FULLY WIRED ELECTRONICS Multi-Logic User manual

Fully Wired Electronics - Multi-Logic
User Manual

Fully Wired Electronics - Multi-Logic
User Manual v1.0
Contents:
Limited Warranty………………….................................................................................2
Installation and Safety……….......................................................................................3
Foreword…..................................................................................................................4
Module Overview…………………………………………………….................................5
Logic Gates in Practice……………………………………………………………………..7
NOT Gates……………………………………………………………………………..7
AND Gates……………………………………………………………………………..8
NAND Gates…………………………………………………………………………...9
OR Gates……………………………………………………………………………..10
NOR Gates……………………………………………………………………………11
XOR Gates……………………………………………………………………………12
XNOR Gates………………………………………………………………………….13
Technical Specifications.............................................................................................14
1

Fully Wired Electronics - Multi-Logic
User Manual v1.0
Limited Warranty:
Fully Wired Electronics warrants this product to be free of defects in materials or
construction for a one year (twelve month) period from the date of purchase1. Proof
of purchase via a receipt or invoice is required when making a warranty claim.
Malfunction resulting from incorrect power supply voltages, reversed or backwards
Eurorack bus board connections, faulty or damaged cables, incorrect patching,
general misuse, the modification of the faceplate and/or the products circuitry or any
other causes of malfunction that Fully Wired Electronics deems to be at the fault of
the user are not covered by this limited warranty. Normal service rates will be
applied.
Attempting to alter and/or modify this product in any way will void this limited
warranty.
During this one year limited warranty period, all defective products will be repaired or
replaced at the discretion of Fully Wired Electronics. Products must be returned
directly to Fully Wired Electronics, with the customer paying the cost of transit to
Fully Wired Electronics.
Fully Wired Electronics accepts and implies that no responsibility will be taken for
harm to person and equipment through the operation of this product.
1For pre-orders this is applicable from the date of shipment rather than the date of purchase
2

Fully Wired Electronics - Multi-Logic
User Manual v1.0
Installation and Safety:
Prior to installing and uninstalling this product, please ensure that your Eurorack
power supply is turned OFF. Installing or uninstalling this product without doing so is
potentially dangerous, running the risk of causing damage to your equipment and
electrocuting yourself. To minimise the possibility of backwards or reversed power
supply connections, the module is fitted with a shrouded 10 (2x5) pin header.
Despite this precaution please ensure that both the power cable header, and the
power supply headers are orientated correctly. Also ensure that there is NO damage
to the power cable being used. A damaged power cable may cause harm to the
module, the power supply being used, or yourself!
3

Fully Wired Electronics - Multi-Logic
User Manual v1.0
Foreword:
Thank you for purchasing the Fully Wired Electronics - Multi-Logic. We value all of
our customers for their support. Your purchase is greatly appreciated!
Special thanks to Phineas Head of Stochastic Instruments for feature suggestions,
and everyone else who was involved during the development and production of this
module, and the journey of Fully Wired Electronics for your help and unwavering
support!
4

Fully Wired Electronics - Multi-Logic
User Manual v1.0
Module Overview:
The Fully Wired Electronics - Multi-Logic is a 2 input, 9 output 10HP Boolean Logic
module, outputting all Boolean Logic types according to the state of both gate inputs.
The module features AND, NAND, OR, NOR, XOR, XNOR and two NOT outputs.
For more information on logic gates and their functions, please see the subsequent
chapter (Logic Gates in Practice). The module also features two illuminated LED
buttons and an additional TRS (Tip, Ring, Sleeve) output, labelled “GATES”, for the
states of both buttons.
Fig 1. Multi-Logic panel overview
5

Fully Wired Electronics - Multi-Logic
User Manual v1.0
The two inputs, both located at the top of the module, both work independently of
each other. When a gate or trigger signal is detected on one of the inputs, the
associated input LED, which is located above (offset to the right) each respective
input, will illuminate. Both inputs are used to alter the states of the outputs. The
buttons, which are located directly below the input sockets, can also be used in
conjunction with the inputs to alter the states of each of the outputs. When one of the
buttons is depressed, its internal LED will illuminate.
The output states for each of the logic types are indicated through the LEDs located
in the top right corner of its associated output indicator box. By default the NOT A,
NOT B, NAND, NOR and XNOR LEDs will all be illuminated once the module
receives power, assuming no gate or trigger signal is active at either of the inputs, or
either button is pressed. Once a gate or trigger signal is detected the states of each
output, and its respective LED, will change according to the appropriate truth table
for the logic gate type.
The “GATES” output is used to utilise both Button A and Button B as manual gate
generators. Through the use of the TRS jack socket, the state of Button A is
outputted on the TIP, whilst the state for Button B is output on the RING.
Each input would expect to receive a +5V gate or trigger signal, however under
normal operation should tolerate signals up to +12V. The Mini-Logic will only output
0V ~ +5V signals across its 9 outputs.
6

Fully Wired Electronics - Multi-Logic
User Manual v1.0
Logic Gates in Practice:
NOT Gates:
NOT gates are the simplest of the 7 logic types, as they have a single input and a
single output. This gate type simply outputs an inverted copy of the signal at its input.
This means if the state of the input is logical low (0), the output state will be logical
high (1). The reverse of this is also true, meaning a logical high (1) at the input, will
result in a logical low at the output. This can be seen in Fig. 2 below.
Fig. 2 - NOT Gate Truth Table
7

Fully Wired Electronics - Multi-Logic
User Manual v1.0
AND Gates:
The output of the AND gate remains in a low (0) state, whilst both of the inputs are in
a logical low (0) state. The same is true if only one of the inputs receives a signal
and enters a logical high (1) state. Both inputs are required to be in a logical high (1)
state for the output to go into a high (1) state, as seen in Fig. 3.
Fig. 3 - AND Gate Truth Table
8

Fully Wired Electronics - Multi-Logic
User Manual v1.0
NAND Gates:
NAND Gates build upon AND gates through incorporating NOT gates, causing the
inverse operation. The output of a NAND gate will remain in a logical high (1) state
until both inputs (in the case of a two input NAND gate) are in a high (1) state, at
which point the output will turn to a logic low (0) state. If only one of the inputs is in a
high (1) state, the output will remain high (1), as seen in Fig. 4, Due to this
functionality, NAND gates are the inverse of AND gates.
Fig. 4 - NAND Gate Truth Table
9

Fully Wired Electronics - Multi-Logic
User Manual v1.0
OR Gates:
The output of an OR gate will be high (1) if either of the inputs are high (1). The
same is true if both inputs are simultaneously in a high (1) state. For the output of an
OR gate to be low (0), both inputs need to simultaneously be low (0), as seen in Fig.
5.
Fig. 5 - OR Gate Truth Table
10

Fully Wired Electronics - Multi-Logic
User Manual v1.0
NOR Gates:
NOR Gates have the inverse operation of OR Gates and incorporate NOT gates to
activate this. The output state of a NOR gate, by default, will be high (1), as seen
within Fig. 6. Whilst either or both of the inputs are in a high (1) state, the output of
the NOR gate will go low (0).
Fig. 6 - NOR Gate Truth Table
11

Fully Wired Electronics - Multi-Logic
User Manual v1.0
XOR Gates:
As seen in Fig. 7, the output of a XOR gate will be low (0) by default, not both inputs
are in a low (0) state. If either inputs, but not both, are in a high (1) state, the output
of the XOR gate will also be in a high (1) state. Should both inputs be in a logic high
(1) state, the output will go low (0).
Fig. 7 - XOR Gate Truth Table
12

Fully Wired Electronics - Multi-Logic
User Manual v1.0
XNOR Gates:
XNOR Gate is an inverted version of a XOR Gate, achieved through incorporating
NOT gates. When both inputs are in a low (0) state, the output will be in a high (1)
state. The same is true when both inputs are in a high (1) state. As seen in Fig. 8,
when either inputs, but not both, are in a high (1) state the output of the XNOR Gate
will be low (0).
Fig. 8 - XNOR Gate Truth Table
13

Fully Wired Electronics - Multi-Logic
User Manual v1.0
Technical Specifications:
● Module Format: 3U
● Module Width: 10HP
● Module Depth: 32mm
● Power:
● +12v current draw: 28mA
● -12v current draw: 0mA
● +5v current draw: 0mA
14