Realistic
TRC453
Documentation Project
CBTricks.com
PLL
Alignment Procedure
Refer to ALIGNMENT POINTS
Test Equipment required
a.
Oscilloscope (DC - 50 MHz)
b.
Frequency Counter (0 - 30 MHz)
c.
DC Power Supply d. 50 ohm Load
STEP |
SETTINGS |
CONNECTION |
ADJUST
|
ADJUST FOR |
1 |
CH:
40, |
Connect scope to TP2 |
L13
|
Adjust
for 4.5V DC reading on Oscilloscope. |
2 |
Same
as step 1. |
Connect scope to TP2 |
|
Check that the voltage is more than 2V DC on Oscilloscope. |
3 |
Same
as step 1. |
Connect scope to TP3 |
L14
|
Adjust for maximum reading on Oscilloscope. |
4 |
Same as step 3. |
Connect Frequency counter to TP3 |
L16
|
Adjust for 16.4925 MHz ±20 Hz. |
5 |
Same
as step 1. |
Same as step 4. |
L15
|
Adjust for 16.4900 MHz ±20 Hz. |
6. |
Same
as step 1 |
Same as step 5. |
L17
|
Adjust for 16.4875 MHz ±20 Hz. |
7. |
Same
as step 1 |
Same as step 6. |
VR3
|
Adjust fur 16.4875 MHz ±20 Hz. |
8. |
Same
as step 1. |
Connect Frequency counterTP5 |
L20
|
Adjust for 10.6925 MHz ±20 Hz. |
9. |
Same
as step 1 |
Same as step 8 |
L19
|
Adjust for 10.6975 MHz ±20 Hz. |
10. |
Same
as step 1. |
Connect Frequency counter TP9 |
L18
|
Adjust for 10.6950 MHz ±5 Hz. |
Disclaimer: Although the greatest care has been taken while compiling these documents,
we cannot guarantee that the instructions will work on every radio presented.