Rane RC 24T - Manual (Page 2)

FRONT PANEL DESCRIPTION
1. POWER LED. When dim, this LED indicates that you forgot to plug in the RC-24T.
2. SYNC LED. Indicates that a suitable AES/EBU (or SPDIF) sync source is plugged in. If this LED is not lit, the RC-24T is
not receiving signal from a source. Check the INPUT SELECT switch to make sure the proper input is selected. The RC-
24T generates WORD SYNC from the AES/EBU INPUT and feeds it to the DA-88. It is necessary for the ADC (or other
44.1kHz or 48kHz sync source with AES/EBU or SPDIF output) to feed the RC-24T AES/EBU or SPDIF Input at all times
(whether you’re recording or playing). It is highly recommended that the same sync source be used while recording or
playing back.
3. TRANSPORT PRESENT LED . When lit, this LED indicates that a DA-88 is connected to the RC-24T via the TDIF-1
connector.
4. RECORD TRACK ASSIGN BUTTON . This push button switch lets you select which four tracks of the DA-88 are
recorded with the stereo 24-bit digital audio source signal. An LED indicates whether you are recording onto tracks 1-4 or
5-8.
5. RECORD TRACK ASSIGN “BOTH” BUTTON . This push button selects all 8 tracks for recording, no matter what the
state of the RECORD TRACK ASSIGN BUTTON (previous section) is. Tracks 1-4 are identical to tracks 5-8. Use this
option when you are archiving a stereo master, and wish to create a redundant copy on the same tape.
6. PLAYBACK TRACK ASSIGN BUTTON . This push button switch lets you select which four tracks of the DA-88 are
converted back to 24-bit AES/EBU, and transmitted out the AES/EBU OUTPUT. An LED indicates whether you are
playing tracks 1-4 or 5-8.
7. SAMPLE RATE LEDS . These LEDs indicate the sample rate of the AES/EBU or SPDIF source (sync) Input (44.1kHz or
48kHz).
8. SOURCE WORD LENGTH LEDS . These LEDs indicate the word length (in bits) of the AES/EBU or SPDIF Input.
9. 16-BIT DITHERED OUTPUT ENGAGE SWITCH. This switch engages 16-bit dithering and truncation on the AES/
EBU OUTPUT. Dither should be engaged when the AES/EBU OUTPUT is feeding a device that truncates the signal to 16
bits (e.g. DAT recorder, digital signal processors, and so on). The dithering used by the RC-24T follows the Triangular
Probably Density Function described by Stanley Lipshitz and John Vanderkooy in their paper: “Resolution below the least
significant bit...”.