Behringer 921A Oscillator Driver Manuale utente

Quick Start Guide

921A OSCILLATOR DRIVER

Legendary Analog Oscillator Driver

Module for Eurorack

Controls

(1) FREQUENCY – This knob manually sets the frequency for

oscillators connected to the 921A module.

(2) SEMITONE/OCTAVE – Use this rocker switch to

select between semitone or octave increments for the

FREQUENCY knob.

(3) WIDTH OF RECTANGULAR WAVE – Select between

settings ranging from 10% to 90%.

(4) CONTROL INPUT/FREQUENCY – Connect incoming

control voltage signals for the frequency to these dual

summed input jacks via cables with 3.5 mm TS connectors.

These two control inputs are also summed with the

FREQUENCY control knob.

(5) CONTROL INPUTS/WIDTH – Connect incoming control

voltage/modulation signals for the rectangular wave

width to these dual summed jacks via cables with 3.5 mm

TS connectors. These two control inputs are also summed

with the WIDTH knobs.

(6) CONTROL OUTPUTS TO 921B – Connect control signals to

a 921B VCO modules. The left output jack is for frequency

control signals and connects to one of the 921B frequency

link jacks. The right output jack is for rectangular wave

width control signals and connects to one of the 921B

width link jacks. The secondary parallel link jacks on the

921B can then be chained to other 921B VCO modules,

and up to twelve 921B modules can be driven by the

921A driver.

Power Connection

The 921A OSCILLATOR DRIVER module comes with the required

power cable for connecting to a standard Eurorack power supply

system. Follow these steps to connect power to the module.

It is easier to make these connections before the module has been

mounted into a rack case.

1. Turn the power supply or rack case power o and

disconnect the power cable.

2. Insert the 16-pin connector on the power cable into the

socket on the power supply or rack case. The connector has

a tab that will align with the gap in the socket, so it cannot

be inserted incorrectly. If the power supply does not have

a keyed socket, be sure to orient pin 1 (-12 V) with the red

stripe on the cable.

3. Insert the 10-pin connector into the socket on the back of

the module. The connector has a tab that will align with the

socket for correct orientation.

4. After both ends of the power cable have been securely

attached, you may mount the module in a case and turn on

the power supply.

(1)

(2)

(3)

(5)

(6)

(4)

Installation

The necessary screws are included with the module for mounting

in a Eurorack case. Connect the power cable before mounting.

Depending on the rack case, there may be a series of xed holes

spaced 2 HP apart along the length of the case, or a track that

allows individual threaded plates to slide along the length

of the case. The free-moving threaded plates allow precise

positioning of the module, but each plate should be positioned in

the approximate relation to the mounting holes in your module

before attaching the screws.

Hold the module against the Eurorack rails so that each of the

mounting holes are aligned with a threaded rail or threaded

plate. Attach the screws part way to start, which will allow

small adjustments to the positioning while you get them all

aligned. After the nal position has been established, tighten the

screws down.

Specications

Controls

Frequency 1 x rotary knob

±6 octaves / ±12 semitone,

switchable

Semitone / octave Rocker switch,

±1 VDC or ±6 VDC

Width of rectangular wave < 10% to > 90%,

0 VDC to +6 VDC

Signal Connections

Frequency control inputs 2 x 3.5 mm jack, summed,

1 V/oct.

Rectangular width

control inputs

2 x summed 3.5 mm jack,

1 V/16%

Input Impedance 100 kΩ unbalanced

Maximum input level -10 VDC to +10 VDC

Frequency control output 1 x 3.5 mm jack, 1 V/oct.

Rectangular width

control output

1 x 3.5 mm jack, 1 V/16%

Output Impedance 10 Ω unbalanced

Maximum output level -10 VDC to +10 VDC

Drive capability 12 x 921B VCO modules

Power

Power supply Eurorack

Current draw 25 mA (+12 V),

25 mA (-12 V)

Physical

Dimensions 40 x 129 x 35 mm

(1.6 x 5.1 x 1.4")

Rack units 8 HP

Weight 0.09 kg (0.20 lbs)

LEGAL DISCLAIMER

Music Tribe accepts no liability for any loss which may be suered by any person who relies either wholly or in part upon any description, photograph,

or statement contained herein. Technical specications, appearances and other information are subject to change without notice. All trademarks are the property

of their respective owners. Midas, Klark Teknik, Lab Gruppen, Lake,Tannoy,Turbosound, TC Electronic, TC Helicon, Behringer, Bugera, Auratone and Coolaudio are

LIMITED WARRANTY

For the applicable warranty terms and conditions and additional information regarding MusicTribe’s Limited Warranty, please see complete details online at

musictribe.com/warranty.

Zhongshan Eurotec Electronics Limited

No. 10 Wanmei Road, South China Modern Chinese Medicine Park, Nanlang Town, 528451, Zhongshan City, Guangdong Province, China

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