TDT RZ2 Manual page 321

System 3
10. If the Ready light is on but the IZ2 status light is blinking green, check the
11. If using an LZ48, power on the LZ48 using the power switch on the LZ48's
12. Wait at least five minutes to ensure the IZ2 is at calibrated temperature. The
13. Initiate your recording session in Synapse or OpenEx. By default, your
14. Connect headstage to the subject.
15. The hardware is ready to use.
If using the system with other devices, such as a switching headstage or
preamplifiers, see the documentation for those devices for hardware connection
information in the System 3 Manual.
Testing the System
The IZ2 system includes a resistor block that is used to verify stimulation output.
The RB100 is a 100kOhm resistor block that is included with the IZ2. The RB10 is
a 10kOhm resistor block that is included with the IZ2H. In Synapse, use the
impedance test built into the IZ2n HAL object at run time to verify that the correct
impedance is measured. See "Software Control" on page 7-10 for more information.
Best Practices
We recommend enabling the shunt resistors via the IZ2 hardware setting in Synapse,
or the IZ2_Control macro in OpenEx/RPvdsEx.
When a channel is not used for stimulation, TDT recommends setting it to "Open"
unless a ground or zero state is specifically called for by the stimulation protocol. If
a non-stimulating channel must be left connected, the user can use capacitive
coupling (ACC16-Z device adapter) or enable the Shunt to minimize the effects of
direct current on the electrode. This is highly recommended to reduce unnecessary
current flow in the subject.
To minimize risk, never allow the LZ48 battery to fully discharge. When the battery
charge indicator is getting low, stop the experiment (open all channels), disconnect
the subject, and recharge before further use.
Always verify proper operation of your device before connecting to a research subject.
If you observe a red Status light or blinking green Status light on your IZ2 during
setup, do not connect a research subject or proceed with the experiment.
If you encounter any problems or need help verifying proper device operation, please
contact TDT Technical Support for assistance at support@tdt.com.
on the IZ2 should turn orange. If Pin 8 is ON, the Ready light will flash
green. If Pin 8 if OFF, the Ready light will be solid green.
optical connection to the IZ2 and try again.
front panel. This will also power on the stimulator.
Note: Ensure that the LZ48 rechargeable batteries are fully charged before
starting your protocol.
IZ2 stimulation circuitry is heat sensitive and is calibrated at TDT after it has
warmed up and reached temperature equilibrium.
protocol design should have zero current output and all IZ2 channels should
be in the 'Open' state before you begin stimulation. If the IZ2 status light is
blinking green when you start your experiment, it is in a fault state. This is
because either there are more than 10 channels activated or you are running
in Voltage mode (this includes using the "IZ2 Ground" option in the Signal
Injector gizmo in Synapse). If you require Voltage mode or more than 10
stim channels, turn Pin 8 to the ON position and repeat the boot cycle. See
"Software Control" on page 7-10 for more information.
7-7
IZ2/IZ2H Stimulator