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G GLONASS Commands
G.2 OTHER RELEVANT GPSCARD COMMANDS
Please refer to the MiLLennium Command Descriptions Manual's commands chapter for a list of GPSCard
commands categorized by function. For a complete description of individual commands please consult Appendix
C of the same manual, where commands are listed alphabetically.
NOTE:
To determine the GLONASS PRN for commands that require entry of a PRN, such as ASSIGN, use
this equation:
FREQUENCY * 10000 + SLOT + 37
where the SLOT and FREQUENCY are in the range 1 to 24 inclusive
G.2.1 ASSIGN
The ASSIGN command for Glonass channels will accept a standard NovAtel Glonass satellite identifier (i.e.
frequency*10000 + slot + 37). The search is done by frequency and not by slot number which is ignored by the
ASSIGN command. Since antipodal satellites could have the same frequency but different slot numbers, the
satellite that ends up being tracked will have the slot number of the current visible satellite for that frequency. Note
that this will NOT necessarily match the value of the slot number entered for the ASSIGN command.
Example:
Entering the command:
assign 14 120043
is the same as entering the command:
assign 14 120000
where 14 is the channel, 12 is the frequency and 6 is the slot number.
Assigning two GLONASS satellites with the same frequency but different slot numbers may not give the
desired result:
assign 3 60046
assign 4 60052
G.2.2 ANTENNAPOWER
On MiLLennium-GLONASS GPSCards this command enables or disables the supply of electrical power from the
internal power source of the card to the low-noise amplifier (LNA) of an active antenna. Jumper P301 allows you
to power the LNA either by an internal power source (plug connects pins 1&2) or an optional external power source
(plug connects pins 2&3); or, you can cut off all power to the antenna (plug removed). The ANTENNAPOWER
command, which is only relevant when Jumper P301 is set to connect pins 1&2, determines whether or not internal
power is applied to pin 1 of Jumper P301. Table 3.1, Page 22 summarized the combinations.
The setting of this command (on/off) will affect the way the MiLLennium-GLONASS GPSCard's self-test
diagnostics (see Table H.2, Page 96) report the antenna's status.
Example:
antennapower off
G.2.3 COMn
This command permits you to configure (bps, parity, data bits, stop bits, handshake, echo and FIFO) the
MiLLennium-GLONASS GPSCard COM port's asynchronous drivers.
Examples:
com2 19200,e,7,1,n,on,off
com1 1200,e,8,1,n,on,off
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GPS/GLONASS Receiver User Manual Rev 1
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