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Topic:
Tact Labs MK III 232 help
This thread has 2 replies. Displaying all posts.
Post 1 made on Tuesday June 15, 2010 at 02:20
Glackowitz
RC Moderator
Joined:
Posts:
May 2002
3,792
Hi all, I am having a tough time figuring out these 232 codes for a TACT MKIII preamp

anyone willing to give it a look?? I think if I see a couple of commands I can go from there

will be using a T4/RP-6/Cm-232

here is the 232 code sheet: [Link: dl.dropbox.com]
There's no worse feeling than that millisecond you're sure you are going to die after leaning your chair back a little too far.
Post 2 made on Tuesday June 15, 2010 at 19:41
mark65
Long Time Member
Joined:
Posts:
November 2003
450
There is a ton of useless information in this spec that's just there to confuse you.

For every command, bytes 0-4 are provided for you. The 5th byte and on are the parameters for a command. The las two bytes are the checksum. The checksum is simple addition.

So for power status:
07
01
30
02
00
If we add those together we get a sum of 3A. The unit wants to see a 2 byte sum. Because our sum is only one byte we need to add some leading zeros making the sum 003A. Next, the unit wants the bytes reversed, making the checksum 3A 00.
The complete string would be:
07
01
30
02
00
3A
00

Now let's try Select Analog Input 4:
08
01
30
04
00
04 (Decimal 4 converted to HEX)
41
00

I don't use RTI so your on your own for proper formatting.
OP | Post 3 made on Friday June 18, 2010 at 00:57
Glackowitz
RC Moderator
Joined:
Posts:
May 2002
3,792
Thanks Mark. Kinda what I figured but the check sum was throwing me off.

I think I see the light now

Thanks again
G
There's no worse feeling than that millisecond you're sure you are going to die after leaning your chair back a little too far.


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