Ranger Communications RCI-6300F HP, Руководство по обслуживанию

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RCI-6300F HP
RCI-6300F TB CHAPTER 4
ALIGNMENT
4.0 REQUIRED TEST EQUIPMENT
!
DC Power Supply (13.8VDC, 20A)
"
RF Wattmeter (25~60 MHz, 100W)
#
Multimeter (Digital)
$
Automatic Modulation Meter
%
Audio Signal Generator
&
Frequency Counter (100 MHz)
'
RF Signal Generator (100 MHz)
(
Automatic Distortion Meter
)
Oscilloscope (50 MHz)
*
Sinad Meter
4.1 ALIGNMENT PROCEDURES
This transceiver has been aligned at the factory and does not require any adjustments at installation.
The required test equipment listed are used for the test setup or alignment shown in Figure 4-1
Transmitter Test Setup and Figure 4-2 Receiver Test Setup. These test setup are used in part or total
during the following adjustments and refer to Figure 4-3 for adjustment location.
4.1.1 PLL ALIGNMENT
ITEM U.U.T. SETTING ADJUST
POINT
MEASUREMENT
VCO Voltage Disconnect the “short PCB” from TP7, TP8
and TP9.
Set radio to Fr Pool 6, CH 40 AM RX mode.
Set the +10KHz switch to OFF position.
Connect Multimeter to TP2.
Connect Oscilloscope to TP3.
L14
L15
6.5 VDC
±
0.1
Maximum Output
and Balance. (CH 1
& CH 40)
AM Frequency Set radio to Fr Pool 1, CH 1 AM RX mode.
Set radio to Pool 6, CH 40 AM RX mode.
Connect Frequency Counter to TP3.
L20
L17 17.5500 MHz + 20Hz
18.9600 MHz + 20Hz
TX Frequency Set radio to Fr Pool 1, CH 1 AM TX mode.
Connect Frequency Counter to TP3.
VR7 17.5500 MHz + 20Hz
AM OSC Set radio to Fr Pool 1, CH 1 AM TX mode.
Connect Frequency Counter to TP5.
L23 10.6950 MHz + 20Hz
4.1.2 TRANSMITTER ALIGNMENT