Re: TM751 Problem

[Charles Sullivan <cwsulliv@xxxxxxxxxxxx>]

I think the firmware in all of these X10 remotes and transceivers
has been changed from time to time so it's difficult to make
any definitive statements.  For example a single RF burst to
a RR501 I have now (date code 04A03) yields a 6% dim whereas
the same to a 1997-vintage Radio Shack lookalike or a TM751 (date
code 04D15) yields a 12% dim.

I should mention that most of the recently-acquired X10 stuff
I have came from X10's "super deals" (which may be their way of
reducing inventory of older-rev or prototype stock).  The HR12A
(sends 6 RF bursts minimum) and TM751 came with the Firecracker
"shipping-only" deal they had about a year ago.

Here's some data I took, counting the RF bursts with an MR26A
and the power line dims with a CM11A.  There are some obvious
differences from the data you've observed with your units.

              Dim level sent by
RF           transceiver (percent)
Bursts      RR501    CM15A   TM751*
-------     -----    -----   -----
 1           6%       6%      12% <== SS13A
 2           6       12       12
 3           6       12       12
 4          12       15       12
 5          12       18       12  <== CM17A "Firecracker"
 6          17       22       12  <== HR12A PalmPad
 7          22       25       12
 8          22       28       24 (two 12% dims)
 9          27       30       24
10          27       34       24

(*) The TM751 sends out one 12% dim (as reported by the
CM11A) for every so many repeats or fraction thereof - at
least the unit I have in hand right now labeled P10485B
(date code 04D15).  (It's the only TM751 I've seen which has
the firmware revision labeled on the outside.)

Regards,
Charles Sullivan


On Wed, 09 Nov 2005 20:03:44 +0000, Dave Houston wrote:

> All of my HR12A (X-10 brand) send 5 copies of the RF code with a quick tap.
> Combination remotes (e.g. 8-in-1), the SH624 and others send a single code
> with a quick tap.
>
> The TM751 will respond to 1 or 5 copies by sending 3 contiguous dims (12%).
> It takes 550ms to send 3 contiguous dims. The RR501 will respond to 1 copy
> with 12% but to 5 copies with 18% (733ms).
>
> I suspect the difference may be due to the fact that the RR501 can store a
> code (maybe two codes) but I haven't explored this in depth. I'll try to
> look at it using my CM15A breakout cable and a breadboard.
>
> Charles Sullivan <cwsulliv@xxxxxxxxxxxx> wrote:
>
>>It might be a difference in the remotes.  Newer PalmPads
>>transmit a minimum of 6 RF bursts with the quickest tap of a
>>button.  A Radio Shack branded "PalmPad" purchased about 8 years
>>ago can be made to transmit only 1 RF burst with a quick tap.