SHT FAQ
Does the analog voice board come with an audio jack for direct playback through a headset or sound speaker?
Yes. There is an audio jack which plays signals from Channel 0 through a connected headset or sound speaker.
What purpose does the external power supply on the analog board serve?
The purpose is to provide feed power for station modules. The feed power for 16-/8-channel B-type boards is 48V, for Version 2.0 of 16-/8-channel B-type boards is 40V, for 16-/8-channel C-type boards is 40V, and for 16-channel D-type boards is 12V. Each B-/C-type board has an external power interface which is used for connecting the external feed power and the ringing current power. For 16-channel D-type boards, multiple power supply schemes are available to provide the 12V feed power: one is to connect the P4 D-type hard disk power plug of the computer, and another is to short the S17 pin header and obtain the power via the PCIe slot (see the figure below). When the power supply inside the computer is insufficient, a 12V power adapter externally connected can work as a substitute. For more information, refer to the corresponding hardware manual on our website.
We strongly advise users to buy the power supply from Synway, and not to use any power supply with uncertain voltage or polarity, or it might cause damage to the voice board.
Note: Ensure that polarity is correct and only establish the connection with power off.
