The SRU is built on the same hardware as commercial Sony
Ericsson mobile phones. This means that the SRU delivers precisely the same
signal strength readings as the commercial phones, using identical circuitry.
More generally, being equipped with identical hardware, the SRU has no need to
simulate any part of the phones scanning procedure in software.
Furthermore, since it is devoted to the task of scanning, the SRU vastly
outperforms commercial phones in terms of scanning speed and update rate.(Phones
do not scan any more than what is required to maintain good radio performance.)
The SRU is fully on a par performance-wise with scanners based on dedicated
hardware.
In GSM networks, the SRU undertakes RSSI scanning of selected
channels or entire GSM bands. BSIC decoding can optionally be done whenever
possible.
For WCDMA, the SRU performs CPICH scanning on up to 12
carriers at a time. A snapshot of System Information Message can be taken once
for each cell camped on. Furthermore, a special BCH scanning mode is
available for continuous monitoring of System Information. The latter is useful
for example when conducting a close-up investigation of parameter settings.
The SRU contains an Ericsson F3607gw Mobile Broadband Module supporting
frequency bands as follows:
GSM 850/900/1800/1900 MHz
WCDMA 900/1900/2100 MHz (Europe) or 850/1900/2100 MHz (US)
