Date   

Tek 2465B Service Manual S/n above 50000

mervynashton <mervynashton@...>
 

Hi to all!
I am looking for a service manual that covers the later Tektronix
2465B models serial number B050000 and above. I have a copy of the
manual that covers the older models.
This is to replace a copy that must have been accidently
dumped....Sob!
Can anybody put me in the right direction??

I expect to pay for the information or copy.

Best wishes to you all.

Mervyn


Re: Connectors, adaptors etc

Richard W. Solomon <w1ksz@...>
 

I find BAProducts.com to have a better selection and much better prices.

73, Dick, W1KSZ

ps: one good plug deserves another !!

-----Original Message-----
From: Craig Sawyers [mailto:c.sawyers@tech-enterprise.com]
Sent: Saturday, August 07, 2004 6:36 AM
To: TekScopes
Subject: [TekScopes] Connectors, adaptors etc


Let's just put it this way: any cable that can be terminated with
BNC or SMA
would give way long before connector becomes limiting item in
that assembly.
Incidentally, an eBay seller called testparts sells rf adaptors at pretty
decent prices. Just as an example, item 5714013511 is for five items, BNC
T, BNC-RCA, and three BNC-SMA at $19.95 on buy it now, or item 5714013497 is
four N-SMA adaptors for $15.

For some reason I have this guy's store in my favourites, so I must have
bought something from him at some stage.

Craig





Yahoo! Groups Links


Re: 453A

Don Black <jeans@...>
 

Oh... No, I'm not one of those ;-). Never cleaned a canon in my life.
Don Black.


Rolynn PRECHTL K7DFW wrote:

it's not in any lesser dictionary that I am aware of.


http://www.webster-dictionary.org/definition/merkin



K7DFW




Yahoo! Groups Links








Re: RF Connectors / Looking for N f-m adapter

maddisassembler
 

August 7th, 2004


Hello all,

very interesting posting from Brooke
especially on 'connector savers'.

This reminds me of my problem to
find a N-type male-female adapter
as a 'connector saver' for e.g.
expensive signal generators.

I know EMC-labs where equipment
with N-female outlets is used
so frequently with many daily
'screw-on/screw-off' cycles that
the equipment connector wears out
very quickly.

So far I could only find N male-male
or N female-female adapters so I first
have to screw N-f and N-m together to
get my connector saver.

Best regards
-Roland



--- In TekScopes@yahoogroups.com, Brooke Clarke <brooke@p...> wrote:
Hi:

Most of my career was spent in microwave engineering and 90+% of
that
with components using coax connectors.

The SMA connectors were designed to work with semirigid 0.141"
diameter
coax and used the coax center conductor for the male pin, so a
cable was
made up using a couple of male nuts whose shell was soldered onto
the
copper coax shield. The intent of this connector was that you
would
build up a system and then leave it alone. i.e. they are specified
for
a very small number of matings.

This was a problem later when we were making satellite hardware. I
often said that we supplied the hardware free, and only charged the
customer 1$ per page for the test data, which then was shipped in
cardboard boxes. The solution was to use "connector savers" which
is an
adapter SMA-m to SMA-f. A record was kept on each data sheet of
every
mating and after some number the connector saver was replaced. The
connector saver was rated for many more matings than was the base
connector.


Re: Digest Number 1190

Don Black <jeans@...>
 

I believe SMA connectors are rated to 18 G Hz.
Don Black.

phila_renewal wrote:

Oops -- a little more poking around and I see I got things
completely mixed up. N is spec'd. to 11 GHz; BNC to only 4. It's
the BNC that has the inherent low pass -- the N has "worse"
impedance matching due to the uncompensated inductance, but doesn't
have the low pass LC filter characteristics of the BNC (?).

So, in sum, BNC has better impedance matching to 4 GHz than the N,
but the BNC has the inherent LC low pass so things start to roll off
above 4 GHz with the BNC -- is that right? That being the case,
specify BNC or TNC for stuff below 4 GHz, and N above that?

Now, to add to the mix, what about the SMA?

Thanks again,
-Keith




--- In TekScopes@yahoogroups.com, Brooke Clarke <brooke@p...> wrote:


Hi Keith:

I think your data is wrong. The 50 Ohm N, BNC and TNC connectors

all


have identical I.D. and mating pins and sockets, the only

difference


between them is how they mechanically connect. If you hacksaw the
nut/connector from a male connector then you can plug it into any

of the


female connectors.

When H.P. introduced the first microwave network analyzer (8410) I

went


to an all day sales pitch and one of the demos was measuring the S
parameters of a 3 foot length of BNC cable to 12 GHz, and it

looked very


good.

A number of the HP network analyzers use a precision N connector

that's


rated to 18 GHz. Above 18 GHz, no matter how well made the

connector


you can get moding and so for higher frequencies you need to go to
smaller and smaller I.D. connectors.

Also the N connector is used because of it's mechanical strength

so hold


small test sets to the front of the instrument.

Have Fun,

Brooke Clarke, N6GCE

--
http://www.PRC68.com
http://www.pacificsites.com/~brooke/PRC68COM.shtml






Yahoo! Groups Links








Connectors, adaptors etc

Craig Sawyers <c.sawyers@...>
 

Let's just put it this way: any cable that can be terminated with
BNC or SMA
would give way long before connector becomes limiting item in
that assembly.
Incidentally, an eBay seller called testparts sells rf adaptors at pretty
decent prices. Just as an example, item 5714013511 is for five items, BNC
T, BNC-RCA, and three BNC-SMA at $19.95 on buy it now, or item 5714013497 is
four N-SMA adaptors for $15.

For some reason I have this guy's store in my favourites, so I must have
bought something from him at some stage.

Craig


Re: Digest Number 1190

Miroslav Pokorni
 

----- Original Message -----
From: "Craig Sawyers" <c.sawyers@tech-enterprise.com>
To: "TekScopes" <TekScopes@yahoogroups.com>
Sent: Friday, August 06, 2004 1:33 AM
Subject: RE: [TekScopes] Re: Digest Number 1190

There is also something called the corrugated type N, which is specified
in
terms of return loss. These numbers can be converted into VSWR, giving:

1-2GHz - 1.04
2-3GHz - 1.08

which is pretty darned good.
Pretty darn good if you are not a guy who does the handling of that
corrugated 'cable'.


Another factor here is the power handling of the connectors. The
corrugated
type N can handle 10kW peaks and 600W continuous; this isn't specified for
the BNC and SMA, but it is a fair assumption that they won't get anywhere
near that sort of power.
Let's just put it this way: any cable that can be terminated with BNC or SMA
would give way long before connector becomes limiting item in that assembly.

Regards

Miroslav Pokorni


Re: RF Connectors

Miroslav Pokorni
 

----- Original Message -----
From: "Brooke Clarke" <brooke@pacific.net>
To: <TekScopes@yahoogroups.com>
Sent: Friday, August 06, 2004 8:12 AM
Subject: [TekScopes] RF Connectors

The solution was to use "connector savers" which is an
adapter SMA-m to SMA-f. A record was kept on each data sheet of every
mating and after some number the connector saver was replaced. The
connector saver was rated for many more matings than was the base
connector.

Those 'connector savers' are also frequently used on instruments. I have
them on my S-52 and S6. What is their life (in mating cycles).

If you happen to still remember that, tell us how many mating cycles make a
life of an SMA connector which uses semi-rigid cable.

Regards

Miroslav Pokorni


Re: 453A

Dave Brown <tractorb@...>
 

Thanks for the heads up- obviously Websters is not a lesser dictionary!
To bring this back on topic-(well- sort of) they don't list tektronix, but
they do list tek.
I note the 1913 date though.
Cheers
DaveB, ZL3FJ

----- Original Message -----
From: "Rolynn PRECHTL K7DFW" <k7dfw@clatskanie.com>
To: <TekScopes@yahoogroups.com>
Sent: Saturday, August 07, 2004 10:27 AM
Subject: Re: [TekScopes] 453A



it's not in any lesser dictionary that I am aware of.

http://www.webster-dictionary.org/definition/merkin



K7DFW


Re: 453A

ROLYNN PRECHTL K7DFW
 

it's not in any lesser dictionary that I am aware of.

http://www.webster-dictionary.org/definition/merkin



K7DFW


Re: 453A

Dave Brown <tractorb@...>
 

Don-
No- you are not a merkin--not physically possible-but you could be the
subject of a derogatory remark from someone using the slang meaning of the
word. If you really want to know it's correct meaning (and maybe you
don't!) look the word up in the Shorter Oxford (big two volume set often
found in libraries)-it's not in any lesser dictionary that I am aware of.

Cheers
DaveB
Christchurch, NZ

----- Original Message -----
From: "Don Black" <jeans@nex.net.au>
To: "John Crighton" <john_c@tpg.com.au>
Cc: <TekScopes@yahoogroups.com>; "VK4ACB" <vk4acb@bigpond.com.au>
Sent: Saturday, August 07, 2004 3:15 AM
Subject: Re: [TekScopes] 453A


Hey, I'm confused! What's a Merkin? But then I'm from Vic., perhaps it's
a Northern thing (horrible thought - perhaps I'm a Merkin???).
Don Black.

John Crighton wrote:

I am finally getting to repair my 453A, ser no B147595, when I bought
the
scope I was told it had a problem in the timebase, it was working "in a
fashion", after I received the unit I discovered the cooling fan was
completely missing, motor, fan, filter and hardware.

When I switched on the 453A to begin work on it the horizontal sweep had
totally died, I just had vertical signal evident, the fault proved to be
both R833 and R843 in the emitter circuit of Q834 and Q844, the
paraphase
amplifier of the horizontal amplifier circuit, both resistors had gone
either open or very high resistance, I was not the first person to have

done


work in this area because R843 had obviously been replaced before, the

scope


came good much to my relief.

A strange pungent odor was always evident whenever the scope was turned

on,


the only thing out of place I could detect was on the Z axis board where

the


circuit board underneath R1043, R1044 had a brown/not quite burnt look
to
it, with the scope now working normally voltage checks showed that R1043

was


dissipating 2 watts and was certainly hot to the touch, it is a 3 watt

rated


resistor so I figured that it must be within limits, my question, is
discolouring of this nature normal on this board?

One reason for the damage may be because of operation by previous owner
of
the scope without the fan? my obvious next step is to obtain all the
necessary bits to keep things cool, from the parts list in the handbook

that


I have managed to obtain, I need the following for my serial number
scope:

p/no 147-0033-01 motor fan
211-0158-00 3 screws 4-40x0.25 inch PHS
131-0759-00 1 terminal lug
337-1505-00 1 shield for fan motor
369-0025-00 1 impeller fan
213-0126-00 1 set screw 6-32x0.25 inch HSS
407-0308-02 1 bracket fan motor & mounting hardware
211-0012-00 3 screws 4-40x0.375 inch PHS
210-0851-00 6 washers
220-0471-00 3 nuts stepped round 4-40x0.217 inch long
380-0082-00 1 housing fan filter

Can anyone help?

Wade VK4ACB


Hello Wade,
I can help you. Not long ago, Denis Cobley gave me a partly
cannibalised carcass to help keep my 454 going into the future.
Denis's parting words to me were, "Keep the Faith."
Let me help you to keep the faith also. :-)
Denis kindly gave me the carcass for free, therefore you
may also have the fan and bits for free. Contact me direct,
off the list. I responded to you on the list to let others
know to stop looking for parts as there is a good chance
of a result for you. I haven't removed any bits yet so I
don't know the condition of them.
Regards
John Crighton
Hornsby Heights
New South Wales (that'll confuse the merkins) ;-)






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Re: tek 536 scope

Dave Wise
 

The 536 is not related to the 535 except it's a member
of the same family. The 535, like most scopes, is meant
for displaying amplitude with respect to time. The 536
can do that too, but it's optimized for displaying an
amplitude in each axis; this is known as "X-Y" mode.
The vertical and horizontal amplifiers are designed to
have equal delay, so signals which start out in-phase
are still in-phase at the CRT deflection plates. (Most
scopes have an X-Y mode, but without this fine control
over phase.) It has no timebase. It takes two plugins,
which would be the same type if you are doing X-Y work,
or one (typically the X) would be a type T timebase,
which converts the 536 into an ordinary X-T scope.

Dave Wise

-----Original Message-----
From: Eeyoremrd@aol.com [mailto:Eeyoremrd@aol.com]
Sent: Friday, August 06, 2004 2:51 PM
To: TekScopes@yahoogroups.com
Subject: [TekScopes] tek 536 scope


hi all,

i have what i think is a boat anchor, and bama doesn't seem
to have the
correct manual/schematics. a tek 536. is it (besides
numerically) close cousin to a
535? or is this a whole nother animal? pointers to help would
be welcome.

don


[Non-text portions of this message have been removed]



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tek 536 scope

eeyoremrd
 

hi all,

i have what i think is a boat anchor, and bama doesn't seem to have the
correct manual/schematics. a tek 536. is it (besides numerically) close cousin to a
535? or is this a whole nother animal? pointers to help would be welcome.

don


Re: 453A

Don Black <jeans@...>
 

Hey, I'm confused! What's a Merkin? But then I'm from Vic., perhaps it's
a Northern thing (horrible thought - perhaps I'm a Merkin???).
Don Black.

John Crighton wrote:

I am finally getting to repair my 453A, ser no B147595, when I bought the
scope I was told it had a problem in the timebase, it was working "in a
fashion", after I received the unit I discovered the cooling fan was
completely missing, motor, fan, filter and hardware.

When I switched on the 453A to begin work on it the horizontal sweep had
totally died, I just had vertical signal evident, the fault proved to be
both R833 and R843 in the emitter circuit of Q834 and Q844, the paraphase
amplifier of the horizontal amplifier circuit, both resistors had gone
either open or very high resistance, I was not the first person to have

done


work in this area because R843 had obviously been replaced before, the

scope


came good much to my relief.

A strange pungent odor was always evident whenever the scope was turned

on,


the only thing out of place I could detect was on the Z axis board where

the


circuit board underneath R1043, R1044 had a brown/not quite burnt look to
it, with the scope now working normally voltage checks showed that R1043

was


dissipating 2 watts and was certainly hot to the touch, it is a 3 watt

rated


resistor so I figured that it must be within limits, my question, is
discolouring of this nature normal on this board?

One reason for the damage may be because of operation by previous owner of
the scope without the fan? my obvious next step is to obtain all the
necessary bits to keep things cool, from the parts list in the handbook

that


I have managed to obtain, I need the following for my serial number scope:

p/no 147-0033-01 motor fan
211-0158-00 3 screws 4-40x0.25 inch PHS
131-0759-00 1 terminal lug
337-1505-00 1 shield for fan motor
369-0025-00 1 impeller fan
213-0126-00 1 set screw 6-32x0.25 inch HSS
407-0308-02 1 bracket fan motor & mounting hardware
211-0012-00 3 screws 4-40x0.375 inch PHS
210-0851-00 6 washers
220-0471-00 3 nuts stepped round 4-40x0.217 inch long
380-0082-00 1 housing fan filter

Can anyone help?

Wade VK4ACB


Hello Wade,
I can help you. Not long ago, Denis Cobley gave me a partly
cannibalised carcass to help keep my 454 going into the future.
Denis's parting words to me were, "Keep the Faith."
Let me help you to keep the faith also. :-)
Denis kindly gave me the carcass for free, therefore you
may also have the fan and bits for free. Contact me direct,
off the list. I responded to you on the list to let others
know to stop looking for parts as there is a good chance
of a result for you. I haven't removed any bits yet so I
don't know the condition of them.
Regards
John Crighton
Hornsby Heights
New South Wales (that'll confuse the merkins) ;-)






Yahoo! Groups Links








RF Connectors

Brooke Clarke
 

Hi:

Most of my career was spent in microwave engineering and 90+% of that with components using coax connectors.

The SMA connectors were designed to work with semirigid 0.141" diameter coax and used the coax center conductor for the male pin, so a cable was made up using a couple of male nuts whose shell was soldered onto the copper coax shield. The intent of this connector was that you would build up a system and then leave it alone. i.e. they are specified for a very small number of matings.

This was a problem later when we were making satellite hardware. I often said that we supplied the hardware free, and only charged the customer 1$ per page for the test data, which then was shipped in cardboard boxes. The solution was to use "connector savers" which is an adapter SMA-m to SMA-f. A record was kept on each data sheet of every mating and after some number the connector saver was replaced. The connector saver was rated for many more matings than was the base connector.

Now you can get 0.141 cable that's much more flexible than the old copper stuff and so do not need bending tools to build systems.

I was part of a group that studied ways for the company to save money, and RF connector adapters turned out to be a real problem. They would get dinged or have broken fingers that would cause VSWR problems that were very hard to detect and correct. Since they were expensive the technicians would horde them. The storage method was to use a machinist chest where each time the drawer was opened or closed the connectors would roll and bang into each other.

Have Fun,

Brooke Clarke, N6GCE

--
http://www.PRC68.com
http://www.pacificsites.com/~brooke/PRC68COM.shtml


Re: Digest Number 1190

Craig Sawyers <c.sawyers@...>
 

So, in sum, BNC has better impedance matching to 4 GHz than the N,
but the BNC has the inherent LC low pass so things start to roll off
above 4 GHz with the BNC -- is that right? That being the case,
specify BNC or TNC for stuff below 4 GHz, and N above that?
Again, not so. Checking with the Amphenol site, the normal type N has a
VSWR of 1.3 maximum to 12.4GHz, and the BNC is 1.3 max to 4GHz. The
implication is that the VSWR of the N is lower than the BNC within the 4GHz
BNC bandwidth.

There is also something called the corrugated type N, which is specified in
terms of return loss. These numbers can be converted into VSWR, giving:

1-2GHz - 1.04
2-3GHz - 1.08

which is pretty darned good.

Now, to add to the mix, what about the SMA?
Spec depends on the cable used. With rigid cable the VSWR is given by 1.05
+ 0.005f(GHz) and with RG178 1.2 + 0.025f(GHz)

Another factor here is the power handling of the connectors. The corrugated
type N can handle 10kW peaks and 600W continuous; this isn't specified for
the BNC and SMA, but it is a fair assumption that they won't get anywhere
near that sort of power.

Also, rf leakage is -55dB for the BNC and -90dB for the N and SMA, which may
be important depending on application. In general, screwed connectors have
lower leakage - which is why GR introduced the locking version of the 874,
and then the 900 series (which had excellent performance - VSWR of 1.001 +
0.001f(GHz) to 9GHZ and -130dB leakage. Chunky and expensive in its day -
but unparalelled performance)

Craig


Re: BNC versus N connectors on test equip.

Miroslav Pokorni
 

You got your numbers reversed, BNC is specified to 4 GHz and N to 12 GHz and
that applies to a good quality connectors, for example full spec Amphenol as
opposed to Amphenol RFX series or Pasternak.

Regards

Miroslav Pokorni

----- Original Message -----
From: "phila_renewal" <phila.renewal@comcast.net>
To: <TekScopes@yahoogroups.com>
Sent: Thursday, August 05, 2004 4:59 AM
Subject: [TekScopes] BNC versus N connectors on test equip.


Hate to keep beating this horse (but I will anyway). Since a
quality BNC-to-BNC interconnect has a specified minimum bandwidth of
11 GHz and a quality N-to-N has specified minimum bandwidth of 4 GHz
(due to more parasitic LC creating a "lower" low pass), I have to
ask why all rf test equip. still seems to use the N (including those
intended for use well above 4 GHz). If it's the mechanical
stability of the connection, wouldn't a TNC make more sense than the
N?

Anyone know?

Thanks very much,
-Keith




Re: Is anyone on the list in Japan?

Eric Schumacher <WB6KCN@...>
 

HI

Have babblefish translate it for you.

E

Hi,

Is anyone on this list in Japan? I have to contact a company and all the web site info is in Japanese and help from someone in Japan may help.

Thanks,
Dan
_____

<http://www.ntecusa.com/graphics/intranet/n_logo_sm_blue.jpg> Dan Tulloss
Metrologist
dtulloss@ntecusa.com National Test Equipment, Inc.
http://www.nationaltestequipment.com <http://www.nationaltestequipment.com/>
1935 Plaza Real Oceanside, CA 92056 | PH: (760) 639-1700 | FX: (760) 639-1799









Yahoo! Groups Links




Re: Digest Number 1190

phila_renewal
 

Oops -- a little more poking around and I see I got things
completely mixed up. N is spec'd. to 11 GHz; BNC to only 4. It's
the BNC that has the inherent low pass -- the N has "worse"
impedance matching due to the uncompensated inductance, but doesn't
have the low pass LC filter characteristics of the BNC (?).

So, in sum, BNC has better impedance matching to 4 GHz than the N,
but the BNC has the inherent LC low pass so things start to roll off
above 4 GHz with the BNC -- is that right? That being the case,
specify BNC or TNC for stuff below 4 GHz, and N above that?

Now, to add to the mix, what about the SMA?

Thanks again,
-Keith




--- In TekScopes@yahoogroups.com, Brooke Clarke <brooke@p...> wrote:
Hi Keith:

I think your data is wrong. The 50 Ohm N, BNC and TNC connectors
all
have identical I.D. and mating pins and sockets, the only
difference
between them is how they mechanically connect. If you hacksaw the
nut/connector from a male connector then you can plug it into any
of the
female connectors.

When H.P. introduced the first microwave network analyzer (8410) I
went
to an all day sales pitch and one of the demos was measuring the S
parameters of a 3 foot length of BNC cable to 12 GHz, and it
looked very
good.

A number of the HP network analyzers use a precision N connector
that's
rated to 18 GHz. Above 18 GHz, no matter how well made the
connector
you can get moding and so for higher frequencies you need to go to
smaller and smaller I.D. connectors.

Also the N connector is used because of it's mechanical strength
so hold
small test sets to the front of the instrument.

Have Fun,

Brooke Clarke, N6GCE

--
http://www.PRC68.com
http://www.pacificsites.com/~brooke/PRC68COM.shtml


Re: TDS460 Acq and other failures

Denis Cobley <denis.cobley@...>
 

First step is to replace ALL the surface mount electro caps on both bottom
boards (Acq & Atten).
This might not totally fix it but is often a cure for TDS500 & 400 scope
problems.
You are going to have real problems after that as Tek never released
circuits or parts for these scopes to component level.

Regards
Denis Cobley

----- Original Message -----
From: "unclebilly79" <unclebilly79@yahoo.com>
To: <TekScopes@yahoogroups.com>
Sent: Thursday, August 05, 2004 4:25 PM
Subject: [TekScopes] TDS460 Acq and other failures


I have a TDS460 scope which boots up to an ACQ and sometimes an ATTN
fault. It is a "350 MHz" scope (I understand the digital diff...) but
it fails to sample/trigger above about 10-20Mhz. It displays a hole
or gap in the front end of a trace. It seems to be a good "low-freq"
scope otherwise.

The manual walks me through the steps to a simple solution - replace
the main acq board (unavailable?). And if that doesn't work - try
again.

I like this scope; it has the GPIB and VGA options I can really use.
Do I have a really nice 10MHz scope or is there help??? Most of my
work is under 10MHz but I really would like to have the PC
connectivity option.

Any thoughts or suggestions?

Thanks,
Bill






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