R.V.R. Elettronica PTX30 UHT/S3, Руководство пользователя

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PTX30 UHT /S3
10 / 36 User Manual Rev. 5.0 - 10/12/2001
figure 5.1
Connect a dummy load with a continuous power dissipation of 30 W or more to
the R.F. OUT connector on the rear panel. It’s preferable to connect also a through
wattmeter, to check the reading of the internal wattmeter (see figure 5.1).
Connect to the rear input "REMOTE" a cable with a switch between shield and
inner conductor and close the switch. Place the power switch in OFF position.
Insert the mains cable in the VDE socket.
NOTE: It’s necessary that the power supply has an earth connection, for the safety
of the operator and for the correct performance of the exciter.
5.2 Operation
Switch the power “ON” and check that the green “ON” indicator lights, check also
the red “UNLOCK” indicator and the green indicator relative to the internal
parameters “PWR FWD”.
After some seconds, the central display will light and will indicate a figure (98.00)
corresponding to the last used frequency. In about 30 seconds the red “UNLOCK”
led will go out indicating that the oscillator is correctly locked.
The display is composed of 5 digit; at the right of the decimal point there are two
digits, the first indicates the hundreds of KHz and the latter the tens of KHz. At the
left of the decimal point we have 2 or 3 digits that show the tens of MHz, the MHz
and the hundreds of MHz (when necessary).
E.G. 98.45 Ninety-eight MHz and four hundred fifty KHz.
E.G. 103.94 One hundred and three MHz, nine hundred fourth KHz.
To change these values push the “UP” or “DOWN” switches until you reach the
new frequency, than confirm the new value (e.g. 103.45) pushing the ENTER
switch.
The “UNLOCK” led will light confirming that the VCO is reaching the new frequency;
if the “ENTER” switch isn’t pushed, the display will blink four times and will come
back to the old frequency.
NOTE: During this procedure and before you push “ENTER” the exciter
continues to work on the old frequency.