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Hi all,

Is here someone kind enough to help me with
my HP8569B? I got it today and I am little
confused with frequency span button.
Although it is marked up to 500MHz I can not
set it to span greater than 10 MHz. It seems that
it is somehow mechanically blocked, there is a
small plastic rod going from analyzer's front
panel towards the span knob and ending inside it.
I did little research and figured out that this
rod is actually the thing that blocks the span button
from being turned further than to 10MHz span.

Shall I press something or do some other action to
disable that blocking?

Thanks for any advice.

Michal Vanka

Hi Michal,

i didn't knew the 8569, but be very careful with the knob,
make sure that there is no slight defect in the switch
which is probably repairable. if you use some force and
some parts broke (-maybe more than yet) than you have big problems.
i have heared about that, that hp plastic parts get very
brittle with the time, so be careful!

Jorgen


--- In hp_agilent_equipment@..., "michalvanka"



<michalvanka@y...> wrote:

--- In hp_agilent_equipment@..., "Jorgen Lund-Nielsen"
<dj0ud@w...> wrote:

Hi Jorgen,
I repaired it today. The knob was broken from the inside
and pieces of plastic limited its movement.
I had a hard time with pulling it from the spindle
as someone else had already tried to repair it using glue....

Michal

Hi Michal,

i didn't knew the 8569, but be very careful with the knob,
make sure that there is no slight defect in the switch
which is probably repairable. if you use some force and
some parts broke (-maybe more than yet) than you have big problems.
i have heared about that, that hp plastic parts get very
brittle with the time, so be careful!

Jorgen


--- In hp_agilent_equipment@..., "michalvanka"



<michalvanka@y...> wrote:

Hi all,

Is here someone kind enough to help me with
my HP8569B? I got it today and I am little
confused with frequency span button.
Although it is marked up to 500MHz I can not
set it to span greater than 10 MHz. It seems that
it is somehow mechanically blocked, there is a
small plastic rod going from analyzer's front
panel towards the span knob and ending inside it.
I did little research and figured out that this
rod is actually the thing that blocks the span button
from being turned further than to 10MHz span.

Shall I press something or do some other action to
disable that blocking?

Thanks for any advice.

Michal Vanka