Oakley MOTM-820, OMS-820 manual Introduction, Lfo

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Introduction

The OMS-820 is a companion module to the MOTM-820 voltage controlled lag processor. It adds powerful new features to the superb Synthesis Technology module. No component changes are needed to the MOTM module, and the two modules are connected together by just one removable connector hidden behind the front panels.

The module is designed to fit into a 1U MOTM style panel. It requires the standard MOTM or Oakley power supply.

With this module you can make the MOTM-820 into a voltage controlled LFO with variable waveshape. Or you use it to make a powerful voltage controlled envelope generator, with manual set and preset modes. You will be amazed by the uses you can find for this module.

1. LFO

When the mode switch is turned to LFO, the output(s) of the MOTM module will oscillate between +5V and -5V. The rise time of the waveform will be set by the UP control and the fall time will set by the DOWN control. The frequency will change according to the settings of both UP and DOWN. You can also change the rise and fall time together with the UP/DOWN control on the MOTM. You can easily make saw, reverse saw, and triangle type waveforms. The LIN/LOG pot on the MOTM will alter the shape of the waveform by introducing the usual non-linearites of the exponential rise and decay.

Top frequency is 1KHz or so, whilst the lowest frequency is so low I got bored waiting for one cycle.

2. EG mode

When the mode switch is turned to EG (envelope generator), you get a voltage controlled AD/AR generator and more besides. This section has four sub-modes. These are selected by two switches: AD/AR and Gated/Resetable.

The envelope generator can be triggered by two means, either a gate input as normal ADSRs, or a push button, GATE, on the front of the OMS-820. When in AD (attack-decay) and Gated mode, the output of the MOTM-820 will then rise until +5V is reached, whereupon it will fall back to zero. Rise and fall times are governed by the MOTM-820 of course, and fully voltage controlled. Removal of the gate signal will cause the decay phase to start prematurely.

Standard A-D EG behaviour.

Switch the unit to AR (attack-release) and gated mode, and the output will rise to +7V or so, and stay there until the gate is released. Standard A-R EG behaviour.

For either of the above modes, pressing the RESET switch will start the decay or release phase regardless of the gate's condition. The RESET input has no effect in this mode.

Switch to AD and Resetable mode. The MOTM output will now rise to a +5V peak when the gate input goes high or the GATE switch is pushed. It will then fall back to zero

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Contents Oakley Modular Series OMS-820 issue Page LFO IntroductionCircuit Description Pots and PowerPage Page Page Components Resistors Parts ListIntegrated Circuits Populating the Oakley OMS-820 PCB Front Panel UP & Down Important Mounting the Spectrol 248 Pots and LEDsConnections Power Pin numberPage Page Testing Final Comments

MOTM-820, OMS-820 specifications

The Oakley OMS-820 and MOTM-820 stand out as exemplary models in Oakley's extensive range of performance eyewear, designed for both sports enthusiasts and everyday users. These models capture the essence of Oakley's commitment to innovation, superior optical technology, and stylish design.

One of the main features of the OMS-820 is its advanced lens technology. Utilizing Oakley’s High Definition Optics (HDO), the lenses provide exceptional clarity and optical fidelity. This technology minimizes distortion, ensuring that users have an unobstructed view, whether they are on the golf course, cycling, or participating in other outdoor activities. The lenses also come with Oakley's PRIZM technology, which enhances color contrast and visibility in various environments, allowing users to detect changes in terrain or obstacles more readily.

The MOTM-820, on the other hand, emphasizes adaptability and comfort. It features a lightweight frame crafted from Oakley’s proprietary O Matter material, which provides flexibility and resilience. This ergonomic design conforms to the shape of the wearer's face, ensuring a secure yet comfortable fit during extended use. The adjustable nose pads and temples further enhance comfort, making it ideal for an active lifestyle.

Both models incorporate Oakley’s innovative lens treatment technology, which includes anti-fog and anti-scratch advancements. This ensures that the eyewear remains clear in challenging conditions, whether users are facing misty weather or rugged terrains. Additionally, the UV protection offered by these lenses shields wearers from harmful rays, a critical feature for outdoor activities.

A striking characteristic of the Oakley OMS-820 and MOTM-820 is their customizable aesthetics. Available in a myriad of colors and styles, users can express their individuality while enjoying high-performance eyewear. This attention to style combined with functionality makes these models popular choices among both athletes and casual wearers alike.

In summary, the Oakley OMS-820 and MOTM-820 are distinguished models that integrate cutting-edge technology with comfort and style. Whether for competitive sports or daily wear, these eyewear options exemplify Oakley’s commitment to enhancing visual performance and user satisfaction.