Hayes Microcomputer Products ASLH306 - Manual (Page 19)

ASL Holdings Limited 19/09/2005 19
Draft Copy Version 2c
LED Status (GSM Mode) Version 2.02 & 2.05
Red LED:
Off for module off.
On when unregistered with network.
Flashes when registered with network.
Green LED:
Slow flash is off line.
Fast flash is on line.
Yellow LED:
Off / Slow flash / On - with increasing signal level.
LED Status (GPRS Mode) Version 2.08 and above
When listening in GPRS you can identify the status of the unit :
Red LED:
Off for module off.
On when unregistered with network.
Flashes when registered with network.
Green LED:
Slow flash is off line.
Fast flash is on line. - not as fast as GSM online state, but faster
than in GSM offline state. Fast flash when not registered – low
supply voltage.
Very fast flash (Pulsing) – Full auto reset following loss of
network.
Yellow LED:
Off / Slow flash / On - with increasing signal level.
Short flash to indicate the difference between no SQ yet found
during initialisation and off indicating low Signal Quality.
On issue 3 hardware boards Signal Quality LED sensitivity now
set down to 10. (Was 12).
Technical Specifications
Configuration and Rates
9600 bps, 4800 bps, 2400 bps, 1200 bps.
Data Format
10 bit character length including parity, start and stop bits.
1 start bit.
7 or 8 data bits.