CDU lights where is 'DSPY' ??

[Peter Hein]

Hi,

please help in finding the read offset for the "DSPY" FMC light, the one
above the "FAIL" light.

Thanks

Peter

[Enrico Schiratti]

As far as I know, that light is not in use in the real
aircraft (at least according to Mr. Bulfer)


"Peter Hein" wrote in message
news:384638.77178@wb.onvix.com...
> Hi,
>
> please help in finding the read offset for the "DSPY" FMC
> light, the one
> above the "FAIL" light.
>
> Thanks
>
> Peter
>
>

[Peter Hein]

Thanks Enrico for your reply.
I´ve got the "Big Boeing FMC User Guide" from Bill Bulfer.
According to this (Last page outfold): "DSPY indicates the active lateral or
vertical leg or performance mode is not displayed on the current CDU
page"

Anyway I can live without it. But what do the FMCs route that lamp to
generally?
I mean, for example, the plug and play FMC from Flightdeck solutions.
Any idea??

Thanks

Peter

[Enrico Schiratti]

> Anyway I can live without it. But what do the FMCs route
> that lamp to
> generally?
> I mean, for example, the plug and play FMC from Flightdeck
> solutions.
> Any idea??

I do not know what you mean by "route", but if they use a
keyboard emulator then they only have three keyboard lights
usually... and those are used for EXEC, FAIL and MSG.

[Peter Hein]

Hi Enrico,

with "route" I meant "mapping". Sorry that expression comes from the FSBus
router.
I´ve seen that Flightdecksolutions HW CDU has got the 4 lights, at least the
front panel looks alike.

Any idea where to the DSPY light might be mapped (offset?)

Thanks

Peter

[Enrico Schiratti]

> with "route" I meant "mapping". Sorry that expression
> comes from the FSBus
> router.
> I´ve seen that Flightdecksolutions HW CDU has got the 4
> lights, at least the
> front panel looks alike.
>
> Any idea where to the DSPY light might be mapped (offset?)

None. How can it be mapped if it uses a keyboard encoder?
Why not ask FDS?

[Charles Swafford]

Hi Peter,

The circuit board on my 737 CDU from Flightdecksolutions has
provisions for DSPY, but only EXEC and MSG are populated with LEDs.

Thanks,
Ed

[Peter Hein]

Thanks Ed. So I won´t bother Enrico any longer.

Best rgds

Peter