• Small and handy signal generator

  • Allows testing of the whole signal chain from electrode to amplifier

  • Simplifies troubleshooting

  • Simultaneously checks all channels (EEG, AUX, trigger) at once

LabSim: A signal generator to simplify troubleshooting

LabSim is a small and handy signal generator, able to generate signals required to test the input ports of different amplifiers. With the LabSim, it is possible to test an amplifier’s EEG, AUX, and trigger connectors as well as functionality of the complete signal pipeline including electrodes and amplifier.

This signal generator is intended to serve two main purposes: 

  1. simplification of troubleshooting by using a reliable signal source, and
  2. inspection of signal pathways, e.g. in preparation of a large-scale study or as a regular checkup in large labs

The ability to test these connectors without any additional equipment, such as secondary electrode bundles or sensors, allows for more precise and efficient troubleshooting. As identification of malfunctioning equipment is simplified, affected products can be sent for repair without lengthy remote troubleshooting. This way, down time is decreased.

LabSim is compatible with most of our amplifier families: actiCHamp (Plus), BrainAmps (MR), LiveAmp Sensor and Trigger Extension and TriggerBox are amongst the compatible devices.

LabSimTechnical specifications
Power supplyBattery or Accumulator
2 x Size AA
Rechargeable NiMH or non-rechargeable alkaline cells
EEG test signal outputOpen circuit voltage: ±50 μV
Voltage @100 kΩ load: ±20 μV
Frequency: 1 Hz ±1% DC offset: ≤ ±25 μV
Output impedance: 133 kΩ
Waveform: sine
AUX test signal outputOpen circuit voltage: ±4.7 V
Frequency: 1 Hz ±1 Hz
DC offset: ≤ 1 mV
Output impedance: 660 Ω
Waveform: sine
AUX power supply input test thresholdTest load: 1 kΩ
Threshold positive AUX supply: 4.7 V
Threshold negative AUX supply: -4.5 V
8 bit Trigger output
(D-Sub 25 connector)
Output voltage: Low 0 V / High 5 V
Trigger pattern duration: 1 s ±1%
Trigger pattern:
* All LOW
* Lowest bit HIGH
* Shifting lowest bit through to highest bit
* All HIGH
* Starting over with all LOW
1 bit trigger output
(BNC connector)
Output voltage: Low 0 V / High 5 V
Trigger pattern:
* simultaneous with trigger bit 0 of 8-bit trigger
* 1 s on – 1 s off – 1 s on – 8 s off
Dimensions (W x D x H)65 mm x 115 mm x 28 mm (incl. connectors: 40 mm)
Weight120 g (without batteries)
160 g (with batteries)
Software requirementsBrainVision Recorder version 1.21.001 or later
Suitable for use in MR scanner roomNo
Medical deviceNo
CE markingThe Brain Products GmbH confirms the electromagnetic compatibility (EMC) of this product according to the Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility.

The Brain Products GmbH confirms the RoHS compliance of this product according to Directive 2011/65/EU of the European Parliament and the Council of 8 June 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment (recast published in the Official Journal of the European Union on 1 July 2011) as well as all its amendments up to and including the Commission delegated directive (EU) 2015/863 of 31 March 2015 (published in the Official Journal of the European Union on 4 June 2015).

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