LLRF9/500 Specifications
Parameter | Description |
RF Inputs |
Number of channels | 9 |
Center frequency (MHz) | 500 |
Bandwidth (MHz) | 6 |
Full-scale input level (dBm) | +2 |
Channel-to-channel isolation (dB) | 68 |
Spurious-free dynamic range (dB) | 66 |
Readout rate (1/s) | 10 |
RF outputs |
Klystron drive outputs | 2 |
Full scale klystron drive (dBm) | +9 |
Spare/calibration outputs | 2 |
Spare output full scale (dBm) | -14 |
Feedback processing |
Vector sum calculation | 2 channels |
Feedback loops | Direct and integral |
Direct loop delay (ns) | 270 |
Real-time reference tracking | Yes |
Setpoint modulation |
Trigger source | Internal or external |
External trigger inputs | 2 (up, down) |
External trigger level | TTL/LVTTL, optoisolated |
Ramp profile steps | 512 |
Time per step | 70 ns – 37 ms |
Interlocks |
External interlock interface | Daisy chain input and output |
External interlock input | TTL/LVTTL, optoisolated |
RF input interlock | Overvoltage |
Worst-case interlock error (dB) | -0.09 |
Interlock timestamp resolution (ns) | 35 |
Diagnostics |
Time domain |
Raw waveform acquisition channels | 12 |
Samples per channel | 24576 |
Acqusition trigger | Hardware/software |
Acquisition mode | Adjustable pre/post-trigger |
Acquisitions per second, internal trigger | 10 |
Signal source multiplexer | ADC, cavity sum, loop error, klystron drive |
Frequency domain |
Network analyzer | Yes |
Spectrum analyzer | Yes |
Excitation amplitude adjustment | 6 dB steps, from 0 to -78 dB |
Number of points | 1024 |
Signal source multiplexer | Cavity 1, cavity 2, loop error, klystron drive, loopback |
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