Difference between revisions of "V.24 Level Shifter Board"
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[[Category:Quantar]] | [[Category:Quantar]] | ||
− | + | [[Category:Wireline]] | |
+ | [[Category:Astro-Tac]] | ||
This is a page about the v.24 level converter I made to be fully drop in replacement for the OEM board. | This is a page about the v.24 level converter I made to be fully drop in replacement for the OEM board. | ||
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* Internally ESD (15kv) protected design - meets or exceeds the OEM v.24 daughter card or other designs based on the MC145406 | * Internally ESD (15kv) protected design - meets or exceeds the OEM v.24 daughter card or other designs based on the MC145406 | ||
* Fits in the front or back ports of the Wireline board without contacting or putting pressure on other compntes on the wireline board. | * Fits in the front or back ports of the Wireline board without contacting or putting pressure on other compntes on the wireline board. | ||
+ | * Builtin v.24 network tap for debugging (both RJ-45's are connected to the lines.) | ||
* Not a Graham Cracker. | * Not a Graham Cracker. | ||
+ | == Tested Config == | ||
+ | |||
+ | * Quantar/Quantro base station | ||
+ | * PDR3500 Base station | ||
+ | * AstroTAC 3000 Comparator <ref>this needs the CD line asserted</ref> | ||
Tested with TRN7477, TRN7667, CLN6955, CLN6956 and CLN7343 wireline boards. | Tested with TRN7477, TRN7667, CLN6955, CLN6956 and CLN7343 wireline boards. | ||
+ | |||
+ | = notes = | ||
+ | |||
+ | The Astero-Tac 3000 needs CD active to put the port active. | ||
= Background info = | = Background info = |
Revision as of 21:21, 15 May 2024
This is a page about the v.24 level converter I made to be fully drop in replacement for the OEM board.
Features
- Full OEM Compatibility - This will work in place of the OEM board
- Includes a relay so that the station can originate clock _OR_ be clocked by DCE.
- Simple design - Affordable and easy to assemble, only one IC
- The following can be done via dip switch at the RS232 level
- CD asserted and tied to MARK or SPACE
- Tie TXCLK and RXCLK together - this allows a station to connect to another which is set to not send TX clock
- Tie CTS and RTS together - needed in some cases for certain v24 to DCE connections
- Built in cross over port to connect two stations directly without needing a crossover adapter.
- Internally ESD (15kv) protected design - meets or exceeds the OEM v.24 daughter card or other designs based on the MC145406
- Fits in the front or back ports of the Wireline board without contacting or putting pressure on other compntes on the wireline board.
- Builtin v.24 network tap for debugging (both RJ-45's are connected to the lines.)
- Not a Graham Cracker.
Tested Config
- Quantar/Quantro base station
- PDR3500 Base station
- AstroTAC 3000 Comparator [1]
Tested with TRN7477, TRN7667, CLN6955, CLN6956 and CLN7343 wireline boards.
notes
The Astero-Tac 3000 needs CD active to put the port active.
Background info
https://www.ti.com/lit/an/slla544/slla544.pdf
https://www.analog.com/en/products/max3185.html
https://www.analog.com/media/en/technical-documentation/data-sheets/MAX3185.pdf
good:
https://electronics.stackexchange.com/a/649122
https://www.ti.com/lit/ds/symlink/tl145406.pdf
- ↑ this needs the CD line asserted