An OEM version of the USB-1608FS-Plus is also available:
These devices support the following features. Unless otherwise indicated, the OEM version supports the same features as the equivalent standard version.
Functions
UL: cbAIn(), cbAInScan(), cbALoadQueue(), cbFileAInScan(), cbATrig()
UL for .NET: AIn(), AInScan(), ALoadQueue(), FileAInScan(), ATrig()
Python for Windows: a_in(), a_in_scan(), a_load_queue(), a_trig()
Options
BACKGROUND, BLOCKIO, BURSTIO*, CONTINUOUS, EXTCLOCK, EXTTRIGGER, HIGHRESRATE**, NOCALIBRATEDATA, SCALEDATA**, SINGLEIO
* BURSTIO can only be used with the number of samples (Count) set equal to the size of the FIFO or less. The device FIFO holds 32,768 samples. BURSTIO cannot be used with the CONTINUOUS option.
** USB-1608FS-Plus only
Mode
Single-ended
HighChan
0 to 7
In BURSTIO mode, Count must be an integer multiple of the number of channels in the scan:
Packet size
USB-1608FS-Plus:
The packet size is rate dependent. The default packet size is 32 samples. At higher rates, the packet size increases by a multiple of 32.
USB-1608FS:
The packet size is based on the Options setting. In BLOCKIO mode, the packet size is 31 samples. In SINGLEIO mode, the packet size is the number of channels being sampled.
USB-1608FS:
200 kS/s maximum for BURSTIO mode (50 kS/s for any one channel).
The maximum rate is 100 kS/s for all other modes (50 kS/s for any one channel).
When using cbAInScan() or AInScan(), the minimum sample rate is 1 S/s. In BURSTIO mode, the minimum sample rate is 20 S/s per channel.
USB-1608FS-Plus:
800 kS/s maximum for BURSTIO mode (100 kS/s for any one channel).
For all other modes the rate is 400 kS/s nominal (100 kS/s for any one channel). Sampling at rates >400 kS/s may result in a data overrun on some systems. If errors occur, and the application requires fewer than 32,768 samples, consider a finite scan with BURSTIO mode enabled.
When using cbAInScan() or AInScan(), the minimum sample rate is 0.01 S/s (using HIGHRESRATE with Rate set to 10.)
Range
| BIP10VOLTS (±10 volts) | BIP5VOLTS (±5 volts) |
| BIP2VOLTS (±2 volts) | BIP1VOLTS (±1 volts) |
Pacing
Hardware pacing, internal clock supported. External clock supported via the SYNC pin.
Functions
UL: cbSetTrigger()
UL for .NET: SetTrigger()
Python for Windows: set_trigger()
TrigType
Digital triggering: TRIGPOSEDGE, TRIGNEGEDGE
The USB-1608FS-Plus also supports TRIGHIGH and TRIGLOW
External digital (TTL) hardware triggering supported. Set the hardware trigger source with the Trig_In input.
Functions
UL: cbDConfigBit(), cbDConfigPort()
UL for .NET: DConfigBit(), DConfigPort()
Python for Windows: d_config_bit(), d_config_port()
PortNum
AUXPORT
PortType
AUXPORT
Functions
Python for Windows: d_in(), d_out()
PortNum
AUXPORT (eight bits, bit-configurable)
DataValue
0 to 255 for AUXPORT
Functions
UL: cbDBitIn(), cbDBitOut()
UL for .NET: DBitIn(), DBitOut()
Python for Windows: d_bit_in(), d_bit_out()
PortType
AUXPORT
BitNum
0 to 7 on AUXPORT
Functions
UL: cbCClear(), cbCIn()*, cbCIn32(), cbCLoad()**, cbCLoad32()**
UL for .NET: CClear(), CIn()*, CIn32(), CLoad()**, CLoad32()**
Python for Windows: c_clear(), c_in()*, c_in_32(), c_load()**, c_load_32()**
*Although cbCIn()/CIn()/c_in() are valid for use with this counter, cbCIn32()/CIn32()/c_in_32() may be more appropriate, since the values returned may be greater than the data types used by cbCIn()/CIn()/c_in().
**cbCLoad()/cbCLoad32(), CLoad()/CLoad32(), and c_load()/c_load32() only accept Count=0. These functions are used to reset the counter.
CounterNum
1
Count
232-1 when reading the counter.
LoadValue
0 when loading the counter.
cbCLoad() and cbCLoad32() / CLoad() and CLoad32() are only used to reset the counter to 0. No other values are valid.
The Basic signed integers guidelines in the Digital Input/Output Hardware topic apply when using cbCIn() or CIn() for values greater than 32,767 and when using cbCIn32() or CIn32() for values greater than 2,147,483,647.
RegNum
LOADREG1
Functions
UL: cbEnableEvent(), cbDisableEvent()
UL for .NET: EnableEvent(), DisableEvent()
Python for Windows: enable_event(), disable_event()
Event types
UL: ON_SCAN_ERROR, ON_DATA_AVAILABLE, ON_END_OF_INPUT_SCAN
UL for .NET:OnScanError(), OnDataAvailable(), OnEndOfInputScan()
Functions
UL: cbFlashLED()
UL for .NET: FlashLED()
Python for Windows: flash_led()
Causes the LED on the USB device to blink. When you have several USB devices connected, use this function to identify a particular device.
This hardware supports device detection with the API. Refer to the InstaCal, API Detection, or Both? section for information about whether to use InstaCal or the API to detect and configure hardware.
Factory serial number
Listed as Factory Serial No. (read only)
Identifier
Identifier text box
Enable SYNC output
Enable SYNC output checkbox
Hardware version
Listed as Firmware Version (read only)
Factory serial number
ConfigItem = BIDEVSERIALNUM
UL for .NET: GetDeviceSerialNum()
Python for Windows: get_config_string()
config_item = DEVSERIALNUM
Identifier (USB-1608FS)
UL: cbGetConfig()
ConfigItem = BIUSERDEVIDNUM
UL for .Net: GetUserDeviceIdNum()
Python for Windows: get_config()
config_item = USERDEVIDNUM
Identifier (USB-1608FS-Plus)
UL: cbGetConfigString(), cbSetConfigString()
ConfigItem = BIUSERDEVID
maxConfigLen = up to 64 characters
UL for .Net: GetUserDeviceId(), SetUserDeviceId()
Python for Windows: get_config_string(), set_config_string()
config_item = USERDEVID
max_config_len = up to 64 characters
Enable SYNC output
UL: cbGetConfig(), cbSetConfig()
ConfigItem = BIINPUTPACEROUT
ConfigVal = ENABLED, DISABLED
UL for .NET: GetInputPacerOut(), SetInputPacerOut()
Python for Windows: get_config(), set_config()
info_type = BOARDINFO
config_item = INPUTPACEROUT
config_val = State enum
Hardware version
ConfigItem = BIDEVVERSION
DevNum = VER_FW_MAIN
UL for .NET: GetDeviceVersion()
Type = VersionType.FW_MAIN
Python for Windows: get_config_string()
config_item = DEVVERSION
dev_num = MAIN
The channel-gain queue is limited to eight elements. The gains may be any valid value. The channels specified must be unique and listed in increasing order.
Since the maximum data acquisition rate depends on the system connected to the device, it is possible to "lose" data points when scanning at higher rates. If the requested speed cannot be sustained, an OVERRUN error will occur.
USB-1608FS-Plus only. Specify the HIGHRESRATE scan option to acquire data at a high resolution rate. When specified, the rate at which samples are acquired is in "samples per 1000 seconds per channel".
When running an analog input scan with the CONTINUOUS option, set the total number of samples to be an integer multiple of the packet size and the number of channels in the scan. This ensures that the data is aligned properly in the array.
You can set the SYNC pin as a pacer input or a pacer output from InstaCal. By default, this pin is set for pacer input. If set for output when using the EXTCLOCK scan option, a BADOPTION error occurs.
BURSTIO mode allows higher sampling rates for sample counts up to the size of the FIFO. The device FIFO holds 32,768 samples. Data is collected into the device local FIFO. Data transfers to the computer don't occur until the scan completes. For BACKGROUND scans, the Count and Index returned by cbGetStatus()/GetStatus()/get_status() remain 0, and Status = RUNNING until the scan finishes. The Count and Index are not updated until the scan is completed. When the scan is complete and the data is retrieved, cbGetStatus()/GetStatus()/get_status() are updated to the current Count and Index, and Status = IDLE.
BURSTIO is required for aggregate Rate settings above 100 kHz, but Count is limited to sample counts up to the size of the FIFO (32,768 samples). The max Count is ≤32,768 samples.