Question to Nokta

Question to Nokta (Dilek):

Engineers who opened the Racer 2 said that it had a possibility of working on two frequencies.
(This feature is present, but deactivated)
Is it so?
Should we wait in the upcoming novelty of work in the simultaneous dual frequency mode?







Edited 3 time(s). Last edit at 11/29/2017 06:26AM by vfp7.

What site posted that info?

I kind of doubt that Makro (Makro makes the Racers, not Nokta, they make the Impact, OK, OK, their basically the same company) will be commenting on this, but interesting if true.

"..My forecast was brilliantly confirmed when I carefully
familiarized with the printed circuit board Racer 2!
The board is designed to operate at two frequencies simultaneously
(read: Fisher CZX)! But at the moment it is hardware and
software "cut" to work on one frequency!.."

"..Just before the very appearance of photos
PC board Racer 2, I sat and read the circuit
Fisher F75. I was very interested in the microcircuit
ADC from Analog Devices AD7687, which was used
in this device, so I found a datasheet on it and
carefully studied the parameters. There was a whole
a series of ADCs with AD7683 to AD7688 with different parameters,
but in the same buildings. The case is very specific -
a small 10-pin package! On the R2 card, this is
chip U13, and next one more seat
exactly the same chip U22.
At F75 one ADC, at R1 one ADC, at R2 there is one ADC,
and who will have two ADCs to serve four
channel DISCR1, DISCR2, GEB1, GEB2?
In addition, the board provides space for
microcircuits U24 and U25, most likely it will be
74HC4053D - analog keys to distribute
data streams: one frequency to the right, the second frequency to the left,
the third frequency is straight (joke!).
Yes, and connector P4 is suggestive: now the coil
connected through the "lower chakra", and that will be connected
through the "upper chakra", P4?.."

vfp7- Thanks for clearing that up for me. I was wondering the same thing.

vfp7-----Would you repeat that again (slowly) please?

vfp7 Wrote:
-------------------------------------------------------
> "..My forecast was brilliantly confirmed when I ca
> refully
> familiarized with the printed circuit board Racer
> 2!
> The board is designed to operate at two frequencie
> s simultaneously
> (read: Fisher CZX)! But at the moment it is hardwa
> re and
> software "cut" to work on one frequency!.."
>
> "..Just before the very appearance of photos
> PC board Racer 2, I sat and read the circuit
> Fisher F75. I was very interested in the microcirc
> uit
> ADC from Analog Devices AD7687, which was used
> in this device, so I found a datasheet on it and
> carefully studied the parameters. There was a whol
> e
> a series of ADCs with AD7683 to AD7688 with differ
> ent parameters,
> but in the same buildings. The case is very specif
> ic -
> a small 10-pin package! On the R2 card, this is
> chip U13, and next one more seat
> exactly the same chip U22.
> At F75 one ADC, at R1 one ADC, at R2 there is one
> ADC,
> and who will have two ADCs to serve four
> channel DISCR1, DISCR2, GEB1, GEB2?
> In addition, the board provides space for
> microcircuits U24 and U25, most likely it will be
> 74HC4053D - analog keys to distribute
> data streams: one frequency to the right, the seco
> nd frequency to the left,
> the third frequency is straight (joke!).
> Yes, and connector P4 is suggestive: now the coil
> connected through the "lower chakra", and that wil
> l be connected
> through the "upper chakra", P4?.."


haha!

OK, what if the board is actually the same one they used on the Impact, so not simultaneous frequencies, but frequency shifting?

The two 'missing' IC's, U24,25 look like they're not part of the main signal path. More likely related to 'add-ons' like the vibration-motor, backlight, 'flashlight', etc.
The extra A-to-D converter pads are possibly a fitment for an alternative part, eg a higher bit-count part, or a part from another manufacturer.