Specifications

Alpha Radio Products
Product Release 1
6
DOCNUMBER 9500
Document Issue 1, Revision 7
June 2009 Page 6–1
6
Operating the Amplifier
6.1 Operate the Amplifier 6–1
6.2 (Optional) Set Up to Operate from a PC 6–3
6.3 Put the Amplifier into the Desired State 6–3
6.4 Tune the Amplifier 6–5
6.5 Program the Amplifier Memory 6–9
Before you operate the amplifier, follow procedures in the previous
chapters to install it, set it up, tune it, and save the tune/load/antenna
values.
6.1 Operate the Amplifier
Procedure 6-1 Operate the amplifier
Step 1 Power up the amplifier by pressing one of the amplifier’s two ON buttons:
•
ON/OFF (ANT SEL) button
This provides initial power to the metering, band, and segment-
selection circuits, which turns on the wattmeter and the antenna-
selection functionality (ON1 setting). When you turn on the amplifier
with this and pass RF through the amplifier, the amplifier follows
your RF signal by going to the last antenna for that frequency,
moving the band switch into position for that band, and measuring the
throughput power, SWR of the antenna, and so forth. You can pass
up to 1500 W through the amplifier in bypass or the ON1 setting.
•
ON (AMP) button
This button duplicates the functions described above, and also applies
high voltage to the tube. The amplifier begins its warmup countdown
sequence and the 7-segment display shows the seconds remaining in
the countdown. The STBY switch light blinks.
Step 2 During the countdown and at any other time, display amplifier parameters
as desired by pressing the associated button that controls the 7-segment
display. For information on these buttons, see
2.4, “Controls and
Display,” page 2–3.
During the countdown, be sure to press the Vp button to display the plate
voltage. This should be about 3545 V.