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RZ6 Tech Notes

RZ6 Mic-A input Phantom Power supply

TN0953

Product: RZ6
Version: All
Date Added: 2015-03-04

Issue

The RZ6 Mic-A input accepts an XLR cable from a condenser microphone. Microphones of this type usually require a +12 or +48 Volt Phantom Power that is NOT provided by the RZ6. You will either need a microphone that does not require power (not typical), one that has its own onboard battery, or an independent power supply. For example, you could use a power supply like the BEHRINGER MICROPOWER PS400. This is just one example. Be sure to get a power supply compatible with your microphone.

Changing Power Supply Fuses

TN0952

Product: RZ, RZ2, RZ5, RZ5D, RZ6, RZ10, ZB1PS
Version: All
Date Added: 2015-01-22

Issue

RZ Processors and ZB1PS device chassis power supplies have fuses that can be changed by the user. This note provides step by step instructions on changing the fuses. This information can also be found in the Power and Safety guide for these devices, available on the TDT Website User Manuals page.

RZ Fuses

The RZ devices uses two 5 x 20 mm, 1.6 A 250 V rated, slow-blow fuses. Access to the fuses are through a fuse plate on the back panel.

Danger

Only fuses with the required rated current, voltage, and specified type should be used with this device.

To change the power supply fuses:

  1. Turn off the power switch and disconnect the power cord from the power supply.

  2. Using a small flathead screwdriver gently push the clip along the left side of the fuse plate to the right.

  3. When the fuse plate pops free, gently slide the fuse plate and housing out of the power supply.

  4. The housing contains two fuses. Replace the defective/broken fuse(s) with a new 5 x 20 mm, 1.6A 250V rated, slow-blow fuse by gently pushing the end of the fuse into the fuse housing.

  5. Push the fuse housing back into the power supply and press gently until the clip clicks into place.

ZB1PS Fuses

The ZB1PS devices uses two 500 mA 250 V rated time lag fuses. Access to the fuses are through fuse plates on the back panel.

Danger

Only fuses with the required rated current, voltage, and specified type should be used with this device.

To change the power supply fuses:

  1. Turn off the power switch and disconnect the power cord from the power supply.

  2. Using a flathead screwdriver, gently push the fuse plate inward.

  3. Once the fuse plate is pressed inward gently turn the screwdriver counterclockwise until the fuse plate tab is visible.

  4. Depress the fuse plate and it will pop up.

  5. Slide the fuse housing out of the power supply.

  6. Replace the defective/broken fuse with a new 500 mA 250 V rating time lag fuse by gently pushing the end of the fuse into the fuse housing.

  7. Push the fuse housing back into the power supply by pressing the screwdriver inward.

  8. Rotate the fuse plate clockwise until the fuse tab is correctly locked back into its original position.

  9. Repeat for the other fuse, if necessary.

Note

This tech note does not cover the older ZB1 model device caddie, which relies on the PS25F power supply. The PS25F uses a different fuse (printed on the faceplate).

Setting up the RZ6 for Fish ABR (with a hydrophone)

TN0941

Product: RZ6, BioSigRZ
Version: All
Date Added: 2014-08-25

Issue

When using the RZ6 to collect ABRs from fish, you will generally want lower frequencies and slower presentation rates than commonly found with other animals like rodents. You might also want to record the stimulus with a Hydrophone at the same time you record the ABR. This will require different signal, circuit, and configurations files that are not typically provided with BioSigRZ.

Solution

The files you will need, along with information on how to use them and how to calibrate with a hydrophone, are available in a folder called FishABR inside the BioSigRZ examples zip file available at: BioSigRZExamples.zip.

RZ6 ADC off by one sample

TN0889

Product: RZ6
Version: TDT Drivers < 80
Date Added: 2011-06-08

Issue

The RZ6 ADC-A is delayed one sample relative to ADC-B.

Solution

Update to the latest version of TDT drivers to get the latest RZ6_AudioIn macro. This macro adds a one-sample delay to ADC-B so that the inputs are properly synchronized.