B-Band 144 Mhz Band Adjustment - Yaesu VX-8R/E Service Manual

NOTICE: Do not touch the following Alignment Menus:
"PLL REF"
"S1 LEVEL" with "WFM" icon
"S9 LEVEL" with "WFM" icon.
"HI POWER"
"L3 POWER"
"L2 POWER"
"L1 POWER"
"MAX DEV"
"HI POWER"
"100.0Hz"
"DCS 023"
VX-8R/E and VX-8DR/E Technical Supplement

B-Band 144 MHz Band Adjustment

Press the [BAND] key to select the 144 MHz Amateur
band.
Receiver Sensitivity Adjustment (TUNE DC)
Ì Connect the test equipment as shown in Figure 2: RX
Alignment Setup.
Ì Rotate the DIAL knob to select the Alignment Menu
"TUNE DC".
Ì Set the RF Signal Generator output to 145.100 MHz, at
a level of -10 dBµ, ±3.5 kHz deviation with a 1 kHz
audio tone.
Ì Press the [ V/M ] button (the " " icon will appear on
the display).
Ì Rotate the DIAL knob for maximum deflection on the
SINAD meter.
Ì Press the [ V/M ] button (the " " icon will disappear on
the display).
Squelch Hysteresis Confirmation (HIS SQL)
Ì Rotate the DIAL knob to select the Alignment Menu
"HIS SQL".
Ì Confirm that the alignment value is "0".
Squelch Threshold Adjustment (THLD SQL)
Ì Connect the test equipment as shown in Figure 2: RX
Alignment Setup.
Ì Rotate the DIAL knob to select the Alignment Menu
"THLD SQL".
Ì Set the RF Signal Generator output to 145.100 MHz, at
a level of -11 dBµ, ±3.5 kHz deviation with a 1 kHz
audio tone.
Ì Press the [ V/M ] button (the " " icon will appear on
the display).
Ì Press the [ F/W ] key two times to store the Squelch
Threshold level.
Ì Press the [ V/M ] button (the " " icon will disappear on
the display).
Alignment
21