Wulfsberg Electronics Division CVC-151 用户手册
FLITELINE AVIONICS SYSTEM
PILOT’S GUIDE
Publication No. 150-047012
Page 29
Rev. D
Dec 2005
CVN-252 Notes
1. The FREQUENCY SELECTOR KNOBS tune the navigational radio receiver directly. The Series III and
FliteLine radios digitally transmit the actual frequency to which the receiver is tuned. The transceiver may
also be tuned by an external ARINC 429 digital data bus.
also be tuned by an external ARINC 429 digital data bus.
2. The VOLUME control on the CVN-252 Control Display does not adjust the volume of the Marker Beacon
receiver in the navigation receiver. This volume is preset. Typically, Marker Beacon volume is adjusted by
a control on an audio control panel.
a control on an audio control panel.
3. Display intensity and panel lighting are controlled by external dimmer controls.
4. Pressing and holding the FREQUENCY TRANSFER button for at least 7 seconds before releasing it sets
the active frequency to 108.00 MHZ and puts the unit into active tuning mode. Because the display is
controlled by the receiver (see Note 1 above), the receiver will tune to this frequency even if the display is
defective. From the known reference of 108.00 MHz as a starting point, any other frequency may be
selected by counting detents. Each clockwise detent of the outer knob is one MHz difference (108, 109,
110, etc.). Each clockwise detent of the inner knob is .05 MHz difference (.00, .05, .10, .15, etc.). For
example, rotating the outer knob clockwise three detents would put the frequency at 111.00 MHz. Then
rotating the inner knob clockwise three detents would then put the frequency at 111.15 MHz.
controlled by the receiver (see Note 1 above), the receiver will tune to this frequency even if the display is
defective. From the known reference of 108.00 MHz as a starting point, any other frequency may be
selected by counting detents. Each clockwise detent of the outer knob is one MHz difference (108, 109,
110, etc.). Each clockwise detent of the inner knob is .05 MHz difference (.00, .05, .10, .15, etc.). For
example, rotating the outer knob clockwise three detents would put the frequency at 111.00 MHz. Then
rotating the inner knob clockwise three detents would then put the frequency at 111.15 MHz.
5. The FREQUENCY SELECTOR knobs rotate continuously through all detents without end stops. For
example, the next clockwise detent of the outer knob after 117 is 108; the next clockwise detent of the inner
knob after .95 is 00.
knob after .95 is 00.
6. Pressing and holding the left pushbutton (PWR) for more than 1 second will trigger the system to shutdown.
A warning screen will display a countdown. Releasing the PWR button before the count has expired will
return the unit to the display screen active prior to initiating the shutdown.
return the unit to the display screen active prior to initiating the shutdown.
Should the system become unresponsive, a hardware failsafe shutdown can be initiated. Under this
circumstance, press and hold the PWR button for 12-15 seconds. There is no indication other than actual
system shutdown and an audible click.
circumstance, press and hold the PWR button for 12-15 seconds. There is no indication other than actual
system shutdown and an audible click.