| Model Name | USB-61901 | USB-61902 | USB-61903 |
| Analog Input |
| Resolution | 16-Bit |
| Number of channels | 16 SE / 8 Pseudo-diff, voltage input | 8 Current inputs |
| Maximum sampling rate (single channel) | 250 kS/s(Multiplexing, channel-gain-queue) |
| Programmable gain | 1, 5, 10, 50 | 1 |
| Input range (Voltage) | ± 10 V, ± 2 V, ± 1 V, ± 200 mV | N/A |
| Input range (Current) | N/A | 0-20 mA |
| Offset error | ± 0.1 mV (gain=1) | ±0.01 mA (typical) |
| Gain error | ± 0.05% of FSR (gain=1) | ±0.05% of FSR (typical) |
| -3dB small signal bandwidth (gain=1) | 600 kHz |
| CMRR (gain=1) | 90 dB | - |
| SFDR (gain=1) | 108 dB | - |
| SINAD (gain=1) | 89 dB | - |
| THD (gain=1) | 102 dB | - |
| SNR (gain=1) | 89 dB | - |
| ENOB (gain=1) | 14.5-Bit | - |
| FIFO buffer size | 4 k samples |
| Trigger sources | Software, external digital, analog trigger ( from one of analog input channels) |
| Trigger mode | Post trigger, delay trigger, retrigger, gate trigger |
| External conversion source | Yes (up to 250 kS/s) |
| Input coupling | DC |
| Overvoltage protection | Continuous ± 24 V |
| Input impedance | High impedance > 1 GΩ | 249.5 Ω (input resistor) |
| Data transfer | Programmed I/O, continuous (USB bulk transfer mode) |
| Analog Output |
|
|
|
| Number of channels | N/A | 2 voltage outputs |
|
| Resolution | - | 16-Bit |
|
| Maximum update rate | - | 1 MS/s (simultaneous update) |
|
| Output range | - | ± 10 V |
|
| Offset error | - | ± 0.15 mV |
|
| Gain error | - | ± 0.05% of FSR |
|
| INL | - | ≤ 1 LSB |
|
| DNL | - | < 1 LSB |
|
| Output driving capacity | - | ± 5 mA |
|
| Slew rate | - | 2.2 V/μs |
|
| Settling time (0.1% of Full scale) | - | 26 μs |
|
| Rising time | - | 6 μs |
|
| Falling time | - | 6 μs |
|
| FIFO | - | 10 k samples (2-CH sharing) |
|
| Output mode | - | Programmed I/O, continuous (USB bulk transfer mode) |
|
| Function I/O |
|
|
|
| Mode* | Digital I/O, general timer/counter, pulse generation |
| Digital I/O | 8 DI / 4 DO (TTL level) |
| General timer/counter | Two 32-Bit, base clock: 80 MHz, external to 10 MHz |
| Pulse generation | Two PWM outputs (Modulation frequency: 0.01 Hz to 5 MHz; Duty cycle: 1%-99%) |
|
|
|
|
| Interface | USB 2.0 high speed, mini-USB connector |
| I/O connector | Two 20-pin screw terminals |
| Operating temperature | 0 to 55°C (32˚F to 131˚F) |
| Storage temperature | -20 to 70°C (-4˚F to 158˚F) |
| Relative humidity | 5 to 95% non-condensing |
| Power requirements | 5V@400 mA (USB bus powered) |
| Dimensions | 114 mm (H) x 156.5 mm (L) x 41.3 mm (W) (4.5” x 6.16” x 1.63”)
(without connector and stand)
|
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