When testing the 540EZ there was nothing between receiver output cable
and flash other than a Paramount hotshoe with 1/8" miniplug on the input
side. I don't think there's anything in that path except wire.
Chuck Norcutt
Jeff Keller wrote:
> The slave is just a switch that pulls the trigger voltage "low
> enough". The voltage you measure on a untriggered flash may not be
> closely related to how low the voltage has to go. (Tim mentioned
> putting diodes in series to test how low it has to go). The voltage
> level isn't necessarily related to quality. If there is a diode in
> series to protect against the wrong polarity of voltage, then the
> switch may not be able to pull the voltage as low and similarly if the
> flash has a protection diode, the voltage that its trigger has to be
> pullled down to, may be lower.
>
> If you have a multi-output hotshoe adapter it may also have protection
> diodes which make the voltage problem more likely to appear. So ...
> have as little between the slave receiver and the flash as possible.
>
> -jeff
>
> On 1/20/07, James Royall <jamesroyall@xxxxxxxxxxx> wrote:
>> Firstly, I've put up photos from the 4-day portrait course I did just
>> before Christmas. There's a few that are up there purely because I
>> wanted to include at least one of everyone on the course. Thanks to
>> William for the hotshoe pc socket adaptor - of course the college had
>> IR remote triggers that went straight into the hotshoe so I didn't
>> need to worry.
>>
>> web.mac.com/jamesroyall/iWeb/james photog/csm portraits.html
>>
>
>> ... it seems that the flash is
>> supplying the power and the receiver is just meant to a switch that
>> closes. Any ideas what it could be?
>>
>> Thanks,
>> James
>
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