MSR12 - Eltako
... O-S-W = If the Multi Sensor MS is aligned towards the south, the weighting for light and twilight can be shifted towards the east or west. lf the MS is mounted in a different direction, the desired point of the compass can be set using this rotary switch. A LED behind the rotary switch indicates Rai ...
... O-S-W = If the Multi Sensor MS is aligned towards the south, the weighting for light and twilight can be shifted towards the east or west. lf the MS is mounted in a different direction, the desired point of the compass can be set using this rotary switch. A LED behind the rotary switch indicates Rai ...
G An Examination of Recovery Time of an Integrated Limiter/LNA
... Figure 4 represents the RF levels of the two frequency tones versus time. When the high power F2 signal is on (“high”), the Schottky diodes of the limiter are effectively short circuited to ground. The CW F1 signal is subsequently attenuated and goes low, as shown in Figure 4. Figure 5 shows a typic ...
... Figure 4 represents the RF levels of the two frequency tones versus time. When the high power F2 signal is on (“high”), the Schottky diodes of the limiter are effectively short circuited to ground. The CW F1 signal is subsequently attenuated and goes low, as shown in Figure 4. Figure 5 shows a typic ...
Appendix N - Assistive Listening Systems Performance Standards
... 1. If the ambient electromagnetic noise (generally caused by lighting regulation systems or major power supplies) produces a field strength exceeding 30 mA/meter at frequencies that would decrease the signal-to-noise ratio specified in Item 4, then it is recommended that, unless the noise can be red ...
... 1. If the ambient electromagnetic noise (generally caused by lighting regulation systems or major power supplies) produces a field strength exceeding 30 mA/meter at frequencies that would decrease the signal-to-noise ratio specified in Item 4, then it is recommended that, unless the noise can be red ...
Week-4 - PCT Research Group
... A channel is used to convey an information signal, from one or several senders to one or several receivers Channel capacity the maximum rate at which data can be transmitted over a given communication path, or channel, under given conditions ...
... A channel is used to convey an information signal, from one or several senders to one or several receivers Channel capacity the maximum rate at which data can be transmitted over a given communication path, or channel, under given conditions ...
Optimal pattern-to-signal synchronization for time-frequency
... (SD) signals being a completion (in the sense of addition) of the signal for its more important sections. These SD signals are valid only if significantly greater than the baseline noise level, and thus usually not continuous: one high frequency pattern (HFP) stands for a heart beat. The compression ...
... (SD) signals being a completion (in the sense of addition) of the signal for its more important sections. These SD signals are valid only if significantly greater than the baseline noise level, and thus usually not continuous: one high frequency pattern (HFP) stands for a heart beat. The compression ...
instruments and methods - International Glaciological Society
... conditions and the visibility on the glacier. Sounding profiles of up to 50 km per day have been obtained on Vatnajokull. Navigation on the ice cap was done by LORAN-C and satellite navigation. The maximum thickness measured so far is 800 m on Vatnajokull, but one presumes I 000 m can easily be soun ...
... conditions and the visibility on the glacier. Sounding profiles of up to 50 km per day have been obtained on Vatnajokull. Navigation on the ice cap was done by LORAN-C and satellite navigation. The maximum thickness measured so far is 800 m on Vatnajokull, but one presumes I 000 m can easily be soun ...
nDSP1 - School of Computer Science
... number is termed ' quantisation ' and the resulting sequence of quantised numbers is termed a 'digital signal '. A digital signal is therefore a discrete time signal with each sample digitised for arithmetic processing. Signal Processing: Analogue signals may be "processed" in various ways by circui ...
... number is termed ' quantisation ' and the resulting sequence of quantised numbers is termed a 'digital signal '. A digital signal is therefore a discrete time signal with each sample digitised for arithmetic processing. Signal Processing: Analogue signals may be "processed" in various ways by circui ...
TenTec Orion
... on AGC, background noise clips. Signals clip too! • AGC is fully programmable on the Orion in addition to having conventional settings. Attack, hang, threshold can all be adjusted to operator taste, and threshold can be set to just before noise clips. • No weak ones will be clipped by AGC! • Uniform ...
... on AGC, background noise clips. Signals clip too! • AGC is fully programmable on the Orion in addition to having conventional settings. Attack, hang, threshold can all be adjusted to operator taste, and threshold can be set to just before noise clips. • No weak ones will be clipped by AGC! • Uniform ...
Introductory Physics Laboratory Manual, Experiment Electrical
... 1d. Connect the cable with the clips to CH2, and the clips to the solder lugs on either side of the resistor (points Y and Z), with the ground side (black wire) next to point Z. CH2 will display the voltage across the resistor, VR . 1e. Plug the Cable from the circuit board into the signal generato ...
... 1d. Connect the cable with the clips to CH2, and the clips to the solder lugs on either side of the resistor (points Y and Z), with the ground side (black wire) next to point Z. CH2 will display the voltage across the resistor, VR . 1e. Plug the Cable from the circuit board into the signal generato ...
PIT 96.1 - Communications and signal processing
... compared with the time over which the signal changes appreciably; so that the conductors over which the signal travels remain at equilibrium, i.e. at uniform potential. If this is not the case, we cannot easily use Kirchoff's equations, for example, because the current and voltage at one end of a co ...
... compared with the time over which the signal changes appreciably; so that the conductors over which the signal travels remain at equilibrium, i.e. at uniform potential. If this is not the case, we cannot easily use Kirchoff's equations, for example, because the current and voltage at one end of a co ...
Grafting Synthesis Patches onto Live Musical
... ness and more expressivity (because they can avoid the latency of analysis). These have used the incoming audio signal simultaneously as a processing input and to compute the parameters of the audio effect such as a delay line [2], or an all-pass filter or frequency shifter [3]. In these approaches, ...
... ness and more expressivity (because they can avoid the latency of analysis). These have used the incoming audio signal simultaneously as a processing input and to compute the parameters of the audio effect such as a delay line [2], or an all-pass filter or frequency shifter [3]. In these approaches, ...
Working Paper on Digitizing Audio for the Nation
... are delineated below. The choice of appropriate digitization standards seems to be influenced by two distinct factors - the technological and the archival. Each of these factors poses a different set of questions and challenges to the project. When deciding on particular specifications of sampling r ...
... are delineated below. The choice of appropriate digitization standards seems to be influenced by two distinct factors - the technological and the archival. Each of these factors poses a different set of questions and challenges to the project. When deciding on particular specifications of sampling r ...
Optical Signal Attenuation and Network Performance
... is to measure signal levels throughout the network and place repeaters only when and where they are needed. To determine if a light signal is at an acceptable level at any point on a network, it’s helpful to use an optical power meter. Optical power meters measure signal power at a port, helping you ...
... is to measure signal levels throughout the network and place repeaters only when and where they are needed. To determine if a light signal is at an acceptable level at any point on a network, it’s helpful to use an optical power meter. Optical power meters measure signal power at a port, helping you ...
High-frequency direction finding
High-frequency direction finding, usually known by its abbreviation HF/DF or nickname huff-duff, is the common name for a type of radio direction finder (RDF) introduced in World War II. High frequency (HF) refers to a radio band that can efficiently communicate over long distances; for example, between U-boats and their land-based headquarters. HF/DF was primarily used to catch enemy radios while they transmitted, although it was also used to locate friendly aircraft as a navigation aid. The basic technique remains in use to this day as one of the fundamental disciplines of signals intelligence, although typically incorporated into a larger suite of radio systems and radars instead of being a stand-alone system.Huff-duff used a set of antennas to receive the same signal in slightly different locations or angles, and then used the slight differences in the signal to display the bearing to the transmitter on an oscilloscope display. Earlier systems used a mechanically rotated antenna (or solenoid) and an operator listening for peaks or nulls in the signal, which took considerable time to determine. Huff-duff's speed allowed it to catch fleeting signals, such as those from the U-boat fleet.The system was initially developed by Robert Watson-Watt starting in 1926, although many of the practical elements were not developed until the late 1930s. Huff-duff units were in very high demand, and there was considerable inter-service rivalry involved in their distribution. An early use was by the RAF Fighter Command as part of the Dowding system of interception control, while ground-based units were also widely used to collect information for the Admiralty to locate U-boats. Between 1942 and 1944, smaller units became widely available and were common fixtures on Royal Navy ships. It is estimated huff-duff contributed to 24% of all U-boats sunk during the war.The basic concept is also known by several alternate names, including Cathode-Ray Direction Finding (CRDF), Twin Path DF, and for its inventor, Watson-Watt DF or Adcock/Watson-Watt when the antenna is considered.