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| Key | Description | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
procserv_port | If the IOC is started using the ./start_ioc script this defines the telnet port that procServ will use. Otherwise this key is ignored. | ||||||||||
device_address | This is of the form pci-0000:nn:00.0 where nn identifies the slot where the appropriate AMC525 card is inserted (though the slot numbers and PCIe numbers don't match). Inspect /dev/amc525_lmbf/ for currently recognised cards. | ||||||||||
adc_idelay | This is the timing skew described in the previous section. | ||||||||||
dio_termination | If 50Ω termination is wanted for the three digital I/O trigger inputs then set this to 7. | ||||||||||
clock_mode | This determines how the PLL is initialised. The following timing modes are supported:
| ||||||||||
epics_name | This determines the top level device name and generally should match $ioc_name determined above. | ||||||||||
axis0_name | Name of channel 0. Typically X for transverse mode, I for longitudinal mode. | ||||||||||
axis1_name | Name of channel 1. Typically Y for transverse mode, Q for longitudinal mode. | ||||||||||
lmbf_mode | Set to 0 if operating in transverse mode, set to 1 if longitudinal mode. This will determine how the FPGA is configured and some details of the behaviour of the IOC. | ||||||||||
bunches_per_turn | Set to the number of RF buckets per machine revolution. Must be no more than 1024 (with the current FPGA build), and there may be problems with particularly small values. | ||||||||||
revolution_frequency | Set to machine revolution frequency in Hz. Only used for time estimates in display. | ||||||||||
lmbf_fir_offset | Adjustment of FIR coupling between I and Q axes in LMBF mode. | ||||||||||
mms_poll_interval | Used to control polling frequency for MMS readout. If MMS overrun is reported this number needs to be reduced, but check CPU usage with top. Reading MMS data is time consuming. | ||||||||||
persistence_file | This should be an absolute path to a writeable location where the IOC can save the persistent state of all of its PVs. It is wise to keep this file backed up and archived as the configuration of MBF can be quite complex and potentially difficult to recreate. | ||||||||||
persistence_interval | This determines the interval (in seconds) between checks for writing the persistent state. Too small a value will generate a lot of writes, too large a value can result in lost configuration state if the IOC is forcibly restarted. | ||||||||||
pv_log_array_length | Determines how many points of changed waveforms are logged. | ||||||||||
memory_readout_length | Determines the length of the memory readout waveform PV. | ||||||||||
detector_length | Determines the length of the detector readout waveform PV. | ||||||||||
data_port | Determines socket number for fast data readout. |
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