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4 - 2
4-2 ADJUSTMENTS ON THE PLL UNIT
ADJUSTMENT ITEM
TRANSCEIVER'S
CONDITION
OPERATION
MEASURE
POINT
ADJUST
POINT
VALUE
REFERENCE
FREQUENCY
SIGNAL
1 • Frequency: 14.10000 MHz
• Mode: USB
• Transmitting
• Connect a frequency counter to
J571.
J571
(Verify)
64.000000 MHz
(±300 Hz)
2 • Frequency: 14.10000 MHz
• Mode: USB
• Receiving
• Connect an RF voltmeter to J571.
J571
L551, L552
(Repeatedly)
Max. voltage
3
–
–10 dBm (±3 dB)
(Verify)
LOCK VOLTAGE
• Frequency: 14.10000 MHz
• Receiving
• Connect a voltmeter to CP221.
CP221
(Verify)
1.0–4.0 V
1ST LO LEVEL
1 • Frequency: 0.1 MHz*
1.8 MHz**
• Receiving
• Connect an RF voltmeter to J501.
J501
(Verify)
+4 dBm (±3 dB)
2 • Frequency: 4.0 MHz*
3.5625 MHz**
• Receiving
3 • Frequency: 7.9 MHz*
7.1 MHz**
• Receiving
4 • Frequency: 8.0 MHz*
10.1 MHz**
• Receiving
5 • Frequency: 15.0 MHz*
14.35 MHz**
• Receiving
6 • Frequency: 21.9 MHz*
21.45 MHz**
• Receiving
7 • Frequency: 22.0 MHz*
24.89 MHz**
• Receiving
8 • Frequency: 50.0 MHz
• Receiving
9
†
• Frequency: 54.0 MHz
• Receiving
RX 2ND LO LEVEL
• Receiving
• Connect an RF voltmeter to the J852.
J852
(Verify)
–10 dBm
(±3 dB)
TX 3RD LO LEVEL
• Transmitting
• Connect an RF voltmeter to the J851.
J851
(Verify)
CODEC CLOCK LEVEL
• Receiving
• Connect an RF voltmeter to the J601.
J671
(Verify)
–12 dBm (±3 dB)
*: For all models except [TPE] and [KOR]. **: For [TPE] and [KOR].
†
: Except [TPE].