Pulse sequencer

To issue pulses we use two-level modulation using profile pins. To find cluster information for lower switching times see map.

Arduino due + DDS AD9959

Number	Description	arduino channel	chip number	color	DDS channel	Frequency, [MHz]	AOM delay, [ns]	AOM shortest pulse, [ns]
1	Cool	39	PC7	green	"3"	110
2	Repump	34	PC2	red	"1"	90
3	Magnetic coils	36	PC4		no	TTL
4	Cavity lock AOM	38	PC6	blue	through AOM driver	44	2000	?
5	Cavity gate	33	PC1		no	TTL
6	Spectrum analyzer trigger	31	PA7		no	TTL
7	Probe laser MBR	0		yellow	through AOM driver	80	800
8	Side pump toptica	45	PC18	orange	"0"	-56	950	?
9	Side pump MBR	41	PC9	violet	"2"	100	800 ns +300 ns electr delay

Below are pins for DDS AD9959 connection to arduino due.

Number	Description	arduino channel	chip number
1	master reset	40	PC8
2	SDIO 3	42	PA19
3	SDIO 2	44	PC19
4	SDIO 1	46	PC17
5	SDIO 0	48	PC15
6	SCLK	50	PC13
7	CS	52	PB21
8	DIN P0	45	PC18
9	DIN P1	34	PC2
10	DIN P2	41	PC9
11	DIN P3	39	PC7
12	IO update	37	PC5

If we want to lock the cavity and be in resonance with both cavity lock and MBR + 80. We need to set signal generator for the lock to be 17.87 MHz

Program for Arduino Due

We use two-level modulation - no RU/RD

  write_CSR(0xf0);              // we are going to use all for channels => F0
  write_FR1(0xd0,0x00,0x00);    // [14:12]-profile pin configuration xxx doesn't matter for tis setting,
                                // [11, 10] -> 00 no RURD; [9:8]-> 00 2 level modulation
  write_FR2(0x00,0xc0);         // make the DDS the master for synchronization 
  write_CFR(0x40, 0x03, 0x00);  // [23:22] -> 01 amplitude modulation, [14]->0 linear sweep disable,[9:8]-> 1 full amplitude scale, table 5;  
  
  write_ACR_1(0xb8,0xc0,0x00); // we use modulation between two levels. This function sets upper limit. We adjusted it to be a bit lower then a possible maximum, 
                               // since on full power the output oscillates a lot (one forth of the full range) 
  set_frequency(10e6); // address 0x04, set reference signal, initial frequency set in Hz
  set_phase(0); // address 0x05, set phase from 0 to 2, where 2 correponds to 2pi
  write_ACR(0x01, 0xd8, 0x00); //address 0x06, 0x3af   100% modulation, sets lowest power.  
  
  //set proper frequencies:
  write_CSR(0x20); // choose channel 1, optical pump, frequency 105 MHz
    set_frequency(115e6); // set optical pumpp freq
  write_CSR(0x40); // channel 2, violet side pump, frequency 115 MHz
    set_frequency(115e6); // MBR spectroscopy
  write_CSR(0x10); // channel 0, orange side toptica local oscillator frequency 86 MHz
   write_ACR(0x00,0x10,0x10);
  set_frequency(105e6); // toptica pump