Difference between revisions of "Happex DAQ for g2p"

Revision as of 13:13, 4 February 2012

Happex DAC Value(Right Arm)

DAC Value	0	1000	2000	3000	4000	5000	6000	7000	8000	9000	10000	11000	12000	13000
Output(V)	-4.99	-4.84	-4.69	-4.53	-4.38	-4.23	-4.079	-3.927	-3.774	-3.662	-3.47	-3.318	-3.165	-3.013

DAC Value	14000	15000	16000	17000	18000	19000	20000	21000	22000	23000	24000	25000	26000	27000
Output(V)	-2.861	-2.709	-2.556	-2.404	-2.252	-2.099	-1.947	-1.795	-1.642	-1.49	-1.338	-1.185	-1.033	-0.88

DAC Value	28000	29000	30000	31000	32000	32767	33000	34000	35000	36000	37000	38000	39000	40000
Output(V)	-0.728	-0.576	-0.423	-0.271	-0.119	0	0.0337	0.1862	0.3386	0.491	0.643	0.796	0.948	1.101

DAC Value	41000	42000	43000	44000	45000	46000	47000	48000	49000	50000	51000	52000	53000	54000
Output(V)	1.253	1.405	1.558	1.71	1.863	2.015	2.167	2.32	2.472	2.625	2.777	2.929	3.082	3.234

DAC Value	55000	56000	57000	58000	59000	60000	61000	62000	63000	64000	65000	65535
Output(V)	3.387	3.539	3.691	3.844	3.996	4.15	4.3	4.46	4.61	4.76	4.92	4.99

relationship: Output(v)=0.0001524*DACvalue-4.99558

Happex DAC Value(Counting house)

DAC Value	0	1000	2000	3000	4000	5000	6000	7000	8000	9000	10000	11000	12000	13000
Output(V)	-4.99	-4.84	-4.69	-4.53	-4.38	-4.23	-4.08	-3.92	-3.77	-3.62	-3.47	-3.32	-3.16	-3.01

DAC Value	14000	15000	16000	17000	18000	19000	20000	21000	22000	23000	24000	25000	26000	27000
Output(V)	-2.86	-2.70	-2.55	-2.40	-2.25	-2.09	-1.949	-1.797	-1.645	-1.492	-1.340	-1.187	-1.034	-0.882

DAC Value	28000	29000	30000	31000	32000	32767	33000	34000	35000	36000	37000	38000	39000	40000
Output(V)	-0.729	-0.576	-0.423	-0.270	-0.118	-0.0007	0.034	0.187	0.339	0.492	0.645	0.798	0.951	1.103

DAC Value	41000	42000	43000	44000	45000	46000	47000	48000	49000	50000	51000	52000	53000	54000
Output(V)	1.256	1.409	1.562	1.714	1.867	2.01	2.16	2.31	2.47	2.62	2.77	2.92	3.08	3.23

DAC Value	55000	56000	57000	58000	59000	60000	61000	62000	63000	64000	65000	65535
Output(V)	3.38	3.53	3.69	3.84	3.99	4.15	4.30	4.45	4.60	4.76	4.91	4.99

relationship: Output(v)=0.00015225*DACvalue-4.9901
fitting uncertainty: 0.00000003 for slope, 0.0009 for intercept

Flexible I/O Setting

To use the trigger interrupt from flexible I/O, the switches must be in the positions:

(D2,D1,D0)    Latching Signal
    0         Input 0
    1         Input 1
    2         Input 2 
    3         Input 3
    4         External Strobe
    5         OR(Input 0,Input 1,Input 2,Input 3)
    6         OR(Input 0,Input 1,Input 2,Input 3,External Strobe)
    7         No latching Signal

Note: open swtich(OFF) is a "1", closed switch(ON) is a "0"

In main board of FlexIO, there is a switch to choose the priority of interrupt.

18-bit ADC

18-bit ADC has two mode: I mode and V mode. One can change three resistors:R18,R14,R159 and a switch to change the mode.

For I mode, R14 and R18 remain in KOhms, and R159 in 5~100 KOhms

For V mode, R14~200 Ohm, R18~300 Ohm, do not need to care about R159

Here is the position of the resistor

Here is the mode of each 18-bit ADC in Prex Experiment

For g2p experiment, Here is the ADC slot distribution:

              Left Arm
ADCx         4         15        13        21        7
address    0x22C000  0xCD0000  0xED0000  0x320000  0xB24000
mode         V         V         V         V         V

              Right Arm
ADCx         11        20        2         3         5
address    0xb14000  0xb34000  0x218000  0x318000  0x15C000
mode         V         V         V         V         V