[DSP-10] Sanity check for sequencer with transverter

[kd7ts]

On Mon, 17 Jun 2013 10:44:34 -0700, Don AE5K <donj at ae5k.us> wrote:

> Now, my thoughts about where the transverter should come is at step C  
> and J in the list above.  Alternatively, my friend says it should be at  
> E and H.
>  Comments?  Who is right, or does it make any difference?
>

Hi Don,

Just spent a bunch of time with this very question. I would take it in the  
order from antenna to DSP-10. There are two thing to avoid, transmitting  
into a receive mixer and switching the antenna relay while power (RF) is  
generated.

I tried to simplify the list by moving the delays to the lines where they  
apply. So ...

Switch ant relay to transmit, Rcv audio muted, receiver off,  Delay:  
(dly_ant2amp), default 50 ms. PIN 2
Turn amplifier on.          Delay: (dly_amp2xmit), default 75 ms. PIN 1
Place DSP-10 into transmit       Delay: 10 ms. fixed
DSP-10 transmit on

DSP-10 transmit off    Delay: (dly_xmit2amp), default 25 ms.
Turn amplifier off.         Delay: (dly_amp2ant), default 25 ms. PIN 2
Switch antenna relay to receiver   Delay: 2 ms. fixed PIN 1
Turn on DSP-10 receive hardware,  Delay: 20 ms. fixed (to remove pops),  
Audio unmuted

A complete R/T/R cycle is  A - G, G - A starting from receive.

There are only the outputs of PIN 1 and PIN 2 of the accessory jack, and  
if the requirement is to NOT "hot switch" the antenna relay, everything  
else will need to key from the "Power Amp on", PIN 1.

That is a really complex list, but when you boil it down, there are only  
PIN 1 and PIN 2 that are switching states.

It appears to me that the transverter and PA will have to double up on PIN  
1.

73 Mike KD7TS