OEM versions of these devices are also available:
The USB-1208FS-Plus and USB-1408FS-Plus support the following UL and UL for .NET features. Unless otherwise indicated, OEM versions support the same features as the equivalent standard versions.
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, CONTINUOUS, EXTCLOCK, EXTTRIGGER, HIGHRESRATE, NOCALIBRATEDATA, RETRIGMODE*, SCALEDATA, SINGLEIO
* RETRIGMODE can only be used with cbAInScan()/AInScan().
Mode
Single-ended and differential
HighChan
0 to 7 in single-ended mode
0 to 3 in differential mode
Count
Count must be an integer multiple of the number of channels in the scan.
Packet size
Rate dependent. The default packet size is 32 samples. At higher rates, the packet size increases by a multiple of 32.
USB-1208FS: 0.014 Hz to 51.993 kHz for BLOCKIO mode.
USB-1408FS: 0.14 Hz to 48 kHz maximum for BLOCKIO mode.
The throughput depends on the system being used. Most systems can achieve 40 kHz aggregate.
When using cbAInScan()/AInScan(), the minimum sample rate is 1 Hz.
Range
Single-ended:
| BIP10VOLTS (±10 volts) |
Differential:
| BIP20VOLTS (±20 volts) | BIP2PT5VOLTS (±2.5 volts) |
| BIP10VOLTS (±10 volts) | BIP2VOLTS (±2 volts) |
| BIP5VOLTS (±5 volts) | BIP1PT25VOLTS (±1.25 volts) |
| BIP4VOLTS (±4 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
TRIGPOSEDGE, TRIGNEGEDGE, TRIGHIGH, TRIGLOW
Both devices support external digital (TTL) hardware triggering. Use the TRIG_IN input for the external trigger signal.
Functions
UL: cbAOut(), cbVOut(), cbAOutScan()
UL for .NET: AOut(), VOut(), AOutScan()
Python for Windows: a_out(), v_out(), a_out_scan()
Options
BACKGROUND, CONTINUOUS
HighChan
0 to 1
Count
Count must be an integer multiple of the number of channels in the scan.
Packet size
Rate dependent.
Rate
50 kHz max per channel
Range
UNI5VOLTS (0 to 5 volts)
DataValue
0 to 4,095
Configuration Functions
UL: cbDConfigPort()
UL for .NET:DConfigPort()
Python for Windows: d_config_port()
PortNum
FIRSTPORTA, FIRSTPORTB
Port I/O Functions
Python for Windows: d_in(), d_out()
PortNum
FIRSTPORTA, FIRSTPORTB
DataValue
0 to 255 for FIRSTPORTA or FIRSTPORTB
Bit I/O Functions
UL: cbDBitIn(), cbDBitOut()
UL for .NET: DBitIn(), DBitOut()
Python for Windows: d_bit_in(), d_bit_out()
PortType
FIRSTPORTA
BitNum
0 to 15 for on FIRSTPORTA
Functions
UL: cbCIn()*, cbCIn32(), cbCLoad()**, cbCLoad32()**
UL for .NET: 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() and CIn() can handle.
**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.
0 when loading the counter.
cbCLoad()/CLoad() and cbCLoad32()/CLoad32() are only used to reset the counter for this device 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
ON_SCAN_ERROR (analog input and analog output), ON_DATA_AVAILABLE, ON_END_OF_INPUT_SCAN, ON_END_OF_OUTPUT_SCAN
Functions
UL: cbFlashLED()
UL for .NET: FlashLED()
Python for Windows: flash_led()
Causes the LED on a USB device to blink. When you have several USB devices connected to the computer, use this function to identify a particular device by making its LED blink.
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
Input mode
Input Mode drop-down combo box for single-ended or differential.
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
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
Input mode
UL: cbAInputMode()
UL for .NET: AInputMode()
Python for Windows: a_input_mode
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 8 elements in single-ended mode, and 4 elements in differential mode. The channels specified must be unique and listed in increasing order. The gains may be any valid value.
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. The Universal Library cannot always detect this data loss.
Most systems can sustain rates of 40 kS/s aggregate in BLOCKIO mode, and 1 kS/s aggregate in SINGLEIO mode.
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".
By default, the SYNC pin is configured for pacer output and provides the internal pacer A/D clock signal. To configure the pin for pacer input, use the EXTCLOCK option.
If you use the EXTCLOCK option, make sure that you disconnect from the external clock source when you test or calibrate the device with InstaCal, as the SYNC pin drives the output.
Results using SCALEDATA may be slightly different from results using cbToEngUnits() near range limits, due to the nature of the calibration being applied and the internal calculation using floating count values. If this is undesirable use cbToEngUnits().
Use the RETRIGMODE scan option to set up repetitive trigger events. Use the ConfigItem option BIADTRIGCOUNT with cbSetConfig() to set the A/D trigger count, and the BIDACTRIGCOUNT option to set the D/A trigger count. For Python users, set the trigger counts with set_config() and the ADTRIGCOUNT or DATRIGCOUNT config_items.
When configured for single-ended mode, the resolution of the data is 11 bits (data values between 0 and 2,047). However, the Universal Library maps this data to 12-bit values, so the range of data is no different from the differential configuration. Consequently, the data returned contains only even numbers between 0 and 4,094 when the NOCALIBRATEDATA option is used.
When running input scans with the CONTINUOUS option, set the count to be an integer multiple of the number of channels in the scan in order to keep the data aligned properly in the array.
When you include both analog output channels in output scans, the two channels are updated simultaneously.