User`s guide

User’s Guide TCO

Sample Rate: The TCO derives a word clock of 44.1 kHz or 48 kHz from the synchronization

signal. With the setting 'from App' active the value sent from the ASIO application to the driver is

used.

The lower field provides common Pull-Up and Pull-Down values. The final value of the previ-

ously defined sample rate is shown in the field Frequency in case the sync-signal is valid.

Frequency: The TCO measures the word clock that it generates and shows the current value in

this field.

Note

: The MTC signal is provided via a new (virtual) MIDI input port. This one has to be chosen

as MTC sync source within the application.

7.3 Updated Information on the TCO - HDSP

The latest Windows HDSP(e) drivers 4.06 added several new features to the HDSP TCO:

• Direct support for 23.976 (23.98) fps (HD)

• 23.976 fps can also be used with external word clock

• Support for Double Speed with ASIO. When using an ASIO application in 88.2 or 96 kHz this

frequency will be shown in the Frequency display, although only 44.1 or 48 kHz are present

as external reference. The APP timecode derived from the LTC signal will be automatically

adjusted.

The LTC output of the TCO has the following peculiarities:

• The output of timecode requires an ASIO program that supports this feature. Although this

function is part of the ASIO specifikation, most popular programs do not support it.

• The output signal of the TCO can not be switched off. In Stop mode the same timecode sig-

nal is sent repeatedly (Positional Timecode), which equals a stop.

7.4 Notes on using the HDSPe PCI

Since driver version 3.068 the TCO can also be used with the HDSPe PCI, and therefore with

Multiface and Digiface. The following notes and limitations apply:

• Only ASIO timecode (APP) is supported. Converting LTC to MTC is not supported.

• Generating an audio clock out of the incoming timecode requires a BNC cable from the

TCO's word clock output to the word clock input of the Multiface/Digiface. In the Settings dia-

log Pref. Sync Ref has to be set to TCO and Clock Mode must be set to AutoSync. If the in-

coming timecode is not used to clock the HDSP system the BNC cable is not required.

• The PCI Express Bus provides only 12 Volt and a limited amount of current. Therefore ini-

tially the HDSP TCO will not receive any operating voltage (5 Volt) from the HDSPe PCI. For

the HDSP TCO to receive its operating voltage via the flat ribbon cable from the HDSP PCIe

card, connect the computer’s floppy power supply output to the 4-pin connector found on the

HDSPe PCI.