Tascam FW-1884 owner manual Host Computer Interfacing

5 – Host Computer Interfacing

Sample Rate This is where you select the expected incoming sample rate to the FW-1884’s digital input. It duplicates the function of the CLOCK and CLOCK RATE (READ/44.1, WRT/48, TCH/88.2 and LATCH/96) keys. Changes made on the FW-1884’s control surface are immediately reflected in this win- dow. For more information on this function, refer to section 3.6, “Clock System Controls”.

Audio Latency This setting is for selecting the buffer size of the FW-1884’s audio performance. The FW-1884’s driver temporarily stores input and output audio samples in buffers. Larger buffer sizes will pro- duce higher latencies but will result in greater system stability, and protection against other system activities causing clicks, pops and other audio artifacts.

NOTE

Note that if you are using the FW-1884’s MON MIX mode to monitor your inputs, you will already have zero-latency monitoring. In this case, we recommend setting the buffer size to 1024 or 2048 for maximum sys- tem stability.

Audio Monitoring This setting determines how the Monitor Level control affects the FW-1884’s mon- itor outputs. The Audio Monitoring selection is used to specify which of the analog outputs will be affected by the FW-1884’s Monitor Level control. For stereo monitoring applications, only the Analog 1 and Ana- log 2 outputs will be connected to an amp and speak- ers. By setting this control to "Monitor Level Affects Analog 1:2" the Monitor Level control will only affect those outputs, leaving the remaining outputs 3 through 8 available for use as effects sends or direct outputs, with the digital streams from the computer passed through to them at unity gain.

If, on the other hand, you want to monitor in surround mode, setting this control to "Monitor Affects Analog 1:8" puts all of the analog outputs under the control of the Monitor Level control.

Master Fader Affects ANLG 1:2 Gain The "Master Fader Affects ANLG 1:2 Gain" switch deter- mines whether the computer generated audio sent to the ANLG 1:2 outputs will be affected by the Master fader of the FW-1884. (The default setting is OFF.)

Turn this switch "on" when the DAW application you're using doesn't process "Master Fader" MIDI messages originating from the FW-1884 surface. In this case, the FW-1884's internal mixer will change the gain of the ANLG 1:2 outputs according to the setting of the Master fader. Leave this switch "off" when your DAW application responds to the "Master Fader" MIDI message by changing the gain of the ANLG 1:2 using the host processor.

NOTE

IMPORTANT: Do not leave this switch in the "on" posi- tion if your DAW application does in fact alter the gain of the audio signal in response to Master fader mes- sages from the FW-1884. In this situation, Master fader gain would be applied twice - once in the host applica- tion, and once by the FW-1884's internal mixer.

OVR Threshold This setting determines the level at which the FW-1884’s meters register an “over,” or clip- ping level. It can be varied between 0.0 and –5.0 dBFS, in .5 dBFS increments.

Version Information This box displays the cur- rently running version of the FW-1884’s drivers and firmware.

32 TASCAM FW-1884 Owner’s Manual