TDT RZ2, Manual, Page: 323 / 736

System 3 7-9
IZ2/IZ2H Stimulator
Stim Lights
The Stim Lights are located on the front plate of the IZ2/IZ2H and are labeled by
channel number. Each LED indicates the voltage at the corresponding electrode site.
The Stim Light will turn green when a channel has greater than +/- 150 mV at the
output and will turn red when a channel output is /- 10 V.
Status Light
This LED provides connection and output mode information.
Fiber Optic Port (Fiber)
The IZ2 is battery powered and optically isolated from the RZ base station. One end
of the fiber optic cable connects to the IZ2/IZ2H fiber optic input port and the other
end connects to a fiber optic port on the RZ base station. See “Hardware Set-up”
on page 7-5.
Battery Input (Back Panel)
The stimulator uses an LZ battery pack for stimulation and to power the logic
circuitry. The battery pack should be connected via the Battery connection on the
back panel using the battery pack cable provided. See “Hardware Set-up” on
page 7-5.
Power Switch (Front Panel of LZ)
The Power switch turns the power on or off. The status lights on the front panel will
be illuminated when the IZ2/IZ2H is on.
External Ground (Back Panel)
A banana jack below the fiber optics on the back panel provides a connection to
analog ground. This connection was added with IZ2-32 serial number 3011, IZ2-64
serial number 3001, IZ2-128 serial number 3003, and IZ2-16H serial number 2017.
This external ground is optional and should only be used if there is no other ground
connection to the subject, or if you need to connect the IZ2 and recording amplifier
grounds together for noise reduction.
A cable kit is also provided to ensure cables used with the external ground are
suitable for this use. Each kit includes one male to male banana plug cable and one
Light Pattern Description
Solid Red IZ2/IZ2H is not properly connected to RZ base station or
cannot sync.
Solid Green IZ2/IZ2H is properly connected to RZ and is operating in
current mode.
Solid Green, Slowly
Flashing Red
IZ2/IZ2H is properly connected to RZ and is operating in
voltage mode.
Solid Orange IZ2/IZ2H is properly connected to RZ and LZ48M.
Blinking Green IZ2/IZ2H is correctly powered by the LZ48M but is in a fault
state. If this occurs during LZ48M boot-up, check the fiber
optic connection. If this happens during the experiment, check
your experiment settings Step 13 of the boot sequence
above.