
FASTRAK MANUAL
Rev. G
54
JUNE 2012
‘l’ – Active Station State
Syntax:
l
station
,[state]<>
or
l
station
<> to read back the current station state
Description:
A
station
is defined as a transmitter/receiver pair. The four receivers paired with
the one transmitter are assigned station numbers one through four (1-4). Although
stations are enabled simply by plugging the receivers into the ports on the
FASTRAK SEU, the stations can then be disabled (or enabled again) by using a
software command. When a station is enabled, data records for that receiver will
be transmitted from that station. If the station is disabled, no data records from
that station will be transmitted.
Purpose:
The purpose of this command is to allow the host to turn a station “on” or “off” in
software. The command parameters are identified as follows:
station
1 to 4
state
0 = off
1 = on
Relatives:
None.
Default:
The default condition depends on the number of receivers that are currently
connected to the FASTRAK SEU. The default condition of a station that has a
receiver connected to it is a “1” or station “on”. The default condition of a station
that does not have a receiver connected to it is a “0” or station “off”.
Example:
A user could connect four receivers to a FASTRAK and then collect a data point
from two receivers at a time, after disabling the other two. To do so, the following
commands would be sent:
1.
Send the command l3,0<> to turn station 3 off.
2.
Send the command l4,0<> to turn station 4 off.
3.
Press P to collect a data point from stations 1 and 2.
4.
Send the command l3,1<> to turn station 3 on.
5.
Send the command l4,1<> to turn station 4 on.
6.
Send the command l1,0<> to turn station 1 off.
7.
Send the command l2,0<> to turn station 2 off.
8.
Press P to collect a data point from stations 3 and 4.
9.
Repeat steps 1 through 8 as necessary.