[Elecraft] KPA/100 displays wrong PS current (much lower)

[Don Wilhelm]

The current display on the K2 is only for the current used by the base 
K2.  I use it when testing the K2 for 'good health' and normal RF Gain, 
but during operating I see no need to monitor it on a regular basis.
The Base K2 will indicate Hi Cur if the current draw goes above the 
value set by the CAL CUR parameter, and will reduce power if that 
occurs.  Should you continue to get Hi Cur messages, that is an 
indication of something that should be investigated.

73,
Don W3FPR

On 4/24/2016 3:14 PM, Ioannis Kassotakis wrote:
> Thanks Don,
> That means that at HI PWR (>11 Watts) should disregard the displayed 
> PS current figures.
> I thought that KPA100 processor would communicate the I Sense back to 
> the MCU and display the correct current figure after rescaling. I 
> understand that is not the case.
>
> 73,
>
> Ioannis PA1EQP
>
> On Sunday, 24 April 2016, Don Wilhelm <donwilh at embarqmail.com 
> <mailto:donwilh at embarqmail.com>> wrote:
>
>     Ioannis,
>
>     The current display on the K2 indicates only the current for the
>     base K2, not for the K2 and KPA100 combination.
>     That is why you set the CAL CUR to 3.50 amps even though the
>     KPA100 will draw much more current.
>
>     Yes, the KPA100 does have a scaling on the amount of RF voltage
>     that is being detected.  That is used for power control and has
>     nothing to do with the current displayed.  The result of that
>     voltage is sent to the VRFDET signal in the K2 (Voltage of the RF
>     Detected).
>
>     73,
>     Don W3FPR
>