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DOC 6501_Release V
ATS-6501 Users Guide
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problems may find that they get better timing performance out of the ATS-6501 when using a
higher mask angle. To set the mask angle access the system via the command port and use the
mask_angle
command to set the desired mask angle for the receiver. Mask angle value is in
degrees.
ATS-6501>mask_angle 10
[OK] 2013-08-05T15:05:12Z
You can verify the current value of the mask angle by sending the
settings gps:mask_angle
command.
ATS-6501>settings gps:mask_angle
1.00000000001
[OK] 2013-08-05T15:04:43Z
If this setting is correct type
save
to save the current user default configuration on the system to
ensure the system uses the proper mask angle after a reboot or power cycle.
2.3.5 Positioning Modes
The ATS-6501 offers three different modes for determining the antenna position and determining
receiver operation, dynamic, auto, and manual.
2.3.5.1 Dynamic Position Mode
The Dynamic mode is typically used for systems located on mobile platforms.
Note:
The system default mode is dynamic. Users at static locations should change this to auto
or manual based on the information provided below.
2.3.5.2 Auto Position Mode
The Auto mode is recommended for static locations where the antenna location has not been
surveyed. When using the Auto mode the ATS-6501 will automatically determine the location of
its antenna. It does this by averaging its calculated position solutions over a period specified by
the
auto_hours
parameter. The factory default for the position period is 12 hours. It is
recommended that the auto positioning period should be set to at least 4 hours. Once the
position_period expires the ATS-6501 will enter the fixed position mode
(status
gps:position:fixed)
. Fixing the antenna position reduces the noise of the GPS measurements and
increases the frequency stability of the timing outputs.
To set the positioning mode to auto use the
position_mode
command on the command port.
ATS-6501>position_mode auto
[OK] 2013-08-05T15:26:06Z
To set the positioning period, use the
position_period
command. If not specified the value will be
in hours. Users can set this value to minutes using
m
after the value.
ATS-6501>position_period 12
[OK] 2013-08-05T15:26:06Z