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11) SPDIF_IO (SPDIF In/Out Connector)
The SPDIF output is capable of providing digital audio to external speakers or compressed AC3 data to an external Dolby Digital Decoder. Use this feature only when your stereo system has digital input function. Be careful with the polarity of the SPDIF_IO connector. Check the pin assignment carefully while you connect the SPDIF_IO cable, incorrect connection between the cable and connector will make the device unable to work or even damage it. For optional SPDIF_IO cable, please contact your local dealer.
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| Pin No. | Definition | |
2 | 6 | 1 | VCC | |
2 | No Pin | |||
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| |||
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| 3 | SPDIF | |
1 | 5 | 4 | SPDIFI | |
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| 5 | GND | |
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| 6 | GND |
12)COMB (Serial Port Connector)
Be careful with the polarity of the COM connector. Check the pin assignment carefully while you connect the COM cable, incorrect connection between the cable and connector will make the device unable to work or even damage it. For optional COM cable, please contact your local dealer.
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| Pin No. | Definition | |
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| 1 | NDCD B- | |
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| 2 | NSIN B | |
2 | 10 | 3 | NSOUT B | |
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| 4 | NDTR B- | |
1 | 9 | 5 | GND | |
6 | NDSR B- | |||
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| |||
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| 7 | NRTS B- | |
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| 8 | NCTS B- | |
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| 9 | NRI B- | |
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| 10 | No Pin |
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