Abstract: Disclosed are techniques for determining an aiming adjustment amount, in terms of both vertical and horizontal aiming adjustments, to shoot a target at a target range by iteratively solving for the projectile trajectory (e.g., projectile drop or path and deflection) such that the iteratively calculated projectile trajectory is determined to pass through the target location within a predetermined threshold amount (e.g., at a projectile path calculation of about zero). Also disclosed are techniques for indicating whether a projectile has supersonic, transonic, or subsonic speed at a given range.

Abstract: Disclosed are techniques for determining an aiming adjustment amount, in terms of both vertical and horizontal aiming adjustments, to shoot a target at a target range by iteratively solving for the projectile trajectory (e.g., projectile drop or path and deflection) such that the iteratively calculated projectile trajectory is determined to pass through the target location within a predetermined threshold amount (e.g., at a projectile path calculation of about zero). Also disclosed are techniques for indicating whether a projectile has supersonic, transonic, or subsonic speed at a given range. Additionally, techniques are disclosed for iteratively determining an aiming adjustment amount that compensates for a moving target.

Abstract: Disclosed are techniques for determining an aiming adjustment amount, in terms of both vertical and horizontal aiming adjustments, to shoot a target at a target range by iteratively solving for the projectile trajectory (e.g., projectile drop or path and deflection) such that the iteratively calculated projectile trajectory is determined to pass through the target location within a predetermined threshold amount (e.g., at a projectile path calculation of about zero). Also disclosed are techniques for indicating whether a projectile has supersonic, transonic, or subsonic speed at a given range.

Abstract: A sight for a handheld weapon includes an electronic component that is powered by a power source. The sight includes an electronic controller and a motion detector. When the sight is moved, the motion detector generates signals and the electronic controller receives the signals. The electronic controller determines whether power should be supplied to the electronic component based on the received signals.

Abstract: A jitter measurement method using a down-mixing or down-converting topology in a jitter measurement system preserves the jitter UI rather than the jitter seconds. An input serial data stream at a high baud is mixed with a stable local oscillator frequency that is close to that of the high baud. The difference between the high baud and the local oscillator frequency is passed by a filter as a lower rate serial stream. A clock recovery circuit recovers a lower rate clock from the lower rate serial stream, or an amplitude modulation removal stage converts the lower rate serial stream to a lower rate NRZ signal, or the lower rate serial signal is digitized. Jitter measurement is performed by a jitter measurement stage on the lower rate clock, the lower rate NRZ signal, or the digitized lower rate serial signal.

Abstract: A jitter measurement method using a down-mixing or down-converting topology in a jitter measurement system preserves the jitter UI rather than the jitter seconds. An input serial data stream at a high baud, after conversion from NRZ to RZ if necessary, is mixed with a stable local oscillator frequency that is close to that of the high baud. The difference between the high baud and the local oscillator frequency is passed by a filter to a clock recovery circuit, to an amplitude modulation removal stage or to a digitizer as a lower rate serial stream. The clock recovery circuit recovers a lower rate clock from the lower rate serial stream upon which the jitter measurement is performed by a jitter measurement stage. The amplitude modulation removal stage converts the lower rate serial stream to a lower rate NRZ signal upon which the jitter measurement is performed directly by the jitter measurement stage or via the clock recover circuit.

Abstract: An electrical signal jitter and wander measurement system (30) operates in real time and digitally controls bandwidths over which the measurements are performed. A digital phase-lock loop ("PLL") (34) includes a phase detector (44), low pass filters (48, 56), an analog-to-digital converter ("ADC") (54), a digital signal processor ("DSP") (32), a direct digital synthesizer ("DDS") (38), and a tracking oscillator (39). The phase detector receives an input signal that is compared with a signal derived from the DDS. The phase detector signal contains wander and jitter data that are filtered and digitized by the ADC. The DSP receives the data and performs a proportional integral control function to lock the PLL by digitally controlling the DDS frequency. The DDS generates a clock signal at a precise rate determined by the phase accumulation registers. The tracking oscillator locks to multiples of the DDS frequency to increase the resolution of the phase measurement.

Abstract: A multi-standard vide option for an oscilloscope detects whether an input video signal has a bi-level or a tri-level horizontal sync pulse from a composite sync signal derived from the input video signal. A ramp signal is generated from the horizontal sync pulse having a slope of one polarity that changes to a slope of the opposite polarity when the horizontal sync pulse is tri-level. For a bi-level horizontal sync pulse the ramp is limited in magnitude and rapidly discharged at the end of the horizontal sync pulse. A digital output signal is generated from the ramp signal and has a width equal to the width of the horizontal sync pulse regardless whether it is bi-level or tri-level. From the type of horizontal sync pulse and the width or the number of lines per frame, a video standard is determined and is subsequently used to determine field identification and to automatically set up the horizontal sweep of the oscilloscope according to a selected video setup.

Abstract: A potentiometer which provides the function of an on/off switch includes a center conductor connected to a conductive ring and a resistive element concentrically disposed about the conductive ring. The resistive element includes a pair of termination pads and one of the pads includes a branch which is situated outside the outer periphery of the resistive element. As a wiper arm traverses the resistive element it remains in contact with the branch for a brief distance and then loses contact with it. This causes the value of the resistance in the potentiometer to make an abrupt shift in magnitude which can be used to initiate various switching functions.

Abstract: An oscilloscope displays a menu consisting of set of field codes and one configuration code set grouped with each field code. Each field code represents an oscilloscope operating parameter while each configuration code represents an alternative oscilloscope operating mode associated with the operating parameter. A configuration cursor is displayed underlining one configuration code in each field thereby indicating the current operating configuration of the oscilloscope. The configuration of the oscilloscope may be changed by first rotating a first control knob, mounted on the oscilloscope front panel, to locate a field selection cursor under a selected field code and then by rotating a second control knob to move the associated configuration cursor under the desired configuration code. The configuration of each field may be altered by selective operation of the two control knobs in this manner.