|
Hi all,
I have an 8901B here that I use to measure power with, using the internal power detector and *not* the fancy external 11722A sensor.
When I have nothing connected to the input, and I press the zero key, I get an Error 21.
Does anyone know what I am doing wrong, and how to zero the internal power level sensor?
Cheers,
Matt
|
E1 is invalid key sequence if calibration is pressed while not in AM or FM.
8480 series sensors work with your unit, high priced 11722A not required.
If you have option 10, connect calibrator output to input, select AM, push
calibrate and wait, takes about 20 seconds, do the same with FM, display
reading will be 99.0 to 101.0%
Dennis
--------------------------------------------
toggle quoted message
Show quoted text
On Fri, 10/6/17, matt.ames7bc@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
Subject: [hp_agilent_equipment] 8901B Power level zeroisation
To: hp_agilent_equipment@...
Date: Friday, October 6, 2017, 2:57 AM
Hi all,
I have an 8901B here that I use to
measure power with, using the internal power detector and
*not* the fancy external 11722A sensor.
When I have nothing connected to the
input, and I press the zero key, I get an Error
21.
Does anyone know what I am doing wrong,
and how to zero the internal power level
sensor?
Cheers,
Matt
|
Does the 8901B have any advantage besides integration over a 437/8 power meter when using a 8480 series power sensor?
The 8901B is a very large and heavy instrument which to me needs some justification to be at my bench.听
Peter
toggle quoted message
Show quoted text
听
E1 is invalid key sequence if calibration is pressed while not in AM or FM.
8480 series sensors work with your unit, high priced 11722A not required.
If you have option 10, connect calibrator output to input, select AM, push
calibrate and wait, takes about 20 seconds, do the same with FM, display
reading will be 99.0 to 101.0%
Dennis
--------------------------------------------
On Fri, 10/6/17, matt.ames7bc@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
Subject: [hp_agilent_equipment] 8901B Power level zeroisation
To: hp_agilent_equipment@...
Date: Friday, October 6, 2017, 2:57 AM
Hi all,
I have an 8901B here that I use to
measure power with, using the internal power detector and
*not* the fancy external 11722A sensor.
When I have nothing connected to the
input, and I press the zero key, I get an Error
21.
Does anyone know what I am doing wrong,
and how to zero the internal power level
sensor?
Cheers,
Matt
|
Try the 8902A 鈥� great for warming the house!
听
BTW power meter cal sequence is very similar and creates the same error 21
听
听
toggle quoted message
Show quoted text
From: hp_agilent_equipment@... [mailto:hp_agilent_equipment@...]
Sent: 06 October 2017 14:36
To: hp_agilent_equipment@...
Subject: Re: [hp_agilent_equipment] 8901B Power level zeroisation
听
听
Does the 8901B have any advantage besides integration over a 437/8 power meter when using a 8480 series power sensor?
The 8901B is a very large and heavy instrument which to me needs some justification to be at my bench.听
听
E1 is invalid key sequence if calibration is pressed while not in AM or FM.
8480 series sensors work with your unit, high priced 11722A not required.
If you have option 10, connect calibrator output to input, select AM, push
calibrate and wait, takes about 20 seconds, do the same with FM, display
reading will be 99.0 to 101.0%
Dennis
--------------------------------------------
On Fri, 10/6/17, matt.ames7bc@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
Subject: [hp_agilent_equipment] 8901B Power level zeroisation
To: hp_agilent_equipment@...
Date: Friday, October 6, 2017, 2:57 AM
Hi all,
I have an 8901B here that I use to
measure power with, using the internal power detector and
*not* the fancy external 11722A sensor.
When I have nothing connected to the
input, and I press the zero key, I get an Error
21.
Does anyone know what I am doing wrong,
and how to zero the internal power level
sensor?
Cheers,
Matt
|
The HP 8901B Modulation Analyzer combines four
functions into one, power meter, modulation
analyzer, frequency counter,and audio analyzer.
I think nicely integrated for budget bench set for
Ham operator. My unit set me back whopping $25.
Not necessary in my opinion if all you measure is power.
Dennis
--------------------------------------------
toggle quoted message
Show quoted text
On Fri, 10/6/17, Peter Gottlieb hpnpilot@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
Subject: Re: [hp_agilent_equipment] 8901B Power level zeroisation
To: hp_agilent_equipment@...
Date: Friday, October 6, 2017, 9:35 AM
Does the 8901B have any advantage besides integration
over a 437/8 power meter when using a 8480 series power
sensor?
The 8901B is a very
large and heavy instrument which to me needs some
justification to be at my bench.听
Peter
On Oct 6, 2017, at 9:25 AM, Dennis Czelusniak
czelusniakd@...
[hp_agilent_equipment] <hp_agilent_equipment@...>
wrote:
听
E1 is invalid key sequence if calibration is pressed while
not in AM or FM.
8480 series sensors work with your unit, high priced 11722A
not required.
If you have option 10, connect calibrator output to input,
select AM, push
calibrate and wait, takes about 20 seconds, do the same with
FM, display
reading will be 99.0 to 101.0%
Dennis
--------------------------------------------
On Fri, 10/6/17, matt.ames7bc@...
[hp_agilent_equipment] <hp_agilent_equipment@...>
wrote:
Subject: [hp_agilent_equipment] 8901B Power level
zeroisation
To: hp_agilent_equipment@...
Date: Friday, October 6, 2017, 2:57 AM
Hi all,
I have an 8901B here that I use to
measure power with, using the internal power detector
and
*not* the fancy external 11722A sensor.
When I have nothing connected to the
input, and I press the zero key, I get an Error
21.
Does anyone know what I am doing wrong,
and how to zero the internal power level
sensor?
Cheers,
Matt
|
I paid more than twice that just for shipping.听 But yeah, keep your eye out and you can get one pretty cheap.
Peter
toggle quoted message
Show quoted text
On 10/6/2017 11:33 AM, Dennis Czelusniak czelusniakd@... [hp_agilent_equipment] wrote:
The HP 8901B Modulation Analyzer combines four
functions into one, power meter, modulation
analyzer, frequency counter,and audio analyzer.
I think nicely integrated for budget bench set for
Ham operator. My unit set me back whopping $25.
Not necessary in my opinion if all you measure is power.
Dennis
--------------------------------------------
On Fri, 10/6/17, Peter Gottlieb hpnpilot@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
Subject: Re: [hp_agilent_equipment] 8901B Power level zeroisation
To: hp_agilent_equipment@...
Date: Friday, October 6, 2017, 9:35 AM
Does the 8901B have any advantage besides integration
over a 437/8 power meter when using a 8480 series power
sensor?
The 8901B is a very
large and heavy instrument which to me needs some
justification to be at my bench.
Peter
On Oct 6, 2017, at 9:25 AM, Dennis Czelusniak
czelusniakd@...
[hp_agilent_equipment] <hp_agilent_equipment@...>
wrote:
E1 is invalid key sequence if calibration is pressed while
not in AM or FM.
8480 series sensors work with your unit, high priced 11722A
not required.
If you have option 10, connect calibrator output to input,
select AM, push
calibrate and wait, takes about 20 seconds, do the same with
FM, display
reading will be 99.0 to 101.0%
Dennis
--------------------------------------------
On Fri, 10/6/17, matt.ames7bc@...
[hp_agilent_equipment] <hp_agilent_equipment@...>
wrote:
Subject: [hp_agilent_equipment] 8901B Power level
zeroisation
To: hp_agilent_equipment@...
Date: Friday, October 6, 2017, 2:57 AM
Hi all,
I have an 8901B here that I use to
measure power with, using the internal power detector
and
*not* the fancy external 11722A sensor.
When I have nothing connected to the
input, and I press the zero key, I get an Error
21.
Does anyone know what I am doing wrong,
and how to zero the internal power level
sensor?
Cheers,
Matt
|
I just had a look at ebay listings and do not believe the current asking prices. A few years back it seemed like no one could give them away. I found mine at a local machinery recycle warehouse. On the last Thursday of the month, any electrical left on the shelves is drastically slashed and open to offers.
Dennis
--------------------------------------------
toggle quoted message
Show quoted text
On Fri, 10/6/17, Peter Gottlieb hpnpilot@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
Subject: Re: [hp_agilent_equipment] 8901B Power level zeroisation
To: hp_agilent_equipment@...
Date: Friday, October 6, 2017, 7:32 PM
I paid more than twice that just
for shipping.听 But yeah, keep your eye out and
you can get one pretty cheap.
Peter
On 10/6/2017 11:33 AM, Dennis Czelusniak czelusniakd@...
[hp_agilent_equipment] wrote:
>
> The HP 8901B
Modulation Analyzer combines four
>
functions into one, power meter, modulation
> analyzer, frequency counter,and audio
analyzer.
> I think nicely integrated for
budget bench set for
> Ham operator. My
unit set me back whopping $25.
> Not
necessary in my opinion if all you measure is power.
>
> Dennis
>
>
--------------------------------------------
> On Fri, 10/6/17, Peter Gottlieb hpnpilot@...
[hp_agilent_equipment]
> <hp_agilent_equipment@...>
wrote:
>
> Subject:
Re: [hp_agilent_equipment] 8901B Power level zeroisation
> To: hp_agilent_equipment@...
> Date: Friday, October 6, 2017, 9:35 AM
>
> Does the 8901B have
any advantage besides integration
> over
a 437/8 power meter when using a 8480 series power
> sensor?
> The 8901B is
a very
> large and heavy instrument which
to me needs some
> justification to be at
my bench.
>
>
> Peter
> On Oct 6, 2017,
at 9:25 AM, Dennis Czelusniak
> czelusniakd@...
> [hp_agilent_equipment] <hp_agilent_equipment@...>
> wrote:
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
E1 is invalid key sequence if calibration is pressed
while
> not in AM or FM.
>
> 8480 series sensors
work with your unit, high priced 11722A
>
not required.
>
> If
you have option 10, connect calibrator output to input,
> select AM, push
>
> calibrate and wait, takes about 20
seconds, do the same with
> FM,
display
>
> reading
will be 99.0 to 101.0%
>
>
>
>
Dennis
>
>
>
>
--------------------------------------------
>
> On Fri, 10/6/17, matt.ames7bc@...
> [hp_agilent_equipment] <hp_agilent_equipment@...>
> wrote:
>
>
>
>
Subject: [hp_agilent_equipment] 8901B Power level
> zeroisation
>
> To: hp_agilent_equipment@...
>
> Date: Friday, October
6, 2017, 2:57 AM
>
>
>
>
>
>
>
>
>
>
>
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>
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>
>
>
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>
>
>
>
>
>
>
>
>
>
>
Hi all,
>
> I have an
8901B here that I use to
>
> measure power with, using the internal
power detector
> and
>
> *not* the fancy
external 11722A sensor.
>
> When I have nothing connected to the
>
> input, and I press
the zero key, I get an Error
>
> 21.
>
> Does anyone know what I am doing wrong,
>
> and how to zero the
internal power level
>
> sensor?
>
> Cheers,
>
> Matt
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
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>
>
------------------------------------
Posted by: Peter Gottlieb <hpnpilot@...>
------------------------------------
------------------------------------
Yahoo Groups Links
Traditional
听 听 (Yahoo! ID required)
听 听 hp_agilent_equipment-fullfeatured@...
|
On 10/06/2017 09:43 PM, Dennis Czelusniak czelusniakd@... [hp_agilent_equipment] wrote: I just had a look at ebay listings and do not believe the current asking prices. A few years back it seemed like no one could give them away. I found mine at a local machinery recycle warehouse. On the last Thursday of the month, any electrical left on the shelves is drastically slashed and open to offers. I dunno man, I think you got really lucky. I've never seen them go cheap. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
|
There was definitely a wave of these going cheap.听 That seems to happen with a lot of stuff, 99.9% of which I miss when looking for something.
Interesting that the 8901B takes 8480 series power sensors.听 I tried plugging one in last night.听 I got "uncal" and "recal" lights.听 The sensor zeroed but cal failed with an error 15 and error 14.听 I tried the sensor and cable on a regular power meter and it worked perfectly so I guess there's a problem in my 8901B.听 Perhaps that is why I got it so cheap.
The reason I'm not a big fan of this instrument is because although it can do many things it doesn't seem great at any of them.听 Correct me if I'm wrong.听 As a frequency counter a 5334B totally blows it away, as does a Racal 1992.听 In digits, sensitivity, response speed and of course versatility.听 I even have a 5335 which I put one of those cheap cell site rubidium oscillators in because there's so much space inside.听 As a power meter the 437/438 and of course the E4418B seem far superior and are all available, like the 5334 and 5335 counters, dirt cheap.听 That leaves modulation meter, which is why I picked up the 8901B in the first place.听 Unless you're calibrating some piece of gear, a scope (for AM) or a 53310A (for FM) are far easier and quicker to use and give you more information.
So, while I have the nice clean 8901B, it mostly serves to keep the rack it's mounted in from being too easy to move around.听 I'm not even incentivized enough to track down why a good power sensor doesn't work right with the thing.
Peter
toggle quoted message
Show quoted text
On 10/6/2017 11:40 PM, Dave McGuire Mcguire@... [hp_agilent_equipment] wrote:
On 10/06/2017 09:43 PM, Dennis Czelusniak czelusniakd@...
[hp_agilent_equipment] wrote:
I just had a look at ebay listings and do not believe the current asking prices. A few years back it seemed like no one could give them away. I found mine at a local machinery recycle warehouse. On the last Thursday of the month, any electrical left on the shelves is drastically slashed and open to offers.
I dunno man, I think you got really lucky. I've never seen them go cheap.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
|
On 10/07/2017 08:50 AM, Peter Gottlieb hpnpilot@... [hp_agilent_equipment] wrote: There was definitely a wave of these going cheap.听 That seems to happen with a
lot of stuff, 99.9% of which I miss when looking for something. Damn. I missed it too. But I bought my 8901B a very long time ago. The reason I'm not a big fan of this instrument is because although it can do
many things it doesn't seem great at any of them.听 Correct me if I'm wrong.听 As
a frequency counter a 5334B totally blows it away, as does a Racal 1992.听 In
digits, sensitivity, response speed and of course versatility.听 I even have a
5335 which I put one of those cheap cell site rubidium oscillators in because
there's so much space inside.听 As a power meter the 437/438 and of course the
E4418B seem far superior and are all available, like the 5334 and 5335 counters,
dirt cheap.听 That leaves modulation meter, which is why I picked up the 8901B in
the first place.听 Unless you're calibrating some piece of gear, a scope (for AM)
or a 53310A (for FM) are far easier and quicker to use and give you more
information.
So, while I have the nice clean 8901B, it mostly serves to keep the rack it's
mounted in from being too easy to move around.听 I'm not even incentivized enough
to track down why a good power sensor doesn't work right with the thing. The 8901B is a fine instrument; it helps to not think of it as a "do everything" box, though it does do a lot of random stuff. When I want to measure RF power, I turn on a power meter. When I want to measure frequency, I turn on a frequency counter. The fact that the 8901B does these things is almost incidental; they got at least some of that functionality "for free" in designing a modulation analyzer. So, it helps to think of it as just that...a modulation analyzer. For that, it does very well. But don't be tempted by its "I'll replace everything on your bench" feature list. Right tool for the job, etc. That said, though, for my applications, I can't tell you the last time I modulated a carrier "analog". ;) For that reason, my pristine 8901B sees almost no use. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
|
I got a boonton 8210 modulation meter dirt cheap a while ago.
|
toggle quoted message
Show quoted text
-----Original Message----- From: "xhfeng2002@... [hp_agilent_equipment]" <hp_agilent_equipment@...>
Sent: Oct 9, 2017 3:38 PM
To: hp_agilent_equipment@...
Subject: [hp_agilent_equipment] Re: 8901B Power level zeroisation
I got a Boonton 8210 modulation meter dirt cheap a while ago. I bought a Boonton 82AD Modulation Meter for under $40, but I haven't cleaned it up and tested it yet. Michael A. Terrell
|
Ok, so that worked, but what does percent mean for FM?听 kHz deviation would be more useful.
Peter
toggle quoted message
Show quoted text
On 10/6/2017 9:25 AM, Dennis Czelusniak czelusniakd@... [hp_agilent_equipment] wrote:
E1 is invalid key sequence if calibration is pressed while not in AM or FM.
8480 series sensors work with your unit, high priced 11722A not required.
If you have option 10, connect calibrator output to input, select AM, push
calibrate and wait, takes about 20 seconds, do the same with FM, display
reading will be 99.0 to 101.0%
Dennis
--------------------------------------------
On Fri, 10/6/17, matt.ames7bc@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
Subject: [hp_agilent_equipment] 8901B Power level zeroisation
To: hp_agilent_equipment@...
Date: Friday, October 6, 2017, 2:57 AM
Hi all,
I have an 8901B here that I use to
measure power with, using the internal power detector and
*not* the fancy external 11722A sensor.
When I have nothing connected to the
input, and I press the zero key, I get an Error
21.
Does anyone know what I am doing wrong,
and how to zero the internal power level
sensor?
Cheers,
Matt
|
Peter,
When FM Measurement is selected, the display will show peak deviation. The steps are outlined in the OP Manual under Section III Operation, Getting Acquainted.
Dennis
--------------------------------------------
toggle quoted message
Show quoted text
On Mon, 10/16/17, Peter Gottlieb hpnpilot@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
Subject: Re: [hp_agilent_equipment] 8901B Power level zeroisation
To: hp_agilent_equipment@...
Date: Monday, October 16, 2017, 10:11 PM
Ok, so that worked, but what does
percent mean for FM?听 kHz deviation would be
more useful.
Peter
On
10/6/2017 9:25 AM, Dennis Czelusniak czelusniakd@...
[hp_agilent_equipment] wrote:
>
>
>
E1 is invalid key sequence if calibration is pressed while
not in AM or FM.
> 8480 series sensors
work with your unit, high priced 11722A not required.
> If you have option 10, connect calibrator
output to input, select AM, push
>
calibrate and wait, takes about 20 seconds, do the same with
FM, display
> reading will be 99.0 to
101.0%
>
> Dennis
>
>
--------------------------------------------
> On Fri, 10/6/17, matt.ames7bc@...
[hp_agilent_equipment]
> <hp_agilent_equipment@...>
wrote:
>
> Subject:
[hp_agilent_equipment] 8901B Power level zeroisation
> To: hp_agilent_equipment@...
> Date: Friday, October 6, 2017, 2:57 AM
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
Hi all,
> I have an 8901B here that I use
to
> measure power with, using the
internal power detector and
> *not* the
fancy external 11722A sensor.
> When I
have nothing connected to the
> input,
and I press the zero key, I get an Error
> 21.
> Does anyone know
what I am doing wrong,
> and how to zero
the internal power level
> sensor?
> Cheers,
> Matt
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
------------------------------------
Posted by: Peter Gottlieb <hpnpilot@...>
------------------------------------
------------------------------------
Yahoo Groups Links
Traditional
听 听 (Yahoo! ID required)
听 听 hp_agilent_equipment-fullfeatured@...
|
Just coming back to the question 搘hat does percent mean for FM?�, the manual says: 揟he calibration factor will be displayed as a percentage. This percentage indicates the relationship between the HP 8901Bs measurement and the actual output of the Calibrator. (For example, a calibration factor of 100% indicates that the measured value is exactly the same as the calibrator output value. Likewise, a calibration factor of 100.17% indicates that the HP 8901B is measuring .17% above the Calibrator抯 actual output.)� TonyG Sent from Mail<> for Windows 10 From: Dennis Czelusniak czelusniakd@... [hp_agilent_equipment]<mailto:hp_agilent_equipment@...> Sent: Tuesday, October 17, 2017 5:29 AM To: hp_agilent_equipment@...<mailto:hp_agilent_equipment@...> Subject: Re: [hp_agilent_equipment] 8901B Power level zeroisation Peter, When FM Measurement is selected, the display will show peak deviation. The steps are outlined in the OP Manual under Section III Operation, Getting Acquainted. Dennis -------------------------------------------- On Mon, 10/16/17, Peter Gottlieb hpnpilot@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote: Subject: Re: [hp_agilent_equipment] 8901B Power level zeroisation To: hp_agilent_equipment@... Date: Monday, October 16, 2017, 10:11 PM Ok, so that worked, but what does percent mean for FM? kHz deviation would be more useful. Peter On 10/6/2017 9:25 AM, Dennis Czelusniak czelusniakd@... [hp_agilent_equipment] wrote:
E1 is invalid key sequence if calibration is pressed while not in AM or FM. 8480 series sensors work with your unit, high priced 11722A not required. If you have option 10, connect calibrator output to input, select AM, push calibrate and wait, takes about 20 seconds, do the same with FM, display reading will be 99.0 to 101.0%
Dennis
-------------------------------------------- On Fri, 10/6/17, matt.ames7bc@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
Subject:
[hp_agilent_equipment] 8901B Power level zeroisation To: hp_agilent_equipment@...
Date: Friday, October 6, 2017, 2:57 AM
Hi all, I have an 8901B here that I use to measure power with, using the internal power detector and *not* the fancy external 11722A sensor. When I have nothing connected to the input, and I press the zero key, I get an Error 21.
Does anyone know what I am doing wrong, and how to zero the internal power level sensor?
Cheers,
Matt
------------------------------------ Posted by: Peter Gottlieb <hpnpilot@...> ------------------------------------ ------------------------------------ Yahoo Groups Links Traditional (Yahoo! ID required) hp_agilent_equipment-fullfeatured@... [Non-text portions of this message have been removed]
|
Dave McGuire
Michael A. Terrell