Intellijel FSR 1U User manual

FSR 1U
Force Sensing CV and Gate Generating Pad
Manual (English)
Revision: 2021.07.26

TABLE OF CONTENTS
COMPLIANCE 2
INSTALLATION 3
Before Your Start 3
Installing Your Module 4
FRONT PANEL 6
Controllers & LEDs 6
Inputs & Outputs 6
TECHNICAL SPECIFICATIONS 7
FSR 1U Manual

COMPLIANCE
FSR 1U Manual
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

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 You 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, do 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.
FSR 1U Manual

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. Different modules
use different ways to indicate the -12V pins.
Some may be labelled with “-12V;” a white
stripe next to the -12V pins; the words “red
stripe;” or some combination of these.
Additionally, some modules may have
shrouded headers, thus preventing backward connections.
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 power 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.
FSR 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.
FSR 1U Manual

FRONT PANEL
Controllers & LEDs 
[A] FSR - The surface of the force sensing
resistor is both touch and pressure
sensitive.
Touching it sends a +5V signal to the
GATE [2] output for as long as your
finger sits on the pad.
Pressing it sends a voltage to the CV
Out [1] , whose value corresponds with
the amount of pressure you apply. At
maximum pressure, +5V volts is sent to
the CV Out [1] jack.
The pad is very sensitive and offers a
great deal of nuanced, real-time control.
[B] CV LED - This LED begins to glow when the FSR [A] is being touched, and gets brighter as
more pressure (and thus more voltage) is being sent to the CV Out [1] jack.
[C] GATE LED - This LED lights when the FSR [A] is being touched and a +5V gate signal is being
sent out the GATE [2] jack.
Inputs & Outputs 
[1] CV out - This jack outputs a voltage that corresponds to the pressure with which you press on
the FSR [A] . Pressing very lightly sends voltages near 0V. Maximum pressure outputs +5V.
[2] GATE out - This jack outputs +5V gate signal for as long as the FSR [A] is touched, returning to
0V when you lift your finger off the pad.
FSR 1U Manual

TECHNICAL SPECIFICATIONS
FSR 1U Manual
Width
10 hp
Maximum Depth
23 mm
Current Draw
24 mA @ +12V
9 mA @ -12V