Network Status Indication - Quectel M12 Hardware Design

M12 Hardware Design
HIGH
LOW
Idle or talking
Figure 40: RI behaviour of URC or SMS received

3.13. Network status indication

The NETLIGHT signal can be used to drive a network status indicator LED. The working state of
this pin is listed in Table 19.
Table 19: Working state of the NETLIGHT
State
Off
64ms On/ 800ms Off
64ms On/ 2000ms Off
64ms On/ 600ms Off
A reference circuit is shown in the following figure.
M12_Hardware_Design_V3.3
RI
Module function
The module is not running.
The module is not synchronized with network.
The module is synchronized with network.
GPRS data transmission is ongoing.
Module
NETLIGHT
Figure 41: Reference circuit of the NETLIGHT
120ms
URC or
SMS received
VBAT
300R
4.7K
47K
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