M805-00
Glossary Of Terms
A1
Copyright TEL
30/09/96
Appendix A
Glossary Of Terms
Absolute Delay
The time a signal is delayed, measured from when it
leaves its source to when it reaches its destination.
ACL-II+ Card
One of two additional cards (the other is a PCL-830
card) fitted into a standard IBM
1
compatible 386 (or
better) computer to enable it to operate as a System
Controller. The ACL-II+ card provides the RS-485
serial communication between the computer and
ASP cards.
AIM
Audio Inversion Module (T805-01). The AIM is
used when Quasi-Synchronous transmitters are
remotely located and linked to the base site via a
land line. Audio in the 67Hz to 2.55kHz band is
inverted and shifted around a carrier so that it can be
sent down a 300Hz to 3kHz channel. The methods
employed also offer immunity to line polarity
reversals and amplitude variations of the land line.
Amplitude Response
The variation in amplitude of a signal as its fre-
quency is changed.
ARM
Audio Recovery Module (T805-01). A complement
to the AIM.
ASP Card
Audio Signal Processing card. The hardware
description for the cards used in the Quasi-Synchro-
nous system. An ASP card can be a TSGM, LEM,
AIM or ARM depending on the software used.
Breakout Mode
The mode that a LEM/transmitter combination may
be put into if it is required to work outside the
Quasi-Synchronous system. The audio information
transmitted by this combination will be different to
that which is being transmitted by the Quasi-Syn-
chronous system.
Card ID
A number in the range 0-255 which is used to
uniquely identify a card. An LEM may be in the
range 0-222 while a TSGM has the address in the
range 223-238.
Controlling System
The (host) system to which the Quasi-Synchronous
system is connected.
1.
IBM is a registered trade-mark of International Business Machines Ltd.
1
Summary of Contents for T805
Page 16: ...4 2 ASP Card Operation M805 00 30 04 95 Copyright TEL ...
Page 44: ...7 18 Initial Programming Adjustment M805 00 30 09 96 Copyright TEL ...
Page 70: ...14 1 2 PCB Information M805 00 30 04 95 Copyright TEL ...
Page 89: ...Copyright TEL 30 09 96 M805 00 T805 Front Panel PCB Information 14 5 3 ...