5 - 3
5-2 PLL ADJUSTMENT
“REFERENCE FREQUENCY” adjustment must be performed at “ADJUSTMENT MODE”.
1ST VCO
LOCK
VOLTAGE
2ND VCO
LOCK
VOLTAGE
REFERENCE
FREQUENCY
DETECTOR
OUTPUT
VOLTAGE
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT CONDITION
MEASUREMENT
VALUE
POINT
UNIT
LOCATION
UNIT
ADJUST
1
2
3
4
5
1
2
1
1
• Displayed frequency :
493.300 MHz
• Receiving
• Displayed frequency :
493.300 MHz
• Receiving
• Displayed frequency :
282.900 MHz
• Receiving
• Displayed frequency :
0.150 MHz
• Receiving
• Displayed frequency :
493.295 MHz
• Receiving
• Displayed frequency :
430.000 MHz
• Receiving
• Displayed frequency :
493.300 MHz
• Receiving
• Displayed frequency :
(Fr ch)
439.800 MHz
• Receiving
• Displayed frequency :
145.600 MHz
• Connect an SSG to the antenna
connector and set as:
Level
: 1 mV
*
(–47 dBm)
Modulation : OFF
• Receiving
RF
RF
RF
RF
Connect the digital
multi-meter to the
check point LV1.
Connect the digital
multi-meter to the
check point V.
Connect the fre-
quency counter to
the check point F.
Connect the digital
multi-meter to check
point QUAD.
1.8 V – 2.8 V
1.8 V – 2.8 V
less than 12 V
1.4 V – 2.4 V
less than 12 V
0.4 V – 1.0 V
less than 2.6 V
706.4999 MHz –
706.5001 MHz
1.0 V
RF
LOGIC
RF
L63
Verify
Verify
Verify
Verify
Verify
[DIAL]
L21
*This output level of the standard signal generator (SSG) is indicated as SSG’s open circuit.
