PowerLab 2/26

Overview:

The PowerLab 2/26 is an economically priced 2-channel data acquisition system. This unit is ideal for teaching and is used in the fields of human and animal physiology, pharmacology, neurophysiology, biology, zoology, biochemistry and biomedical engineering. The PowerLab 2/26 supports all ADInstruments signal conditioners and transducers. Two Pod ports are featured allowing direct connection to Pod signal conditioners and appropriate transducers.

The PowerLab 2/26 comes with ADInstruments software (LabChart and Scope) and associated manuals and cables.

Features:

• Recording speed of up to 100 000 samples per second
• Two analog input channels (BNC and Pod port DIN connectors)
• Independently selectable input sensitivities
• Analog output for stimulation or pulse generation
• Trigger input
• 16 bit resolution
• Wide range of low-pass filters
• AC or DC coupling
• I²C connection for use with any ADInstruments signal conditioner
  
• USB interface for connection to Windows and MacOS computers

Applications:

The PowerLab 2/26 is suitable for educational application, particularly within the fields of Human and Animal Physiology, Pharmacology, Neurophysiology, Biology, Zoology, Biochemistry and Biomedical Engineering. For a comprehensive list of applications and experiments visit the PowerLab Education Applications page and the Configured LabChart Experiments page.

Specifications:

(As tested at the time of printing and are subject to change.)

Analog Inputs

• Number of input channels: 2 DIN and BNC
• Input configuration: DIN are single-ended or differential BNC are single-ended
• Amplification:

• Maximum input voltage: ± 15 V
• Input impedance: ~ 1 MOhm @ 150 pF
• Maximum bandwidth: 25 kHz
• DC drift: Software corrected
• CMRR: > 105 dB at a gain of 100
• Interchannel crosstalk: > 90 dB
• Signal-noise ratio: > 100 dB (10 V range)
• Accuracy error: < 0.2%
• Non-linearity (max): 0.1%
• Filter – Low Pass: 1, 2, 5, 10, 20, 50, 100, 200, 500, 1000, 2000 Hz and anti alias
• Filter – Notch: Mains

Pod Connectors (Din)

• General features: Combined power, I²C and single-ended or differential analog input signals on one connector, support Smart transducers, etc.
• Supply voltage: ± 5 V regulated
• Maximum current: 50 mA per Pod connector
• Communications: 2-wire I²C
• Signal input: Positive and negative analog inputs and analog return
• Connector type: 8-pin DIN with metal surrounds

Sampling

• ADC configuration: Each channel has its own ADC
• ADC resolution: 24 bit
• ADC linearity: ± 0.0006% FSR (INL)
• Maximum sampling rates: 100 000 samples per second on each channel (concurrent)– 400 000 samples per second (aggregate)
• Available sampling rates: 100 000 samples per second down to 10 minutes/sample

Output Amplifier

• Output configuration: 2 Outputs – Complementary
• Output resolution: 16 bit
• Maximum output current: 20 mA
• Accuracy error: < 0.2%
• Linearity error: ± 0.5 LSB (INL) (typical)
• ± 0.5 LSB (DNL) (typical)
• Output ranges: 

• Output slew rate: 2.3 V/μs
• Settling time (G=1, 10 V step): 5 μs
• Output impedance: 0.001 Ohms

External Trigger

• Trigger mode: TTL level or contact closure, software selectable
• Trigger threshold: 2.0 V typical
• Hysteresis: 0.6 V typical
• Input load: HCMOS
• Maximum input over-voltage: ± 12 V
• Minimum event time: 3 μs

Expansion Ports

• I²C expansion port: Power and control bus for front-end units. Supports a number of front-ends equal to the number of PowerLab analog inputs. Interface communications rate of up to 10 kbit/s.

Microprocessor and Data Communication

• CPU: Digital Signal Processor – Freescale DSP56858
• RAM: 4 Mbit SRAM
• ROM: 1 Mbit Flash ROM
• Data communication: Hi-speed USB 2.0 (max of 480 Mbit/s transfer) compatible with USB 1.1 hosts.

Physical Configuration

• Dimensions (w × h × d): 200 mm × 65 mm × 250 mm
• Weight: 1.8 kg

Operating Requirements

• Operating voltage range: 95–264 V, AC 47–63 Hz
• Rated power: 25 VA
• Operating conditions: 5–35 °C, 0–90% humidity (non-condensing)