19
AT U T U N E /
AT U M O D E
switch: Tap to enable the ATU Tune function. Hold to place the internal
ATU in or out of the signal path. The
I N
and
B Y P
LEDs above the switch indicate ATU status.
A N T E N N A /
P F 2
switch: Tap to toggle between the
ANT1
and
ANT2
outputs. The
ANT 1
or
ANT 2
LEDs indicate which antenna output is selected. Hold to select user-Programmable Function 2. Refer
to the KPA1500
Programming Reference
.
M O D E
/
P F 1
switch: Tap to switch between
OPER
and
STBY
modes. LEDs above the switch verify
amplifier mode. Hold to select user-Programmable Function 1. Refer to the KPA1500
Programming
Reference.
R E S E T
/
I N F O
switch: Tap to reset a fault condition. Hold to display information about the last fault
on the LCD. The
FAULT
and
OVR
LEDs are associated with the
R E S E T
key to correct a fault
condition. See “Fault Types, Conditions and Messages,” page 33.
A U X
switch: Hold for 10 seconds to force a firmware load (see page 38).
Power On
IMPORTANT
When the KPA1500 is turned off using the front-panel switch
, part of the control circuitry
remains on as long as AC mains power is applied to the Power Supply.
Keeping the control circuitry energized allows the KPA1500 to be turned on and off remotely as well as
from the front-panel switch. If you do not need to control the KPA1500 remotely and would prefer to save
the small amount of power required for the control circuitry, either switch the Power Supply off using the
rear panel switch or provide an external mains power switch capable of handling 20A.
1.
A dummy load is recommended for initial tests.
Ensure a suitable 50 Ω load is attached to
the
ANT 1
or
ANT 2 c
onnector on the rear panel. Tap the front panel
A N T E N N A
switch to select the
antenna connector used. The associated LED illuminates.
2.
Enable the power supply by placing the rocker switch on the power supply module in the
ON
(
I
)
position.
3.
Tap the
O N
switch
. The LCD
,
ANT 1
or
ANT 2
and the
OPER
or
STBY
LEDs should light. By
default, the KPA1500 enters
STBY
mode at power on. You can change the default to start in
OPER
mode using the
POWER ON MODE
menu item, see page 31.
If the
FAULT
LED
lights and/or the alarm tone sounds at any time, see “Fault Types,
Conditions and Messages,” page 33.
Band switching may be done automatically or manually as follows:
Automatic Band Switching via Frequency Counter:
The KPA1500 measures the incoming RF frequency and
automatically selects the proper band. The
KEY IN
input must be connected and pulled to ground to the driving
transmitter to enable the KPA1500’s counter.
The automatic band selection via frequency counter is active whenever the KEY IN is low
(transmit mode) and the transceiver is delivering RF drive to the KPA1500. The automatic
band selection function overrides band selection made by any other means to protect the
KPA1500 from damage by wrong-band operation.
Manual Band Switching:
Tap any of the front-panel
B A N D
switches to manually switch the KPA1500
to that band. If the incorrect band is selected, the built-in frequency counter will automatically select the
proper band for the RF frequency presented to the Input.
