TC4 High-Speed High-Performance HF VHF Data Modem
A compact, high-performance modem, the TC4 is intended for integration into LF and HF (VHF/UHF optional) radio transceivers and provides an optional 2G or 3G ALE controller. For users requiring a low cost hardware modem that includes all MIL-STD and STANAG compliant waveforms, the TC4 provides value and a robust solution.
Key Features
- Low cost installation (Hardware)
- Activation keys unlock software
- 9600 bps in SSB channel (3 kHz)
- 19200 bps in ISB channel (2 x 3 kHz)
- MIL-STD and STANAG compliance
- Low power consumption (1 W)
- Compact size (33x55x8mm)
- Single 100-way connector
Options
- 2G ALE
- 3G ALE
- 3G Packet Data
- V/UHF modem
Customisable Waveforms
TC4 waveforms can be customised by choosing from four LF/HF modem software options (M1-M4).
Data Modem Function
Adaptive equalization mitigates the effects of channel multi-path. Convolutional encoding and soft-decision Viterbi decoding provides forward error correction.
Cancellation of narrowband co-channel interference is accomplished via adaptive tone excision capable of eliminating up to four signals.
| PRIMARY INTERFACES* | USE | DETAILS |
| UART 1 | Data, Config, Control, or Raw Data (option) | Rate: 4800 to 115200 bps Electrical: 3.3V LVTTL Flow Control (Raw data only): CTS/RTS, XON/XOFF |
| UART 2 | Remote Control (when UART1 is Raw Data) | Rate: 4800 to 115200 bps Electrical: 3.3V LVTTL Flow Control: None |
| CODEC 1 | Baseband Audio USB (Analogue) | Tx (output): 40 Ω unbalanced 2.0 V p-p Rx (input): 10 kΩ unbalanced 1.5 V p-p |
| CODEC 2 | Baseband Audio LSB (Analogue) | Tx (output): 40 Ω unbalanced 2.0 V p-p Rx (input): 10 kΩ unbalanced 1.5 V p-p |
| MCBSP 0 | Data, Config, Control (option) | Synchronous serial I/F McBSP port |
| MCBSP 1 | Digital Baseband Audio (option) | Synchronous serial I/F McBSP port |
| DISCRETE OUTPUT | Radio Keyline | Active high |
| DISCRETE INPUTS | Radio PTT Sense | Active low |
| PPS (GPS Time Sync.) | Rising edge | |
| Reset / Power Down | Active low | |
| SPEED SELECT | Power Saving (Optional) | [3:0], Active low |
| POWER | Supply | 3.3 V DC |
* All TC4 interfaces via a single 100-way fine pitch connector (Samtec YFT-20-xx-H-05-SB).