MW-1000™ User Guide
40
GPS
26.
What is my GPS accuracy?
GPS accuracy depends on a host of parameters - environmental factors to your vehicular speed.
In an open-sky moving vehicular conditions, we observe the GPS accuracy to be b/-
1.5mts. (For further information on GPS accuracy refer:
http://wiki.openstreetmap.org/
CAN
27.
What type of CAN adapter can be used?
MW-1000 supports PEAK CAN adapter for connecting to vehicle-CAN bus. Refer to the following
link for recommended PEAK-CAN adapter details: http://gridconnect.com/can-usb.html#
BSM
28.
How do I know if I am receiving BSMs?
BSM transmission/receive functionality on the MW-1000 can be checked via asd_stats
command in your terminal.
Login into your MW-1000 terminal
Key-in following command
> asd_stats -b
"Num Tx", "Num_Rx" variables listed under "BSM Data" define the number of BSM
WSM-packets sent/received by MW-1000, since boot-up time.
29.
BSM messages transmitted from an MW-1000 (or other OBU) is not received/logged in
another MW-1000 (or other OBU)
Following factors could have contributed to loss of data at receiving MW-1000 side.
Check if both the MW-1000 boards are powered up and their Power/BSM-Tx LEDs are
glowing. In case if you detect any error here, refer to corresponding FAQ for further
instructions.
Incorrect security settings. Ex: Each of the MW-1000 might be on different security-sign
status (signed/unsigned), or one/both MW-1000 certificates are missing/invalid, etc.
Connect a wireless sniffer or a third OBU to check for information transmission over the
air (to check if Transmitting or Receiving OBU has an issue)
Check for DSRC antennas connection. DSRC hardware might have some issues, try
replacing the antennas on both the OBUs.
In case if receiving OBU is not logging the data, check for disc-utilization, logging-status
on the MW-1000 unit.
Check for channel-configuration information (PSID) of the BSM. Both the transmitting
and receiving BSM must have same channel-number. Note: channel configuration
parameter for secured/unsecured BSM data is different. compare the same
configuration parameter on both the ends.
