3421A CAL RAM

[Dave Frederickson]

(04-05-2017 07:45 PM)J-F Garnier Wrote:  

(04-04-2017 05:16 PM)Dave Frederickson Wrote:  ... I loaded the CAL RAM with zeros (all @ characters) using the B3 command, ...

Which syntax did you use exactly with the B3 command? OUTPUT 1;"B3" then OUTPUT 1;A$ or OUTPUT 1,"B3"&A$ in one go?
That is: must the "B3" be terminated by CR/LF or must the 255 bytes immediately follow the "B3" string?
And must the last byte be sent as a HPIL END byte, as for the B2 read?

J-F

Hi J-F,

It was sent in one command, OUTPUT :1;"B3"&A$. The last nibble was also 0x40.

I also loaded Paul's data, unmodified, and it cleared my Cal RAM error.

Note, MarkL at EEVBlog has observed that the first nibble indicates the state of the Cal Enable switch. 0x40 = Disabled and 0x4F = Enabled.
http://www.eevblog.com/forum/repair/hp-3...-cal-sram/

Dave