Re: [AFMUG] "Low pass" attenuator

2023-07-12 Thread Josh Luthman 
You put the attenuator in the NID.

On Wed, Jul 12, 2023 at 8:24 PM Bill Prince  wrote:

> What if you just feed it into a splitter? a 32-way split will knock off a
> bunch of dBs.
>
>
> bp
> 
>
> On 7/12/2023 2:11 PM, castarritt wrote:
>
> So overload is -14db where the other one is -7, but is rx sensitivity also
> ~7db higher?  if it is, just pop a ~7db attenuator into it and all the
> weaker ONTs will still connect just fine.
>
> On Wed, Jul 12, 2023 at 3:31 PM  wrote:
>
>> In my imagination I picture something with microsecond response time that
>> only affects the signal from the stronger ONT.
>>
>> If signal is stronger than -15 then reduce it by 5dB.
>>
>>
>>
>> Maybe some kind of opto-electronic switch that directs light through two
>> equal length paths.  One path has the attenuator, and the signals from the
>> strong ONT take that path and recombine with the unattenuated path
>> afterwards.  I suppose it doesn’t exist and would cost a million dollars if
>> it did.
>>
>>
>>
>> We’ll see if the vendor can fix the sensitivity issue, and otherwise
>> we’ll just not buy that unit.
>>
>>
>>
>> -Adam
>>
>>
>>
>>
>>
>> *From:* ch...@go-mtc.com 
>> *Sent:* Tuesday, July 11, 2023 1:01 PM
>> *To:* dmmoff...@gmail.com; 'AnimalFarm Microwave Users Group' <
>> af@af.afmug.com>
>> *Subject:* Re: [AFMUG] "Low pass" attenuator
>>
>>
>>
>> The real hot ones are just a time slice I presume so you would have to
>> take the attenuator in and out of the circuit synched on the ont transmit
>> schedule.
>>
>> Pads on hot ONTs seem to be the only solution to me.
>>
>>
>>
>>
>>
>>
>>
>> *From:* dmmoff...@gmail.com
>>
>> *Sent:* Tuesday, July 11, 2023 10:16 AM
>>
>> *To:* 'AnimalFarm Microwave Users Group'
>>
>> *Cc:* ch...@go-mtc.com
>>
>> *Subject:* RE: [AFMUG] "Low pass" attenuator
>>
>>
>>
>> Exactly.
>>
>> We were testing a different brand of XGS-PON transceiver.  It works fine,
>> except clients stronger than about -14 don’t connect.  Our current brand
>> alarms at -10, but functions as high as -7, so our design assumes -10 as a
>> cutoff.
>>
>> We can go around and pad the hot ONT’s, but it would be super convenient
>> if we could magically add 5dB to only the real hot ones.
>>
>>
>>
>> …. we could just not use the transceiver, but it’s a lot cheaper than
>> what the OLT manufacturer is selling us so it would be nice to make it work.
>>
>>
>>
>> -Adam
>>
>>
>>
>>
>>
>> *From:* AF  *On Behalf Of *Chuck McCown via AF
>> *Sent:* Tuesday, July 11, 2023 11:01 AM
>> *To:* AnimalFarm Microwave Users Group 
>> *Cc:* ch...@go-mtc.com
>> *Subject:* Re: [AFMUG] “Low pass” attenuator
>>
>>
>>
>> Curious, where would you have two signals of different amplitude in a
>> fiber system?  PON return signals?
>>
>>
>>
>>
>>
>> *From:* Adam Moffett
>>
>> *Sent:* Tuesday, July 11, 2023 5:07 AM
>>
>> *To:* AnimalFarm Microwave Users Group
>>
>> *Subject:* [AFMUG] “Low pass” attenuator
>>
>>
>>
>> Is there such a thing as a fiber attenuator that only attenuates a signal
>> higher than some threshold?
>>
>>
>>
>> I’m thinking to prevent overloading a receiver, but let weaker signals
>> pass unimpeded.
>>
>>
>>
>> Get Outlook for iOS <https://aka.ms/o0ukef>
>> --
>>
>> --
>> AF mailing list
>> AF@af.afmug.com
>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
>> --
>> AF mailing list
>> AF@af.afmug.com
>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
>>
>
> --
> AF mailing list
> AF@af.afmug.com
> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
>
-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

Re: [AFMUG] "Low pass" attenuator

2023-07-12 Thread Adam Moffett 
Sorry no, I phrased it poorly. The actual receiver sensitivity is equivalent.  
By “sensitivity issue” I meant they’re being “sensitive” about strong signals.  
Like how I’m “sensitive” about being hit with a bat, but I don’t actually have 
a better than normal sense of touch.


Get Outlook for iOS<https://aka.ms/o0ukef>

From: AF  on behalf of castarritt 

Sent: Wednesday, July 12, 2023 5:11:48 PM
To: AnimalFarm Microwave Users Group 
Subject: Re: [AFMUG] "Low pass" attenuator

So overload is -14db where the other one is -7, but is rx sensitivity also ~7db 
higher?  if it is, just pop a ~7db attenuator into it and all the weaker ONTs 
will still connect just fine.

On Wed, Jul 12, 2023 at 3:31 PM 
mailto:dmmoff...@gmail.com>> wrote:

In my imagination I picture something with microsecond response time that only 
affects the signal from the stronger ONT.

If signal is stronger than -15 then reduce it by 5dB.



Maybe some kind of opto-electronic switch that directs light through two equal 
length paths.  One path has the attenuator, and the signals from the strong ONT 
take that path and recombine with the unattenuated path afterwards.  I suppose 
it doesn’t exist and would cost a million dollars if it did.



We’ll see if the vendor can fix the sensitivity issue, and otherwise we’ll just 
not buy that unit.



-Adam





From: ch...@go-mtc.com<mailto:ch...@go-mtc.com> 
mailto:ch...@go-mtc.com>>
Sent: Tuesday, July 11, 2023 1:01 PM
To: dmmoff...@gmail.com<mailto:dmmoff...@gmail.com>; 'AnimalFarm Microwave 
Users Group' mailto:af@af.afmug.com>>
Subject: Re: [AFMUG] "Low pass" attenuator



The real hot ones are just a time slice I presume so you would have to take the 
attenuator in and out of the circuit synched on the ont transmit schedule.

Pads on hot ONTs seem to be the only solution to me.







From: dmmoff...@gmail.com<mailto:dmmoff...@gmail.com>

Sent: Tuesday, July 11, 2023 10:16 AM

To: 'AnimalFarm Microwave Users Group'

Cc: ch...@go-mtc.com<mailto:ch...@go-mtc.com>

Subject: RE: [AFMUG] "Low pass" attenuator



Exactly.

We were testing a different brand of XGS-PON transceiver.  It works fine, 
except clients stronger than about -14 don’t connect.  Our current brand alarms 
at -10, but functions as high as -7, so our design assumes -10 as a cutoff.

We can go around and pad the hot ONT’s, but it would be super convenient if we 
could magically add 5dB to only the real hot ones.



…. we could just not use the transceiver, but it’s a lot cheaper than what the 
OLT manufacturer is selling us so it would be nice to make it work.



-Adam





From: AF mailto:af-boun...@af.afmug.com>> On Behalf Of 
Chuck McCown via AF
Sent: Tuesday, July 11, 2023 11:01 AM
To: AnimalFarm Microwave Users Group mailto:af@af.afmug.com>>
Cc: ch...@go-mtc.com<mailto:ch...@go-mtc.com>
Subject: Re: [AFMUG] “Low pass” attenuator



Curious, where would you have two signals of different amplitude in a fiber 
system?  PON return signals?





From: Adam Moffett

Sent: Tuesday, July 11, 2023 5:07 AM

To: AnimalFarm Microwave Users Group

Subject: [AFMUG] “Low pass” attenuator



Is there such a thing as a fiber attenuator that only attenuates a signal 
higher than some threshold?



I’m thinking to prevent overloading a receiver, but let weaker signals pass 
unimpeded.



Get Outlook for iOS<https://aka.ms/o0ukef>



--
AF mailing list
AF@af.afmug.com<mailto:AF@af.afmug.com>
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

--
AF mailing list
AF@af.afmug.com<mailto:AF@af.afmug.com>
http://af.afmug.com/mailman/listinfo/af_af.afmug.com
-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

Re: [AFMUG] "Low pass" attenuator

2023-07-12 Thread Adam Moffett 

We could add splitters or fixed attenuators at the ont end.  It could be done 
at the NID or the drop termination closure.

That’s just inconvenient due to all the site visits.  It’s easy to attenuate at 
the OLT also, but it would affect every customer on the port equally.  I’d want 
to attenuate selectively.  Oh geez I wonder if Nokia has a setting to just dial 
back the tx on the ONT.

Get Outlook for iOS<https://aka.ms/o0ukef>

From: AF  on behalf of Bill Prince 

Sent: Wednesday, July 12, 2023 6:58:49 PM
To: af@af.afmug.com 
Subject: Re: [AFMUG] "Low pass" attenuator


What if you just feed it into a splitter? a 32-way split will knock off a bunch 
of dBs.


bp


On 7/12/2023 2:11 PM, castarritt wrote:
So overload is -14db where the other one is -7, but is rx sensitivity also ~7db 
higher?  if it is, just pop a ~7db attenuator into it and all the weaker ONTs 
will still connect just fine.

On Wed, Jul 12, 2023 at 3:31 PM 
mailto:dmmoff...@gmail.com>> wrote:

In my imagination I picture something with microsecond response time that only 
affects the signal from the stronger ONT.

If signal is stronger than -15 then reduce it by 5dB.



Maybe some kind of opto-electronic switch that directs light through two equal 
length paths.  One path has the attenuator, and the signals from the strong ONT 
take that path and recombine with the unattenuated path afterwards.  I suppose 
it doesn’t exist and would cost a million dollars if it did.



We’ll see if the vendor can fix the sensitivity issue, and otherwise we’ll just 
not buy that unit.



-Adam





From: ch...@go-mtc.com<mailto:ch...@go-mtc.com> 
mailto:ch...@go-mtc.com>>
Sent: Tuesday, July 11, 2023 1:01 PM
To: dmmoff...@gmail.com<mailto:dmmoff...@gmail.com>; 'AnimalFarm Microwave 
Users Group' mailto:af@af.afmug.com>>
Subject: Re: [AFMUG] "Low pass" attenuator



The real hot ones are just a time slice I presume so you would have to take the 
attenuator in and out of the circuit synched on the ont transmit schedule.

Pads on hot ONTs seem to be the only solution to me.







From: dmmoff...@gmail.com<mailto:dmmoff...@gmail.com>

Sent: Tuesday, July 11, 2023 10:16 AM

To: 'AnimalFarm Microwave Users Group'

Cc: ch...@go-mtc.com<mailto:ch...@go-mtc.com>

Subject: RE: [AFMUG] "Low pass" attenuator



Exactly.

We were testing a different brand of XGS-PON transceiver.  It works fine, 
except clients stronger than about -14 don’t connect.  Our current brand alarms 
at -10, but functions as high as -7, so our design assumes -10 as a cutoff.

We can go around and pad the hot ONT’s, but it would be super convenient if we 
could magically add 5dB to only the real hot ones.



…. we could just not use the transceiver, but it’s a lot cheaper than what the 
OLT manufacturer is selling us so it would be nice to make it work.



-Adam





From: AF mailto:af-boun...@af.afmug.com>> On Behalf Of 
Chuck McCown via AF
Sent: Tuesday, July 11, 2023 11:01 AM
To: AnimalFarm Microwave Users Group mailto:af@af.afmug.com>>
Cc: ch...@go-mtc.com<mailto:ch...@go-mtc.com>
Subject: Re: [AFMUG] “Low pass” attenuator



Curious, where would you have two signals of different amplitude in a fiber 
system?  PON return signals?





From: Adam Moffett

Sent: Tuesday, July 11, 2023 5:07 AM

To: AnimalFarm Microwave Users Group

Subject: [AFMUG] “Low pass” attenuator



Is there such a thing as a fiber attenuator that only attenuates a signal 
higher than some threshold?



I’m thinking to prevent overloading a receiver, but let weaker signals pass 
unimpeded.



Get Outlook for iOS<https://aka.ms/o0ukef>



--
AF mailing list
AF@af.afmug.com<mailto:AF@af.afmug.com>
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

--
AF mailing list
AF@af.afmug.com<mailto:AF@af.afmug.com>
http://af.afmug.com/mailman/listinfo/af_af.afmug.com


-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

Re: [AFMUG] "Low pass" attenuator

2023-07-12 Thread Bill Prince 
What if you just feed it into a splitter? a 32-way split will knock off 
a bunch of dBs.



bp


On 7/12/2023 2:11 PM, castarritt wrote:
So overload is -14db where the other one is -7, but is rx sensitivity 
also ~7db higher?  if it is, just pop a ~7db attenuator into it and 
all the weaker ONTs will still connect just fine.


On Wed, Jul 12, 2023 at 3:31 PM  wrote:

In my imagination I picture something with microsecond response
time that only affects the signal from the stronger ONT.

If signal is stronger than -15 then reduce it by 5dB.

Maybe some kind of opto-electronic switch that directs light
through two equal length paths.  One path has the attenuator, and
the signals from the strong ONT take that path and recombine with
the unattenuated path afterwards.  I suppose it doesn’t exist and
would cost a million dollars if it did.

We’ll see if the vendor can fix the sensitivity issue, and
otherwise we’ll just not buy that unit.

-Adam

*From:* ch...@go-mtc.com 
*Sent:* Tuesday, July 11, 2023 1:01 PM
*To:* dmmoff...@gmail.com; 'AnimalFarm Microwave Users Group'

*Subject:* Re: [AFMUG] "Low pass" attenuator

The real hot ones are just a time slice I presume so you would
have to take the attenuator in and out of the circuit synched on
the ont transmit schedule.

Pads on hot ONTs seem to be the only solution to me.

*From:*dmmoff...@gmail.com

*Sent:*Tuesday, July 11, 2023 10:16 AM

*To:*'AnimalFarm Microwave Users Group'

*Cc:*ch...@go-mtc.com

*Subject:*RE: [AFMUG] "Low pass" attenuator

Exactly.

We were testing a different brand of XGS-PON transceiver.  It
works fine, except clients stronger than about -14 don’t connect. 
Our current brand alarms at -10, but functions as high as -7, so
our design assumes -10 as a cutoff.

We can go around and pad the hot ONT’s, but it would be super
convenient if we could magically add 5dB to only the real hot ones.

…. we could just not use the transceiver, but it’s a lot cheaper
than what the OLT manufacturer is selling us so it would be nice
to make it work.

-Adam

*From:*AF  *On Behalf Of *Chuck McCown via AF
*Sent:* Tuesday, July 11, 2023 11:01 AM
*To:* AnimalFarm Microwave Users Group 
*Cc:* ch...@go-mtc.com
*Subject:* Re: [AFMUG] “Low pass” attenuator

Curious, where would you have two signals of different amplitude
in a fiber system?  PON return signals?

*From:*Adam Moffett

*Sent:*Tuesday, July 11, 2023 5:07 AM

*To:*AnimalFarm Microwave Users Group

    *Subject:*[AFMUG] “Low pass” attenuator

Is there such a thing as a fiber attenuator that only attenuates a
signal higher than some threshold?

I’m thinking to prevent overloading a receiver, but let weaker
signals pass unimpeded.

Get Outlook for iOS <https://aka.ms/o0ukef>



-- 
AF mailing list

AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

-- 
AF mailing list

AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

Re: [AFMUG] "Low pass" attenuator

2023-07-12 Thread castarritt 
So overload is -14db where the other one is -7, but is rx sensitivity also
~7db higher?  if it is, just pop a ~7db attenuator into it and all the
weaker ONTs will still connect just fine.

On Wed, Jul 12, 2023 at 3:31 PM  wrote:

> In my imagination I picture something with microsecond response time that
> only affects the signal from the stronger ONT.
>
> If signal is stronger than -15 then reduce it by 5dB.
>
>
>
> Maybe some kind of opto-electronic switch that directs light through two
> equal length paths.  One path has the attenuator, and the signals from the
> strong ONT take that path and recombine with the unattenuated path
> afterwards.  I suppose it doesn’t exist and would cost a million dollars if
> it did.
>
>
>
> We’ll see if the vendor can fix the sensitivity issue, and otherwise we’ll
> just not buy that unit.
>
>
>
> -Adam
>
>
>
>
>
> *From:* ch...@go-mtc.com 
> *Sent:* Tuesday, July 11, 2023 1:01 PM
> *To:* dmmoff...@gmail.com; 'AnimalFarm Microwave Users Group' <
> af@af.afmug.com>
> *Subject:* Re: [AFMUG] "Low pass" attenuator
>
>
>
> The real hot ones are just a time slice I presume so you would have to
> take the attenuator in and out of the circuit synched on the ont transmit
> schedule.
>
> Pads on hot ONTs seem to be the only solution to me.
>
>
>
>
>
>
>
> *From:* dmmoff...@gmail.com
>
> *Sent:* Tuesday, July 11, 2023 10:16 AM
>
> *To:* 'AnimalFarm Microwave Users Group'
>
> *Cc:* ch...@go-mtc.com
>
> *Subject:* RE: [AFMUG] "Low pass" attenuator
>
>
>
> Exactly.
>
> We were testing a different brand of XGS-PON transceiver.  It works fine,
> except clients stronger than about -14 don’t connect.  Our current brand
> alarms at -10, but functions as high as -7, so our design assumes -10 as a
> cutoff.
>
> We can go around and pad the hot ONT’s, but it would be super convenient
> if we could magically add 5dB to only the real hot ones.
>
>
>
> …. we could just not use the transceiver, but it’s a lot cheaper than what
> the OLT manufacturer is selling us so it would be nice to make it work.
>
>
>
> -Adam
>
>
>
>
>
> *From:* AF  *On Behalf Of *Chuck McCown via AF
> *Sent:* Tuesday, July 11, 2023 11:01 AM
> *To:* AnimalFarm Microwave Users Group 
> *Cc:* ch...@go-mtc.com
> *Subject:* Re: [AFMUG] “Low pass” attenuator
>
>
>
> Curious, where would you have two signals of different amplitude in a
> fiber system?  PON return signals?
>
>
>
>
>
> *From:* Adam Moffett
>
> *Sent:* Tuesday, July 11, 2023 5:07 AM
>
> *To:* AnimalFarm Microwave Users Group
>
> *Subject:* [AFMUG] “Low pass” attenuator
>
>
>
> Is there such a thing as a fiber attenuator that only attenuates a signal
> higher than some threshold?
>
>
>
> I’m thinking to prevent overloading a receiver, but let weaker signals
> pass unimpeded.
>
>
>
> Get Outlook for iOS <https://aka.ms/o0ukef>
> --
>
> --
> AF mailing list
> AF@af.afmug.com
> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
> --
> AF mailing list
> AF@af.afmug.com
> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
>
-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

Re: [AFMUG] "Low pass" attenuator

2023-07-12 Thread Chuck McCown via AF 
Could be done.  Just depends on how much dead zone there is on the leading edge 
of the frame.

From: dmmoff...@gmail.com 
Sent: Wednesday, July 12, 2023 12:37 PM
To: ch...@go-mtc.com ; 'AnimalFarm Microwave Users Group' 
Subject: RE: [AFMUG] "Low pass" attenuator

In my imagination I picture something with microsecond response time that only 
affects the signal from the stronger ONT.

If signal is stronger than -15 then reduce it by 5dB.  

 

Maybe some kind of opto-electronic switch that directs light through two equal 
length paths.  One path has the attenuator, and the signals from the strong ONT 
take that path and recombine with the unattenuated path afterwards.  I suppose 
it doesn’t exist and would cost a million dollars if it did.

 

We’ll see if the vendor can fix the sensitivity issue, and otherwise we’ll just 
not buy that unit.

 

-Adam

 

 

From: ch...@go-mtc.com  
Sent: Tuesday, July 11, 2023 1:01 PM
To: dmmoff...@gmail.com; 'AnimalFarm Microwave Users Group' 
Subject: Re: [AFMUG] "Low pass" attenuator

 

The real hot ones are just a time slice I presume so you would have to take the 
attenuator in and out of the circuit synched on the ont transmit schedule.  

Pads on hot ONTs seem to be the only solution to me.  

 

 

 

From: dmmoff...@gmail.com 

Sent: Tuesday, July 11, 2023 10:16 AM

To: 'AnimalFarm Microwave Users Group' 

Cc: ch...@go-mtc.com 

Subject: RE: [AFMUG] "Low pass" attenuator

 

Exactly.

We were testing a different brand of XGS-PON transceiver.  It works fine, 
except clients stronger than about -14 don’t connect.  Our current brand alarms 
at -10, but functions as high as -7, so our design assumes -10 as a cutoff.  

We can go around and pad the hot ONT’s, but it would be super convenient if we 
could magically add 5dB to only the real hot ones.   

 

…. we could just not use the transceiver, but it’s a lot cheaper than what the 
OLT manufacturer is selling us so it would be nice to make it work.

 

-Adam

 

 

From: AF  On Behalf Of Chuck McCown via AF
Sent: Tuesday, July 11, 2023 11:01 AM
To: AnimalFarm Microwave Users Group 
Cc: ch...@go-mtc.com
Subject: Re: [AFMUG] “Low pass” attenuator

 

Curious, where would you have two signals of different amplitude in a fiber 
system?  PON return signals?

 

 

From: Adam Moffett 

Sent: Tuesday, July 11, 2023 5:07 AM

To: AnimalFarm Microwave Users Group 

Subject: [AFMUG] “Low pass” attenuator

 

Is there such a thing as a fiber attenuator that only attenuates a signal 
higher than some threshold?

 

I’m thinking to prevent overloading a receiver, but let weaker signals pass 
unimpeded.

 

Get Outlook for iOS




-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com
-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

Re: [AFMUG] "Low pass" attenuator

2023-07-12 Thread dmmoffett 
In my imagination I picture something with microsecond response time that only 
affects the signal from the stronger ONT.

If signal is stronger than -15 then reduce it by 5dB.  

 

Maybe some kind of opto-electronic switch that directs light through two equal 
length paths.  One path has the attenuator, and the signals from the strong ONT 
take that path and recombine with the unattenuated path afterwards.  I suppose 
it doesn’t exist and would cost a million dollars if it did.

 

We’ll see if the vendor can fix the sensitivity issue, and otherwise we’ll just 
not buy that unit.

 

-Adam

 

 

From: ch...@go-mtc.com  
Sent: Tuesday, July 11, 2023 1:01 PM
To: dmmoff...@gmail.com; 'AnimalFarm Microwave Users Group' 
Subject: Re: [AFMUG] "Low pass" attenuator

 

The real hot ones are just a time slice I presume so you would have to take the 
attenuator in and out of the circuit synched on the ont transmit schedule.  

Pads on hot ONTs seem to be the only solution to me.  

 

 

 

From: dmmoff...@gmail.com <mailto:dmmoff...@gmail.com>  

Sent: Tuesday, July 11, 2023 10:16 AM

To: 'AnimalFarm Microwave Users Group' 

Cc: ch...@go-mtc.com <mailto:ch...@go-mtc.com>  

Subject: RE: [AFMUG] "Low pass" attenuator

 

Exactly.

We were testing a different brand of XGS-PON transceiver.  It works fine, 
except clients stronger than about -14 don’t connect.  Our current brand alarms 
at -10, but functions as high as -7, so our design assumes -10 as a cutoff.  

We can go around and pad the hot ONT’s, but it would be super convenient if we 
could magically add 5dB to only the real hot ones.   

 

…. we could just not use the transceiver, but it’s a lot cheaper than what the 
OLT manufacturer is selling us so it would be nice to make it work.

 

-Adam

 

 

From: AF mailto:af-boun...@af.afmug.com> > On Behalf 
Of Chuck McCown via AF
Sent: Tuesday, July 11, 2023 11:01 AM
To: AnimalFarm Microwave Users Group mailto:af@af.afmug.com> >
Cc: ch...@go-mtc.com <mailto:ch...@go-mtc.com> 
Subject: Re: [AFMUG] “Low pass” attenuator

 

Curious, where would you have two signals of different amplitude in a fiber 
system?  PON return signals?

 

 

From: Adam Moffett 

Sent: Tuesday, July 11, 2023 5:07 AM

To: AnimalFarm Microwave Users Group 

Subject: [AFMUG] “Low pass” attenuator

 

Is there such a thing as a fiber attenuator that only attenuates a signal 
higher than some threshold?

 

I’m thinking to prevent overloading a receiver, but let weaker signals pass 
unimpeded.

 

Get Outlook for iOS <https://aka.ms/o0ukef> 

  _  

-- 
AF mailing list
AF@af.afmug.com <mailto:AF@af.afmug.com> 
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

Re: [AFMUG] "Low pass" attenuator

2023-07-12 Thread dmmoffett 
Nokia.

 

From: AF  On Behalf Of Chris Fabien
Sent: Tuesday, July 11, 2023 7:29 PM
To: AnimalFarm Microwave Users Group 
Subject: Re: [AFMUG] "Low pass" attenuator

 

If it's for calix I'd be curious to know what you're testing...

 

On Tue, Jul 11, 2023, 1:27 PM mailto:dmmoff...@gmail.com> 
> wrote:

Exactly.

We were testing a different brand of XGS-PON transceiver.  It works fine, 
except clients stronger than about -14 don’t connect.  Our current brand alarms 
at -10, but functions as high as -7, so our design assumes -10 as a cutoff.  

We can go around and pad the hot ONT’s, but it would be super convenient if we 
could magically add 5dB to only the real hot ones.   

 

…. we could just not use the transceiver, but it’s a lot cheaper than what the 
OLT manufacturer is selling us so it would be nice to make it work.

 

-Adam

 

 

From: AF mailto:af-boun...@af.afmug.com> > On Behalf 
Of Chuck McCown via AF
Sent: Tuesday, July 11, 2023 11:01 AM
To: AnimalFarm Microwave Users Group mailto:af@af.afmug.com> >
Cc: ch...@go-mtc.com <mailto:ch...@go-mtc.com> 
Subject: Re: [AFMUG] “Low pass” attenuator

 

Curious, where would you have two signals of different amplitude in a fiber 
system?  PON return signals?

 

 

From: Adam Moffett 

Sent: Tuesday, July 11, 2023 5:07 AM

To: AnimalFarm Microwave Users Group 

Subject: [AFMUG] “Low pass” attenuator

 

Is there such a thing as a fiber attenuator that only attenuates a signal 
higher than some threshold?

 

I’m thinking to prevent overloading a receiver, but let weaker signals pass 
unimpeded.

 

Get Outlook for iOS <https://aka.ms/o0ukef> 


  _  


-- 
AF mailing list
AF@af.afmug.com <mailto:AF@af.afmug.com> 
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

-- 
AF mailing list
AF@af.afmug.com <mailto:AF@af.afmug.com> 
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

Re: [AFMUG] "Low pass" attenuator

2023-07-11 Thread Chris Fabien 
If it's for calix I'd be curious to know what you're testing...

On Tue, Jul 11, 2023, 1:27 PM  wrote:

> Exactly.
>
> We were testing a different brand of XGS-PON transceiver.  It works fine,
> except clients stronger than about -14 don’t connect.  Our current brand
> alarms at -10, but functions as high as -7, so our design assumes -10 as a
> cutoff.
>
> We can go around and pad the hot ONT’s, but it would be super convenient
> if we could magically add 5dB to only the real hot ones.
>
>
>
> …. we could just not use the transceiver, but it’s a lot cheaper than what
> the OLT manufacturer is selling us so it would be nice to make it work.
>
>
>
> -Adam
>
>
>
>
>
> *From:* AF  *On Behalf Of *Chuck McCown via AF
> *Sent:* Tuesday, July 11, 2023 11:01 AM
> *To:* AnimalFarm Microwave Users Group 
> *Cc:* ch...@go-mtc.com
> *Subject:* Re: [AFMUG] “Low pass” attenuator
>
>
>
> Curious, where would you have two signals of different amplitude in a
> fiber system?  PON return signals?
>
>
>
>
>
> *From:* Adam Moffett
>
> *Sent:* Tuesday, July 11, 2023 5:07 AM
>
> *To:* AnimalFarm Microwave Users Group
>
> *Subject:* [AFMUG] “Low pass” attenuator
>
>
>
> Is there such a thing as a fiber attenuator that only attenuates a signal
> higher than some threshold?
>
>
>
> I’m thinking to prevent overloading a receiver, but let weaker signals
> pass unimpeded.
>
>
>
> Get Outlook for iOS <https://aka.ms/o0ukef>
> --
>
> --
> AF mailing list
> AF@af.afmug.com
> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
> --
> AF mailing list
> AF@af.afmug.com
> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
>
-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

Re: [AFMUG] “Low pass” attenuator

2023-07-11 Thread Forrest Christian (List Account) 
Dwdm or cwdm where one hasn't taken care to balance the relative strengths
of the light entering the wdm system.

I believe some amplifiers have the effect of "smoothing out" the relative
brightness of each carrier.  But don't quote me on this as I'm just going
by marketing materials likely written by a marketing department somewhere.

On Tue, Jul 11, 2023, 9:55 AM Chuck McCown via AF  wrote:

> Curious, where would you have two signals of different amplitude in a
> fiber system?  PON return signals?
>
>
> *From:* Adam Moffett
> *Sent:* Tuesday, July 11, 2023 5:07 AM
> *To:* AnimalFarm Microwave Users Group
> *Subject:* [AFMUG] “Low pass” attenuator
>
> Is there such a thing as a fiber attenuator that only attenuates a signal
> higher than some threshold?
>
> I’m thinking to prevent overloading a receiver, but let weaker signals
> pass unimpeded.
>
> Get Outlook for iOS <https://aka.ms/o0ukef>
>
> --
> --
> AF mailing list
> AF@af.afmug.com
> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
> --
> AF mailing list
> AF@af.afmug.com
> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
>
-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

Re: [AFMUG] “Low pass” attenuator

2023-07-11 Thread Josh Luthman 
MUX?

On Tue, Jul 11, 2023 at 11:55 AM Chuck McCown via AF 
wrote:

> Curious, where would you have two signals of different amplitude in a
> fiber system?  PON return signals?
>
>
> *From:* Adam Moffett
> *Sent:* Tuesday, July 11, 2023 5:07 AM
> *To:* AnimalFarm Microwave Users Group
> *Subject:* [AFMUG] “Low pass” attenuator
>
> Is there such a thing as a fiber attenuator that only attenuates a signal
> higher than some threshold?
>
> I’m thinking to prevent overloading a receiver, but let weaker signals
> pass unimpeded.
>
> Get Outlook for iOS <https://aka.ms/o0ukef>
>
> --
> --
> AF mailing list
> AF@af.afmug.com
> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
>
> --
> AF mailing list
> AF@af.afmug.com
> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
>
-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

Re: [AFMUG] "Low pass" attenuator

2023-07-11 Thread Chuck McCown via AF 
Or just pad the whole ONU/OLT and see what happens.  



From: dmmoff...@gmail.com 
Sent: Tuesday, July 11, 2023 10:16 AM
To: 'AnimalFarm Microwave Users Group' 
Cc: ch...@go-mtc.com 
Subject: RE: [AFMUG] "Low pass" attenuator

Exactly.

We were testing a different brand of XGS-PON transceiver.  It works fine, 
except clients stronger than about -14 don’t connect.  Our current brand alarms 
at -10, but functions as high as -7, so our design assumes -10 as a cutoff.  

We can go around and pad the hot ONT’s, but it would be super convenient if we 
could magically add 5dB to only the real hot ones.   

 

…. we could just not use the transceiver, but it’s a lot cheaper than what the 
OLT manufacturer is selling us so it would be nice to make it work.

 

-Adam

 

 

From: AF  On Behalf Of Chuck McCown via AF
Sent: Tuesday, July 11, 2023 11:01 AM
To: AnimalFarm Microwave Users Group 
Cc: ch...@go-mtc.com
Subject: Re: [AFMUG] “Low pass” attenuator

 

Curious, where would you have two signals of different amplitude in a fiber 
system?  PON return signals?

 

 

From: Adam Moffett 

Sent: Tuesday, July 11, 2023 5:07 AM

To: AnimalFarm Microwave Users Group 

Subject: [AFMUG] “Low pass” attenuator

 

Is there such a thing as a fiber attenuator that only attenuates a signal 
higher than some threshold?

 

I’m thinking to prevent overloading a receiver, but let weaker signals pass 
unimpeded.

 

Get Outlook for iOS




-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com
-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

Re: [AFMUG] "Low pass" attenuator

2023-07-11 Thread Chuck McCown via AF 
The real hot ones are just a time slice I presume so you would have to take the 
attenuator in and out of the circuit synched on the ont transmit schedule.  
Pads on hot ONTs seem to be the only solution to me.  



From: dmmoff...@gmail.com 
Sent: Tuesday, July 11, 2023 10:16 AM
To: 'AnimalFarm Microwave Users Group' 
Cc: ch...@go-mtc.com 
Subject: RE: [AFMUG] "Low pass" attenuator

Exactly.

We were testing a different brand of XGS-PON transceiver.  It works fine, 
except clients stronger than about -14 don’t connect.  Our current brand alarms 
at -10, but functions as high as -7, so our design assumes -10 as a cutoff.  

We can go around and pad the hot ONT’s, but it would be super convenient if we 
could magically add 5dB to only the real hot ones.   

 

…. we could just not use the transceiver, but it’s a lot cheaper than what the 
OLT manufacturer is selling us so it would be nice to make it work.

 

-Adam

 

 

From: AF  On Behalf Of Chuck McCown via AF
Sent: Tuesday, July 11, 2023 11:01 AM
To: AnimalFarm Microwave Users Group 
Cc: ch...@go-mtc.com
Subject: Re: [AFMUG] “Low pass” attenuator

 

Curious, where would you have two signals of different amplitude in a fiber 
system?  PON return signals?

 

 

From: Adam Moffett 

Sent: Tuesday, July 11, 2023 5:07 AM

To: AnimalFarm Microwave Users Group 

Subject: [AFMUG] “Low pass” attenuator

 

Is there such a thing as a fiber attenuator that only attenuates a signal 
higher than some threshold?

 

I’m thinking to prevent overloading a receiver, but let weaker signals pass 
unimpeded.

 

Get Outlook for iOS




-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com
-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

Re: [AFMUG] "Low pass" attenuator

2023-07-11 Thread dmmoffett 
Exactly.

We were testing a different brand of XGS-PON transceiver.  It works fine,
except clients stronger than about -14 don't connect.  Our current brand
alarms at -10, but functions as high as -7, so our design assumes -10 as a
cutoff.  

We can go around and pad the hot ONT's, but it would be super convenient if
we could magically add 5dB to only the real hot ones.   

 

.. we could just not use the transceiver, but it's a lot cheaper than what
the OLT manufacturer is selling us so it would be nice to make it work.

 

-Adam

 

 

From: AF  On Behalf Of Chuck McCown via AF
Sent: Tuesday, July 11, 2023 11:01 AM
To: AnimalFarm Microwave Users Group 
Cc: ch...@go-mtc.com
Subject: Re: [AFMUG] "Low pass" attenuator

 

Curious, where would you have two signals of different amplitude in a fiber
system?  PON return signals?

 

 

From: Adam Moffett 

Sent: Tuesday, July 11, 2023 5:07 AM

To: AnimalFarm Microwave Users Group 

Subject: [AFMUG] "Low pass" attenuator

 

Is there such a thing as a fiber attenuator that only attenuates a signal
higher than some threshold?

 

I'm thinking to prevent overloading a receiver, but let weaker signals pass
unimpeded.

 

Get Outlook for iOS <https://aka.ms/o0ukef> 

  _  

-- 
AF mailing list
AF@af.afmug.com <mailto:AF@af.afmug.com> 
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

Re: [AFMUG] “Low pass” attenuator

2023-07-11 Thread Chuck McCown via AF 
Curious, where would you have two signals of different amplitude in a fiber 
system?  PON return signals?


From: Adam Moffett 
Sent: Tuesday, July 11, 2023 5:07 AM
To: AnimalFarm Microwave Users Group 
Subject: [AFMUG] “Low pass” attenuator

Is there such a thing as a fiber attenuator that only attenuates a signal 
higher than some threshold?

I’m thinking to prevent overloading a receiver, but let weaker signals pass 
unimpeded.

Get Outlook for iOS



-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com
-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com

[AFMUG] “Low pass” attenuator

2023-07-11 Thread Adam Moffett 
Is there such a thing as a fiber attenuator that only attenuates a signal 
higher than some threshold?

I’m thinking to prevent overloading a receiver, but let weaker signals pass 
unimpeded.

Get Outlook for iOS
-- 
AF mailing list
AF@af.afmug.com
http://af.afmug.com/mailman/listinfo/af_af.afmug.com