Activity
When con
fi
gured to indicate activity, LEDs are lit green whenever a unit (spike) occurs on the
corresponding channel. The sensitivity threshold for the green LED is ~200 uV.
LED Indicators (digital)
LEDs that represent digital input boards, indicate the number of input channels with each LED
indicating 16 channels. For example, four LEDs indicates 64 input channels have been
detected on that connection.
External Ground
The external ground is optional and should only be used in cases where the subject
occasionally contacts a metal surface that isn't tied to the animal ground, such as a lever
press. When contact is made, a ground loop is formed that temporarily adds extra noise to the
system. Grounding this metal surface directly to the TDT hardware removes this ground loop at
the cost of raising the overall noise
fl
oor a small amount.
A banana jack located on the back of the PZ5 provides connection to common ground. Any
logical ampli
fi
er con
fi
gured through the PZ5 touchscreen has this shorted by default. The PZ5
gizmo in Synapse allow you to
fl
oat that ground connection on individual sub-ampli
fi
ers.
An external grounding cable kit is included with the PZ5. Each kit includes: one male banana
plug to male banana plug pass through and one male banana plug to alligator clip pass
through. These cables also include ferrite beads to remove any potential RF noise that might
travel through the cable. For best results position the ferrite bead close to the source of the RF
noise.
Battery Overview
The PZ5 features a 32 Amp-hour Lithium ion battery pack.
PZ5 NeuroDigitizer | 24