Intellijel UVCA II Manual de usuario
µVCA II Manual
µVCA II
Dual Voltage Controlled Amplifier and Cascaded Mixer
Manual Revision: 2018.09.13
µVCA II Manual
Table of Contents
Table of Contents
Compliance
Installation
Installing Your Module
Overview
Features
Front Panel
Controls
Inputs and Outputs
Technical Specifications
Page 1
µVCA II Manual
Compliance
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that
may cause undesired operation.
Changes or modifications not expressly approved by Intellijel Designs, Inc. could
void the user’s authority to operate the equipment.
Any digital equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio
communications.
This device meets the requirements of the following standards and directives:
EMC: 2014/30/EU
EN55032:2015 ; EN55103-2:2009 (EN55024) ; EN61000-3-2 ; EN61000-3-3
Low Voltage: 2014/35/EU
EN 60065:2002+A1:2006+A11:2008+A2:2010+A12:2011
RoHS2: 2011/65/EU
WEEE: 2012/19/EU
Page 2
µVCA II Manual
Installation
Intellijel Eurorack modules are designed to be used with a Eurorack-compatible case and power
supply. We recommend you use Intellijel cases and power supplies.
Before installing a new module in your case, you must ensure your power supply has a free
power header and sufficient available capacity to power the module:
● Sum up the specified +12V current draw for all modules, including the new one. Do the
same for the -12 V and +5V current draw. The current draw will be specified in the
manufacturer's technical specifications for each module.
● Compare each of the sums to specifications for your case’s power supply.
● Only proceed with installation if none of the values exceeds the power supply’s
specifications. Otherwise you must remove modules to free up capacity or upgrade your
power supply.
You will also need to ensure your case has enough free space (hp) to fit the new module. To
prevent screws or other debris from falling into the case and shorting any electrical contacts, not
leave gaps between adjacent modules, and cover all unused areas with blank panels. Similarly,
do not use open frames or any other enclosure that exposes the backside of any module or the
power distribution board.
You can use a tool like ModularGrid to assist in your planning. Failure to adequately power your
modules may result in damage to your modules or power supply. If you are unsure, please
contact us before proceeding.
Installing Your Module
When installing or removing a module from your case
always turn off the power to the case and disconnect the
power cable. Failure to do so may result in serious injury
or equipment damage.
Ensure the 10-pin connector on the power cable is
connected correctly to the module before proceeding.
The red stripe on the cable must line up with the -12V
pins on the module’s power connector. The pins are
indicated with the label -12V, a white stripe next to the
connector, the words “red stripe”, or some combination of
those indicators.
Page 3
µVCA II Manual
Most modules will come with the cable already connected but it is good to double check the
orientation. Be aware that some modules may have headers that serve other purposes so
ensure the cable is connected to the right one.
The other end of the cable, with a 16-pin
connector, connects to the power bus board of
your Eurorack case. Ensure the red stripe on
the cable lines up with the -12V pins on the
bus board. On Intellijel power supplies the
pins are labelled with the label “-12V” and a
thick white stripe:
If you are using another manufacturer’s power
supply, check their documentation for
instructions.
Once connected, the cabling between the module and power supply should resemble the
picture below:
Before reconnecting power
and turning on your modular
system, double check that
the ribbon cable is fully
seated on both ends and
that all the pins are correctly
aligned. If the pins are
misaligned in any direction
or the ribbon is backwards
you can cause damage to
your module, power supply,
or other modules.
After you have confirmed all
the connections, you can
reconnect the power cable and turn on your modular system. You should immediately check that
all your modules have powered on and are functioning correctly. If you notice any anomalies,
turn your system off right away and check your cabling again for mistakes.
Page 4
µVCA II Manual
Overview
The µVCA II is a two-channel voltage controlled amplifier that features a response curve
continuously adjustable between linear and exponential response.
Features
●Continuously adjustable response curve between linear and exponential
●Gain trimmer with above-unity gain
●Dedicated CV attenuators
●LEDs for monitoring CV signal
Page 5
µVCA II Manual
Front Panel
Controls
1. CV A - Sets the amount of attenuation for
the CV A input. When fully clockwise the
CV input is unattenuated. When fully
counter-clockwise the CV input has no
effect. The brightness of the LED to the
right of the attenuator varies according to
the level of the resulting CV.
2. BIAS A - Sets the initial level of amplifier A
before CV is applied. The maximum bias is
5V which provides a gain of1.
3. EXP-LIN A - Sets the response curve of
amplifier A. Linear when fully
counter-clockwise and exponential when
fully clockwise.
4. CV B - Same as CV A but for channelB.
5. BIAS B - Same as BIAS A but for
channelB.
6. EXP-LIN B - Same as EXP-LIN A but for
channelB.
Note that prior to fall 2015 the BIAS and CV knob
positions were reversed but their functionality was
the same.
Inputs and Outputs
A. CV A - Control voltage input for the level of amplifier A. Summed with the BIAS A
control. Voltages above 5 V will result in a gain greater than 1.
B. IN A - Input signal for amplifier A. This is a direct coupled input so DC or AC signals can
be fed here.
Page 6
µVCA II Manual
C. OUT A - Output signal for amplifier A.
D. CV B - Control voltage input for the level of amplifier B. Summer with the BIAS B control.
Voltages above 5 V will result in a gain greater than 1.
E. IN B - Input signal for amplifier B. This is a direct coupled input so DC or AC signals can
be fed here.
F. OUT B - Output signal for amplifier B. As of the fall 2015 model OUT A is normalled to
be mixed into this output as long as nothing is patched in OUT A. This means you can
use the module as a simple two channel mixer.
Technical Specifications
Width
6 hp
Maximum Depth
35 mm
Current Draw
36 mA @ +12V
35 mA @ -12V
Page 7
Tabla de contenidos
Otros manuales de Mezclador de Intellijel
