[Kenwood] Using SM-220 with TS-940

[Peter A Markavage]

I won't repeat what Alan said in his mail since it's good useful
information. You also asked, "As far as the waveform monitoring goes, is
it possible to have the scope trace the TX waveform like the Icom 781
does, for instance?  (It has the peaking waveform centered in the
display)". The pan adaptor junction is disabled during transmit due to
design limitations in the transceiver and the SM-220. The pan function is
"cute" but not highly accurate as a test instrument. The SM-220 shines as
a very good monitor of your transmitted waveform when using a
transmitter/transceiver and it's even more important when your equipment
is used in conjunction with a linear amplifier.

Pete, wa2cwa
 
On Mon, 10 Nov 2003 00:15:34 -0500 "Chris \"Zap\"" <zap@columbus.rr.com>
writes:
> Greetings,
> 
>     I just recently purchased a SM-220 monitor scope to use with my 
> TS-940.
> However, I appear to be having a few problems getting everything 
> running
> properly, and I also had a few questions about the scope's 
> functionality.
> 
>     My scope has the BS-8, so I should be able to use the Pan 
> display.
> However, the only cables that came with the scope were a coax cable 
> to
> connect between the rig and the scope (for TX monitoring) and a 
> simple RCA
> cable for the IF output.  I currently have the RCA connected between 
> the
> scope and IF out 1.  Do I also need the RCA from IF out 2 to connect 
> to the
> Vertical input for the pan to work properly, or is that only for 
> monitoring
> the incoming signal?  Additionally, the book with the scope informs 
> me that
> the adapter kit for the BS-8 was supposed to come with another 
> graticule for
> the display.  Needless to say, I only have one graticule, and that 
> is the
> one installed on the scope.  How can I tell which one I do not have, 
> and is
> it even possible to find the other one?  How do they differ?
> 
>     As far as the waveform monitoring goes, is it possible to have 
> the scope
> trace the TX waveform like the Icom 781 does, for instance?  (It has 
> the
> peaking waveform centered in the display).  What I have been able to 
> have my
> SM-220 doing is presenting me with a rolling waveform, as it is 
> transmitted.
> What the problem I can see with this is, that before I can really 
> see what
> is going on, the waveforms have scrolled off the screen!  Any advice 
> on how
> to better use this excellent scope to my advantage are appreciated!  
> I'm
> currently using HP oscilloscopes in my electronics lab (I'm an EE 
> student)
> so I am fairly familiar with the terminology.
> 
> Thanks & 73,
> Chris, N9WIV