Skanti TRP 9250, Техническое руководство, Страница: 284 / 289

The handset hook signal is utilized as follows:
When the receiver of the radiotelephone is used for scanning controlled from the DSC 9000 or
radiotelex equipment, scanning is interrupted while the handset is off-hook. At the same time
automatic DSC acknowledgement transmissions are disabled. Scanning is automatically resumed
when the handset is placed on-hook.
When a Selective or Direct-dial telephony call is received, lifting the handset off-hook will stop the
acoustic alarm, start transmission of an acknowledgement, and set the radiotelephone to the
appropriate working frequencies.
Configuration of DSC-watch
The DSC 9000 enables two DSC watch receivers to be used simultaneously. The
status
display
contains a line for each receiver/demodulator, indicating the DSC watch frequencies.
It is possible by configuration to select between different DSC watch lay-outs in the
status
display:
Distress watch MF
Distress watch MF/HF
Calling watch
None
One of the lay-outs may be selected for each watch receiver.
To change the configuration, select WATCH in the CONFIGURATION menu and press [Enter].
Select the desired configuration for each watch receiver and press [Enter].
Note: When the TRP 7000 or TRP 8000 is intended to be used for automated radiotelex and no
additional DU configured as a DSC watch receiver is connected (see page 3-7 ’Connection of an
additional DU’), ’None’ should be selected for ’watch receiver 2’.
Configuration of Telex Interface
Select INTERFACES in the CONFIGURATION menu and press [Enter]. Select TELEX in the
Interfaces menu and press [Enter]. Select ’External modem’ if an external radiotelex modem is used
and press [Enter].
Configuration of Printer Interface
Select INTERFACES in the CONFIGURATION menu and press [Enter]. Select PRINTER in the
Interfaces menu and press [Enter]. Select between connection to
This DCU, None/other DCU, or DU*
DSC INSTALLATION INSTALLATION CONFIGURATION
7-20 TRP 9250 TECHNICAL MANUAL