Telos NX12 user manual Analog Input XLR, AES Digital Inputs

Installation  15

♦♦ Bridging impedance (10k ohms)

Analog Input XLR

PIN DESCRIPTION

1Ground

2Audio +

3Audio -

The inputs are designed to be sourced from balanced, line level signals. Usually shielded cables

have the shield wire connected only on one end to prevent ground loops. Older equipment with a transformer output stage may need a terminating resistor across pins 2 and 3; consult the manual for your equipment for how to use it with high impedance inputs.

When using unbalanced sources, we recommend using pin 2 and 3 to connect the signal and ground, respectively. Usually pin 1 is not connected in order to avoid ground loops.

The sensitivity of the send inputs are adjusted using Nominal Input Level in the Audio menu. The Input meter indicates the level after the adjustment and before the AGC. See Sections 3.3, 5.1, and 5.4 for additional information on level adjustment.

Note

The Telos Nx12 uses the currently-favored pin-outs for three-pin XLRs. You can easily remem- ber the correct signals when wiring connectors by using the phrase “George Washington Bridge.” Pin 1 = G = Ground, Pin 2 = W = “+” = White (typical color in mic cable, if there is no white there will be a red conductor), and Pin 3 = B = “-” = Black.

AES Digital Inputs

These are inputs for AES/EBU format digital audio signals and are only present if the unit was purchased with this option. The AES inputs have the following characteristics:

♦♦ AES3 compliant ♦♦ 110 Ohms

♦♦ Sample-rate converted, so may accept sources at any of the common rates, from 32 to 48 kHz.