XTS Keyboard/UCM
The XTS series have a Universal Crypto Module (UCM) and Keyboard/option board combo. Normally without hardware crypto, they will have the keyboard only option board, and the part numbers vary base on the model type (1.5,2,3).
Model Matrix
| XTS2500 Keypads | ||||
|---|---|---|---|---|
| P/N | TYPE | Model | BackLight | Description |
| 0104018J69 | 1.5 | Keypad | Bright | Motorola Part from Service Manual, no crypto |
| 7585776C02 | 2 | Keypad | Bright | Motorola Part from Service Manual, no crypto |
| 7585776C01 | 3 | Keypad | Bright | Motorola Part from Service Manual, no crypto |
| 0104020J49 | 1.5 | Kit, FM | Bright | This is a listed accessory kit |
| 0104020J50 | 2 | Kit, FM | Bright | This is a listed accessory kit |
| 0104020J51 | 3 | Kit, FM | Bright | This is a listed accessory kit |
| 0104024J45 | 1.5 | Unknown | Bright | 5 Algo, From an eBay auction |
| 0104024J44 | 2? | Unknown | Bright | Never seen this, inferred as model 2 |
| 0104020J51 | 3 | Unknown | Bright | 5 Algo, From an eBay auction |
| 0104027J01 | 1.5? | US Military | Dim | Never seen this, inferred as model 1.5 Night Vision |
| 0104025J11 | 2? | US Military | DIM | Never seen this, inferred as model 2 Night Vision |
| 0104025J12 | 3 | US Military | Dim | AES only, Night Vision, from a Facebook seller |
The above crypto parts are listed in the "Security Policy:Astro Subscriber UCM" Guide. Some part descriptions are a inference on my part as I've not seen them, they are designated with a ?. If something is wrong, please update it.
It's my understanding any of the UCM's can do any algorithms, they just need to be programed via a KVL3000+ or later keyloader.
The different model UCM's are the same, but lacking the Snaptron keys and polyester tape to hold them in. The LED's are missing in the 1.5 version as well, but the dropping resistors are present. This is due to the backlight for the LCD being sourced from the keypad. The CPU will simply tell the Keypad backlight on, and the keypad will take care of the rest.
Note the dim listed parts are for use with night vision, and will appear to be not working in daylight and barely visible at night. I've experimented with these and have reverse engineered a better soultion below.
Modification of Dim to Normal
There are a few UCM boards made for night vision equipment, and I reversed how to make these brighter by studying a couple good boards. It's basically some current limiting resistors and a regulator. In the dim UCM there is an addition of a 5v regulator which powers the LEDs rather than being powered via the B+ voltage of 7.5 volts.
