Motorola MT2000 用户手册

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页码 304
CHANGE/VIEW
MTSX RSS
6-110
68P81074C50
FIELD DEFINITIONS:
MDC System
Use the UP/DOWN arrow keys to change the MDC system or directly enter the system number.  Valid entries are
0 to 630ms in increments of 50ms.
System Pretime
This is the amount of pretime used before the first MDC packet is transmitted.
Preamble During Pretime
This is to enable preamble sequence transmission before voice transmissions.
Inter-Packet Time
The Inter-sequence pretime is the period of time between consecutive MDC messages. Valid entries are in the
range 0 to 6350 ms in steps of 50 ms increments.  Due to the rounding that occurs when preamble during pretime
is enabled, the value shown may change by 50 ms when a codeplug is read from a radio or file.  This is just in the
Radio Service Software, not the radio.
Limited Patience Time
This is the amount of time that transmission of a polite MDC signal will wait before sending out an impolite signal.
The range of values are 1-255 sec. and Infinite.  The factory default is 60 seconds.
DOS (Data Squelch)
This enables the Data Operated Squelch feature. This keeps the radio from unmuting when data is being
received.
Operation
When this field is disabled, only the 1800 Hz criteria for Data Operated Squelch is needed. When enabled, then
both 1200 Hz and 1800 Hz signals are required  for DOS.  The factory default is 1200/1800 Hz.
Coast Time
This is the delay for which the audio will remain muted after the received MDC message is finished. Valid entries
are from 0 to 1134.75 in 4.45 ms increments.
Sel Call Reset
This determines how the Select Call mode is reset after receiving a Select Call and the radio has unmuted.  The
radio will return from carrier squelch mode to select call packet required mode according to this field.
Auto resets the radio after the Sel Call Auto Reset timer has expired.
Auto w/carrier override resets the radio waits until the voice stops.
Both modes can be reset manually by pressing the monitor button.
Auto Reset Time
This is the time the radio will remain in carrier squelch mode after the radio has received a select call directed 
to it.  Once the auto reset time has expired, the radio will reset to the Select Call squelch mode.  The valid range
of values are 1 to 255seconds.  The factory default is 60 seconds.
Emergency Limited Patience Time
When the radio is in Emergency Call Mode, this is the amount of time (in seconds) the radio will wait before
impolitely sending voice if voice transmission is inhibited by the Emergency Priority Inhibit feature.  The valid
range of values are 1 to 255seconds.  The factory default is 5 seconds.