TDT RZ2, Manual

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6-70 System 3
PZ3 Low Impedance Amplifier
PZ3_Control Macro
The PZ3 Control macro should be added to your RPvdsEx circuit to configure all
hardware features of the PZ3 amplifier.
Inputs are available on the macro for enabling/disabling the LED clip status lights,
enabling Impedance mode for electrode (+) channels, enabling Impedance mode for
alternate indifferent (-) channels, and dynamic power control for channel banks.
Macro Options
Double-clicking the macro in RPvdsEx, displays the macro properties dialog box and
allows users to easily modify macro properties.
On the Options tab, in the properties dialog box:
Setting the Clip LEDs On to Yes or No enables or disables the LED clip warning
indicators.
Differential Mode allows the user to select from Shared Differential) or Individual
(True-Differential) modes.
Input Range may be set to either 3mV or 20mV input ranges.
The Target Impedance option allows the user to specify the impedance threshold
for the status LEDs for each channel bank. Three inputs are available on the macro
for enabling/disabling the LED clip status lights, enabling Impedance mode for
electrode (+) channels, and enabling Impedance mode for indifferent (-) channels.
Under the
Power Contro l tab are additional options that specify how the PZ3
channel banks are powered.
Powering Down the Channel Banks
Channel banks may be powered down through the macro. As long as the
Power
Control Mode
under the Power Control tab is set to
Static
, channel banks may only
be powered up or down through the Power Control Mode options within the macro.
Dynamic mode will allow channel banks to be powered on or off either through both
the Power Control Mode options or by inputs on the macro through RPvdsEx
components. Each of the letter indexed channel banks in the macro correspond to 32
channels of the PZ3. Selecting
No
will enable a bank of channels while selecting
Yes
will power down and disable that bank of channels.
For Example:
If you are using a PZ3 with 128 channels, powering down Bank A (Select Yes )
would power down the first four blocks of 8 channels of the PZ3, disabling channels
1 – 32.