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| modem | SDN-300L3 & SMS-301 or SNM-1001L & SMS-301 |
| Fault Detection Time (maximum) | 0.5 seconds |
| Switchover Time (after fault detection) | Within 0.1 seconds typical RS-422 interface |
| Main Data Interfaces | Refer to the modems’ datasheets |
| IF Switching | Transmit IF: Switched by RF relay (1.5 dB max loss) Receive IF: Passive power splitting (7.0 dB max loss) |
| Dimensions | 1.7” H x 5.7” W x 4.1” D (4.3 cm x 14.3 cm x 10.4 cm) |
| Weight | 1.1 lbs (0.5 kg) |
| Power Requirements | +12 VDC @ 200 mA (max) |
| Approval | CE |
| modem | SDN-300L3 & SMS-301 or SNM-1001L & SMS-301 |
| Fault Detection Time (maximum) | 0.5 seconds |
| Switchover Time (after fault detection) | Within 0.1 seconds typical RS-422 interface |
| Main Data Interfaces | Refer to the modems’ datasheets |
| IF Switching | Transmit IF: Switched by RF relay (1.5 dB max loss) Receive IF: Passive power splitting (7.0 dB max loss) |
| Dimensions | 1.7” H x 5.7” W x 4.1” D (4.3 cm x 14.3 cm x 10.4 cm) |
| Weight | 1.1 lbs (0.5 kg) |
| Power Requirements | +12 VDC @ 200 mA (max) |
| Approval | CE |