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User Manual
Rev. 1.2- 24/01/11
PTX-DDS
• Check current
RF
output setting and enable output (if not already enabled)
following menu path
Admin
⇒
RfSet
⇒
Pwr
⇒
ON
(chap. 7.4.3.1). Otherwise is
possible enable the output power directly from main menu (chap. 7.4.1).
Output power can also be set in a Pwr OFF condition; in this condition, (Fwd) output
power reading on the display will be 0 (zero), that will be delivered the moment
you switch back to Pwr ON state.
• Check output power level and set to maximum level (if not already set to
maximum) from the Power Setup Menu, which you can call up by pressing these
keys in the order:
Admin
⇒
RfSet
⇒
Pwr
⇒
P.Out
(chap. 7.4.3.1). In alternative
is possible adjust the output power directly from main menu (chap. 7.4.1).
Use
RfSet
menu to set the desired amplifier output power, whereas the forward
power value shown on the display (
Forward: xxx.x W
) gives actual output power
reading,
and may be lower than set power if an Automatic Gain Control is in
limited-power mode
.
IMPORTANT:
The transmitter incorporates Automatic Gain Control and output
power is modulated based on the power level set by the user and actual operating
conditions, such as temperature, reflected power and other parameters. Drive
power must be kept steady at maximum output power capacity. Please read section
5.3 for more details of RF power modulation.
5.2.4 Changing the Power Good alarm threshold
Change Forward Power Good alarm setting
PgFWD
from the
Admin
⇒
PgSet
menu as required (factory setting is 50%).
Please read section 7.4.3.2 for more details.
5.2.5 Changing the internal dip-switch configuration
To change the dip-switch configuration open the upper cover; switch off the equipment (if it
power on) and disconnect the mains power cable, then unscrewing all the screw present.
Remove the cover and identify the panel card (see figure below); configurate the
dip-switch referred to the own necessity.
Figure 5.1
