Installation guide

DirectOut Technologies

M.1k2 Hardware & Installation Guide - Version 1.1

CHAPTER 4: Operation

Introduction

This chapter describes the basic operation of the device. Note that

throughout this manual, the abbreviation FS refers to sample rate or

sample frequency. So, when dealing with scaling factors, the follow-

ing sample rates can be written as:

• 44.1 kHz = 1 FS; 88.2 kHz = 2 FS ; 176 kHz = 4 FS

• 48 kHz = 1 FS; 96 kHz = 2 FS; 192 kHz = 4 FS

Global Control

The control on the right of the front panel indicates the power supply.

Power switches are on the back panel:

Power 2 Switches

Enable / disable power supply.

PSU 1 & PSU 2 2 LEDs (green): indicate the status

of both power supply units

LED OFF = Power supply inactive

LED ON = Power supply active

LED blinking 4 times per second = The

power supply was active, and is now

inactive. Whether this is a fault state

depends on the circumstances.

If both PSU LEDs are blinking and the

fan is blowing at full speed, the FPGA is

being programmed. This only happens

during reboot after an update.

The green LEDs (PSU 1 & PSU 2) indicate that a working power

supply is connected to the power supply unit. Note that an unlit LED

does not guarantee that the device is free of voltage. To ensure

that the device is completely disconnected from mains voltage, the

power chords must be disconnected.