Yellowtec PUC² Users Manual

1 Introduction

The Yellowtec PUC² is a professional-quality USB soundcard for use with MAC or
PC. It is compatible with MAC OS 9 or higher, Windows XP (with Service Pack 2)
and Windows Vista (32 bit version).

With its Plug’n’Play operation PUC² is ready to go without installation of any drivers.
PUC² is powered through the computer’s USB port.

Several versions of PUC² are available, offering different audio input and output
formats and connections. The AES-3 interface is common to all versions.

Yellowtec has a policy of continually improving and updating its products, and may
from time to time make firmware upgrades or dedicated software for PUC² available
on our website. Please visit Yellowtec’s website www.yellowtec.com
time to benefit from new features and performance enhancements. Firmware
upgrades will be free of charge.

PUC² is capable of recording high-resolution audio at up to 192 kHz sample rat e and
24 bit word-lengths using its ASIO driver.

from time to

2 Ready, Set Up, Go

Your PUC² is designed so that you can start using it right away. If you have never
used a PUC before, read this guide for help getting started.

If you are an experienced user, you may already know enough to get started. Make
sure you make yourself familiar with Chapter 4 “Advanced Operation”.

What’s in the Box

Your PUC² comes with a USB Y-cord to interconnect with your MAC or PC.

Setting Up your PUC²

Step 1: Simply interconnect PUC² with your computer using the supplied USB Y-cord.
Make sure you plug in both USB A-plugs (yellow and black) into two unused ports.
The yellow connector carries no data but will be needed to secure sufficient power
supply.

Step 2: The first time you interconnect your PUC² to a PC or a MAC a series of
messages will appear on the computer monitor and report the automatic installation
of a new US B device. The device will identify as YELLOWTEC PUC².

Step 3: You can now us PUC² in native mode.
Step 4: For using PUC² with high-res audio (192KHz sample rate) and enhanced

features you may need to install our ASIO driver. Please visit our website for options.

3 PUC² Basics

RDY LED

GREEN indicates proper connection and working. A brief RED flash indicates the
activation process when you connect PUC² to the computer.

AES-3 Input

The AES-3 input is the default audio input to the PUC². This input will override any
other inputs (for example from the analogue inputs) when a digital input carrier is
detected and locked, even if there is no active audio in the digital stream. The
audio signal is converted into a USB format and available to any audio recording
application on the computer.

AES-3 Input

The AES-3 output is always active at the sample rate selected by the application
running on the computer.

ZLM LED

RED indicates “Zero Latency Monitoring”. (See “Advanced Operations”)

ZLM Jack

In order to route the input signal directly to the output you can apply an external
contact closure. This bypasses the OS kernel for true Zero Latency Monitoring. (See
“Advanced Operations”)



AUX Output *

The Stereo 3.5mm jack supplies an analogue audio signal for monitoring. It can be
used to drive a set of headphones, although there is no control of the AUX output
level. Care should be taken to avoid hearing damage due to prolonged listening at
high levels.