sunair RT-9000C, Руководство по эксплуатации и обслуживанию, Страница: 257 / 393

Document No. 8128000560
Software Revision – N1B (07 Oct 04)
7-25
RT-9000 B
Figure 7.3.2.9 RT-9000 B Displays with BFO Enabled
Depress the ‘BFO’ feature key at
3 . An asterisk (*) will appear next to ‘BFO’ in the Feature Menu Display
indicating this function is now enabled. The Channel Number information (Channel designator, ‘CH’ and
Number) shown at
4 in the Operational Display will be replaced with the BFO Offset Frequency and “
±
Polarity
Indicator” (initially: + 0.00 kHz).
The BFO Offset Frequency may now be set at any point within a
±
1.99 kHz range by rotating the ‘TUNING’
control at 5 . The BFO Offset Frequency increases in 10 Hz steps with clockwise rotation of the control and
decreases with counter-clockwise rotation.
The BFO is disabled by depressing the ‘BFO’ feature key at
3 once again.
NOTE: The BFO feature is Receive-only function and can only be selected if
USB, LSB, CW, or Data Emission Modes are selected. Transmitter
frequency and operation is not affected by BFO operation.
NOTE: The BFO feature operates only in the Channel-oriented operating
modes. If ‘Manual’ Tuning mode is currently selected, any attempt to
enable the BFO feature will be rejected and cause the following
message to briefly appear in the Operational Display:
‘DISALLOWED IN MANUAL’
NOTE: If the BFO feature is currently selected and ‘Manual’ Tuning mode is
then selected, ‘Manual mode will be selected but the BFO feature will
automatically be disabled.
*
RT-9000 B