Installation Guide

Stream Port Rate Word
0:User0 -- -- --
1:Modem 4:Radio 460800 8/N/1
2:User1 -- -- --
3:Debug 0:Aux1 115200 8/N/1
4:NMEA Out -- -- --
5:DUN 1:Aux2 460800 8/N/1
6:PEG Serial -- -- --
7:VBUS 10:Aux3 115200 8/N/1
8:GPS Rcvr 5:GPS 115200 8/N/1
9:AltMdm -- -- --
10:HostApp0 -- -- --
11:HostApp1 -- -- --
12:HostApp2 -- -- --
13:Undef. -- -- --
14:BlueTooth -- -- --
15:ATCmd-1 -- -- --
16:ATCmd-2 -- -- --
17:SatMdm -- -- --
18:SBB -- -- --
19:WSP -- -- --
3.4.5 Status LEDs
The HMU-3640™ is equipped with 4 Status LEDs; one for GPS, one for COMM (wireless network status), one for VBUS and
one for WiFi. The
LEDs use the following colors to indicate service:
Status LEDs
LED Status Color
1 WiFi/BT Blue
2 Comm Orange
3 VBUS Red
4 GPS Green
4 Configuration of the Vehicle Bus Interface
The VBU2 Vehicle Bus Interface embedded in the HMU-3640 is designed to support Heavy Duty (trucks and buses) vehicles.
Detection of operating
mode today is primarily based on the correct selection of the cable for the vehicle type.
https://puls.calamp.com/wiki/HMU-3640_Hardware_%26_Installation_Guide 13/27
In order to avoid vehicle interference from the device, ensure the correct cable is selected for the specific vehicle that the
device is installed into
The Heavy Duty vehicle mode emulates the CalAmp JPOD2 accessory for vehicles with Heavy Duty vehicle bus interfaces. In
this mode, the VBU2
interface will operate and communicate with heavy duty vehicle using protocols such as J1939. For detailed JPOD2 information,
refer to the JPOD2
Tutorial.
Refer to the steps below to properly install, configure and run VBU2 interface of the HMU-3640.
4.1 VBU2 Mode Configuration and Testing Instructions
1) The HMU-3640 firmware with the correct app id should be preinstalled on the device.
2) To configure HMU in forced JPOD2 (Heavy Duty) configuration:
ats178=13
at$app param 3352,0,1
3) Testing in forced VBUS configuration
enter the command
ats$app param 3352,0,1
for VPOD2, enter the command
ats178=9 - or 73 for debug
for JPOD2, enter the command
ats178=13
begin testing.
5 Configuration and Activation
This section details how to quickly get an HMU-3640™ provisioned and configured to point at a specific server. It is assumed
that a PEG script has
already been created and is being managed through LMU Manager or PULS™, the CalAmp Maintenance System.
We are making three assumptions to simplify the setup process:
You have created, installed and configured an LM Direct™ Server to receive messages from the HMU-3640™. (See LM Direct™