PowerLab 4/26
Overview:
The PowerLab 4/26 is an economically priced 4-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 4/26 supports all ADInstruments signal conditioners and transducers. Four Pod ports are featured allowing direct connection to Pod signal conditioners and appropriate transducers.
Features:
- Recording speed of up to 100 000 samples per second
- Four 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 4/26 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:
Specifications (As tested at the time of printing and are subject to change.)
Analog Inputs
Number of input channels: 4 DIN and BNC
Input configuration: DIN are single-ended or differential BNC are single-ended
Amplification: Range Resolution
±10 V 312 ìV
±5 V 156 ìV
±2 V 62.5 ìV
±1 V 31.3 ìV
±500 mV 15.6 ìV
±200 mV 6.25 ìV
±100 mV 3.13 ìV
±50 mV 1.56 ìV
± 20 mV 0.625 ìV
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
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: ±10 V
±5 V
±2 V
±1 V
±500 mV
±200 mV
Output slew rate: 2.3 V/ìs
Settling time (G=1, 10 V step): 5 ìs
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 ìs
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)
ADInstruments reserves the right to alter these specifications at any time.
