Using The Digital Output - Samson C.valve C Class Owner's Manual

Operating The C valve
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Using the Digital Output

If you are using a digital recorder that has an S/PDIF digital input, you can take
advantage of the C valve's high quality 24-bit A-to-D converter to make a direct
digital connection. Use a high quality co-ax digital cable to connect the C
valves RCA S/PDIF output to the S/PDIF. When using one C valve, the mono
signal is sent to both the left and right S/PDIF output. You can use two C valve's for
stereo recording by using the DIGITAL LINK jack as explained on page 13 of this manual.
The C valve's A-to-D converter has a selectable sampling rate. Simply put, the sampling rate is how many times
per second the A-to-D converter takes a digital picture of the sound. Use the 48 / 96 switch to select the sample
rate that is compatible with your digital recording device.
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48 / 96 Switch
The C valve has an internal 24-bit A-to-D converter that can be set to either 48 kilo-
hertz or 96 kilohertz sampling rates. Be sure to set the digital input on your sound
card or digital recorder to the same sample rate. To set the sampling rate on your
sound card or digital recorder, see the manufacturers owners manual for your specific
device. When the 48 / 96 switch is set to the out position (the LED is off), the sample
rate is set to 48 kilohertz. When the 48 / 96 switch is set to the in position, the LED will
illuminate indicating that the digital sampling rate is set to 96 kilohertz.
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Digital OL indicator
In order to confirm that you are not clipping or overloading the input to the internal A-
to-D converter, the C valve provides a Digital O.L. (Over Load) LED. Ideally, this LED
should never come on while using the C valve's digital output for recording or live use.
If this LED illuminates, turn down the output VOLUME control, and if necessary the INPUT GAIN control.
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