Rane HAL1x Design Guide - Page 71

HAL SYSTEM DESIGN GUIDE As with all the HAL1x Expansion Units, the EXP1x connects to HAL via a shielded CAT 5e with a cable length maximum of 100 meters (300 feet). If you need more RAD ports than are available on the HAL device, adding an EXP1x is the solution. NOTE: The Expansion Bus is a daisy-chain topology supporting up to 32 expansion devices. See "HAL1x Expansion Units" on page 64 for details on latency, cable type and cable length. TIP: If the additional RAD ports are needed for only temporary channel increases (for example, increasing the number of microphones in a room for a one-time panel discussion), you may want to consider other options such as the AM1 or AM2. Following are pictures of the rear and front panels of an EXP1x, along with descriptions of the hardware features. Rear Panel 1. The Power IEC jack connects to AC line voltage, 100-240 VAC, 50/60 Hz. 2. Locate and Power LEDs The Locate LED, which flashes when toggled from within the Halogen software, helps identify a specific EXP - useful if you have more than one EXP installed. The Power LED lights when adequate power is applied to the unit. 3. Remote Audio Device LEDs Provide status information about the health of the shielded CAT 5e connection between each RAD and the EXP1x. The numbers 1 through 8 correspond to the RAD ports 1 through 8 on the right side of the rear panel. For example, the LEDs for number 1 provide information about the RAD connected on port 1. Each LED corresponds with one twisted pair within the shielded CAT 5e cable. If the twisted pair is functioning properly, the LED displays a solid green light when the EXP1x is programmed to expect the RAD model that is physically plugged in. When all cable pairs are working properly, but HAL is not yet programmed for the connected RAD model, all four LEDs flash red. Note that flashing red is a good thing: the cable's good - just program HAL and you're done. l Audio Rx LED - lights solidly if the EXP1x receive pair is working properly. l Audio Tx LED - lights solidly if the EXP1x transmit pair is working properly. l Comm LED - lights solidly if the RAD's data communications pair is working properly. l Power LED - lights solidly if EXP1x is supplying adequate power to the RAD port. NOTE: The Remote Audio Device status indicators on the front panel differ from those on the rear panel. The front panel LEDs provide information about signal activity on each audio channel. See the Front Panel description for more details. 4. Expansion Bus Jacks and Link LED 67