NI 9144 User Guide and Specifications
50
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Where:
Turbo Disable
0
The conversion rate is equal to the
oversample clock rate/128.
Set to 0 for conversion rates > 25 kS/s.
1
The conversion rate is equal to the
oversample clock rate/256.
Set to 1 for conversion rates < 25 kS/s.
Clock Divisor
The clock source (internal or external) is divided by this value and used
as the converters’ oversample clock. Valid values are from 2 to 31, but
the final divided clock must be between 512 kHz and 6.4 MHz. This
means that only values from 2 to 25 are valid when using the 12.8 MHz
internal clock source.
Clock Source
0b00 = 0
The
OCLK
pin is used as the
oversample clock source.
0b01 = 1
The 12.8 MHz internal clock is
used as the clock source and this
12.8 MHz is driven onto the
OCLK
pin.
0b10 = 2
The internal clock is used but not
driven onto
OCLK
pin. Currently,
this is the required clock setting.
0b11 = 3
Reserved.
Table 44.
NI 9233 Calibration Data
Data Rate
Turbo
Disable
Clock
Divisor
Clock
Source
Configure
ADC
Oversample
Clock Rate
50.000 kS/s
0
00010
10
0x0A
6.40 MHz
25.000 kS/s
1
00010
10
0x8A
6.40 MHz
12.500 kS/s
1
00100
10
0x92
3.20 MHz
