V10/V7.5/V5/V3.5 Installation and Operation Manual
Page
2-25
Section 2 Preparation for Use and Installation
Issue 3.5
(e) Obtain the
Proof of Performance
test
results, the completed copy of the
Critical Parameters and Scale Factors
sheets that are taped in front of the
transmitter, near IPA A, during
packing for shipment. Insert these
documents into Section 5, System
Level Troubleshooting, of this manual.
NOTE
Nautel completes the Critical Parameters
sheet with the transmitter terminated into a
precision 50
Ω
load. Measurements made
on site into a dummy load or station
antenna may not yield the same readings.
Slight variances are acceptable. The data
is provided as a troubleshooting aid.
2.4.3 Initial Turn-On
(a) Verify the requirements of 2.4.2 are
complete.
(b) Switch on ac power.
(c) Verify or install battery BT1 on the
control/display PWB (A43).
(d) Set the
Real-Time Clock
on the front
panel GUI for local time (see 3.6.9). If
the transmitter contains M50 exciters,
set their clocks (see M50 manual) to
match the transmitter clock.
(e) Confirm that the
AC OK
lamp on each
switching power supply module (U1
through U10, as applicable) is on.
NOTE
Unless otherwise stated, all of the following
references to controls and indicators are
located on, or accessible from, the control/
display panel’s diagnostic display. If
necessary, remove covers from any PWB
to improve accessibility to a test point or
adjustment. Re-install covers when the
commissioning procedure is complete.
(f) Select local control by pressing the
Control – Local
button.
(g) Preset 1 is factory set to the
customer’s configuration and power
level. If desired, select a different
active preset in the Power Control
menu (see 3.6.4).
NOTE
For transmitters using M50 exciters, if the
transmitter preset is changed to a preset
with a different mode of operation (analog,
hybrid or all-digital) or frequency, ensure
the M50 exciter’s preset also changes to
match the mode and frequency of the
transmitter. Transmitter presets with similar
modes and frequencies do not require an
exciter preset change.
(h) Set the
ON/STANDBY
switch of each
switching power supply module (U1
through U10, as applicable) to
ON
(toggle up).
(i) Press
the
Control - RF On
button.
(j) Verify the cooling fans for the RF
power modules and switching power
supply modules are operating. You
should feel a low velocity stream of air
at the front of each RF power module
and at the front of the switching power
supply modules. For V10/V7.5
transmitters, the non-operational IPA
module’s cooling fan is never active.
(k) The
DC FAIL
lamp on the standby IPA
switching power supply module should
be on (red), indicating the module is in
standby mode. Its cooling fan should
not be on.
(l) The transmitter should be at the preset
power level defined by the selected
preset and there should be no alarms
on the front panel System Diagram.