PowerLab 8/35

Overview:

The PL3508 PowerLab 8/35 is a high-performance data acquisition system suitable for a wide range of research applications that require up to 8 input channels. Typical applications include human and animal physiology, pharmacology, neurophysiology, biology, zoology, biochemistry, and biomedical engineering. The unit is capable of recording at speeds of up to 400 000 samples per second continuously to disk (aggregate), and is compatible with instruments, signal conditioners and transducers supplied by ADInstruments, as well as many other brands. In addition to standard single-ended BNC inputs, the PowerLab 8/35 features 4 differential Pod ports that allow for direct connection of Pod signal conditioners and appropriate transducers.

The PowerLab 8/35 is shipped with ADInstruments software (LabChart) and associated manuals and cables.  Also available is the PL3508/P PowerLab 8/35 with LabChart Pro which includes all ADInstruments LabChart Modules (excludes GLP software). For more information about these modules visit the LabChart Pro page or contact your nearest ADInstruments representative.

PowerLabs manufactured by ADInstruments are approved to strict international safety standards, and tested by independent certification bodies. They are designed, manufactured and serviced under the internationally recognized ISO9001:2008 quality management system.

Features:

• Eight analog inputs: Inputs 1-4 are single-ended (BNC) and differential (Pod Port), inputs 5-8 are single-ended (BNC)
• Two independent stimulator outputs
• External trigger input and signal triggering
• Wide range of low-pass filters
• AC or DC coupling
• Digital inputs and outputs for external instrument control
• High-Speed USB 2.0 interface (supports USB 1.1) for connection to Windows and MacOS computers
• Can be rack mounted using a PLA190 Rack Adapter

Applications:

The PowerLab 8/35 data acquisition system is suitable for research in the fields of human and animal physiology, pharmacology, neurophysiology, biology, zoology, biochemistry, and biomedical engineering.

For a list of common research applications where PowerLab data acquisition systems are used visit PowerLab Research Applications.

Specifications:

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

Analog Inputs

• Number of inputs: 8
• Input configuration: 4 dedicated single ended inputs and 4 inputs configurable as single-ended or differential (through Pod port).
• Amplification range: ±2 mV to ±10 V full scale in 12 steps:

• Maximum input voltage: ±15
• Input impedance: ~ 1 MΩ || 100 pF
• Low-pass filters: 1 Hz – 1 kHz in 2:5:10 steps; 2 kHz, 25 kHz
• Input coupling: DC or 0.15 Hz (software-selectable)
• Frequency response (–3 dB): 25 kHz on 10 V range
• DC drift: Software corrected
• CMRR: 100 dB @ 100 Hz (differential mode, 100 mV – 2 mV range)
• Input crosstalk: 75 dB minimum
• Input noise: <350 μVrms referred to input on 10 V range
  

Pod Connectors

• General features: Combined power, I²C and single-ended or differential analog input signals on one connector, supports Pods
• Supply voltage: ±5 V regulated
• Maximum current: 50 mA per pod port
• Communications: 2-wire I²C
• Signal input: Positive and negative analog inputs
• Connector type: 8-pin DIN

Sampling

• ADC resolution: 16 bit (313 μV resolution on 10 V range)
• Linearity error: ±2.5 LSB
• Maximum sampling rates:

Analog Outputs

• Number of outputs: 2
• Output configuration: Single-ended (outputs can be used as one differential output)
• Output resolution: 16 bit (312.5 μV resolution on the 10 V range)
• Maximum output current: ±50 mA
• Output impedance: 0.5 Ω typical
• Slew rate: 6 V/μs
• Settling time: 10 μs (to 1 % of FSR)
• Linearity error: ±4 LSB
• Output range: ±200 mV to ±10 V full scale in six steps:

External Trigger

• Trigger mode: TTL level or contact closure, software selectable
• Trigger threshold: +1.3 V (rising edge), +1.1 V (falling edge)
• Hysteresis: 0.6 V
• Input impedance: 50 kΩ
• Maximum input voltage: ±12 V
• Minimum pulse width: 5 μs

Microprocessor and Data Communication

• CPU: PowerPC 405GPr @ 240 MHz
• RAM: 16 MB SDRAM
• Data communication: USB 2.0

Expansion Ports

• I²C expansion port: Power and control bus for Front-end units. Supports up to 16 Front-end channels but limited to PowerLab’s free inputs. Interface communications rate of up to 10 000 bits/s.
• Digital output: 8 independent lines, TTL output level (8 mA maximum load per line)
• Digital input: 8 independent lines, TTL input level, threshold 1.2 V, 10 kΩ input impedance, 5 V maximum

Physical Configuration

• Dimensions (h x w x d): 70 x 240 x 260 mm (2.8" x 9.4" x 10.2")
• Weight: 2.7 kg (5.9 lbs)
• Operating voltage: 90-250 V (automatic)
• Maximum power needs: 80 VA (full complement of Front-ends and Pods)
• Operating temperature: 5 – 35 °C, 0 – 90% humidity (non-condensing)