Intellijel Buff Mult 1U Bedienungsanleitung
Buff Mult 1U Manual
Buff Mult 1U
Dual 1 x 4 Buffered Mult
Manual Revision: 2018.09.13
Buff Mult 1U 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
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Buff Mult 1U Manual
Installation
This module is designed for use within an
Intellijel-standard 1U row, such as
contained within the Intellijel 4U and 7U
Eurorack cases. Intellijel’s 1U specification
is derived from the Eurorack mechanical
specification set by Doepfer that is
designed to support the use of lipped rails
within industry standard rack heights.
Before Your Start
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.
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Buff Mult 1U Manual
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.
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.
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Buff Mult 1U Manual
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.
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Buff Mult 1U Manual
Operation
Buff Mult 1U is a dual 1 x 4 buffered signal multiplier. A signal multiplier takes an input signal
and routes it to multiple outputs simultaneously. For example, you might want to route
keyboard’s pitch CV to three different destinations: one to govern the pitch of your main
oscillator; another to govern the pitch of a second oscillator; and the third to open and close a
filter so that it tracks across the keyboard.
Unlike a passive mult, which merely splits the incoming signal and shares it across multiple
outputs (much like a Y-cable), buffered mults make electrical copies of an input voltage and
duplicate that voltage at the outputs.
Buffered mults have a few advantages over passive mults. Because buffered mults isolate their
outputs from the input, any faults or shorts present at the input will not pass through to a
connected module. Also, in a passive mult, what you connect to an output can cause a slight
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Buff Mult 1U Manual
variation in the voltages that it sends. In some situations (like an LFO or envelope), this probably
won’t have any sonic effect on your patch. But for voltage-critical functions (like an oscillator,
where only a slight change in voltage is easily heard), it’s often better to use a buffered mult,
since this insures that the 1V/Oct signal arriving at its input will be electrically and accurately
duplicated across all its outputs.
Buff Mult 1U is divided into two sections — upper and lower. Each section is its own
1INx4OUT buffered multiplier. Plug an audio or CV signal into the upper section’s left-most
jack [1] and Buff Mult sends a buffered duplicate of that signal out the other four jacks [2] in the
group. Similarly, an audio or CV signal patched into the bottom section’s left-most jack [3] is
duplicated at the other three jacks [4] in the group.
The top input jack [1] is normalled to the bottom input jack [3]. So if nothing is plugged into the
bottom input [3], then the top input [1] is duplicated across all 8 outputs, making Buff Mult act as
a single 1 x 8 buffered signal multiplier.
Technical Specifications
Width
14 hp
Maximum Depth
29 mm
Current Draw
4 mA @ +12V
4 mA @ -12V
Page 6
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