, 11 Oct 2018 at 16:39, 4X6MU via Groups.Io <ilan_4x6mu=[email protected]> wrote:
which is a group to buy/sell/swap test equipment.
Dr David Kirkby Ph.D C.Eng MIET Kirkby Microwave Ltd Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, CHELMSFORD, Essex, CM3 6DT, United Kingdom. Registered in England and Wales as company number 08914892 Tel 01621-680100 / +44 1621-680100 |
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Re: Is it reasonable (or normal) to charge extra to calibrate an essential accessory supplied with an instrument?
Dr. David Kirkby from Kirkby Microwave Ltd
On Thu, 11 Oct 2018 at 16:23, <bill.lauchlan171@...> wrote:
The resistor could be used with any 4285A. There's no S/N on the resistor, so its not in any way tied to a particular instrument. But every other 4285A should have its resistor too - that said, many 4285As on eBay are sold without the resistor. Dave -- Dr David Kirkby Ph.D C.Eng MIET Kirkby Microwave Ltd Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, CHELMSFORD, Essex, CM3 6DT, United Kingdom. Registered in England and Wales as company number 08914892 Tel 01621-680100 / +44 1621-680100 |
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Re: HP 141T sn:1850A 16959, hp: 8556A sn: 1907A 04190 and hp 8552B sn:1841B sn:1841A15130
George Fridrich
Can’t give the location, they are still throwing stuff out. :-)
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On Thursday, October 11, 2018, 10:48 AM, Daniel Koller via Groups.Io <kaboomdk@...> wrote:
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Re: Is it reasonable (or normal) to charge extra to calibrate an essential accessory supplied with an instrument?
开云体育There could be a case for treating it separately, if, once calibrated , it could be used with other 4285A instruments, so would need a separate cal certificate. At least administratively I think that would be the case. ? From: [email protected] [mailto:[email protected]] On Behalf Of Dr. David Kirkby from Kirkby Microwave Ltd
Sent: Thursday, October 11, 2018 11:10 AM To: [email protected] Subject: Re: [HP-Agilent-Keysight-equipment] Is it reasonable (or normal) to charge extra to calibrate an essential accessory supplied with an instrument? ? On Thu, 11 Oct 2018, 15:59 , <bill.lauchlan171@...> wrote:
? That's my opinion too, but Keysight want extra to calibrate it. ? Looking on the find-a-part website, the resistor is only used with the 4285A. I really can't see any justification for charging extra to calibrate the resistor.? ? Dave.? ? Dave.? |
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Re: Is it reasonable (or normal) to charge extra to calibrate an essential accessory supplied with an instrument?
Dr. David Kirkby from Kirkby Microwave Ltd
On Thu, 11 Oct 2018, 15:59 , <bill.lauchlan171@...> wrote:
That's my opinion too, but Keysight want extra to calibrate it. Looking on the find-a-part website, the resistor is only used with the 4285A. I really can't see any justification for charging extra to calibrate the resistor.? Dave.? Dave.? |
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Re: HP 141T sn:1850A 16959, hp: 8556A sn: 1907A 04190 and hp 8552B sn:1841B sn:1841A15130
开云体育Notice that he doesn't tell us where it is!?? :-)Daun On 10/11/2018 10:52 AM, bownes wrote:
--
Daun E. Yeagley II, N8ASB |
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Re: Is it reasonable (or normal) to charge extra to calibrate an essential accessory supplied with an instrument?
开云体育Never seen a clear policy on that. My feeling is if it’s essential to the operation of the Instrument, it should be included in the Instrument Calibration. If it’s an optional accessory then it should be separate . ? From: [email protected] [mailto:[email protected]] On Behalf Of Dr. David Kirkby from Kirkby Microwave Ltd
Sent: Thursday, October 11, 2018 6:32 AM To: [email protected] Subject: [HP-Agilent-Keysight-equipment] Is it reasonable (or normal) to charge extra to calibrate an essential accessory supplied with an instrument? ? The HP/Agilent 4285A LCR meter was supplied as standard with a 100-ohm resistor, P/N 04285-61001. It is a 4-terminal device with 4 BNC connectors on it. It is a furnished accessory, essential to use the 4285A properly, and is only used with the 4285A. (See photo from manual). ? I've sent the 4285A LCR meter to Keysight, but they want extra to calibrate the resistor. Does that seem reasonable, and/or normal practice? I don't know the specifications of the resistor, so can't calibrate it myself. Although I have a 6.5 digit multimeter, the RF properties of this resistor are probably important, as it is used to 30 MHz. -- Dr David Kirkby Ph.D C.Eng MIET |
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Re: HP 141T sn:1850A 16959, hp: 8556A sn: 1907A 04190 and hp 8552B sn:1841B sn:1841A15130
开云体育My university has a special place for these sorts of goodies. Worth walking past a few times a day. :) On Oct 11, 2018, at 10:48, Daniel Koller via Groups.Io <kaboomdk@...> wrote:
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Re: HP 141T sn:1850A 16959, hp: 8556A sn: 1907A 04190 and hp 8552B sn:1841B sn:1841A15130
Ok, this begs the questions:? Where?? What dumpster?? We can't help you until you tell us exactly where this dumpster is!? ;) And there are places that still throw things in dumpsters?? Every source I have ever acquired stuff from in the past has long since switched to "property management" for disposal.? I haven't had a cool dumpster find in 20 years. ? Dan
On Wednesday, October 10, 2018, 8:22:35 PM EDT, George Fridrich via Groups.Io <george.fridrich@...> wrote:
Just saved the 141T from the dumpster, powered unit up and got no initial signal on Scope, found 1/4 amp fuse open, put fuse in, brought unit up without modules in and fuse did not blow, inspected both 855 units, found 8552B had a burnt component smell, removed A7 board and found R7 burned badly! ?Q2,3,4,6,712 & 18 ?open ( not working). I down loaded some manuals, I want to check voltages before repairing the board, not sure where the voltage test points are on the 141T, drawings are not very good. I would like to find replacement transistors & were to find R7 131ohm 1% resistor 1/8 watt. I would like to bring it back to life, it is so well made, a work of art! Any help would be appreciated.
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Re: 8970B learnings
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On Oct 11, 2018, at 10:11 AM, Peter Gottlieb <hpnpilot@...> wrote:
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Re: 8970B learnings
开云体育Let’s see if a photo will make it:Peter On Oct 11, 2018, at 12:44 AM, pianovt via Groups.Io <pianovt@...> wrote:
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bownes
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