Products > Test Equipment

TH2830 vs TH2832

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tautech:
Calling @tv84

Kean:
In addition to the JTAG connector, it looks like 2 SPI Flash chips, an EEPROM, and a FRAM are there on the PCB between the LPC1788 and the mains power filtering.

I don't really know anything about how this unit works, but would assume that one or more of those chips is storing some device and frequency specific calibration data that might be tricky to create...

Edit: and the Altera CPLD would contain its own programmed logic and additional flash memory contents that may different between model.

KungFuJosh:
I'm hoping the "easy" way of just getting a copy of the TH2832 firmware is all we need to do. From a production standpoint, they could do things differently for both models with identical hardware, but that ends up being more work. Especially since both are using the same PCBs and everything else. They would also have to keep track of variations on identically labeled boards, which wouldn't make sense.

The simplest thing to do is supply a different firmware and a sticker for the front of the unit.

You may say I'm a dreamer, but I'm not the only one. 😉

Martin72:

--- Quote ---Especially since both are using the same PCBs and everything else.
--- End quote ---

I will only believe this when we know that they are really identical down to the component level, i.e. the same resistance and capacitance values are present everywhere.
This is not a problem from a production point of view, to equip the pick-and-place machines according to the models.
Ludee would have to make better pictures of his TH2832... ;)

Kean:
If they are populated with different components, then I would expect some kind of production (manual) marking on the PCB to indicate that - like some silkscreen checkboxes.  Or at least some unpopulated components.

Of course some different valued capacitors could also affect oscillator/filtering operations and be hard to notice, but different firmware/gateware/calibration data is more likely.

Is there any further markings in the "text box" with the PCB revision etc hidden under the mains input jack?
Do any of the information screens show firmware revision, and if so what else do they show?

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