Here's a question for you DIU Expert(s):
Regarding the encryption modules for the ASTRO DIU and the DIU3000...
In their respective service manuals, Motorola gives battery life expectancies for both the older style EMC cartridge that used a 9 volt battery, as well as the current UCM module that utilizes a 3 volt button cell. It states that the battery life expectancy (in both cases) is 5 years, IF the EMC/UMC covers remain closed. Otherwise, battery life drops to 3 years.
Why in the heck does opening the covers on the EMC/UMC cartridges vs/ keeping them closed affect battery life? And, I think (but I’m not sure!) that this is the case regardless if the EMC/UMC cartridge is, or is not, inserted into the DIU, or just lies on the shelf.
My only guess is that if one opens the cover on the EMC/UMC, the battery goes into effect (e.g., drags some small amount of current) because it has to retain key memory for a period of time before the tamper circuitry destroys the key memory? This way, if the cover remains closed at all times, you are just looking at pure shelf life, as there would be no current flow since there would be no tamper issue?
Larry
- Board index Motorola System Infrastructure (Consoles, Base Stations, Repeaters, Trunking, etc.) Base Stations, Repeaters, General Infrastructure
- Search
-
- It is currently Thu Oct 31, 2024 2:59 pm
- All times are UTC-08:00
DIU Cartridge Bizarre Issue!
This forum is for discussions regarding System Infrastructure and Related Equipment. This includes but is not limited to repeaters, base stations, consoles, voters, Voice over IP, system design and implementation, and other related topics.
Moderator: Queue Moderator
-
- Posts: 1825
- Joined: Tue Nov 05, 2002 12:32 am
Return to “Base Stations, Repeaters, General Infrastructure”
Jump to
- Administrative
- ↳ Announcements and Forum News
- ↳ Forum Rules
- General
- ↳ General Motorola Solutions & Legacy Radio Discussion
- ↳ Radio Programming
- ↳ Software & Firmware Releases & Issues
- ↳ Codeplug Information
- ↳ NFPA 1802 Discussion
- Current Motorola Solutions Public Safety / Astro Product Line
- ↳ APX NEXT
- ↳ APX Series Subscribers
- ↳ ASTRO Series (Astro Saber, Spectra, XTS3000/3500) Subscribers
- ↳ ASTRO25 Series (XTS/XTL 1500/2500/5000) Subscribers
- ↳ ASTRO Experimental - How to do things a little out of the box
- ↳ ASTRO Products Feature Requests & Future Speculation
- ↳ Legacy Batboard Motorola ASTRO (VSELP/IMBE/AMBE) Equipment Forum
- Current Motorola Solutions Professional / Business Product Lines
- ↳ MotoTRBO ION Devices
- ↳ Motorola CP/CM Series Subscribers
- ↳ MotoTRBO Portables and Mobiles (4xxx/6xxx) 1.0 Series Subscribers
- ↳ MotoTRBO Portables and Mobiles (3xxx/5xxx/7xxx/SL) 2.0 Series Subscribers
- ↳ MotoTRBO Repeaters, Trunking, and Site Infrastructure
- ↳ MotoTRBO 3rd Party Application Discussion & Support
- ↳ MotoTRBO/Business Products Feature Requests & Future Speculation
- ↳ Experimental - How to do things a little out of the box
- Motorola System Infrastructure (Consoles, Base Stations, Repeaters, Trunking, etc.)
- ↳ Smartnet/Smartzone/Project 25 (Phase I/II) Systems
- ↳ Base Stations, Repeaters, General Infrastructure
- ↳ Consoles
- ↳ Experimental - Mods, and how to do things a little out of the box
- ↳ Infrastructure Product Feature Requests & Future Speculation
- Focused Discussion
- ↳ Motorola Digital and Voice Paging
- ↳ Converting Motorola Equipment to 900MHz Amateur
- ↳ Test Equipment & RF Equipment Alignment
- ↳ Vehicle Radio Installs
- ↳ Experimental and Next Generation LMR
- ↳ Motorola Digital Radio Compatability
- Off-Topic Discussion
- ↳ Vehicle Warning Equipment Discussion
- ↳ Computer/Technical Assistance
- ↳ Knowledge Base