MCCSSubarray¶
Overview¶
MCCS configuration and scan control is achieved via communication with a MCCSSubarray Tango device. Additionally, the MCCSSubarray device presents a device attribute that lists the resources allocated to that subarray.
The diagram below shows the packages and high-level object model used for communication with an MCCSSubarray device.
Classes in the assigned_resources.py module model the resource allocation
status JSON string returned by the MCCSSubarray.assigned_resources
attribute.
Classes in the configure.py module model the arguments for the
MCCSSubarray.Configure()
command.
Classes in the scan.py module model the arguments for the
MCCSSubarray.Scan()
command.
assigned_resources.py¶
The assigned_resources.py
module models the the JSON returned by reading the
MCCSSubarray.assigned_resources
attribute.
Example JSON returned by MCCSSubarray.assigned_resources
:
{
"interface": "https://schema.skao.int/ska-low-mccs-assignedresources/2.0",
"subarray_beam_ids": [1],
"station_ids": [[1,2]],
"channel_blocks": [3]
}
configure.py¶
The configure.py
module models the the JSON input for an
MCCSSubarray.configure()
command.
Example JSON input for an MCCSSubarray.Configure
call:
{
"interface": "https://schema.skao.int/ska-low-mccs-configure/2.0",
"stations":[
{
"station_id": 1
},
{
"station_id":2
}
],
"subarray_beams": [
{
"subarray_beam_id":1,
"station_ids": [1, 2],
"update_rate": 0.0,
"channels": [
[0,8,1,1],
[8,8,2,1],
[24,16,2,1]
],
"sky_coordinates": [0.0, 180.0, 0.0, 45.0, 0.0],
"antenna_weights": [1.0, 1.0, 1.0],
"phase_centre": [0.0, 0.0]
}
]
}
scan.py¶
The scan.py
module models the argument for the MCCSSubarray.scan()
command.
Example JSON input for an MCCSSubarray.scan()
call:
{
"interface": "https://schema.skao.int/ska-low-mccs-scan/2.0",
"scan_id":1,
"start_time": 0.0
}