sunair RT-9000C, Руководство по эксплуатации и обслуживанию

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Document No. 8128000560
Software Revision – N1B (07 Oct 04)
7-11
RT-9000 B
7 SQUELCH CONTROL
This control is used to set the silencing threshold for the squelch circuit. When this control is set to the full
counter-clockwise position, the squelch circuit is disabled and the equipment is unsquelched (fully
unsilenced).
Rotating the control clock-wise enables the squelch circuit and sets its silencing threshold. When the control
is initially moved, a click will be felt indicting the Squelch switch has been actuated. Clock-wise control
rotation is continued until the RT-9000 B’s Receiver noise just silences (or is “Squelched”).
When set as described above, the squelch circuit is active but maximum Receiver sensitivity has been
maintained. Further clock-wise Squelch control rotation increases the signal strength required to “open” the
squelch and allow an incoming signal to be heard. This action also effectively decreases Receiver sensitivity.
8 FEATURE KEY MENU DISPLAY
This display provides names of functions or selections for the five (5) keys located directly below the display.
In most cases, this display automatically indicates the appropriate selections based upon the condition of
other equipment settings. The menu may be changed by depressing the fifth key under ‘MORE’.
9 FEATURE KEYS
This group of five (5) “Soft” keys enables various functions as indicated in the display located directly above
these keys.
NOTE: An asterisk (*) appearing at the right-hand side of a function in the
display indicates that the feature preceding it is enabled, selected, or
‘ON’.
The RT-9000 B Transceiver controls can be divided into three categories:
A. Primary Operations (Section 7.3.2)
B. Equipment Set-Up (Section 7.3.3)
C. Advanced Operations (Section 7.3.4)