Navtech Systems
Limited
Sulby, Nr. Welford, Northamptonshire. NN6 6EZ. UK.
Telephone: +44 (0)1858 880 857 Fax: +44 (0)1858 880 859
E-mail:
Web:
www.navtechsystems.co.uk
Video & Audio Output
Composite video output is available via the two BNC’s on the LH side panel.
If configured for audio, two RCA-Phono connectors provided the audio outputs.
Antennas
For diversity operation two N type antenna connectors allow for high gain N type
antennas to be attched or the smaller, lower gain styles using N type to SMA
adapters
The antennas can be detached for storage or transportation in the carry case.
External Power
External DC is input via the side-mounted connector. The receiver can be
operated from an external 12V DC (10-16V DC) supply drawing approximately
1.2A.
Warning:
If higher voltages are applied, the unit will be damaged. Power
is applied via a 4 pin XLR or optional 2-pin Lemo connector. The centre mounted
rocker switch must be set to the
‘I’
position to select external power input and the
‘II’
position for battery power.
Battery operation
An external V-lock battery may also be used to power the
Director
that will give approx five hours
continuous use when fully charged.
Battery charging
The V-Lock battery charger (optional accessory) is used to charge the battery with a charge time of
approximately 3 hours.
Receiver operation
The
Director
is powered up by ensuring that the V-lock battery is fitted or an external supply is
connected. The front panel on/off switch powers the system. If the monitor does not come on
automatically this is turned on by the monitor PWR button.
The
Rover Director
receiver uses the latest form of diversity reception technology to optimise
performance. Two antennas are used; the receiver will however function with only one antenna fitted
but best results are obtained in diversity mode. Simply connect to the antenna connectors. Channel
selection is via the rotary switch – as per the transmitter module. The transmitter and receiver must
be on the same channel and be compatible with the frequency allocation of the system in use.
The demodulated video is supplied to the monitor. Two additional composite PAL (or NTSC,
depending on model) signals are available via the 75ohm BNC outlets.
Operational status is shown as outlined above
When first powered on, the receiver will output colour bars until a signal is detected and
demodulated. If the signal is subsequently lost then the lock LED will go out and the screen will go
blank. When coherent RF signals are detected again, the lock LED will illuminate and pictures will
then resume.
Warning:
If operating the transmitter very close to the receiver, some signal break-up may be
observed. This is simply due to the receiver input stages being ‘overloaded’ with too much signal. If
operating at very close ranges use low gain whip antennas (and / or remove one of the antennas
completely).
