Can I expand the 4 or 8 channel EMG systems?
• The 4 channel system can be fully expanded to an 8 channel system, as the 4 and 8 channel systems use the same main amplifier and Portable unit enclosures. • A 16 channel system can be configured by coupling two 8 channel systems in a sturdy table top case. Wearing two Portable units is the only complication, but customer reports indicate that this is only problematic with recordings in small children. The benefit is that the two 8 channel systems can be used independently. For example, when less than 9 channels of EMG are to be measured in a research study, the second 8 channel AMT-8 system can be used in a teaching lab. Does the reference pre-amplifier need to be inserted into the 1st channel of the Portable unit? Yes. The rule is that the reference pre-amplifier must be connected into the Portable unit, provided that there are no other pre-amplifiers connected to a Portable unit channel with a smaller channel number. Most users find it convenient to consistently connect the refere
