is a significant chance that the RFA power cable will be wrapped around the tower.
6.4.3 move_abs.py
Move the antenna the a absolute motor angle.
*** Move antenna positioner to an absolute angle ***
Usage: move_abs.py <angle> [rate] [--nosemaphore]
angle relative angle (deg.)
rate rotational velocity (deg/s 0.5 --> 10., default: 10.)
--nosemaphore do not check measurment semaphore before moving
6.4.4 move_rel.py
Move the antenna the given angle from the current position.
*** Move antenna positioner a relative angle ***
Usage: move_rel.py <angle> [rate]
angle relative angle (deg.)
rate rotational velocity (deg/s 0.5 --> 10., default: 10.)
6.4.5 stop_scan.py
Immediately stop motion of the tower, even in the middle of an acquisition.
6.5 Maintenance
A collection of tools is available for instrument status monitoring and maintenance.
6.5.1 chupa_status.py
Get current CHUPA software version, voltages, and temperature. The CHUPA is located in the RFA
enclosure.
6.5.2 chupa_test.py
Test Chupa components.,
*** set DDS chirp parameters and transmit ***
Usage: chupa_test.py <f_start> <f_end> <steps>'
f_start chirp minimum (range 100e6 to 300e6)
f_end chirp maximum frequency (range 100e6 to 300e6)
steps number of frequency steps (3125, 6250, 12500, 25000)
6.5.3 ff_init.py
Sets the GPS to GPRI default values.
6.5.4 gps_poweron.py
Turn on power to GPS receiver located in the RFA
6.5.5 gps_poweroff.py
Turn off power to GPS receiver located in the RFA
