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Inductive Modem Module (IMM)
Inductive modem telemetry is a proven technology for real-time communication between underwater devices and moored buoys. Early inductive modem systems were instrument-specific and highly constrained. The Inductive Modem Module (IMM) sets a new standard for inductive modem telemetry and opens the door to a new generation of compact, low-power devices for real-time applications. The IMM is designed to interface with existing devices or to be placed as a component on printed circuit boards in instruments such as the SBE 37-IMP, 37-IMP-ODO, 39-IM, and a growing selection of moored instruments made by other manufacturers.
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Key Features
- Highly integrated, low-cost OEM component
- Very low power: 15 mW active, 300 μW idle
- Compatible with all Sea-Bird Inductive Modem (IM) products
- User-enabled wake-up tone detect
- RS-232 or logic level serial interface
- Optional hardware handshake lines (1 open collector output, 1 input).
- Binary data support.
- 8 Kbyte FIFO reply buffer
- Supports direct cable connection to IM line with additional transformer
- User-adjustable timeouts and delays
- 120 bytes/second IM transmission for characters > 0x20, TAB, CR, and LF.
- Multiple transmit power levels
- IM line status monitor detects transmitting devices
- Sea-Bird’s field-proven IM telemetry, with more than 3000 Sea-Bird IM instruments deployed since 1997
- Five-year limited warranty
Specifications
| Specification | Value |
|---|---|
| Communication Options | RS-232 |
| Onboard Memory | Yes |
| Memory Capacity (Samples) | 16 KB |
| Power Consumption | 4 mA with 100 turn ICC; 12 mA with 20 turn ICC |
Accessories
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