RIU-01-02

• +5 VDC regulated power supply required (supplied with unit), maximum current consumed is 500 mA.
• A packaged RIU weighs 1.5 lbs.
• The power supply included with the unit weighs 5 oz.
• 19" rack mount kits are available

• Up to 15 RIUs may be connected in a ring.
• Each RIU in the ring must have a unique address.
• The RIU address is set via a rotary switch on the rear panel

1. Serial Channel A & B pinout, RJ-12 style jack, utilizing RS-422

   1 Tx+ 2 Tx- 3 Rx+

   4 Rx- 5 +5 VDC 6 Ground

   
   
2. TDM Link In/Out, RJ-45 style jack

   1 Rx+ 2 Rx- 3 Tx+ 4 Syn-

   5 syn+ 6 Tx- 7 Sck+ 8 Sck-

   
   
3. Input/Output Channels 1-2

   1 DC 10 pin Male connector on board		Female, 9pin, sub-miniature D connector on front panel
   1 2 3 4 5 6 7 8 9 10	Digital Output+ Digital Output- Audio Out, Hi Audio Out, Lo Digital In+ Digital In-(I/O GND) Audio In, Hi Audio In, Lo Signal Ground I/O Ground	1 6 2 7 3 8 4 9 5 N/C

* Contact ASTi if you wish to connect equipment other than line-level devices or ASTi's Audio Interface Units to the RIU.

• Input impedance is >4.7kOhms
• Balance input with a maximum signal level of+/- 2.25 Vpeak
• 2 separate audio input channels per RIU

• Contact sensing input
• One digital input per audio channel

• Output impedance is less than 100 Ohms
• Balanced output with a maximum signal level of +/- 2.25 Vpeak
• Output power is 2 mW maximum
• 2 separate audio output channels per RIU

• Digital output is opto-isolated
• One digital output per audio channel

The RIU is a sound production device. The user, by act of installing and using the RIU and any associated equipment such as headset and speakers warrants and represents that he/she is aware that excessive audio levels can cause permanent hearing impairment and that he/she assumes full responsibility for configuring all equipment including hardware and software to achieve safe operating sound pressure levels under all conditions.