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Universal Library User's Guide Analog Input Boards - USB-1408 Series

USB-1408 Series

The USB-1408FS 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()

Analog input argument values

Options BACKGROUND, BLOCKIO*, CONTINUOUS, EXTCLOCK, EXTTRIGGER, NOCALIBRATEDATA,

RETRIGMODE**, and SINGLEIO

* USB-1408 Series packet size based on Options settings are as follows:

Device

Options setting

Packet size

USB-1408FS

BLOCKIO

SINGLEIO

** RETRIGMODE can only be used with cbAInScan()/AInScan().

HighChan 0 to 7 in single-ended mode

0 to 3 in differential mode

Count In CONTINUOUS mode, Count must be an integer multiple of the packet size.

Rate 48 kHz maximum for BLOCKIO mode. The throughput is system dependent. Most

systems will be able to achieve 40 kHz aggregate. Best results are obtained when

using Windows XP or Windows Vista. When using cbAInScan() or AInScan() the

minimum sample rate is 1 Hz.

Range Single-ended mode:

BIP10VOLTS (± 10 V)

Differential mode:

BIP20VOLTS (± 20 V) BIP2PT5VOLTS (± 2.5 V)

BIP10VOLTS (± 10 V) BIP2VOLTS (± 2 V)

BIP5VOLTS (± 5 V) BIP1PT25VOLTS (± 1.25 V)

BIP4VOLTS (± 4 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()

Trigger argument values

TrigType TRIGPOSEDGE and TRIGNEGEDGE

External digital (TTL) hardware triggering supported. Use the Trig_In input for

the external trigger signal.

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MC PCIe-DIO96H Guide de l'utilisateur Page 92