Galaxy DX 949, Руководство по обслуживанию

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4.1.2 TRANSMITTER ALIGNMENT
ITEM U.U.T.
SETTING ADJUST
POINT MEASUREMENT
BIAS Current
Set radio to CH 19 USB TX mode. MOD off.
Connect current meter to TP7(+) and TP9(-)
Connect current meter to TP7(+) and TP8(-)
VR12
VR10
50 mA
100 mA
SSB TX Power
Set radio to CH 19, USB TX mode.
Connect “short PCB” to TP7 and TP9.
Connect RF power meter to antenna jack.
AF signal 30 mV, 1 KHz to microphone.
L40, L42,
L43, L44
L40, L42
MAX
≥
12W
Spurious emission
Min.
Balance Power
Between CH 1 and
CH 40.
SSB ALC Audio signal 30 mV, 1 KHz to microphone.
Set radio to CH 19, USB TX mode.
VR13 11.5 W
SSB Carrier
Balance Set radio to CH 19, USB TX mode. Mic Gain
off. Connect scope to Antenna Connector.
VR6 Spurious Emission
To Minimum.
SSB APC Set radio to CH 19, USB mode.
MOD off. Connect Voltmeter to TP7.
VR17 DC12.5V
AM TX Power Set radio to CH 19 AM TX mode.
No MOD.
VR14 3.8W
RF Power
Meter Set radio to CH 19 AM TX mode. Mod off. VR9 Adjust RF Power
meter to “4” on
PWR scale.
AM
Modulation Set radio to CH 19 TX mode.
Audio signal 30 mV, 1 KHz to microphone.
Set Mic Gain Fully Clockwise.
VR16 90%
4.1.3 RECEIVER ALIGNMENT