PowerLab 4/26

Overview:

The ML846 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

The PowerLab 4/26 comes with ADInstruments software (LabChart) and associated manuals and cables.

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.