[Test-Equipment] PTS 040

[RJ Mattson]

Hi Nigel,
I've been going over the few pages (33) in my PTS040 manual.
Soon I'll have it memorized :-)
Pin 22 control might get me down to +3dBm at 50ohms.
The signal at that level will still be audible in the receiver.
The manual briefly mentions grounding Pin 42 will enable remote programming.
It would be easy to see if this disables the output.
My worry is there might be some future consequence by rapidly keying this
line.
Any opinion?
Happy New Year!
bob...w2ami
On Thu, Dec 29, 2011 at 5:16 AM, <GandalfG8 at aol.com> wrote:

> Hi Bob
>
> It sound like you might just have the System Section of the manual, that
> usually runs to around 30 pages and is model specific.
> It generally contains block diagrams with chassis layouts  and schematics
> for the PSU section.
>
> The full manuals include more detailed chapters for the various  internal
> modules, with schematics and parts lists.
> The good news is that some at least of those modules tend to be common  to
> different models so downloading the PTS160 manual, for  example, should
> provide additional useful information.
>
> Coming back to your query about keying/switching the oscillator  output, I
> was hoping to be able to refer you to an  appropriate interface on the
> remote control section, which should be  detailed in your section of the
> manual,
> but now see I may have been  over optimistic.
>
> There is an option for remote level control, which presumably also  applies
> also to the PTS040, on pin 22 of the BCD remote control interface, and I
> was thinking that grounding this might reduce the output to zero, but
> looking at the schematic for the OA output section in the PTS160 manual
> suspect
> this would not be the case, and that some experimentation would be
>  necessary.
>
> In practice it would probably be more straightforward just to build an
> interface buffer and key that, which would have the additional advantage
>  that
> it would also be available for other signals sources if you wanted to
> experiment.
>
> regards
>
> Nigel
>
> GM8PZR
>
>
> In a message dated 28/12/2011 01:13:19 GMT Standard Time, wn2ami at gmail.com
> writes:
>
> I do  have a complete 33 page user manual.
> The few schematics are certainly not  at the component level.
> With the exception of the power supplies, the  modules are just blank
> p/n rectangles showing the interconnecting node  lines.
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