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UZ2 Tech Notes

Using TDT equipment through a USB interface with 64-bit Windows 7


Product: UZ2, TDT Drivers
Version: < 76
Date Added: 2010-09-17


With the introduction of the 64-bit operating system, Windows required all drivers to be signed. The USB drivers version 74 and below are not signed drivers.


Upgrade to the latest version of TDT Drivers. This issue was resolved in v76.

Intermittent hum heard through speakers or headphones when using a USB2.0 interface


Product: RX6, UZ2, UB2
Version: All
Date Added: 2005-09-22


An intermittent low frequency hum may be heard through headphones or speakers when the output device is being housed in a ZB1 caddie using a USB2.0 interface. The frequency is variable, and the hum may be constantly present or come and go over time. This has been reported with the RX6 but might occur when using other RP/RX devices with the USB2.0 interface. This problem is only found with USB interfaces and disappears when using the gigabit interface.


Upgrade to the Gigabit interface.

zBUSmon returns invalid version numbers when using USB 2.0


Product: TDT Drivers, UZ2, UB2
Version: All
Date Added: 2005-01-24


When using the UB2/UZ2 USB 2.0 interfaces, clicking the Hardware Reset button in zBUSmon will change the version numbers to 65535 and a transfer test will fail.


After using the Hardware Rest button wait 20 seconds, then close and reopen zBUSmon. The correct version numbers should be displayed.