[ts-7000] adc calibration on ts7370

I am able to set the digital output on and off ( 0v to 3.5v)
By connecting this to the ADC, I get a different reading.
They are apparent issue with the calibration.

Q: What is the procedure to calibrate the board?

ts7370:~/ts7370/adc# ../setbufout/setbufout 1 0; ./adc_7250 
Buffered Output Value on OUT_01: 1 (os:235014050 m:2)
Buffered Output Value on OUT_01: 0 (ns:235014048 m:2)
Calibration Values = 
[ 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0  ]
Board has been calibrated by Technologic Systems...
Channel 0: 1.558V (av: 40851 / fs: 86507.520V)      <<<< should be 0V !!!
Channel 1: 2.506V (av: 65698 / fs: 86507.520V)
Channel 2: 2.506V (av: 65698 / fs: 86507.520V)
Channel 3: 1.872V (av: 49083 / fs: 86507.520V)
Channel 4: 3.450V (av: 90429 / fs: 86507.520V)
ts7370:~/ts7370/adc# ../setbufout/setbufout 1 1; ./adc_7250 
Buffered Output Value on OUT_01: 0 (os:100796320 m:2)
Buffered Output Value on OUT_01: 1 (ns:100796322 m:2)
Calibration Values = 
[ 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0  ]
Board has been calibrated by Technologic Systems...
Channel 0: 3.455V (av: 90562 / fs: 86507.520V)    <<<< 3.3-3.5v on scope, so ok!
Channel 1: 2.506V (av: 65699 / fs: 86507.520V)
Channel 2: 2.506V (av: 65698 / fs: 86507.520V)
Channel 3: 1.872V (av: 49084 / fs: 86507.520V)
Channel 4: 3.450V (av: 90429 / fs: 86507.520V)


Also anticipating my next question.
Q: Is there any buffering of the adcs ?
Q: trigger for synchronization with external hardware?

Thanks,

-- 
Emmanuel


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