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Measurement Computing USB-2408 USB Data Acquisition DAQ Module Specifications
| Analog Input | A/D Converter Type: ADS1256, 24-Bit Sigma Delta ADC Resolution: 24 Bits Channels*: 8 (Differential Mode); 16 (Single-Ended Mode) Channel Configuration: Temp** and Voltage Sensor Inputs Input Voltage Range*: ±0.078125 Volts to ±10 Volts; Input Impedance: 10 M Ω (Power On); 390 Ω (Power Off) Input Leakage Current: ±20 nA Input Capacitance: 590 pf Input Isolation: 500 VDC Min (Field Wiring & USB Interface) Input Coupling: DC CJC Sensor Accuracy: ±0.5°C (15°C to 35°C); ±1.0°C (0°C to 55°C) Throughput*: 2.5 S/s - 1102.94 S/s (Single Channel); 0.16 Hz to 1102.94 Hz (Multiple Channels) * Software Selectable ** Software Selectable to Match Sensor Type |
| Digital I/O | Digital Type: CMOS (Schmitt Trigger) Schmitt Trigger Hysteresis: 0.4 Volt to 1.2 Volt Number of I/O: 8 Configuration: Each bit Input or Output Transfer Rate: 500 port Reads/Writes or Single Bit Reads/Writes Per Second Input Voltage Range: 0 Volts to 15 Volts (20 Volts Max) Input High Voltage: 1.3 Volts to 2.2 Volts Input Low Voltage: 1.5 Volts to 0.6 Volts Output Voltage Range: 0 Volts to 5 Volts (15 Volts Max) Drain to Source Breakdown Voltage: 50 Volts Min Off State Leakage Current: 1.0 µA |
| Counter | Channels: 2 (CTR0 and CTR1) Resolution: 32-bits Counter Type: Schmitt Trigger, Rising Edge Triggered Schmitt Trigger Hysteresis: 0.4 Volt to 1.2 Volt Input Source: Pin 44 (CTR0); Pin 42 (CTR1) Read/Write Rates*: 500 Reads/Wrires per Second Input Voltage Range: ±15 Volts Input High Voltage: 1.3 Volt to 2.2 Volts Input Low Voltage: 1.5 Volt to 0.6 Volts Input Bandwidth: 1 MHz (-3 dB) Input Capacitance: 25 pf Input Leakage Current: ±120 nA @ 5 Volts; 1.6 mA @ ±15 Volts Input Frequency: 1 MHz Max Pulse Width: 500 ns Min (Low and High) * Software Paced and System, Dependent |
| Thermocouple Sensor Compatibility | Type J: -210°C to 1200°C Type K: -270°C to 1372°C Type R: -50°C to 1768°C Type S: -50°C to 1768°C Type T: -270°C to 400°C Type N: -270°C to 1300°C Type E: -270°C to 1000°C Type B: 0°C to 1820°C |
| Throughput | Maximum Throughput is 1.1 kS/s aggregate Note: Ability to Set Conversion Rates on a Per-Channel Basis for User Flexibility and Control over Noise Averaging per Channel |
| Memory | Data FIFO: 4kS (Analog Input); 2 kS (Analog Output) Non-Volatile: 32 KB (28KB - Firmware; 4KB User Data) |
| Quiescent Current | 275 mA* * Includes 10 mA for Status LEDs. Doesn't include potential loading of Digital I/O Bits or +5 Volt Terminal |
| Microcontroller | Non-Isolated: (1) 8-bit RISC Microcontroller with USB Interface Isolated: 16-bit RISC Microcontroller for MEasurements |
| Operating Range | Temperature: 0°C to 55°C Max Humidity: 0% to 90% RH Non-Condensing Max |
| Storage Range | Temperature: -40°C to 85°C Max Humidity: 0% to 90% RH Non-Condensing Max |
| Screw Terminal Connector | Connector Type: Fixed Screw Terminal Wire Gauge Range: 16 AWG to 30 AWG |
| Software Compatibility | Windows® 7, Vista, XP SP2+ (32-Bit or 64-Bit), Linux® and Mac® |
| Dimensions | 12.7 cm x 8.9 cm x 3.5 cm (5.0" x 3.53" x 1.40") User Connection Length: 3 Meters (9.84 feet) Max. |
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