Re: 141T reference replacement..a cure??
These guys claim to have a Z82R10? available for $5.95. It might be a suitable replacement.
It might require a change in the series Resistor?? R21.
See the signalite application notes page 14
Bob
On Saturday, July 15, 2017 8:23 PM, "Jeremy Nichols jn6wfo@... [hp_agilent_equipment]" wrote:
?
There might be some NOS parts somewhere but neither Google nor eBay brings up anything for "Signalite 82R7."
Jeremy?
?
On 07/15/2017 05:00 PM, Bob Goodrich bobgoodrich84@...
[hp_agilent_equipment] wrote:
> Signalite 82R7
Wonder if it's still available. That was a l o n g time ago!
|
Re: 141T reference replacement..a cure??
There might be some NOS parts somewhere but neither Google nor eBay brings up anything for "Signalite 82R7."
Jeremy?
?
On 07/15/2017 05:00 PM, Bob Goodrich bobgoodrich84@...
[hp_agilent_equipment] wrote:
> Signalite 82R7
Wonder if it's still available. That was a l o n g time ago!
|
Re: Anybody got a good LCR meter that they want to sell?
On 07/15/2017 06:04 PM, Bob Albert
bob91343@... [hp_agilent_equipment] wrote:
?
I wasn't
comparing the units in detail.? For the vast majority of
measurements, the cheaper one is more than adequate.? I
am sure your extra money does buy some functionality but
for me, I have better instruments and only use the cheap
one for casual tests.
It's
great for identifying solid state components, such as
FETs and bipolars.? Measurements on common value
resistors and capacitors and inductors are accurate
enough for me, mostly.? A nice feature of these testers
is that it's 'quick and dirty' meaning you don't have to
be too careful, and you don't even have to know the kind
of component you are testing.? With my fancy bridge I
have to decide if it's R, L, or C, and it won't do solid
state parts.
After
all, it's only a few bucks, and money well spent.
Bob
On
Saturday, July 15, 2017 3:25 PM, "'Dr. David
Kirkby (Kirkby Microwave Ltd)'
drkirkby@...
[hp_agilent_equipment]"
wrote:
I've been reading this thread for a while, but I never saw the name
or model number of "the Hungarian one." Could someone please mention
it?
Thanx.--doug, WA2SAY
|
Re: 141T reference replacement..a cure??
On 07/15/2017 05:00 PM, Bob Goodrich bobgoodrich84@... [hp_agilent_equipment] wrote: Signalite 82R7 Wonder if it's still available. That was a l o n g time ago!
|
Re: Anybody got a good LCR meter that they want to sell?
On Sat, 15 Jul 2017, Bob Albert bob91343@... [hp_agilent_equipment] wrote: If you want something that measures actual values with good precision go buy DE-5000. Buy original one, from Japan. It is not $10 crap but it is not crap, it is a REAL instrument. With a proper case, properly calibrated at the factory, with warranty and so on. I have one myself for field trips and it is superior to anything you can get for such a price. It is well within stated tolerance out of the box -- I have a calibrated Quadtech (GenRad) 1693 DigiBridge so I can check. I wasn't comparing the units in detail.? For the vast majority of measurements, the cheaper one is more than adequate.? I am sure your extra money does buy some functionality but for me, I have better instruments and only use the cheap one for casual tests.
It's great for identifying solid state components, such as FETs and bipolars.? Measurements on common value resistors and capacitors and inductors are accurate enough for me, mostly.? A nice feature of these testers is that it's 'quick and dirty' meaning you don't have to be too careful, and you don't even have to know the kind of component you are testing.? With my fancy bridge I have to decide if it's R, L, or C, and it won't do solid state parts.
After all, it's only a few bucks, and money well spent.
Bob
On Saturday, July 15, 2017 3:25 PM, "'Dr. David Kirkby (Kirkby Microwave Ltd)' drkirkby@... [hp_agilent_equipment]" <hp_agilent_equipment@...> wrote:
#yiv7719345204 #yiv7719345204 -- #yiv7719345204 .yiv7719345204ygrp-photo-title{clear:both;font-size:smaller;min-height:15px;overflow:hidden;text-align:center;width:75px;}#yiv7719345204 div.yiv7719345204ygrp-photo{background-position:center;background-repeat:no-repeat;background-color:white;border:1px solid black;min-height:62px;width:62px;}#yiv7719345204 div.yiv7719345204photo-title a, #yiv7719345204 div.yiv7719345204photo-title a:active, #yiv7719345204 div.yiv7719345204photo-title a:hover, #yiv7719345204 div.yiv7719345204photo-title a:visited {text-decoration:none;}#yiv7719345204 div.yiv7719345204attach-table div.yiv7719345204attach-row {clear:both;}#yiv7719345204 div.yiv7719345204attach-table div.yiv7719345204attach-row div {float:left;}#yiv7719345204 p {clear:both;padding:15px 0 3px 0;overflow:hidden;}#yiv7719345204 div.yiv7719345204ygrp-file {width:30px;}#yiv7719345204 div.yiv7719345204attach-table div.yiv7719345204attach-row div div a {text-decoration:none;}#yiv771934! 5204 div.yiv7719345204attach-table div.yiv7719345204attach-row div div span {font-weight:normal;}#yiv7719345204 div.yiv7719345204ygrp-file-title {font-weight:bold;}#yiv7719345204 #yiv7719345204 #yiv7719345204 #yiv7719345204 --#yiv7719345204ygrp-mkp {border:1px solid #d8d8d8;font-family:Arial;margin:10px 0;padding:0 10px;}#yiv7719345204 #yiv7719345204ygrp-mkp hr {border:1px solid #d8d8d8;}#yiv7719345204 #yiv7719345204ygrp-mkp #yiv7719345204hd {color:#628c2a;font-size:85%;font-weight:700;line-height:122%;margin:10px 0;}#yiv7719345204 #yiv7719345204ygrp-mkp #yiv7719345204ads {margin-bottom:10px;}#yiv7719345204 #yiv7719345204ygrp-mkp .yiv7719345204ad {padding:0 0;}#yiv7719345204 #yiv7719345204ygrp-mkp .yiv7719345204ad p {margin:0;}#yiv7719345204 #yiv7719345204ygrp-mkp .yiv7719345204ad a {color:#0000ff;text-decoration:none;}#yiv7719345204
On 15 July 2017 at 16:37, Bob Albert bob91343@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
That is a good unit for not too demanding applications.? However, it's available on ebay for a lot less money.? In some cases, less than $10 shipped.
I have a similar one and use it a lot.
Bob
Are you saying that the Hungarian $55 one can be had on eBay for $10? I don't think so. The Hungarian one seems to be well thought out in design, whereas none of the other cheap one seem to be.
The Hungarian one use 4-wire sending, which few on eBay do unless you pay lots of money.
Dave
--- * * KSI@home KOI8 Net < > The impossible we do immediately. * * Las Vegas NV, USA < > Miracles require 24-hour notice. * * [Non-text portions of this message have been removed]
|
Re: Anybody got a good LCR meter that they want to sell?
I wasn't comparing the units in detail.? For the vast majority of measurements, the cheaper one is more than adequate.? I am sure your extra money does buy some functionality but for me, I have better instruments and only use the cheap one for casual tests.
It's great for identifying solid state components, such as FETs and bipolars.? Measurements on common value resistors and capacitors and inductors are accurate enough for me, mostly.? A nice feature of these testers is that it's 'quick and dirty' meaning you don't have to be too careful, and you don't even have to know the kind of component you are testing.? With my fancy bridge I have to decide if it's R, L, or C, and it won't do solid state parts.
After all, it's only a few bucks, and money well spent.
Bob
On Saturday, July 15, 2017 3:25 PM, "'Dr. David Kirkby (Kirkby Microwave Ltd)' drkirkby@... [hp_agilent_equipment]" wrote:
|
Re: 141T reference replacement..a cure??
Below is a link to a Signalite application note pamphlet.. Page 14 has the Z series of VR tubes.
www.philbrickarchive.org/jlrmsousa/signalite_glow_lamps.pdf
Bob
On Saturday, July 15, 2017 1:44 PM, "Chuck Harris cfharris@... [hp_agilent_equipment]" wrote:
?
Ok, good question.
This thread is nominally about the voltage reference in
the 141T, older models, that was a gas regulator tube,
that looked like an oversized NE2.
It has been a very long time since I abandoned the 141T
series as being useful, but I recall the problematic gas
reference tube that looks like a large NE2. Others that
I respect have informed during this thread that they are
89V.
Do you know differently?
Since 87V is neither the 67V nor the 89V that I mentioned,
you could be talking about the NE2's ionization voltage,
I am not sure...
That is even older information I got from my dad, back
when I was a teenager, some nearly 50 years ago. I have
seen 90V strike, and 67V ionization as the nominal values
for the NE2 many times over the years. But I never would
use one as a reference, so its exact value is unimportant
to me.
-Chuck Harris
ken chalfant kpchalfant@... [hp_agilent_equipment] wrote:
> Hi Chuck,
>
> Without any disrespect or challenge intended…
>
> How, sir, do you know these ionize around 87 volts?
>
> Thank you.
>
> Regards,
>
> Ken
>
>
> On 15Jul, 2017, at 7:20 AM, Chuck Harris cfharris@... [hp_agilent_equipment] > wrote:
>
>
> They aren't NE2's. NE2's run at about 67V, these run at about 89V.
>
> -Chuck Harris
>
> Scott McGrath scott@... [hp_agilent_equipment] wrote:
>> Just visit Amazon 10 NE-2's for 8 bucks problem solved
>>
>> https://www.amazon.com/A3C-NE2-U-Bulbs-105-125-Terminals/dp/B00ZSPLRVS
|
Re: Anybody got a good LCR meter that they want to sell?
Dr. David Kirkby (Kirkby Microwave Ltd)
|
Re: 141T reference replacement..a cure??
A number of my antiques use neon bulbs as voltage references; it seems to be common in HP (and other?) instruments of that era. I too have read about (and experienced) SA plug-in fuses blowing because of an aged neon that did not strike at the proper voltage (so it was said). From my manuals I have the following:
143A Oscilloscope (large CRT, otherwise same as 140A): the +100V supply uses a neon rated in the schematic and parts list at "82.0V +/- 1.0V" (part #1940-0013). No "NE-number" is provided in parts list or schematic.
132A Dual Beam Osilloscope uses an NE86 in the control amplifier of the high-voltage power supply's regulator circuitry. The oscilloscope circuitry itself is full of NE2's (2140-0084) and NE86's (2140-0055). No voltage rating is provided in the manual.?
175A Oscilloscope uses NE-2's (2140-0008) throughout the circuitry. Most of them are placed between the grids and cathodes of vacuum tubes used as amplifiers and (especially) cathode followers. The low-voltage power supply uses no neons but rather a 5651 (vacuum tube-shaped) gas-discharge tube rated at 87 volts. Similar in operation to a neon, I suppose, but larger, easier to replace, perhaps longer-lasting and more reliable, and certainly more expensive.
Interesting that HP uses NE-2's under two different part numbers (2140-0008 and 0084). My manuals do not provide solid data on the strike or operating voltages of these neons. None are explicitly marked as "selected" or "special."?
Jeremy
?
Ok, good question.
This thread is nominally about the voltage reference in
the 141T, older models, that was a gas regulator tube,
that looked like an oversized NE2.
It has been a very long time since I abandoned the 141T
series as being useful, but I recall the problematic gas
reference tube that looks like a large NE2. Others that
I respect have informed during this thread that they are
89V.
Do you know differently?
Since 87V is neither the 67V nor the 89V that I mentioned,
you could be talking about the NE2's ionization voltage,
I am not sure...
That is even older information I got from my dad, back
when I was a teenager, some nearly 50 years ago. I have
seen 90V strike, and 67V ionization as the nominal values
for the NE2 many times over the years. But I never would
use one as a reference, so its exact value is unimportant
to me.
-Chuck Harris
ken chalfant kpchalfant@... [hp_agilent_equipment] wrote:
> Hi Chuck,
>
> Without any disrespect or challenge intended…
>
> How, sir, do you know these ionize around 87 volts?
>
> Thank you.
>
> Regards,
>
> Ken
>
>
> On 15Jul, 2017, at 7:20 AM, Chuck Harris cfharris@...cfharris@...> [hp_agilent_equipment] <hp_agilent_equipment@...hp_agilent_equipment@...>> wrote:
>
>
> They aren't NE2's. NE2's run at about 67V, these run at about 89V.
>
> -Chuck Harris
>
> Scott McGrath scott@...scott@...> [hp_agilent_equipment] wrote:
>> Just visit Amazon 10 NE-2's for 8 bucks problem solved
>>
>>
|
Re: 141T reference replacement..a cure??
My 141T has a Z82R7? reference tube in it.? As of 8/21/14 the voltage across the VR tube was measured at 83.6 instead of 82.7 V.
I had to shunt R26? 22.1K with 220K in order to? in order to be able to adjust the +100 Volt supply to 100V. Still working today.
The link below to Radio-Electronics magazine May 1965 has a brief reference to the Signalite 82R7 VR tube.?
See page 65
Bob
On Saturday, July 15, 2017 1:44 PM, "Chuck Harris cfharris@... [hp_agilent_equipment]" wrote:
?
Ok, good question.
This thread is nominally about the voltage reference in
the 141T, older models, that was a gas regulator tube,
that looked like an oversized NE2.
It has been a very long time since I abandoned the 141T
series as being useful, but I recall the problematic gas
reference tube that looks like a large NE2. Others that
I respect have informed during this thread that they are
89V.
Do you know differently?
Since 87V is neither the 67V nor the 89V that I mentioned,
you could be talking about the NE2's ionization voltage,
I am not sure...
That is even older information I got from my dad, back
when I was a teenager, some nearly 50 years ago. I have
seen 90V strike, and 67V ionization as the nominal values
for the NE2 many times over the years. But I never would
use one as a reference, so its exact value is unimportant
to me.
-Chuck Harris
ken chalfant kpchalfant@... [hp_agilent_equipment] wrote:
> Hi Chuck,
>
> Without any disrespect or challenge intended…
>
> How, sir, do you know these ionize around 87 volts?
>
> Thank you.
>
> Regards,
>
> Ken
>
>
> On 15Jul, 2017, at 7:20 AM, Chuck Harris cfharris@...<mailto:cfharris@...> [hp_agilent_equipment] > wrote:
>
>
> They aren't NE2's. NE2's run at about 67V, these run at about 89V.
>
> -Chuck Harris
>
> Scott McGrath scott@... [hp_agilent_equipment] wrote:
>> Just visit Amazon 10 NE-2's for 8 bucks problem solved
>>
>> https://www.amazon.com/A3C-NE2-U-Bulbs-105-125-Terminals/dp/B00ZSPLRVS
|
Re: HP 8566B / 8568B bus interconnect cable
Donald, Have you opened the connectors and inspected the connections on the 60220 cable?? From my experience this cable should also work with you 8566B.
-rastro
On Saturday, July 15, 2017 9:54 AM, "donald_s_58103@... [hp_agilent_equipment]" wrote:
?
The check instrument I ?red LED stays on after power-up and the display stays blank. After swapping the cables from one instrument to the other, I have found that the 60220 only works with my 8568B and not the 8566B and the 60094 only works with my 8566B and not the 8568B. WEIRD! (I am using the same IF/Display unit for both instruments).
|
Re: 141T reference replacement..a cure??
Ok, good question.
This thread is nominally about the voltage reference in
the 141T, older models, that was a gas regulator tube,
that looked like an oversized NE2.
It has been a very long time since I abandoned the 141T
series as being useful, but I recall the problematic gas
reference tube that looks like a large NE2. Others that
I respect have informed during this thread that they are
89V.
Do you know differently?
Since 87V is neither the 67V nor the 89V that I mentioned,
you could be talking about the NE2's ionization voltage,
I am not sure...
That is even older information I got from my dad, back
when I was a teenager, some nearly 50 years ago. I have
seen 90V strike, and 67V ionization as the nominal values
for the NE2 many times over the years. But I never would
use one as a reference, so its exact value is unimportant
to me.
-Chuck Harris
ken chalfant kpchalfant@... [hp_agilent_equipment] wrote:
toggle quoted message
Show quoted text
Hi Chuck,
Without any disrespect or challenge intended…
How, sir, do you know these ionize around 87 volts?
Thank you.
Regards,
Ken
On 15Jul, 2017, at 7:20 AM, Chuck Harris cfharris@...<mailto:cfharris@...> [hp_agilent_equipment] <hp_agilent_equipment@...<mailto:hp_agilent_equipment@...>> wrote:
They aren't NE2's. NE2's run at about 67V, these run at about 89V.
-Chuck Harris
Scott McGrath scott@...<mailto:scott@...> [hp_agilent_equipment] wrote:
Just visit Amazon 10 NE-2's for 8 bucks problem solved
|
hi cliff second mail..10 ghz info......today have had over 50 mails for yahoo groups,,,,none to do with my request..so will mail them again tomorrow,,, to stop.....
right 10 ghz ...GB3FY..located at farmer parrs? fleetwood,,,not got the locator handy......its out put? is 10.240ghz...tx input ..10.425.ghz .......... test card shows gb3fy,,,and amiddle signal bar,,,with id numbers underneath,,,when signal strenght improves....if a carier,,no video is sent...... a red bar goes accross screen,,,,also denotes strenght,,,,if a signal tx,,10.425 is sent with video on..the bar will indicate strenght,,,in green...... and nunber under the strenght......every 10 mins the ident signal changes for test card id,,to colour information..and sound channel info..for talk back...unfortunatly i think the tx and rx mast is too low,,as i have two hill in front of me ,,bourne hill ..then the golf links on fleetwood road,,, then the hill at warbreck..so a blockage south...!!!!!fartest we have seen is I.O.M. at 2000 ft,,up..and wales 1000 ft up..p3 to p4 pics,,audio..... difficult over distance,,,also a new? repeater is on air,,at warbreck hill...1.3ghz? at mo..1249 actuall..digital and analogue?? not on at all times,,, call sign,,,GB3FT......IF BOTH ARE?? QRZ on net info will come up..gb3ft need dtmf codes,,,which are avail to atv guys,,via tim,,,at freckleton,, or steve at warbreck...cant give much more info....we have probs receiving welsh and signals south of here,,cannot get gb3ud,,,at mow cop... in cheshire,,above 1000 ft we can usually get,,,!!!so manchest er may be a prob..unless high up...ok on twt.s..wow..i get severheadaches with 10 mw..at 10 ghz,,so leaving off 10 at mo...hope inf o help full...will let you know how i go on.....many thanks,,,your friend ,,can have my e mail add
if he ned s any questions answered,,,,,,,byeeee40 watts into a 32 db ...10 ghz dish,,,wow...4kw out erp....!!!!!guessing.....but will kep away.
bob.ocall
From: "Cliff Barber g4bgp@... [hp_agilent_equipment]"
To: "hp_agilent_equipment@..."
Sent: Tuesday, 11 July 2017, 11:49
Subject: Re: [hp_agilent_equipment] ifr 2390 analyser
?
Hello Bob, Please call me on either landline or mobile. Tnx Cliff G4BGP On Tue, 11 Jul 2017 at 10:57, Bob Ocallaghan bob.g1epl@... [hp_agilent_equipment] wrote:
?
hi am looking for software to operate a marconi ifr spec anl..model 2390...and info on applying to analyser,or where i can get? installed..many thanks bob..uk.
|
Re: Anybody got a good LCR meter that they want to sell?
Take a look here. I have had good luck with a couple of
their testers. I bought this one but I bought it assembled
but could not find that here. It is accurate and cheap etc.
itance-ESR-Resistor-Mosfet-M168-p-953264.html?rmmds=search
Good luck.
Dan, W8KMX
|
Re: HP 8566B / 8568B bus interconnect cable
Verify your internal cable connections and contacts on both the cable end connectors and your instrument connectors. Over the years things take only so much abuse. I have had several units with both cable and connector problems. Your cables should work on either unit unless someone boogered them up for some reason.
Dennis
--------------------------------------------
toggle quoted message
Show quoted text
On Sat, 7/15/17, donald_s_58103@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
Subject: [hp_agilent_equipment] Re: HP 8566B / 8568B bus interconnect cable
To: hp_agilent_equipment@...
Date: Saturday, July 15, 2017, 10:54 AM
#yiv0537900027 #yiv0537900027 --
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#yiv0537900027
The check instrument I ?red LED stays on after power-up and
the display stays blank. After swapping the cables from one
instrument to the other, I have found that the 60220 only
works with my 8568B and not the 8566B and the 60094 only
works with my 8566B and not the 8568B. WEIRD! (I am using
the same IF/Display unit for both instruments).
|
Re: Anybody got a good LCR meter that they want to sell?
That is a good unit for not too demanding applications.? However, it's available on ebay for a lot less money.? In some cases, less than $10 shipped.
I have a similar one and use it a lot.
Bob
On Saturday, July 15, 2017 8:06 AM, "ssc ssc@... [hp_agilent_equipment]" wrote:
There might be on here?
Mitch
On 2017-07-14 23:46, 'Dr. David Kirkby
(Kirkby Microwave Ltd)' drkirkby@...
[hp_agilent_equipment] wrote:
?
On 15 Jul 2017 04:56, " dan-meeks@...
[hp_agilent_equipment]" < hp_agilent_equipment@...>
wrote:
>
> Asking for a friend. Wait, not really. A friend did
ask but if there is a good HP out there I may buy it and
try to sell him my Leader meter.
>
> If anyone has a good LCR meter that they'd consider
selling, even if it may need some TLC, please reply
off-list.
>
> Thanks in advance -
>
> Dan You really need to decide what frequency range
you want.
If looking at HP, you might want to consider
'impedance analysers' too.? HP seems in have this
convention that impedance analysers can sweep a frequency
range,? whereas LCR meters work at discrete frequencies.?
My 4284A precision LCR meter measures at more
than 8000 discreet frequencies from 20 Hz to 1 MHz. But
the frequencies were either chosen by a disgruntled
employee or mentality retarded intern!
Thrre is 20 Hz, and another around 20.01 Hz,
but nothing between 750 kHz and 1 MHz. At low frequencies
the steps are ridiculously close together,? whereas at
high frequencies they are really widely spaced.?
One of the problems with HP LCR meters is the
fixtures cost a fortune.? I decided to buy a new 16047A
axial/radial fixture from Keysight, as the cost was lower
than incomplete used ones on eBay!
There's someone in Hungary selling a low cost
($50 or so) LCR meter that uses an autobalancing bridge
and 4-wire Kelvin connections. This is very similar to the
HP/Agilent/Keysight meters. Unlike other low cost meters,
it doesn't have a switch to select L, C or R, but measures
the true impedance.? I will find a link to the website if
you want it. If it was not for the fact that I have the
4284A, I would buy one.
Dr David Kirkby
Managing Director
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd,
Chelmsford, Essex, CM3 6DT, United Kingdom
Registered in England and Wales as company number 08914892
Tel 01621'680100 / +44 1621-680100
|
Re: Anybody got a good LCR meter that they want to sell?
There might be on here?
Mitch
On 2017-07-14 23:46, 'Dr. David Kirkby
(Kirkby Microwave Ltd)' drkirkby@...
[hp_agilent_equipment] wrote:
toggle quoted message
Show quoted text
?
On 15 Jul 2017 04:56, "dan-meeks@...
[hp_agilent_equipment]" <hp_agilent_equipment@...>
wrote:
>
> Asking for a friend. Wait, not really. A friend did
ask but if there is a good HP out there I may buy it and
try to sell him my Leader meter.
>
> If anyone has a good LCR meter that they'd consider
selling, even if it may need some TLC, please reply
off-list.
>
> Thanks in advance -
>
> Dan
You really need to decide what frequency range
you want.
If looking at HP, you might want to consider
'impedance analysers' too.? HP seems in have this
convention that impedance analysers can sweep a frequency
range,? whereas LCR meters work at discrete frequencies.?
My 4284A precision LCR meter measures at more
than 8000 discreet frequencies from 20 Hz to 1 MHz. But
the frequencies were either chosen by a disgruntled
employee or mentality retarded intern!
Thrre is 20 Hz, and another around 20.01 Hz,
but nothing between 750 kHz and 1 MHz. At low frequencies
the steps are ridiculously close together,? whereas at
high frequencies they are really widely spaced.?
One of the problems with HP LCR meters is the
fixtures cost a fortune.? I decided to buy a new 16047A
axial/radial fixture from Keysight, as the cost was lower
than incomplete used ones on eBay!
There's someone in Hungary selling a low cost
($50 or so) LCR meter that uses an autobalancing bridge
and 4-wire Kelvin connections. This is very similar to the
HP/Agilent/Keysight meters. Unlike other low cost meters,
it doesn't have a switch to select L, C or R, but measures
the true impedance.? I will find a link to the website if
you want it. If it was not for the fact that I have the
4284A, I would buy one.
Dr David Kirkby
Managing Director
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd,
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 8566B / 8568B bus interconnect cable
The check instrument I ?red LED stays on after power-up and the display stays blank. After swapping the cables from one instrument to the other, I have found that the 60220 only works with my 8568B and not the 8566B and the 60094 only works with my 8566B and not the 8568B. WEIRD! (I am using the same IF/Display unit for both instruments).
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Re: 141T reference replacement..a cure??
Hi Chuck,
Without any disrespect or challenge intended…
How, sir, do you know these ionize around 87 volts?
Thank you.
Regards,
Ken
toggle quoted message
Show quoted text
They aren't NE2's. NE2's run at about 67V, these run at about 89V.
-Chuck Harris
Scott McGrath?scott@...?[hp_agilent_equipment] wrote:
> Just visit Amazon 10 NE-2's for 8 bucks problem solved
>?
>?
>?
>?
>?
|
Re: 141T reference replacement..a cure??
They aren't NE2's. NE2's run at about 67V, these run at about 89V.
-Chuck Harris
Scott McGrath scott@... [hp_agilent_equipment] wrote:
toggle quoted message
Show quoted text
Just visit Amazon 10 NE-2's for 8 bucks problem solved
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Jeremy Nichols
Sergey Kubushyn