Speakers - TDT Medusa4Z User Manual

Setting Notes
Active Channels Single. We are typically recording from one channel only and this conserves energy.
Sample Freq 12KHz (6KHz). Sampling rate of the Medusa4Z. 12KHz yields improved signal fidelity in the ABR
signal frequency range.
Impedance Frq 1KHz. This is the frequency used for the built-in electrode impedance tester. 1KHz is the closest
frequency to the ABR signal frequency range. See
electrode impedance.
Highpass Filt 3Hz. Built-in highpass filter conditions the signal before it is digitized.
Auto Shutdown Optionally set the Medusa4Z to shut off automatically when not in use. This allow users to run
their normal protocols, and then power off if the user no longer operates the PreAmp. This will
save future users from a dead battery.
Caution
Use the POWER button on the top of the Medusa4Z to turn it on and off. There is an ON/OFF (RESET) switch on
the side which completely disconnects the battery and loses all user settings. You should only use the ON/OFF
(RESET) switch if storing the Medusa4Z for an extended period of time.
For more information on the Medusa4Z and full system specs, see the

Speakers

TDT's MF1 Multi-Field Magnetic Speaker is suitable for testing the hearing range of mice, rats,
and guinea pigs. It can be configured for either free- or closed- field use. See
MF1 for Closed Field
laboratory mounting hardware. Aluminum mount/base fittings are included for easier
positioning.
Operation. It has a built-in 8-32 threaded hole for use with standard
Check Impedance for tips and troubleshooting
System 3
The Test Equipment | 16
Manual.
Configuring the