Question: Is SCSI termination important? Should I use Active or Passive termination?
DCA - FAQsAnswer: Yes. SCSI termination is important as without proper termination, a SCSI bus will create distortions in the data pulses when the pulses 'bounce' off the end of the SCSI bus; this can cause data loss. A terminator absorbs the pulses and prevents the distortion of other data pulses. Active termination should be used whenever possible. Passive termination only utilizes resistors to terminate the signal.
Related QuestionsCan passive/active SCSI termination effect the 4020i?
HP SureStore 4020i FAQI would recommend everyone use an active terminator. I could not flash a ROM upgrade, until I changed the termination per advice from an HP tech support rep. If you are using the HP supplied controller from Advansys be advised there are at least 2 revisions of the card. The one I first got was positively identified to produce random read errors when reading from the HP CD. This means that if I used the HP drive to read a CD, I occasionally had corrupted data during reading. Didn't matter if...
Related QuestionsWhat is SCSI "termination power"?
Apple II Csa2 FAQs: 1Main-Start, Part 1/25 - Appleleast one device (SCSI card or any SCSI drive) must provide power for the SCSI terminators by feeding 5 volts onto the TERMPWR line on the SCSI bus. Usually, termination power is fed through a diode to prevent backfeeding from a higher voltage source in case some other device is also supplying termination power. A good implementation will have a fuse to protect against shorts and a capacitor to cope with a sudden rise in termination power drain.
Related QuestionsQ26 - Why use active crossovers when passive crossovers require fewer components and amplifiers?
Frequently Asked QuestionsA26 - Active loudspeakers make very efficient use of amplifier power, allow drivers of vastly different voltage sensitivity to be used together, and give maximum control over the motion of each voice coil. A 2-way speaker with passive crossover, for example, may run into amplifier clipping on a big bass note. In this process the high frequency tweeter signal, which is riding on top of the bass waveform, gets chopped off in the amplifier, causing large amounts of very high frequency distortion.
Related QuestionsWhat is SCSI Termination?
DCA - FAQsProblem: When mastering a CD-R with DCA's RFG module, you receive an error at the beginning of the cut "ATIP error 13". Resolution: Do not use a DCA Clock Board speed setting for the mastering job. Instead, you must use the standard MIS Encoder speeds. Top
Related QuestionsQUESTION: What is Active Termination?
SCSI FAQactive terminator actually has one or more voltage regulators to produce the termination voltage, rather than using resistor voltage dividers. This is a passive terminator: TERMPWR ------/\/\/\/------+------/\/\/\/----- GND | | SCSI signal Notice that the termination voltage varies with the voltage on the TERMPWR line. One voltage divider (two resistors) is used for each SCSI signal. active terminator looks more like this (supply filter caps omitted): 2.85 Volt Regulator +-----------+ +2.
Related QuestionsQUESTION: How can I check a passive SCSI terminator?
SCSI FAQThe terminator contains 18 220-ohm resistors from signals to TERMPWR, and 18 330-ohm resistors from those signals to GROUND.
Related QuestionsShould I use an active crossover or a passive crossover?
Fhrx Studios - Audio / Visual SpecialistsActive crossovers are ones that effect the signal before it is sent to the speaker. Passive crossovers sit near the speaker and filter out certain signals coming towards the speaker. Using either you'll achieve the same aural result but it's a lot easier to adjust an active one.
Related QuestionsShould I get an active or a passive crossover?
Car Audio Components FAQ - WikiFAQ - Answers to Frequently A...Active crossovers are more efficient than passive crossovers. A typical "insertion loss" (power loss due to use) of a passive crossover is around 0.5dB. Active crossovers have much lower insertion losses, if they have any loss at all, since the losses can effectively be negated by adjusting the amplifier gain. Also, with some active crossovers, you can continuously vary not only the crossover point, but also the slope.
Related QuestionsTable of Contents QUESTION: How can I check a passive SCSI terminator?
scsifaqThe terminator contains 18 220-ohm resistors from signals to TERMPWR, and 18 330-ohm resistors from those signals to GROUND.
Related QuestionsTable of Contents QUESTION: What is Active Termination?
scsifaqactive terminator actually has one or more voltage regulators to produce the termination voltage, rather than using resistor voltage dividers. This is a passive terminator: TERMPWR ------/\/\/\/------+------/\/\/\/----- GND | | SCSI signal Notice that the termination voltage varies with the voltage on the TERMPWR line. One voltage divider (two resistors) is used for each SCSI signal. active terminator looks more like this (supply filter caps omitted): 2.85 Volt Regulator +-----------+ +2.
Related QuestionsQUESTION:How can I tell whether an unmarked terminator is active or passive?
SCSI FAQIf you have an Ohm-meter of one kind or another, measure the resistance from the TERMPWR pin to an adjacent GROUND pin. Reverse the probes and take another reading. If the reading is about 30.5 Ohms, with the probes both ways, you have a passive single-ended terminator. If the reading is about 45 Ohms, with the probes both ways, you have a passive differential terminator. Active terminators should read much higher and give very different readings with the probes interchanged.
Related QuestionsMy instrument is passive. Can I add active controls without having to replace the pickups too?
Frequently Asked QuestionsProbably. Even though they put passive electronics in many instruments, for the most part they used low impedance (active) pickups. These can be wired with either active or passive tone controls. We recommend checking with the pickup manufacturer first before doing any work though. They can tell you exactly which pickups you have and what wiring options are available.
Related QuestionsWhen would I use an active (25k) pedal as opposed to a 250k/500k "passive" pedal, and why?
Ernie Ball - F.A.Q.Passive vs. Active: Whenever there is a passive signal leading into an EB pedal, the 250K or 500K pedal is recommended (mono VP & VPJR 250K and stereo 500K VP pedals available). Whenever there is an active signal (powered preamp in the instrument, effects loop, etc.) leading into an EB pedal, the 25K pot is recommended (stereo VP and mono VPJR pedals available).
Related QuestionsWhy is it important to be active?
Paladin Research - Lifesocks and Paladin MedicalBeing physically active will improve your health and well-being. Keeping physically active can help with weight loss and reduces the risk of developing serious medical conditions such as diabetes and heart disease. Walking regularly helps to reduce high blood pressure levels and high cholesterol levels. Walking is easy and cheap and you are highly likely to enjoy the sights, sounds and the fresh air.
Related QuestionsQUESTION: Is the spacing of connectors on a SCSI cable important?
SCSI FAQThe ANSI SCSI spec's say that "stubs" on a SCSI bus must not be any more than .1 meters (4 in.) long. In SCSI-2 there are also guidelines that say you shouldn't place "stubs" any closer than .3 meters (12 in.) apart. Since each device attached acts as a "stub", you really shouldn't place connectors any closer than this. This gets to be more important as your bus performance goes up. i.e. with Fast20 it is very important, but with SCSI-1 it doesn't really matter much.
Related QuestionsTable of Contents QUESTION: How can I tell whether an unmarked terminator is active or passive?
scsifaqIf you have an Ohm-meter of one kind or another, measure the resistance from the TERMPWR pin to an adjacent GROUND pin. Reverse the probes and take another reading. If the reading is about 30.5 Ohms, with the probes both ways, you have a passive single-ended terminator. If the reading is about 45 Ohms, with the probes both ways, you have a passive differential terminator. Active terminators should read much higher and give very different readings with the probes interchanged.
Related QuestionsQ61. What is the difference between an active component and a passive component?
Smalltalk FAQAns. An active component is a VisualWorks component whose widget is a View and has a Model and a Controller. A passive component is a VisualWorks component whose widget is not a View and it does not depend on a model and a controller.
Related QuestionsWhat's the difference between an active and passive speaker?
Nady Systems, Inc Service FAQactive speaker has its own built-in power amplifier and mic/line input jacks and controls. A passive speaker needs an external amplifier to produce audio.
Related QuestionsWhat's the difference between passive and active tags?
Dynamic Bar Code Systems, Inc - Barcoding, RFID and Identifi...Active RFID tags have a battery, which is used to run the microchip's circuitry and to broadcast a signal to a reader (the way a cell phone transmits signals to a base station). Passive tags have no battery. Instead, they draw power from the reader, which sends out electromagnetic waves that induce a current in the tag's antenna. Semi-passive tags use a battery to run the chip's circuitry, but communicate by drawing power from the reader.
Related QuestionsI have an active and a passive bass. Which should be used where?
Tonebone Bassbone - Frequently Asked QuestionsBoth can work in either channel. If you are a purist, you may want to have your passive bass in Channel-1 and set it flat. This would allow your amp to control your EQ for this bass. If you want to beef up your passive, then Channel-2 will give you more control.
Related QuestionsCan you do passive or active trimming?
Resistor TrimmingYes. Active trimming is usually to a circuit voltage output. Passive trimming is to a resistance value. We use a HP DVM, 0.0015% for dc voltage, 0.05% for ac voltage. 6.5 digits. Computer interfaced to the laser.
Related QuestionsIs the scrambler active or passive?
radar jammers laser jammers radar detectors from radar-laser...The scrambler (S201) is strictly a scrambler, while the combination units (phantom 3, C430 viper II and C450) incorporate the scrambling capabilities with a high performance radar detector.
Related QuestionsWhat is the difference between active and passive?
FAQActive, or real-time GPS, means you can request and receive location data from your GPS receiver while your vehicle is on the road. Passive, or non real-time GPS, means your GPS receiver stores all location information for you to access at a later time. Normally, a passive receiver transmits this data at the end of the day, when your vehicle returns to your yard. With a passive system, you get all of the same information as the active system, but in a different time frame.
Related QuestionsWhat is the difference between active and passive participation?
IMSCNS - International Medical Students´ Congress - NO...You can either apply as an active or passive participant. Active means, you want to present your work at the congress. Passive means, you will be able to listen to other's presentations and enjoy social program, without presenting anything.
Related QuestionsIs Active more dynamic than Passive?
FTA Table of Contents PageOur claim to "Passive is Dynamic" is about the same as Mr. Columbus claimed the earth is round. The same question asked when The Little Wonder LW1 was reviewed by UHF. Take a minute to read the audio review. We have proved to all our customers that The Little Wonder is equal, if not superior in every dynamic response to most active pre-amps available.
Related QuestionsWhat is the difference between a passive and an active DI?
Radial JDI passive direct box FAQPassive direct boxes use a transformer to convert the electrical signals while active direct boxes use an amplifier circuit. Passive boxes have the advantage of providing isolation which can reduce ground hum in systems.
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