On Mon, 09 Jun 2014 12:03:54 -0700, Jim Thompson
<To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:

>I have a customer using _Microcap_ who claims that this notation....
>
>.PRINT AC DB(V([OUT])/V([IN_AMP]))
>
>means print the dB DIFFERENCE between V(OUT) and V(IN_AMP).
>
>I can't find such notation in the reference manual.
>
>Can this be correct?
>
>(I created a Spice model for the customer.  Models runs on all brands
>of Spice EXCEPT Microcap which gives an "underflow" error.)
>		
>                                        ...Jim Thompson

Per Andy Thompson of Spectrum, throw-up solved by adding...

         .OPTIONS NUMERIC_DERIVATIVE

(I always use CAPS in option lines and models... the UNIX/Eunuchs
crowd cause me all kinds of grief with everything lower case... you
can't easily tell a "1" from an "l" in many fonts :-)
		
                                        ...Jim Thompson
-- 
| James E.Thompson                                 |    mens     |
| Analog Innovations                               |     et      |
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    |
| San Tan Valley, AZ 85142     Skype: skypeanalog  |             |
| Voice:(480)460-2350  Fax: Available upon request |  Brass Rat  |
| E-mail Icon at http://www.analog-innovations.com |    1962     |
             
I love to cook with wine.     Sometimes I even put it in the food.

On 09 Jun 2014 19:55:55 GMT, Miros?aw Kwa?niak
<mirek@uv.ikem.pwr.wroc.pl> wrote:

>In sci.electronics.design Jim Thompson <To-Email-Use-The-Envelope-Icon@on-my-web-site.com> wrote:
>> I have a customer using _Microcap_ who claims that this notation....
>> 
>> .PRINT AC DB(V([OUT])/V([IN_AMP]))
>> 
>> means print the dB DIFFERENCE between V(OUT) and V(IN_AMP).
>
>http://www.spectrum-soft.com/faq/help/faq149.shtm
>Difference  between dB(V(OUT)) and dB(V(IN_AMP))
>;)

Something is throwing up a "underflow" error.

Same netlist with only a .DC analysis call instead of a .AC call works
just ducky.

Andy Thompson of Spectrum Software is now involved, so we'll find out
the problem... I hope.
		
                                        ...Jim Thompson
-- 
| James E.Thompson                                 |    mens     |
| Analog Innovations                               |     et      |
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    |
| San Tan Valley, AZ 85142     Skype: skypeanalog  |             |
| Voice:(480)460-2350  Fax: Available upon request |  Brass Rat  |
| E-mail Icon at http://www.analog-innovations.com |    1962     |
             
I love to cook with wine.     Sometimes I even put it in the food.

In sci.electronics.design Jim Thompson <To-Email-Use-The-Envelope-Icon@on-my-web-site.com> wrote:
> I have a customer using _Microcap_ who claims that this notation....
> 
> .PRINT AC DB(V([OUT])/V([IN_AMP]))
> 
> means print the dB DIFFERENCE between V(OUT) and V(IN_AMP).

http://www.spectrum-soft.com/faq/help/faq149.shtm
Difference  between dB(V(OUT)) and dB(V(IN_AMP))
;)

I have a customer using _Microcap_ who claims that this notation....

.PRINT AC DB(V([OUT])/V([IN_AMP]))

means print the dB DIFFERENCE between V(OUT) and V(IN_AMP).

I can't find such notation in the reference manual.

Can this be correct?

(I created a Spice model for the customer.  Models runs on all brands
of Spice EXCEPT Microcap which gives an "underflow" error.)
		
                                        ...Jim Thompson
-- 
| James E.Thompson                                 |    mens     |
| Analog Innovations                               |     et      |
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    |
| San Tan Valley, AZ 85142     Skype: skypeanalog  |             |
| Voice:(480)460-2350  Fax: Available upon request |  Brass Rat  |
| E-mail Icon at http://www.analog-innovations.com |    1962     |
             
I love to cook with wine.     Sometimes I even put it in the food.