Required Test Equipment; Alignment Procedures - Ranger RCI-2985DX Manual

Audio Signal Generator

6.1 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 6-1
Transmitter Test Setup and Figure 6-2 Receiver Test Setup. These test setups are used in part or total
during the following adjustments and refer to Page 59 for adjustment location.
6.1.1 PLL ALIGNMENT
ITEM U.U.T. SETTING
PLL 2 Set radio to 24.890 MHz, AM RX mode.
VCO Voltage Frequency setting at 29.699 MHz.
Connect Multimeter to TP10.
PLL 1 Set radio to 24.890 MHz, AM RX mode.
VCO Voltage Frequency setting at 29.699 MHz.
Connect Multimeter to TP11.
AM Frequency Set radio to AM RX mode.
Set Clarifier Control to 12 o'clock.
Connect Frequency Counter to TP16.
TX Frequency Set radio to AM TX mode.
Connect Frequency Counter to TP16.
VCO Output Set radio to 28.000 MHz, AM RX mode.
Connect Oscilloscope to TP3.
AM OSC Set radio to AM TX mode. Mod off
Connect Frequency Counter to TP5.
USB OSC Set radio to USB TX mode. Mod off.
Connect Frequency Counter to TP5.
LSB OSC Set radio to LSB TX mode. Mod off.
Connect Frequency Counter to TP5.
6.1.2 TRANSMITTER ALIGNMENT
ITEM U.U.T. SETTING
TX Power Set radio to 28.000 MHz, AM TX mode.
Modulation off.
Set radio to 28.000 MHz, USB TX mode.
AF signal 30mV, 1 KHz to microphone.
Connect Oscilloscope to TP17.
Set RF PWR Fully Clockwise.
Set Clarifier Control to 12 o'clock.
RCI-2995DX LEVELS ARE SHOWN IN [ ].
- 20 -
Sinad Meter
ADJUST
POINT
L14
L13
VC2
VR8
L17
L18
L20
L19
ADJUST
POINT
L18,L37,
L35,L34
MEASUREMENT
1.0 VDC ± 0.1
≤ 4.5 VDC
1.0 VDC ± 0.1
≤ 6.5 VDC
10.100 MHz ± 10 Hz
10.100 MHz ± 10 Hz
Maximum Output
38.6950 MHz.
10.6950 MHz ± 10
Hz
10.6975 MHz ± 10
Hz
10.6925 MHz ± 10
Hz
MEASUREMENT
Maximum Output.