Measurement Computing Data Acquisition Systems rev.10.4 - Manual (Page 101)

Desired
Channel
Configuration
Flag1 Flag2 Flag3 Notes
Counter (32-bit-
Low) Local P3
DafCtr32Low DafCtrPulse DafCtrRisingEdge
(Default)
Configures low word of 32-bit
counter on P3 for pulse counting
on rising edge of signal. Must be
paired with a 32-bit counter high
word
Counter (32-bit-
High) Local P3
DafCtr32High DafCtrPulse DafCtrRisingEdge
(Default)
Configures high word of 32-bit
counter on P3 for pulse counting
on rising edge of signal. Must be
paired with a 32-bit counter high
word
Counter (32-bit-
Low) Local P3
DafCtr32Low DafCtrTotalize DafCtrFallingEdge Configures low word of 32-bit
counter on P3 for totalizing on
falling edge of signal. Must be
paired with a 32-bit counter high
word
Counter (32-bit-
High) Local P3
DafCtr32High DafCtrTotalize DafCtrFallingEdge Configures high word of 32-bit
counter on P3 for totalizing on
falling edge of signal. Must be
paired with a 32-bit counter high
word
Counter (32-bit-
Low) Local P3
DafCtr32Low DafCtrPulse DafCtrFallingEdge Configures low word of 32-bit
counter on P3 for pulse counting
on falling edge of signal. Must
be paired with a 32-bit counter
high word
Counter (32-bit-
High) Local P3
DafCtr32High DafCtrPulse DafCtrFallingEdge Configures high word of 32-bit
counter on P3 for pulse counting
on falling edge of signal. Must be
paired with a 32-bit high
For digital and counter channel flags definitions, the corresponding element in the gains array will be
ignored. Those flag settings who are marked as default will take on the default value if not explicitly set.
Other flags Settings
There are additional flags that can be added to any flags construct for more specific channel configurations:
Desired
Channel
Configuration
Flag Notes
Unsigned Data
Representation DafUnsigned
(Default)
Data returned for channel ranges from 0 to 65,535
Signed Data
Representation
DafSigned Data returned for channel ranges from –32,768 to +32,767
5
µs Sampling
Interval *
DafSettle5us
(Default)
Sets the sampling interval for the channel to 5
µs
10
µs Sampling
Interval *
DafSettle10us Sets the sampling interval for the channel to 10
µs
1000
µs
(1 ms) Sampling
Interval *
DafSettle1ms Sets the sampling interval for the channel to 1000
µs, (1 ms)
Ignore least
significant 4-bits
DafIgnoreLSNibble
(Default)
The least significant 4-bits represents a channel tag on a 12 bit device and
should be ignored (DaqBook/DaqBoard/1xx series products only)
Clear least
significant 4-bits
DafClearLSNibble The least significant 4-bits will be set to 0
Shift least
significant 4-bits
DafShiftLSNibble The least significant 4-bits will be shifted left by 4 places (making a 12-bit
number into a 16-bit number) (DaqBook/DaqBoard/1xx series products
only)
* Channel configurations for 5
µs, 10 µs and 1000 µs do not apply to DaqBoard/500 Series devices.
Programmer’s Manual 908594 Daq API Command Reference 4.2-45