ISC Hardware Revisions
Overview
The Integriti Security Controller (ISC) hardware has undergone significant architectural changes across revisions. Understanding these is critical for maintenance and upgrades.
Revision Comparison
| Feature | Rev A - E | Rev G - I | Rev J - K (IP ISC) |
|---|---|---|---|
| Memory Storage | Micro SD Card | On-board Flash | On-board Flash |
| Memory Portability | Yes (Removable SD) | No (Non-transferable) | No (Non-transferable) |
| PSTN Modem | On-board | On-board | Removed |
| Smart Card Holder | Hinged | Hinged with Lock | Hinged with Lock |
| Firmware V20+ | Supported | Supported | Supported |
| Min. Firmware | Any released | V3.3.17+ (See below) | V22.2.0+ |
Key Technical Differences
1. Memory Transition (Pre-Rev G vs. Rev G+)
The most critical change occurred with Revision G.
- Pre-Rev G: The database and review logs are stored on a 2GB Micro SD card. If the controller fails, the SD card can be moved to a matching replacement unit.
- Rev G and Later: Memory is soldered to the PCB. Micro SD cards from failed Pre-Rev G units CANNOT be used.
- Implication: Regular database backups via Integriti Pro/CS software are mandatory for Rev G+ units to prevent total data loss in the event of hardware failure.
2. Connectivity (The IP ISC)
Starting with Revision J, the ISC became the “IP ISC”.
- Modem Removal: The physical PSTN dialer modem was removed.
- Reporting: These units rely exclusively on IP reporting (Ethernet) or external communicators like the T4000 (connected via Port 0).
3. Power and Fuses
- Smart Fuses: Rev G and later replaced traditional physical fuses with self-resetting eFuses (Smart Fuses) for “LAN POS” and “DET+“.
- LED Indicators: L16 (Detector Fault) and L20 (LAN+ Fault) indicate when a smart fuse has activated due to over-current.