Harris Atlas DVL400, Technical Manual

Page: 53 / 180

2/25/03 888-2473-001 2-23
WARNING: Disconnect primary power prior to servicing.
Section 2 Installation / Initial Turn-On
ATLAS Series™
2.13.3 RF Initial Turn ON
Shut the transmitter OFF. The transmitter should be initially powered into the test
load.
Check and Set the ALC (Automatic Level Control). Press POWER AMP, then
PA METERS. The ALC number that controls the power output level of the
transmitter is seen at the upper right corner. Press the transmitter Power up/down
buttons (arrow-shaped buttons) until the ALC number reads 80 (70 for a 2 cabinet
system).
Figure 2-8 PA Meters Screen
Switch ON the AC breakers on the front of the PA power supply modules .
Press the transmitter ON button .
Verify that the reflected power is under 10 watts . The PA Meters screen shows
the forward and reflected power for each PA Module. Press the BACK button.
All PAs should show a green (OK) status on the GUI (Power Amp screen) .
Press POWER SUPPLY and verify that all PA power supplies show OK status
(green)
.
Press OUPUT then OUTPUT METERS. This page shows the forward and
reflected powers for the Cabinet and Total System power (This could be before or
after the filter in a 2 cabinet system - site dependant). The VSWR is also indicated.
NOTE:
For DVL 4300 and DVL 5700 skip the following steps and go directly to
2.13.4 Cabinet Phasing.