CalAmp 4230HBT Manual De Usuario
1/28/2015
LMU42x0 Hardware & Installation Guide PULS Wiki
https://puls.calamp.com/wiki/LMU42x0_Hardware_%26_Installation_Guide
21/47
The LMU’s and ioPOD;s outputs are designed to drive external relays. These outputs provide a highcurrent,
opencollector driver that can sink up to 150 mA each. These drivers may be used to drive external relays that
can then control vehicle functions such as door locks, fuel shutoff valves, sirens and lights. If additional
current is required to drive the relays, external circuitry can be added to source the current. This diagram is a
typical use of an output to drive a relay.
opencollector driver that can sink up to 150 mA each. These drivers may be used to drive external relays that
can then control vehicle functions such as door locks, fuel shutoff valves, sirens and lights. If additional
current is required to drive the relays, external circuitry can be added to source the current. This diagram is a
typical use of an output to drive a relay.
Sample Relay Wiring
3.6.4 Status LEDs
The LMU42x0™ is equipped with two Status LEDs, one for GPS and one for COMM (wireless network
status). The LEDs use the following blink patterns to indicate service:
status). The LEDs use the following blink patterns to indicate service:
LED #1 (Comm LED Orange) Definitions
Condition
LED 1
Modem Off
Off
Comm On Searching
Slow Blinking
Network Available
Fast Blinking
Registered but no Inbound Acknowledgement
Alternates from Solid to Fast Blink every 1s
Registered and Received Inbound Acknowledgement
Solid
LED #2 (GPS LED Yellow) Definitions
Condition
LED 2
GPS Off
Off
GPS On
Slow Blinking
GPS Time Sync Fast Blinking
GPS Fix
Solid