ClearOne comm PRO TH20, PRO 8I, SR 1212 operation manual

6.Link In and Link Out Ports: Two RJ-45 E-bus (expansion bus) connectors used to connect multiple Converge Pro units together to create a site. You can connect up to twelve Converge Pro 840T/880/880T/880TA/8i/SR 1212/SR 1212A units, up to 16 Converge Pro TH20 units, or any combination thereof, where the total number of microphone inputs does not exceed 96. Maximum cable length is 200 feet using Category 5 unshielded twisted pair cable.

WARNING: Use the Link In and Link Out ports with Converge Pro Devices ONLY. Connecting ANY other devices to the Link In and Link Out ports, including ClearOne XAP or PSR1212 products, or Power Over Ethernet (PoE) devices, will result in severe equipment damage.

7.RS-232 Serial Port: Female DB9 connector for connecting to a laptop, computer, or remote control serial devices (such as AMX and Crestron controllers).

NOTE: Converge Console software cannot connect via the RS-232 port; use USB or Ethernet.

8.Control/Status A and B Ports: Two female DB25 connectors used for GPIO interactions between Converge Pro devices and external control devices (such as wall switches and push-to-talk microphones). This enables external devices and controller software to access the Converge Pro command set, including common functions such as volume control, muting, room combining, and preset changes.

9.PC and LAN Ethernet Ports: Two RJ-45 10/100Mbps auto-sensing Ethernet ports. The LAN port connects Converge Pro devices to a network. The PC port provides a pass-through network connection for use with a standard (not crossover) patch cable. The LEDs adjacent to each port indicate connection status and packet traffic activity.

10.Speaker Posts (880T, 840T)/Amplifier Terminal Block (880TA, SR1212A):

•880T, 840T -- Two post/banana plug connectors used to connect an external speaker (4Ω – 16Ω).

Internal power amplifiers eliminate the need for an external power amplifier.

•880TA, SR 1212A -- 8 speaker terminals used to connect an external speaker (8Ω). Four, 35 Watt internal power amplifiers eliminate the need for an external power amplifier.

NOTE: To reduce risk of electrical shock and damage to equipment, never connect wiring or external equipment while the amplifier is power is on. Class 2 wiring is required. Maintain the correct polarity (+/-) on output connectors. (For example: Channel 1 positive (+) speaker lead connects to amplifier’s channel 1 positive terminal. Channel 1 negative (-) speaker lead connects to amplifier’s channel 1 negative terminal. Repeat this procedure for each channel.

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