MAESTRO S-VDR/VDR comprises of the following units depending on operating mode:
- SELMA MAESTRO S-VDR/VDR Main Control Panel Unit
- SELMA MAESTRO S-VDR/VDR Final Recording Medium Unit
- SELMA MAESTRO S-VDR/VDR UPS Unit
- SELMA MAESTRO VDR (only) PLC Unit
2. SELMA MAESTRO S-VDR/VDR – Final Recording Medium Unit
There are two types of recording mediums that can be used with the SELMA MAESTRO S-VDR/VDR, a fixed capsule and a float free capsule, with the former being mandatory for VDRs as well as new S-VDR installations.
Fixed Final Recording Medium Unit Schematics
Float Free Final Recording Medium Unit Schematics
Technical specifications
| Fixed Capsule Characteristics | |
| Property | Type-Value |
| Storage Capacity | 12 Hours min. |
| Memory | 2 GB (9 GB max.) |
| Oper. Temperature | -30°C … +65°C |
| Interface | Ethernet |
| Fire Protection | 1100°C 1 hour / 260°C 10 hours |
| Locator | Underwater Location Beacon |
| Labeling / Colour | Retro reflective Material / Fluorescent |
| Impact | 50g / 11ms |
| Immersion | 6000m depth |
| Float Free Capsule Characteristics | |
| Property | Type-Value |
| Storage Capacity | 12 Hours min. |
| Memory | 2 GB (9 GB max.) |
| Interface | Ethernet |
| Locators | Integral 406MHz GPS Beacon 121.5MHz Homing Transmitter |
| Battery | 7 Days |
| Labeling / Colour | Retro reflective / Fluorescent |
| Auto Release Module | Hydrostatic Release Unit (H.R.U.) Type |