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)