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].
To Next Page
Loading...
Need help?
General
