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- Number of terms: 20560
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Tektronix provides test and measurement instruments, solutions and services for the computer, semiconductor, military/aerospace, consumer electronics and education industries worldwide.
Communication systems using high-frequency RF to carry the signal information.
Industry:Software
An NHK-suggested broadcast equivalent to ISDN.
Industry:Software
A hardware interrupt request to the CPU which cannot be masked internally in the processor by a bit, but must be serviced immediately.
Industry:Software
a) Group of push-buttons used for inputting information to a system. b) The human interface portion of a computer, typewriter with alpha numeric keys, or push-buttons.
Industry:Software
ISDN is a CCITT term for a relatively new telecommunications service package. ISDN is basically the telephone network turned all-digital end to end, using existing switches and wiring (for the most part) upgraded so that the basic call is a 64 kbps endto- end channel, with bit manipulation as needed. Packet and maybe frame modes are thrown in for good measure, too, in some places. It’s offered by local telephone companies, but most readily in Australia, France, Japan, and Singapore, with the UK and Germany somewhat behind, and USA availability rather spotty. A Basic Rate Interface (BRI) is two 64K bearer (B) channels and a single delta (D) channel. The B channels are used for voice or data, and the D channel is used for signaling and/or X.25 packet networking.
This is the variety most likely to be found in residential service.
Another flavor of ISDN is Primary Rate Interface (PRI). Inside the US, this consists of 24 channels, usually divided into 23 B channels and 1 D channel, and runs over the same physical interface as T1. Outside of the US then PRI has 31 user channels, usually divided into 30 B channels and 1 D channel. It is typically used for connections such as one between a PBX and a CO or IXC.
Industry:Software
A coding scheme that is polarity sensitive.
0 = logic low; 1 = logic high.
Industry:Software
The electronics and panel controls that create keys. There are many types of keyers, some limited to titles only, and some capable of any type of key. All Ampex keyers are full capability.
Industry:Software
