Ok, I've searched all over the board and have found no date on it., other than "Copyright 1988".
As for the chips in it, well, other than the standard chips probably in every model, here's what I've found that might help, they're in sockets. MK48Z02B25 - CMOS 2K x 8 XEROPOWER SRAM NMC27C128BQ250 - High Speed Version 131,072-Bit(16k x 8) UV Erasable CMOS PROM (Basically 128K) And this one I'm not sure why it's in a socket, I can't imagine it needing to be removed. MC6840P - Programmable Timer Module Maybe the "6289" handwritten on the label is suposed to be a date, but other than that all I can find is a number stamped onto the board that looks like a serial number, "08901009" There is a big blank spot where, according to what I've read, there is supposed to be an AC->DC converter, but mine doesn't have the AC feature. I haven't actually checked the bottom side, but I don't imagine they would have printed it there. On the plus side, my CSI-32 has a custom made internal switch to change the COS from high or low trigger. I was annoyed because it only takes a high trigger and my repeater has a low trigger. so I added a little board with a dpdt switch and transistor inverting circuit. Jeff, KB1SPH / WQEX694 On 7/12/2010, "skipp025" <skipp...@yahoo.com> wrote: > > > >> "Jeff Lavoie - KB1SPH/WQEX694" <kb1...@...> wrote: >> Thanks Skipp, that helps a great deal. I've found a lot of >> useful information on repeater-builder.com over the years, > >Hi Jeff, >Just don't buy a car from any of us and you'll be fine. > >> I was wondering if you had any information about a >> CSI-32 tone panel and possible firmware upgrades. The >> EPROM inside has a sticker on it that says the >> following. >> 128 v4.0 >> 6289 (I think, hard to read) >> © CSI > >In regards to the CSI (Lynnwood Washington CSI, not the Ventura >CA. CSI) brand of Repeater Tone/DCS Controllers. The latest >firmware version is based on the PC Board date of construction, >which is most often silk screened in white ink right on the board. > >V4.0 was one of the last firmware versions available for most >of the CSI-32 Controllers. As time allows I could check my files >for firmware information but I would need to know your pc board >date code in addition to all the other details. Right now I'd say >the 4.0 stuff is pretty much it in regards to updates. > >cheers, >s. > > > >------------------------------------ > > > >Yahoo! Groups Links > > >
