Standard Horizon HX370SAS, Руководство по обслуживанию

Страница: 11 / 33

11
Transmitter Power Output
ˆ
Set up the test equipment as shown below for PLL
and Ttransmitter Section Alignment. Maintain the sup-
ply voltage at 8.4V DC for all steps.
ˆ
Press the [
S
] key momentarily to set the display to
“
HP HP HP HP HP
.“ The transceiver now is in the Transmitter High
Power Output Alignment Mode.
ˆ
Press the [
PRESET
] key to enable adjustment of the
Transmitter High Power Output.
ˆ
Press the
PTT
key to cause the transceiver to transmit;
if necessary, press the [
S
] or [
T
] key to adjust the
output power to 5.1 W (±0.1 W).
ˆ
Press the [
PRESET
] key to exit the Transmitter High
Power Output Alignment Mode.
ˆ
Press the [
S
] key momentarily to set the display to
“
CP CP CP CP CP
.“ The transceiver now is in the Transmitter Me-
dium Power Output Alignment Mode.
ˆ
Press the [
PRESET
] key to enable adjustment of the
Medium Power setting.
ˆ
Press the
PTT
key to cause the transceiver to transmit;
if necessary, press the [
S
] or [
T
] key to adjust the
output power to 2.5 W (±0.1 W).
ˆ
Press the [
PRESET
] key to exit the Transmitter Me-
dium Power Output Alignment Mode.
ˆ
Press the [
S
] key momentarily to set the display to
“
LP LP LP LP LP
.“ The transceiver now is in the Transmitter Low
Power Output Alignment Mode.
ˆ
Press the [
PRESET
] key to enable adjustment of the
Low Power setting.
ˆ
Press the
PTT
key to cause the transceiver to transmit;
if necessary, press the [
S
] or [
T
] key to adjust the
output power to 1.0 W (±0.05 W).
ˆ
Press the [
PRESET
] key to exit the Transmitter Low
Power Output Alignment Mode.
Transmitter Modulation
ˆ
Press the [
S
] key to set the display to “
dEu dEu dEu dEu dEu
.“ The trans-
ceiver now is in the Transmitter Modulation Align-
ment Mode.
ˆ
Set the AF generator output to 50 mV rms @ 1 kHz.
ˆ
Press the [
PRESET
] key to enable adjustment of the
Transmitter Modulation.
ˆ
Press the
PTT
key to cause the transceiver to transmit;
if necessary, press the [
S
] or [
T
] key to adjust the
deviation to 4.3 kHz (±0.1 kHz).
ˆ
Press the [
PRESET
] key to exit the Transmitter Modu-
lation Alignment Mode.
CTCSS Modulation
ˆ
Press the [
S
] key to set the display to “
ton ton
ton ton
ton
.“ The trans-
ceiver now is in the CTCSS Modulation Alignment
Mode.
ˆ
Press the [
PRESET
] key to enable adjustment of the
CTCSS Modulation.
ˆ
Press the
PTT
key to cause the transceiver to transmit
(with no microphone input); if necessary, press the [
S
]
or [
T
] key to adjust the deviation to 0.6 kHz (±0.1 kHz).
ˆ
Press the [
PRESET
] key to exit the CTCSS Modula-
tion Alignment Mode.
DCS Modulation
ˆ
Press the [
S
] key to set the display to “
dCs dCs
dCs dCs dCs
.“ The trans-
ceiver now is in the DCS Modulation Alignment
Mode.
ˆ
Press the [
PRESET
] key to enable adjustment of the
DCS Modulation.
ˆ
Press the
PTT
key to cause the transceiver to transmit
(with no microphone input); if necessary, press the [
S
]
or [
T
] key to adjust the deviation to 0.6 kHz (±0.1 kHz).
ˆ
Press the [
PRESET
] key to exit the DCS Modulation
Alignment Mode.
Exit from the Alignment Mode
Press the [
16/9
] key to save the new setting(s) and exit to
normal operation.
Alignment