DRAKE 4000 series II Betriebsanweisung PDF herunterladen (Seite 5)

User Guide 4000 Series II - EASi-COM II

Page iv of x STA0309 - Issue 2.0

Destination port The port used as the target port when assigning a route.

EPROM

Erasable Programmable Read-Only Memory

is a special type of

memory that retains its contents until it is exposed to ultraviolet

light. The ultraviolet light clears its contents, making it possible to

reprogram the memory. To write to and erase an EPROM, you need

a special device called a PROM programmer or PROM burner.

An EPROM differs from a PROM in that a PROM can be written to

only once and cannot be erased. EPROMs are used widely in per-

sonal computers because they enable the manufacturer to change

the contents of the PROM before the computer is actually shipped.

This means that bugs can be removed and new versions installed

shortly before delivery.

GPI A

eneral

urpose

nterface is a series of digital control lines, com-

prising both inputs and outputs which allows the connection of third

party pieces of equipment to a Drake CSU (q.v.). By programming

the operation of these control lines through the CMAPSi (q.v.) pack-

age, a third party piece of equipment can be made to interact with

the CSU.

GPSF A

eneral

urpose

pecial

unction is a set of CSU commands

which can be associated with a GPI (q.v.) input, such that the com-

mands are executed when the logic level of the specified input

changes to the desired state. For example, a GPSF could be used

to generate an audio route between two ports when one of the GPI

input pins became logic 'high'.

Howlround Distorted audio - due to feedback of original signal in close proxim-

ity. An audio resonance which is generated by the audio from an

output being fed back into its input. Feedback is characterised by a

high pitch 'squeal' and can be observed when a microphone is

placed in close proximity to a loudspeaker when there is an audio

route between the microphone and the loudspeaker.

I/O

nput/

utput

I/P

IFB

nterruptable

old

ack provides a caller with the ability to talk over a

normal audio feed (source) to an operator (destination). An IFB

defines matrix connections between source and destination ports

while allowing IFB callers to interrupt a source and talk to a destina-

tion.

Local

Programming

Modifying the DAK assignments via the Intelligent Control Panel

SOFT Mode

1 2 3 4 5 6 7 8 9 10 ... 30 31

Kommentare zu diesen Handbüchern

Keine Kommentare

DRAKE 4000 series II Betriebsanweisung Seite 5

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Türsprechanlagen DRAKE 4000 series II