Spectra Logic TAC/COM SERIES - Manual (Page 83)

SM06 Rev. 4.10 Tac/Com Control Head Manual
3.4.2.4 EDIT Switch Function - NORMAL Operation
Edit Switch
When the EDIT switch is in the centre-off locked position, all editing functions are off,
and the control is in normal operation. It the switch is set to any other position, then
editing is active, and either radio or channel data can be altered by the operator.
3.4.2.5 Squelch Function - NORMAL Operation
HELP=Instruction
RADIO=Operation
Squelch
Pressing this button during the power-up screen presentation (when the control head is
first turned on) will take the operator through detailed help screens for each function of
the control head. In the normal operation of the control head, this is the only access to
help (on power-up), as this button is then the manual squelch (SQ) test button for the
selected radio.
The squelch test function is useful for monitoring activity on a radio when tones prevent
the squelch from opening normally, or to verify volume settings or radio function.
Pressing SQ over-rides all squelch logic, and lets the radio's raw receive signal pass to
the ship's audio system.
When the locking EDIT switch is in any position other than OFF (centre), the HELP
switch again becomes active, and provides context sensitive help for whatever function
is being attempted, such as frequency entry, tones or labelling.
These two modes of help (power on and edit) provide assistance to the pilot/operator
without interfering with the selected operation of the control head. If, basic help is
required after the Tac/Com control head is already on, cycle the control head off again
(turn all volume controls to OFF, or cycle the external breaker), and when powered up
again, the option for comprehensive help will re-appear.
Jan 4, 2006 Page 3-9
ENG-FORM: 806-0106.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.