TDT PZ2, Руководство пользователя

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6-6 System 3
PZ2 PreAmp
In this mode, LEDs are automatically enabled for default activity
and clip warning display as described above.
External Ground
The external ground is optional and should only be used in cases where the subject
must occasionally make contact with 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
floor a small amount.
A banana jack located on the back of the PZ2 (directly to the right of the charger
input) provides connections to common ground for the first bank of channels (1-
16). A cable kit is also provided to ensure cables used with the external ground are
suitable for this use. 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 PZ2 preamplifier features two Lithium ion batteries to allow for longer record
times. A three-position switch selects the active battery between Bank-A, Bank-B, or
both banks off.
Maximizing Battery Life
To increase battery life, individual banks of channels will only power up when a
headstage is connected to the corresponding input.
The PZ2_Control macro can also be added to the circuit running on the RZ2 to
further specify how PZ2 channel banks are powered. When a headstage is
connected, banks may be powered on or off statically through the Power Control
options within the macro or dynamically by using the PZ2_Control macro inputs.
See the internal macro help for more information.
Battery Status LEDs
Battery Level: Eight LEDs indicate the voltage level of the selected battery. These
LEDs can be found on the front of the PZ2 preamplifier by the heading Level. When
the battery is fully charged, all eight LEDs will light green. When the battery voltage
is low, only one green LED will be lit. If the voltage is allowed to drop further, the