PCM Telemetry Encoder
Jisnu's PCM Encoder will perform signal acquisition, conditioning and frame formation of different types of telemetry information signals that need to be transmitted from the Article as per IRIG-106 standard.
PCM Encoder has 4 different types of information signals as input:
- Analog signals
- Discrete signals
- RS-422 interface signals
- ARINC429 signals
Analog signals: Encoder will perform Signal conditioning, Sampling, Quantization and Analog to Digital conversion and converted digital information of analog signal will be placed into IRIG-106 standard frame.
Discrete signals: Encoder will perform signal conditioning, sampling, grouping of discrete signals into words and placing those discrete words into frame.
RS-422 Interface Signals: PCM Encoder will read, decode the information from RS-422 interface and place that information into frame.
ARINC429 signals: PCM Encoder will read the information from ARINC429 interface and place that information into frame.
PCM Encoder samples all input signals and formats them into frame according to the sampling rates of signals. The frame will sent to the transmitter in serial form.
Output of PCM Encoder will be NRZ-L and Bi-Phase-L coded.
- Data Acquisition & Recording
- Telemetering of Onboard systems
- Telemetering of Subsystems
- Acquisition of data from different kinds of external inputs
- Programmable sampling rates for different inputs as per IRIG 106 standards
- Programmable aggregate data rates
| Functional | |
|---|---|
| Number of Analog channels | up to 96 channels |
| Number of Discrete channels | up to 96 channels |
| ARINC-429 BUS Interface | 4 Nos |
| RS 422 Interface | 3 Nos |
| Bit Rate | 512 Kbps (maximum) |
| Word length | 16 bits (MSB First) |
| Frame length | Up to 8192 bits |
| Format length | 1-256 frames |
| Frame Sync | 7-33 bits |
| Format Sync | Binary Count 0 to 255 Frames ID |
| OUTPUTS | a) NRZ-L Data and clock buffered TTL Output |
| b) Biφ-L Output Data in TTL | |
| c) Biφ-L Output Data in RS-422 form | |
| d) Pre modulation filter output for transmitter | |
| Clock Output level | Bit rate clock at TTL Level |
| Delayed Data Transmission | 10 sec |
| Configuration | Through RS485 I/F |
| Input / Output connectors | MIL Grade circular, D -type & SMA |
| Electrical | |
|---|---|
| Operating Voltage range | 18-36 V |
| Nominal Voltage | 28V |
| Rated maximum input current | 2 Amp |
| Mechanical | |
|---|---|
| Mechanical outline (mm) | 180 mm L X 130 mm W X 186 mm D |
| Enclosure Material | MIL Grade Aluminium-T6061(HE-30) |
| Weight (Kg) | < or Equal to 4 kg |
| Chromatization | MIL-DTL-5541F Type II, Class 3 Chromatization |
| Environmental | |
|---|---|
| Temperature | |
| Operating | -30oC to +70oC |
| Storage | -30oC to +70oC |
| Humidity | 90% RH Non-Condensing |
| Environmental compliance | JSS-55555 / MIL 810D |
| EMI/EMC compliance | MIL-STD-461E |
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