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User Manual
Rev. 1.2 - 24/01/11
PTX-DDS
5.2 First power-on and setup
Follow this procedure upon first power-on and after making changes to the
configuration of the transmitter in which the amplifier is integrated.
Note :
Standard factory settings are RF power output Off (
Pwr OFF
) and output
power set to upper limit (unless otherwise specified by customer).
5.2.1 Power-on
Question:
The equipment is turn off?
Answer:
• When you have performed all of the connections described in the previous paragraph,
power on the amplifier using the suitable power switch on the rear panel (figure 6.2 - item
[1]). Power on the pilot exciter switch on the front panel (figure 6.1 - item [7]).
Ensure that the
ON
light turns on (see figure 6.1 - item [2]). Start up informations
should appear briefly on the display, quickly followed by the main readings (figure
7.5 - chap.7.4.1). If RF output is disabled, these readings will be zero.
5.2.2 Frequency lock check
Question:
The equipment doesn’t work correctly?
Answer:
• Ensure that the
LOCK
light turns on (see figure 6.1 - item [1]). It indicates the
PLL is locked to working frequency, wait at least 15 seconds from the power on
of
PTX-DDS
.
5.2.3 Power check
Question:
The equipment doesn’t work correctly at the power set up?
Answer:
• Ensure that the
INTERLOCK
light turns off (see figure 6.1 - item [2]). It indicates
that no external interlock signal inhibites the delivering power from exciter.
• Ensure that the
F.BACK
light turns off (see figure 6.1 - item [10]). In counter case
indicates the foldback function is operating (automatic reduction of the delivered
RF power). To restore the right operation, connect a proper load, or antenna, to
the exciter.
