User`s guide

Universal Library User's Guide Analog Input Boards - USB-1608FS
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USB-1608FS
The USB-1608FS supports the following UL and UL for .NET features:
Analog input
Analog input functions and methods supported
UL: cbAIn(), cbAInScan(), cbALoadQueue()*, cbFileAInScan(), cbATrig()
UL for .NET: AIn(), AInScan(), ALoadQueue()*, FileAInScan(), ATrig()
* The channel-gain queue is limited to eight elements. The USB-1608FS accepts
only unique contiguous channels in each element, but the gains may be any valid
value.
Analog input argument values
Options BACKGROUND, BLOCKIO*, SINGLEIO*, BURSTIO**, CONTINUOUS, EXTTRIGGER,
CONVERTDATA, NOCALIBRATEDATA, and EXTCLOCK
*The packet size is based on the Options setting as follows:
Options setting
Packet size
BLOCKIO
31
SINGLEIO
Equals the number of channels being sampled.
** BURSTIO can only be used with the number of samples
(Count) set equal to the size of the FIFO or less. The USB-1608FS FIFO holds
32,768 samples. BURSTIO cannot be used with the CONTINUOUS option.
Mode Single-ended
HighChan 0 to 7 in single-ended mode
Count In BURSTIO mode, Count must be an integer multiple of the number of channels in
the scan.
▪ For one-, two- , four-, and eight-channel scans, the maximum Count is 32768
samples.
▪ For three- and six-channel scans, the maximum Count is 32766 samples.
▪ For five-channel scans, the maximum Count is 32765 samples.
▪ For seven-channel scans, the maximum Count is 32767 samples.
Rate 200 kHz maximum for BURSTIO mode (50 kHz for any one channel). The
maximum rate is 100 kHz for all other modes (50 kHz for any one channel). When
using cbAInScan() or AInScan(), the minimum sample rate is 1 Hz. In BURSTIO
mode, the minimum sample rate is 20 Hz/channel.
Range BIP10VOLTS (± 10 V) BIP2VOLTS (± 2 V)
BIP5VOLTS (± 5 V) BIP1VOLTS (± 1 V)
Pacing Hardware pacing, internal clock supported. External clock supported via the
SYNC pin.
Triggering
Trigger functions and methods supported
UL: cbSetTrigger()
UL for .NET: SetTrigger()