Two different procedures are available for the ALE (automatic link establishment) radio processor:
- ALIS (
Rohde & Schwarz proprietary standard) - ALE (in line with MIL-STD-188-141 B)
One of these ALE standards can be loaded into the Processor R&S®GS2200.
Using the Rohde & Schwarz automatic radio link setup and continuous link quality monitoring procedure of ALIS (automatic link setup) along with the R&S®XK2000 transceiver family makes it possible to achieve unequaled operating features.
- Simple operation by entering a 4-digit address
- Realtime channel analysis
- Best-channel calculation and setting
- Automatic link setup
- Ongoing channel monitoring
- Adaptive response in case of interference
- 100% error-free transmission
With the ALIS software selected, the Data Link Processor R&S®GS2200 can perform the following functions:
- Automatic continuous passive channel analysis of all user-programmed pool frequencies during scanning mode
- Automatic channel selection by means of computation of the optimum working frequency from a pool of frequencies
- Automatic reliable and fast link setup through narrowband FSK (BW = 300 Hz, shift = ±85 Hz) at the optimum frequency from the pool
- Selective calling addresses (up to 9999)
- Automatic transmission of status
- Type of modulation
- Speed of data transmission
- Type of data protection (FEC, ARQ, PRP)
- Automatic error correction (ARQ or PRP) and adaptive response during message transmission, either at a data rate of 228 bit/s (normal FSK modulation, basic feature) or 5400 bit/s (with additional HF data modem)
- Data transmission format
- 5 bit Baudot (telex)
- 7 bit ASCII (text files from PCs)
- 8 bit ASCII (text and binary files, etc)
- Message length: unlimited
- SSB voice operating capability after automatic link setup procedure (no adaptive response during voice operation)
Depending on the requirements:
- Preferred or existing method
- Link setup with or without adaptive response
- Response to interference on the radio link (ARQ)
- Considerations of frequency economy, spectrum pollution and probability of intercept
- Operator convenience, error correction and expandability
- Interoperability with other systems and systems from other manufacturers
- Rohde & Schwarz standard ALIS
- MIL-STD-188-141B, App. A (FED-STD-1045/1046)
- MIL-STD-188-141B, App. A + B (FED-STD-1045/1046/1049)
