Standard Horizon HX290, Service Manual

Page: 11 / 42

11
HX290 Service Manual
Alignment
Software Alignment
Set up the Software Alignment Mode
Install the HX290 Service Flag Controller Program to
your computer.
Connect the CT-111 (or CT-29 + CT-97) Clone Cable
between the MIC/SP jack of the HX290 and the Serial
Port of your computer.
Execute the HX290 Service Flag Controller Program.
Select the COM port number which is connected to
the Clone Cabl (HX290).
Press and hold in the key while
turning the transceiver on.
Select “Alignment ON” Radio But-
ton of the HX290 Service Flag Con-
troller Program.
Click the left mouse button on the
[
SET
] button of the HX290 Service
Flag Controller Program. Then turn
the transceiver off.
Squelch Adjustment
Set up the test equipment as shown at the right, and
set the DC Power Supply voltage to 7.4 V.
Turn the transceiver on.
Set the channel to CH16, then turn the transceiver off.
Press and hold in the key while
turning the transceiver on to enter
the Alignment Mode. The display
will be shown the “
AL
”.
Press the key repeatedly until
the Alignment Item “
ti
” is shown on
the display.
Set the RF Signal Generator output
to 156.800 MHz, at a level of 0 dBµV, ±3.0 kHz devia-
tion with a 1 kHz audio tone.
Press the key to record a tight level.
A d j u s t V R 1 0 0 5 s o t h a t t h e
transceiver’s display becomes
“
031
”.
Press the key to save the new
setting.
Press the key repeatedly until
the Alignment Item “
tH
” is shown
on the display.
Set the RF Signal Generator output
to 156.800 MHz, at a level of –8 dBµV, ±3.0 kHz devia-
tion with a 1 kHz audio tone.
Press the key to record a threshold level.
Press and hold the key for one second to save the
new setting.
Turn the transceiver off.
Terminates the Software Alignment Mode
Execute the HX290 Service Flag Controller Program
again.
Connect the CT-111 (or CT-29 + CT-97) Clone Cable
between the MIC/SP jack of the HX290 and the Serial
Port of your computer.
Execute the HX290 Service Flag Controller Program.
Select the COM port number which is connected to
the Clone Cabl (HX290).
Press and hold in the key while
turning the transceiver on.
Select “Alignment OFF” Radio But-
ton of HX290 Service Flag Control-
ler Program.
Click the left mouse button on the
[
SET
] button of the HX290 Service
Flag Controller Program.
Turn off the transceiver. Then turn
the transceiver off.
After Alignment
Assemble the transceiver while being carefully so that
Rubber Packing does not protrude from a Front Case.
Important Note: To ensure the radio is water proof,
make sure the gasket is installed on the chassis cor-
rectly and is not pinched when inserted into the front
case.
NOTICE
Do not touch the Alignment Item “ dC ”.
RX S
ECTION
A
LIGNMENT
S
ETUP
VR1005
16 1 W
Resistor
Ω
RF Signal
Generator
Regulated
Power Supply
GND
16 1 W Resistor
Ω