sunair RT-9000C, Руководство по эксплуатации и обслуживанию

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Document No. 8128000560
Software Revision – N1B (07 Oct 04)
7-66
RT-9000 B
7.3.4.3 AUTOMATIC LINK ESTABLISHMENT (ALE) OPERATION
After all required ALE Network and identity information has been entered as described in previous section
7.3.4.2, the system is ready for operation. Operation is not difficult. The operator need only confirm (or select)
the correct operating frequency Channel Group (used for both ALE Receive and Transmit operations) and
confirm (or select) the correct ALE Network (used for ALE Transmit operations).
The RT-9000 B ALE system supports four (4) different ALE calling methods used to communicate with other
Network Stations. Each method has a specific purpose, station calling selectivity, and response requirements.
These ALE calling methods are:
1.)
Point-to-Point Calling
2.) Sounding
3.) NET CALL Calling
4.) ALL CALL Calling
The RT-9000 B Transceiver and internal ALE modem combination both Receives (and initiates an
appropriate Answer, if required) and Originates (Transmits) ALE calls for the above calling methods. Specific
procedures, requirements, and indications are covered in detail later in this section when each type of calling
method is used to Transmit or Receive a call.
7.3.4.3.1 Channel Group Selection
When initially entering ALE mode, the operator must confirm or select the correct operating frequency
Channel Group that ALE system will use to communicate with other Network stations. This is essential for
proper ALE system operation. Channel Group selection is solely an operator responsibility. Perform the
following steps to confirm or change Channel Groups:
1. Depress the ‘*’/’ALE’ key at 1 as shown in Figure 7.3.4.13. The Feature Menu shown in this figure
will appear.
2. Observe the Operational Display shown at
3 and note the first digit following ‘MC’. This is the
currently selected Channel Group.
3. If the currently selected Channel Group IS the desired one, no action is required. The user may
continue operations and skip steps 4, 5 and 6.
4. If the currently selected Channel Group IS NOT the desired one, depress the ‘MORE’ key at 10 . The
Feature Menu Display shown in Figure 7.3.4.14 will appear.